1153 files changed, 3938 insertions, 1743 deletions

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b45246eb4ea..a917d9a7d55 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -34,7 +34,7 @@ jobs:
   pr:
     permissions:
       actions: write
-    name: PR
+    name: "PR - ${{ matrix.name }}"
     env:
       CI_JOB_NAME: "${{ matrix.name }}"
       CARGO_REGISTRIES_CRATES_IO_PROTOCOL: sparse
@@ -159,7 +159,7 @@ jobs:
   auto:
     permissions:
       actions: write
-    name: auto
+    name: "auto - ${{ matrix.name }}"
     env:
       CI_JOB_NAME: "${{ matrix.name }}"
       CARGO_REGISTRIES_CRATES_IO_PROTOCOL: sparse
@@ -578,7 +578,7 @@ jobs:
   try:
     permissions:
       actions: write
-    name: try
+    name: "try - ${{ matrix.name }}"
     env:
       CI_JOB_NAME: "${{ matrix.name }}"
       CARGO_REGISTRIES_CRATES_IO_PROTOCOL: sparse
diff --git a/.mailmap b/.mailmap
index 9148b79e980..92be3174750 100644
--- a/.mailmap
+++ b/.mailmap
@@ -102,6 +102,7 @@ Carol Willing <carolcode@willingconsulting.com>
 Chandler Deng <chandde@microsoft.com>
 Charles Lew <crlf0710@gmail.com> CrLF0710 <crlf0710@gmail.com>
 Chris C Cerami <chrisccerami@users.noreply.github.com> Chris C Cerami <chrisccerami@gmail.com>
+Chris Denton <chris@chrisdenton.dev> Chris Denton <ChrisDenton@users.noreply.github.com>
 Chris Gregory <czipperz@gmail.com>
 Chris Pardy <chrispardy36@gmail.com>
 Chris Pressey <cpressey@gmail.com>
@@ -415,6 +416,7 @@ Nick Platt <platt.nicholas@gmail.com>
 Niclas Schwarzlose <15schnic@gmail.com>
 Nicolas Abram <abramlujan@gmail.com>
 Nicole Mazzuca <npmazzuca@gmail.com>
+Nilstrieb <48135649+Nilstrieb@users.noreply.github.com> nils <48135649+Nilstrieb@users.noreply.github.com>
 Nif Ward <nif.ward@gmail.com>
 Nika Layzell <nika@thelayzells.com> <michael@thelayzells.com>
 NODA Kai <nodakai@gmail.com>
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index d732075fb2d..dfaa70bb9db 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -33,7 +33,6 @@ find a mentor! You can learn more about asking questions and getting help in the
 Did a compiler error message tell you to come here? If you want to create an ICE report,
 refer to [this section][contributing-bug-reports] and [open an issue][issue template].
 
-[Contributing to Rust]: https://rustc-dev-guide.rust-lang.org/contributing.html#contributing-to-rust
 [rustc-dev-guide]: https://rustc-dev-guide.rust-lang.org/
 [std-dev-guide]: https://std-dev-guide.rust-lang.org/
 [contributing-bug-reports]: https://rustc-dev-guide.rust-lang.org/contributing.html#bug-reports
diff --git a/Cargo.lock b/Cargo.lock
index 561f29abec4..c7bd689b2d8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -99,6 +99,46 @@ dependencies = [
 ]
 
 [[package]]
+name = "anstream"
+version = "0.2.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "342258dd14006105c2b75ab1bd7543a03bdf0cfc94383303ac212a04939dff6f"
+dependencies = [
+ "anstyle",
+ "anstyle-parse",
+ "anstyle-wincon",
+ "concolor-override",
+ "concolor-query 0.3.3",
+ "is-terminal",
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23ea9e81bd02e310c216d080f6223c179012256e5151c41db88d12c88a1684d2"
+
+[[package]]
+name = "anstyle-parse"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a7d1bb534e9efed14f3e5f44e7dd1a4f709384023a4165199a4241e18dff0116"
+dependencies = [
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle-wincon"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3127af6145b149f3287bb9a0d10ad9c5692dba8c53ad48285e5bec4063834fa"
+dependencies = [
+ "anstyle",
+ "windows-sys 0.45.0",
+]
+
+[[package]]
 name = "anyhow"
 version = "1.0.65"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -362,7 +402,7 @@ dependencies = [
  "cargo-test-macro",
  "cargo-test-support",
  "cargo-util",
- "clap 4.1.4",
+ "clap 4.2.1",
  "crates-io",
  "curl",
  "curl-sys",
@@ -398,6 +438,7 @@ dependencies = [
  "pasetors",
  "pathdiff",
  "pretty_env_logger",
+ "rand",
  "rustc-workspace-hack",
  "rustfix",
  "same-file",
@@ -669,17 +710,27 @@ dependencies = [
 
 [[package]]
 name = "clap"
-version = "4.1.4"
+version = "4.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "046ae530c528f252094e4a77886ee1374437744b2bff1497aa898bbddbbb29b3"
+dependencies = [
+ "clap_builder",
+ "clap_derive 4.2.0",
+ "once_cell",
+]
+
+[[package]]
+name = "clap_builder"
+version = "4.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f13b9c79b5d1dd500d20ef541215a6423c75829ef43117e1b4d17fd8af0b5d76"
+checksum = "223163f58c9a40c3b0a43e1c4b50a9ce09f007ea2cb1ec258a687945b4b7929f"
 dependencies = [
+ "anstream",
+ "anstyle",
  "bitflags",
- "clap_derive 4.1.0",
- "clap_lex 0.3.0",
- "is-terminal",
+ "clap_lex 0.4.1",
  "once_cell",
  "strsim",
- "termcolor",
  "terminal_size",
 ]
 
@@ -689,7 +740,7 @@ version = "4.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "10861370d2ba66b0f5989f83ebf35db6421713fd92351790e7fdd6c36774c56b"
 dependencies = [
- "clap 4.1.4",
+ "clap 4.2.1",
 ]
 
 [[package]]
@@ -707,15 +758,14 @@ dependencies = [
 
 [[package]]
 name = "clap_derive"
-version = "4.1.0"
+version = "4.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "684a277d672e91966334af371f1a7b5833f9aa00b07c84e92fbce95e00208ce8"
+checksum = "3f9644cd56d6b87dbe899ef8b053e331c0637664e9e21a33dfcdc36093f5c5c4"
 dependencies = [
  "heck",
- "proc-macro-error",
  "proc-macro2",
  "quote",
- "syn 1.0.102",
+ "syn 2.0.8",
 ]
 
 [[package]]
@@ -729,18 +779,15 @@ dependencies = [
 
 [[package]]
 name = "clap_lex"
-version = "0.3.0"
+version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0d4198f73e42b4936b35b5bb248d81d2b595ecb170da0bac7655c54eedfa8da8"
-dependencies = [
- "os_str_bytes",
-]
+checksum = "8a2dd5a6fe8c6e3502f568a6353e5273bbb15193ad9a89e457b9970798efbea1"
 
 [[package]]
 name = "clippy"
 version = "0.1.70"
 dependencies = [
- "clap 4.1.4",
+ "clap 4.2.1",
  "clippy_lints",
  "clippy_utils",
  "compiletest_rs",
@@ -771,7 +818,7 @@ name = "clippy_dev"
 version = "0.0.1"
 dependencies = [
  "aho-corasick",
- "clap 4.1.4",
+ "clap 4.2.1",
  "indoc",
  "itertools",
  "opener",
@@ -868,9 +915,9 @@ dependencies = [
 
 [[package]]
 name = "compiler_builtins"
-version = "0.1.89"
+version = "0.1.91"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9fc9c2080d347a2c316518840ac9194644a9993dfa1e9778ef38979a339f5d8b"
+checksum = "571298a3cce7e2afbd3d61abb91a18667d5ab25993ec577a88ee8ac45f00cc3a"
 dependencies = [
  "cc",
  "rustc-std-workspace-core",
@@ -932,16 +979,31 @@ checksum = "b90f9dcd9490a97db91a85ccd79e38a87e14323f0bb824659ee3274e9143ba37"
 dependencies = [
  "atty",
  "bitflags",
- "concolor-query",
+ "concolor-query 0.1.0",
 ]
 
 [[package]]
+name = "concolor-override"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a855d4a1978dc52fb0536a04d384c2c0c1aa273597f08b77c8c4d3b2eec6037f"
+
+[[package]]
 name = "concolor-query"
 version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "82a90734b3d5dcf656e7624cca6bce9c3a90ee11f900e80141a7427ccfb3d317"
 
 [[package]]
+name = "concolor-query"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "88d11d52c3d7ca2e6d0040212be9e4dbbcd78b6447f535b6b561f449427944cf"
+dependencies = [
+ "windows-sys 0.45.0",
+]
+
+[[package]]
 name = "const-oid"
 version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -2844,7 +2906,7 @@ name = "jsondoclint"
 version = "0.1.0"
 dependencies = [
  "anyhow",
- "clap 4.1.4",
+ "clap 4.2.1",
  "fs-err",
  "rustc-hash",
  "rustdoc-json-types",
@@ -2888,9 +2950,9 @@ dependencies = [
 
 [[package]]
 name = "libffi"
-version = "3.0.1"
+version = "3.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e454b3efb16fba3b17810ae5e41df02b649e564ab3c5a34b3b93ed07ad287e6"
+checksum = "ce826c243048e3d5cec441799724de52e2d42f820468431fc3fceee2341871e2"
 dependencies = [
  "libc",
  "libffi-sys",
@@ -2898,9 +2960,9 @@ dependencies = [
 
 [[package]]
 name = "libffi-sys"
-version = "2.0.0"
+version = "2.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ab4106b7f09d7b87d021334d5618fac1dfcfb824d4c5fe111ff0074dfd242e15"
+checksum = "dc65067b78c0fc069771e8b9a9e02df71e08858bec92c1f101377c67b9dca7c7"
 dependencies = [
  "cc",
 ]
@@ -3110,7 +3172,7 @@ dependencies = [
  "ammonia",
  "anyhow",
  "chrono",
- "clap 4.1.4",
+ "clap 4.2.1",
  "clap_complete",
  "elasticlunr-rs",
  "env_logger 0.10.0",
@@ -4115,7 +4177,7 @@ dependencies = [
 name = "rustbook"
 version = "0.1.0"
 dependencies = [
- "clap 4.1.4",
+ "clap 4.2.1",
  "env_logger 0.7.1",
  "mdbook",
 ]
@@ -6748,9 +6810,9 @@ checksum = "05e42f7c18b8f902290b009cde6d651262f956c98bc51bca4cd1d511c9cd85c7"
 
 [[package]]
 name = "utf8parse"
-version = "0.2.0"
+version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "936e4b492acfd135421d8dca4b1aa80a7bfc26e702ef3af710e0752684df5372"
+checksum = "711b9620af191e0cdc7468a8d14e709c3dcdb115b36f838e601583af800a370a"
 
 [[package]]
 name = "uuid"
diff --git a/compiler/rustc_abi/src/layout.rs b/compiler/rustc_abi/src/layout.rs
index 343f27326ad..aea59ee6aea 100644
--- a/compiler/rustc_abi/src/layout.rs
+++ b/compiler/rustc_abi/src/layout.rs
@@ -289,7 +289,7 @@ pub trait LayoutCalculator {
     fn layout_of_struct_or_enum(
         &self,
         repr: &ReprOptions,
-        variants: &IndexVec<VariantIdx, Vec<Layout<'_>>>,
+        variants: &IndexSlice<VariantIdx, Vec<Layout<'_>>>,
         is_enum: bool,
         is_unsafe_cell: bool,
         scalar_valid_range: (Bound<u128>, Bound<u128>),
@@ -883,7 +883,7 @@ pub trait LayoutCalculator {
     fn layout_of_union(
         &self,
         repr: &ReprOptions,
-        variants: &IndexVec<VariantIdx, Vec<Layout<'_>>>,
+        variants: &IndexSlice<VariantIdx, Vec<Layout<'_>>>,
     ) -> Option<LayoutS> {
         let dl = self.current_data_layout();
         let dl = dl.borrow();
diff --git a/compiler/rustc_abi/src/lib.rs b/compiler/rustc_abi/src/lib.rs
index 428191bc8b9..7b5732b488b 100644
--- a/compiler/rustc_abi/src/lib.rs
+++ b/compiler/rustc_abi/src/lib.rs
@@ -11,7 +11,7 @@ use bitflags::bitflags;
 use rustc_data_structures::intern::Interned;
 #[cfg(feature = "nightly")]
 use rustc_data_structures::stable_hasher::StableOrd;
-use rustc_index::vec::{Idx, IndexVec};
+use rustc_index::vec::{Idx, IndexSlice, IndexVec};
 #[cfg(feature = "nightly")]
 use rustc_macros::HashStable_Generic;
 #[cfg(feature = "nightly")]
diff --git a/compiler/rustc_ast/src/ast.rs b/compiler/rustc_ast/src/ast.rs
index cc0fc7b8358..fb9d71b52a8 100644
--- a/compiler/rustc_ast/src/ast.rs
+++ b/compiler/rustc_ast/src/ast.rs
@@ -167,6 +167,9 @@ pub enum GenericArgs {
     AngleBracketed(AngleBracketedArgs),
     /// The `(A, B)` and `C` in `Foo(A, B) -> C`.
     Parenthesized(ParenthesizedArgs),
+    /// Associated return type bounds, like `T: Trait<method(..): Send>`
+    /// which applies the `Send` bound to the return-type of `method`.
+    ReturnTypeNotation(Span),
 }
 
 impl GenericArgs {
@@ -178,6 +181,7 @@ impl GenericArgs {
         match self {
             AngleBracketed(data) => data.span,
             Parenthesized(data) => data.span,
+            ReturnTypeNotation(span) => *span,
         }
     }
 }
@@ -231,15 +235,15 @@ impl AngleBracketedArg {
     }
 }
 
-impl Into<Option<P<GenericArgs>>> for AngleBracketedArgs {
-    fn into(self) -> Option<P<GenericArgs>> {
-        Some(P(GenericArgs::AngleBracketed(self)))
+impl Into<P<GenericArgs>> for AngleBracketedArgs {
+    fn into(self) -> P<GenericArgs> {
+        P(GenericArgs::AngleBracketed(self))
     }
 }
 
-impl Into<Option<P<GenericArgs>>> for ParenthesizedArgs {
-    fn into(self) -> Option<P<GenericArgs>> {
-        Some(P(GenericArgs::Parenthesized(self)))
+impl Into<P<GenericArgs>> for ParenthesizedArgs {
+    fn into(self) -> P<GenericArgs> {
+        P(GenericArgs::Parenthesized(self))
     }
 }
 
@@ -2887,6 +2891,20 @@ pub struct Fn {
 }
 
 #[derive(Clone, Encodable, Decodable, Debug)]
+pub struct StaticItem {
+    pub ty: P<Ty>,
+    pub mutability: Mutability,
+    pub expr: Option<P<Expr>>,
+}
+
+#[derive(Clone, Encodable, Decodable, Debug)]
+pub struct ConstItem {
+    pub defaultness: Defaultness,
+    pub ty: P<Ty>,
+    pub expr: Option<P<Expr>>,
+}
+
+#[derive(Clone, Encodable, Decodable, Debug)]
 pub enum ItemKind {
     /// An `extern crate` item, with the optional *original* crate name if the crate was renamed.
     ///
@@ -2899,11 +2917,11 @@ pub enum ItemKind {
     /// A static item (`static`).
     ///
     /// E.g., `static FOO: i32 = 42;` or `static FOO: &'static str = "bar";`.
-    Static(P<Ty>, Mutability, Option<P<Expr>>),
+    Static(Box<StaticItem>),
     /// A constant item (`const`).
     ///
     /// E.g., `const FOO: i32 = 42;`.
-    Const(Defaultness, P<Ty>, Option<P<Expr>>),
+    Const(Box<ConstItem>),
     /// A function declaration (`fn`).
     ///
     /// E.g., `fn foo(bar: usize) -> usize { .. }`.
@@ -3019,7 +3037,7 @@ pub type AssocItem = Item<AssocItemKind>;
 pub enum AssocItemKind {
     /// An associated constant, `const $ident: $ty $def?;` where `def ::= "=" $expr? ;`.
     /// If `def` is parsed, then the constant is provided, and otherwise required.
-    Const(Defaultness, P<Ty>, Option<P<Expr>>),
+    Const(Box<ConstItem>),
     /// An associated function.
     Fn(Box<Fn>),
     /// An associated type.
@@ -3031,7 +3049,7 @@ pub enum AssocItemKind {
 impl AssocItemKind {
     pub fn defaultness(&self) -> Defaultness {
         match *self {
-            Self::Const(defaultness, ..)
+            Self::Const(box ConstItem { defaultness, .. })
             | Self::Fn(box Fn { defaultness, .. })
             | Self::Type(box TyAlias { defaultness, .. }) => defaultness,
             Self::MacCall(..) => Defaultness::Final,
@@ -3042,7 +3060,7 @@ impl AssocItemKind {
 impl From<AssocItemKind> for ItemKind {
     fn from(assoc_item_kind: AssocItemKind) -> ItemKind {
         match assoc_item_kind {
-            AssocItemKind::Const(a, b, c) => ItemKind::Const(a, b, c),
+            AssocItemKind::Const(item) => ItemKind::Const(item),
             AssocItemKind::Fn(fn_kind) => ItemKind::Fn(fn_kind),
             AssocItemKind::Type(ty_alias_kind) => ItemKind::TyAlias(ty_alias_kind),
             AssocItemKind::MacCall(a) => ItemKind::MacCall(a),
@@ -3055,7 +3073,7 @@ impl TryFrom<ItemKind> for AssocItemKind {
 
     fn try_from(item_kind: ItemKind) -> Result<AssocItemKind, ItemKind> {
         Ok(match item_kind {
-            ItemKind::Const(a, b, c) => AssocItemKind::Const(a, b, c),
+            ItemKind::Const(item) => AssocItemKind::Const(item),
             ItemKind::Fn(fn_kind) => AssocItemKind::Fn(fn_kind),
             ItemKind::TyAlias(ty_kind) => AssocItemKind::Type(ty_kind),
             ItemKind::MacCall(a) => AssocItemKind::MacCall(a),
@@ -3080,7 +3098,9 @@ pub enum ForeignItemKind {
 impl From<ForeignItemKind> for ItemKind {
     fn from(foreign_item_kind: ForeignItemKind) -> ItemKind {
         match foreign_item_kind {
-            ForeignItemKind::Static(a, b, c) => ItemKind::Static(a, b, c),
+            ForeignItemKind::Static(a, b, c) => {
+                ItemKind::Static(StaticItem { ty: a, mutability: b, expr: c }.into())
+            }
             ForeignItemKind::Fn(fn_kind) => ItemKind::Fn(fn_kind),
             ForeignItemKind::TyAlias(ty_alias_kind) => ItemKind::TyAlias(ty_alias_kind),
             ForeignItemKind::MacCall(a) => ItemKind::MacCall(a),
@@ -3093,7 +3113,9 @@ impl TryFrom<ItemKind> for ForeignItemKind {
 
     fn try_from(item_kind: ItemKind) -> Result<ForeignItemKind, ItemKind> {
         Ok(match item_kind {
-            ItemKind::Static(a, b, c) => ForeignItemKind::Static(a, b, c),
+            ItemKind::Static(box StaticItem { ty: a, mutability: b, expr: c }) => {
+                ForeignItemKind::Static(a, b, c)
+            }
             ItemKind::Fn(fn_kind) => ForeignItemKind::Fn(fn_kind),
             ItemKind::TyAlias(ty_alias_kind) => ForeignItemKind::TyAlias(ty_alias_kind),
             ItemKind::MacCall(a) => ForeignItemKind::MacCall(a),
@@ -3110,8 +3132,8 @@ mod size_asserts {
     use super::*;
     use rustc_data_structures::static_assert_size;
     // tidy-alphabetical-start
-    static_assert_size!(AssocItem, 104);
-    static_assert_size!(AssocItemKind, 32);
+    static_assert_size!(AssocItem, 88);
+    static_assert_size!(AssocItemKind, 16);
     static_assert_size!(Attribute, 32);
     static_assert_size!(Block, 32);
     static_assert_size!(Expr, 72);
diff --git a/compiler/rustc_ast/src/mut_visit.rs b/compiler/rustc_ast/src/mut_visit.rs
index 46e46ab575e..2424073ae53 100644
--- a/compiler/rustc_ast/src/mut_visit.rs
+++ b/compiler/rustc_ast/src/mut_visit.rs
@@ -7,10 +7,10 @@
 //! a `MutVisitor` renaming item names in a module will miss all of those
 //! that are created by the expansion of a macro.
 
-use crate::ast::*;
 use crate::ptr::P;
 use crate::token::{self, Token};
 use crate::tokenstream::*;
+use crate::{ast::*, StaticItem};
 
 use rustc_data_structures::flat_map_in_place::FlatMapInPlace;
 use rustc_data_structures::sync::Lrc;
@@ -561,6 +561,7 @@ pub fn noop_visit_generic_args<T: MutVisitor>(generic_args: &mut GenericArgs, vi
     match generic_args {
         GenericArgs::AngleBracketed(data) => vis.visit_angle_bracketed_parameter_data(data),
         GenericArgs::Parenthesized(data) => vis.visit_parenthesized_parameter_data(data),
+        GenericArgs::ReturnTypeNotation(_span) => {}
     }
 }
 
@@ -1029,14 +1030,12 @@ pub fn noop_visit_item_kind<T: MutVisitor>(kind: &mut ItemKind, vis: &mut T) {
     match kind {
         ItemKind::ExternCrate(_orig_name) => {}
         ItemKind::Use(use_tree) => vis.visit_use_tree(use_tree),
-        ItemKind::Static(ty, _, expr) => {
+        ItemKind::Static(box StaticItem { ty, mutability: _, expr }) => {
             vis.visit_ty(ty);
             visit_opt(expr, |expr| vis.visit_expr(expr));
         }
-        ItemKind::Const(defaultness, ty, expr) => {
-            visit_defaultness(defaultness, vis);
-            vis.visit_ty(ty);
-            visit_opt(expr, |expr| vis.visit_expr(expr));
+        ItemKind::Const(item) => {
+            visit_const_item(item, vis);
         }
         ItemKind::Fn(box Fn { defaultness, generics, sig, body }) => {
             visit_defaultness(defaultness, vis);
@@ -1119,10 +1118,8 @@ pub fn noop_flat_map_assoc_item<T: MutVisitor>(
     visitor.visit_vis(vis);
     visit_attrs(attrs, visitor);
     match kind {
-        AssocItemKind::Const(defaultness, ty, expr) => {
-            visit_defaultness(defaultness, visitor);
-            visitor.visit_ty(ty);
-            visit_opt(expr, |expr| visitor.visit_expr(expr));
+        AssocItemKind::Const(item) => {
+            visit_const_item(item, visitor);
         }
         AssocItemKind::Fn(box Fn { defaultness, generics, sig, body }) => {
             visit_defaultness(defaultness, visitor);
@@ -1152,6 +1149,15 @@ pub fn noop_flat_map_assoc_item<T: MutVisitor>(
     smallvec![item]
 }
 
+fn visit_const_item<T: MutVisitor>(
+    ConstItem { defaultness, ty, expr }: &mut ConstItem,
+    visitor: &mut T,
+) {
+    visit_defaultness(defaultness, visitor);
+    visitor.visit_ty(ty);
+    visit_opt(expr, |expr| visitor.visit_expr(expr));
+}
+
 pub fn noop_visit_fn_header<T: MutVisitor>(header: &mut FnHeader, vis: &mut T) {
     let FnHeader { unsafety, asyncness, constness, ext: _ } = header;
     visit_constness(constness, vis);
diff --git a/compiler/rustc_ast/src/visit.rs b/compiler/rustc_ast/src/visit.rs
index 608f87ab6eb..3b08467fde2 100644
--- a/compiler/rustc_ast/src/visit.rs
+++ b/compiler/rustc_ast/src/visit.rs
@@ -13,7 +13,7 @@
 //! instance, a walker looking for item names in a module will miss all of
 //! those that are created by the expansion of a macro.
 
-use crate::ast::*;
+use crate::{ast::*, StaticItem};
 
 use rustc_span::symbol::Ident;
 use rustc_span::Span;
@@ -305,8 +305,9 @@ pub fn walk_item<'a, V: Visitor<'a>>(visitor: &mut V, item: &'a Item) {
     match &item.kind {
         ItemKind::ExternCrate(_) => {}
         ItemKind::Use(use_tree) => visitor.visit_use_tree(use_tree, item.id, false),
-        ItemKind::Static(typ, _, expr) | ItemKind::Const(_, typ, expr) => {
-            visitor.visit_ty(typ);
+        ItemKind::Static(box StaticItem { ty, mutability: _, expr })
+        | ItemKind::Const(box ConstItem { ty, expr, .. }) => {
+            visitor.visit_ty(ty);
             walk_list!(visitor, visit_expr, expr);
         }
         ItemKind::Fn(box Fn { defaultness: _, generics, sig, body }) => {
@@ -481,6 +482,7 @@ where
             walk_list!(visitor, visit_ty, &data.inputs);
             walk_fn_ret_ty(visitor, &data.output);
         }
+        GenericArgs::ReturnTypeNotation(_span) => {}
     }
 }
 
@@ -673,7 +675,7 @@ pub fn walk_assoc_item<'a, V: Visitor<'a>>(visitor: &mut V, item: &'a AssocItem,
     visitor.visit_ident(ident);
     walk_list!(visitor, visit_attribute, attrs);
     match kind {
-        AssocItemKind::Const(_, ty, expr) => {
+        AssocItemKind::Const(box ConstItem { ty, expr, .. }) => {
             visitor.visit_ty(ty);
             walk_list!(visitor, visit_expr, expr);
         }
diff --git a/compiler/rustc_ast_lowering/messages.ftl b/compiler/rustc_ast_lowering/messages.ftl
index 3ccd84398ec..21b2a3c22fa 100644
--- a/compiler/rustc_ast_lowering/messages.ftl
+++ b/compiler/rustc_ast_lowering/messages.ftl
@@ -139,3 +139,15 @@ ast_lowering_trait_fn_async =
     .label = `async` because of this
     .note = `async` trait functions are not currently supported
     .note2 = consider using the `async-trait` crate: https://crates.io/crates/async-trait
+
+ast_lowering_bad_return_type_notation_inputs =
+    argument types not allowed with return type notation
+    .suggestion = remove the input types
+
+ast_lowering_bad_return_type_notation_needs_dots =
+    return type notation arguments must be elided with `..`
+    .suggestion = add `..`
+
+ast_lowering_bad_return_type_notation_output =
+    return type not allowed with return type notation
+    .suggestion = remove the return type
diff --git a/compiler/rustc_ast_lowering/src/errors.rs b/compiler/rustc_ast_lowering/src/errors.rs
index 5e6b6050bc0..f4e55619ebb 100644
--- a/compiler/rustc_ast_lowering/src/errors.rs
+++ b/compiler/rustc_ast_lowering/src/errors.rs
@@ -347,3 +347,25 @@ pub struct TraitFnAsync {
     #[label]
     pub span: Span,
 }
+
+#[derive(Diagnostic)]
+pub enum BadReturnTypeNotation {
+    #[diag(ast_lowering_bad_return_type_notation_inputs)]
+    Inputs {
+        #[primary_span]
+        #[suggestion(code = "(..)", applicability = "maybe-incorrect")]
+        span: Span,
+    },
+    #[diag(ast_lowering_bad_return_type_notation_needs_dots)]
+    NeedsDots {
+        #[primary_span]
+        #[suggestion(code = "(..)", applicability = "maybe-incorrect")]
+        span: Span,
+    },
+    #[diag(ast_lowering_bad_return_type_notation_output)]
+    Output {
+        #[primary_span]
+        #[suggestion(code = "", applicability = "maybe-incorrect")]
+        span: Span,
+    },
+}
diff --git a/compiler/rustc_ast_lowering/src/item.rs b/compiler/rustc_ast_lowering/src/item.rs
index cc879982abc..f89e254a2f5 100644
--- a/compiler/rustc_ast_lowering/src/item.rs
+++ b/compiler/rustc_ast_lowering/src/item.rs
@@ -12,7 +12,7 @@ use rustc_hir as hir;
 use rustc_hir::def::{DefKind, Res};
 use rustc_hir::def_id::{LocalDefId, CRATE_DEF_ID};
 use rustc_hir::PredicateOrigin;
-use rustc_index::vec::{Idx, IndexVec};
+use rustc_index::vec::{Idx, IndexSlice, IndexVec};
 use rustc_middle::ty::{ResolverAstLowering, TyCtxt};
 use rustc_span::edit_distance::find_best_match_for_name;
 use rustc_span::source_map::DesugaringKind;
@@ -25,7 +25,7 @@ use thin_vec::ThinVec;
 pub(super) struct ItemLowerer<'a, 'hir> {
     pub(super) tcx: TyCtxt<'hir>,
     pub(super) resolver: &'a mut ResolverAstLowering,
-    pub(super) ast_index: &'a IndexVec<LocalDefId, AstOwner<'a>>,
+    pub(super) ast_index: &'a IndexSlice<LocalDefId, AstOwner<'a>>,
     pub(super) owners: &'a mut IndexVec<LocalDefId, hir::MaybeOwner<&'hir hir::OwnerInfo<'hir>>>,
 }
 
@@ -229,12 +229,12 @@ impl<'hir> LoweringContext<'_, 'hir> {
 
                 self.lower_use_tree(use_tree, &prefix, id, vis_span, ident, attrs)
             }
-            ItemKind::Static(t, m, e) => {
+            ItemKind::Static(box ast::StaticItem { ty: t, mutability: m, expr: e }) => {
                 let (ty, body_id) = self.lower_const_item(t, span, e.as_deref());
                 hir::ItemKind::Static(ty, *m, body_id)
             }
-            ItemKind::Const(_, t, e) => {
-                let (ty, body_id) = self.lower_const_item(t, span, e.as_deref());
+            ItemKind::Const(box ast::ConstItem { ty, expr, .. }) => {
+                let (ty, body_id) = self.lower_const_item(ty, span, expr.as_deref());
                 hir::ItemKind::Const(ty, body_id)
             }
             ItemKind::Fn(box Fn {
@@ -708,10 +708,10 @@ impl<'hir> LoweringContext<'_, 'hir> {
         let trait_item_def_id = hir_id.expect_owner();
 
         let (generics, kind, has_default) = match &i.kind {
-            AssocItemKind::Const(_, ty, default) => {
+            AssocItemKind::Const(box ConstItem { ty, expr, .. }) => {
                 let ty =
                     self.lower_ty(ty, &ImplTraitContext::Disallowed(ImplTraitPosition::ConstTy));
-                let body = default.as_ref().map(|x| self.lower_const_body(i.span, Some(x)));
+                let body = expr.as_ref().map(|x| self.lower_const_body(i.span, Some(x)));
                 (hir::Generics::empty(), hir::TraitItemKind::Const(ty, body), body.is_some())
             }
             AssocItemKind::Fn(box Fn { sig, generics, body: None, .. }) => {
@@ -809,7 +809,7 @@ impl<'hir> LoweringContext<'_, 'hir> {
         self.lower_attrs(hir_id, &i.attrs);
 
         let (generics, kind) = match &i.kind {
-            AssocItemKind::Const(_, ty, expr) => {
+            AssocItemKind::Const(box ConstItem { ty, expr, .. }) => {
                 let ty =
                     self.lower_ty(ty, &ImplTraitContext::Disallowed(ImplTraitPosition::ConstTy));
                 (
diff --git a/compiler/rustc_ast_lowering/src/lib.rs b/compiler/rustc_ast_lowering/src/lib.rs
index 0b6b02ba00f..ca659db4dbe 100644
--- a/compiler/rustc_ast_lowering/src/lib.rs
+++ b/compiler/rustc_ast_lowering/src/lib.rs
@@ -60,13 +60,13 @@ use rustc_hir::def::{DefKind, LifetimeRes, Namespace, PartialRes, PerNS, Res};
 use rustc_hir::def_id::{LocalDefId, CRATE_DEF_ID};
 use rustc_hir::definitions::DefPathData;
 use rustc_hir::{ConstArg, GenericArg, ItemLocalId, ParamName, TraitCandidate};
-use rustc_index::vec::{Idx, IndexVec};
+use rustc_index::vec::{Idx, IndexSlice, IndexVec};
 use rustc_macros::fluent_messages;
 use rustc_middle::{
     span_bug,
     ty::{ResolverAstLowering, TyCtxt},
 };
-use rustc_session::parse::feature_err;
+use rustc_session::parse::{add_feature_diagnostics, feature_err};
 use rustc_span::hygiene::MacroKind;
 use rustc_span::source_map::DesugaringKind;
 use rustc_span::symbol::{kw, sym, Ident, Symbol};
@@ -414,7 +414,7 @@ fn index_crate<'a>(
 /// This hash will then be part of the crate_hash which is stored in the metadata.
 fn compute_hir_hash(
     tcx: TyCtxt<'_>,
-    owners: &IndexVec<LocalDefId, hir::MaybeOwner<&hir::OwnerInfo<'_>>>,
+    owners: &IndexSlice<LocalDefId, hir::MaybeOwner<&hir::OwnerInfo<'_>>>,
 ) -> Fingerprint {
     let mut hir_body_nodes: Vec<_> = owners
         .iter_enumerated()
@@ -482,7 +482,7 @@ enum ParamMode {
 }
 
 enum ParenthesizedGenericArgs {
-    Ok,
+    ParenSugar,
     Err,
 }
 
@@ -987,14 +987,56 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
                 GenericArgs::AngleBracketed(data) => {
                     self.lower_angle_bracketed_parameter_data(data, ParamMode::Explicit, itctx).0
                 }
+                &GenericArgs::ReturnTypeNotation(span) => GenericArgsCtor {
+                    args: Default::default(),
+                    bindings: &[],
+                    parenthesized: hir::GenericArgsParentheses::ReturnTypeNotation,
+                    span,
+                },
                 GenericArgs::Parenthesized(data) => {
-                    self.emit_bad_parenthesized_trait_in_assoc_ty(data);
-                    self.lower_angle_bracketed_parameter_data(
-                        &data.as_angle_bracketed_args(),
-                        ParamMode::Explicit,
-                        itctx,
-                    )
-                    .0
+                    if let Some(start_char) = constraint.ident.as_str().chars().next()
+                        && start_char.is_ascii_lowercase()
+                    {
+                        let mut err = if !data.inputs.is_empty() {
+                            self.tcx.sess.create_err(errors::BadReturnTypeNotation::Inputs {
+                                span: data.inputs_span,
+                            })
+                        } else if let FnRetTy::Ty(ty) = &data.output {
+                            self.tcx.sess.create_err(errors::BadReturnTypeNotation::Output {
+                                span: data.inputs_span.shrink_to_hi().to(ty.span),
+                            })
+                        } else {
+                            self.tcx.sess.create_err(errors::BadReturnTypeNotation::NeedsDots {
+                                span: data.inputs_span,
+                            })
+                        };
+                        if !self.tcx.features().return_type_notation
+                            && self.tcx.sess.is_nightly_build()
+                        {
+                            add_feature_diagnostics(
+                                &mut err,
+                                &self.tcx.sess.parse_sess,
+                                sym::return_type_notation,
+                            );
+                        }
+                        err.emit();
+                        GenericArgsCtor {
+                            args: Default::default(),
+                            bindings: &[],
+                            parenthesized: hir::GenericArgsParentheses::ReturnTypeNotation,
+                            span: data.span,
+                        }
+                    } else {
+                        self.emit_bad_parenthesized_trait_in_assoc_ty(data);
+                        // FIXME(return_type_notation): we could issue a feature error
+                        // if the parens are empty and there's no return type.
+                        self.lower_angle_bracketed_parameter_data(
+                            &data.as_angle_bracketed_args(),
+                            ParamMode::Explicit,
+                            itctx,
+                        )
+                        .0
+                    }
                 }
             };
             gen_args_ctor.into_generic_args(self)
@@ -2075,7 +2117,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
         let future_args = self.arena.alloc(hir::GenericArgs {
             args: &[],
             bindings: arena_vec![self; self.output_ty_binding(span, output_ty)],
-            parenthesized: false,
+            parenthesized: hir::GenericArgsParentheses::No,
             span_ext: DUMMY_SP,
         });
 
@@ -2595,13 +2637,15 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
 struct GenericArgsCtor<'hir> {
     args: SmallVec<[hir::GenericArg<'hir>; 4]>,
     bindings: &'hir [hir::TypeBinding<'hir>],
-    parenthesized: bool,
+    parenthesized: hir::GenericArgsParentheses,
     span: Span,
 }
 
 impl<'hir> GenericArgsCtor<'hir> {
     fn is_empty(&self) -> bool {
-        self.args.is_empty() && self.bindings.is_empty() && !self.parenthesized
+        self.args.is_empty()
+            && self.bindings.is_empty()
+            && self.parenthesized == hir::GenericArgsParentheses::No
     }
 
     fn into_generic_args(self, this: &LoweringContext<'_, 'hir>) -> &'hir hir::GenericArgs<'hir> {
diff --git a/compiler/rustc_ast_lowering/src/path.rs b/compiler/rustc_ast_lowering/src/path.rs
index 592fc5aa645..1c47a969696 100644
--- a/compiler/rustc_ast_lowering/src/path.rs
+++ b/compiler/rustc_ast_lowering/src/path.rs
@@ -13,6 +13,7 @@ use rustc_span::symbol::{kw, sym, Ident};
 use rustc_span::{BytePos, Span, DUMMY_SP};
 
 use smallvec::{smallvec, SmallVec};
+use thin_vec::ThinVec;
 
 impl<'a, 'hir> LoweringContext<'a, 'hir> {
     #[instrument(level = "trace", skip(self))]
@@ -51,7 +52,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
                     let parenthesized_generic_args = match base_res {
                         // `a::b::Trait(Args)`
                         Res::Def(DefKind::Trait, _) if i + 1 == proj_start => {
-                            ParenthesizedGenericArgs::Ok
+                            ParenthesizedGenericArgs::ParenSugar
                         }
                         // `a::b::Trait(Args)::TraitItem`
                         Res::Def(DefKind::AssocFn, _)
@@ -59,10 +60,10 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
                         | Res::Def(DefKind::AssocTy, _)
                             if i + 2 == proj_start =>
                         {
-                            ParenthesizedGenericArgs::Ok
+                            ParenthesizedGenericArgs::ParenSugar
                         }
                         // Avoid duplicated errors.
-                        Res::Err => ParenthesizedGenericArgs::Ok,
+                        Res::Err => ParenthesizedGenericArgs::ParenSugar,
                         // An error
                         _ => ParenthesizedGenericArgs::Err,
                     };
@@ -180,7 +181,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
                     self.lower_angle_bracketed_parameter_data(data, param_mode, itctx)
                 }
                 GenericArgs::Parenthesized(data) => match parenthesized_generic_args {
-                    ParenthesizedGenericArgs::Ok => {
+                    ParenthesizedGenericArgs::ParenSugar => {
                         self.lower_parenthesized_parameter_data(data, itctx)
                     }
                     ParenthesizedGenericArgs::Err => {
@@ -218,13 +219,25 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
                         )
                     }
                 },
+                &GenericArgs::ReturnTypeNotation(span) => {
+                    self.tcx.sess.emit_err(GenericTypeWithParentheses { span, sub: None });
+                    (
+                        self.lower_angle_bracketed_parameter_data(
+                            &AngleBracketedArgs { span, args: ThinVec::default() },
+                            param_mode,
+                            itctx,
+                        )
+                        .0,
+                        false,
+                    )
+                }
             }
         } else {
             (
                 GenericArgsCtor {
                     args: Default::default(),
                     bindings: &[],
-                    parenthesized: false,
+                    parenthesized: hir::GenericArgsParentheses::No,
                     span: path_span.shrink_to_hi(),
                 },
                 param_mode == ParamMode::Optional,
@@ -233,7 +246,9 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
 
         let has_lifetimes =
             generic_args.args.iter().any(|arg| matches!(arg, GenericArg::Lifetime(_)));
-        if !generic_args.parenthesized && !has_lifetimes {
+
+        // FIXME(return_type_notation): Is this correct? I think so.
+        if generic_args.parenthesized != hir::GenericArgsParentheses::ParenSugar && !has_lifetimes {
             self.maybe_insert_elided_lifetimes_in_path(
                 path_span,
                 segment.id,
@@ -328,7 +343,12 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
             AngleBracketedArg::Constraint(c) => Some(self.lower_assoc_ty_constraint(c, itctx)),
             AngleBracketedArg::Arg(_) => None,
         }));
-        let ctor = GenericArgsCtor { args, bindings, parenthesized: false, span: data.span };
+        let ctor = GenericArgsCtor {
+            args,
+            bindings,
+            parenthesized: hir::GenericArgsParentheses::No,
+            span: data.span,
+        };
         (ctor, !has_non_lt_args && param_mode == ParamMode::Optional)
     }
 
@@ -376,7 +396,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
             GenericArgsCtor {
                 args,
                 bindings: arena_vec![self; binding],
-                parenthesized: true,
+                parenthesized: hir::GenericArgsParentheses::ParenSugar,
                 span: data.inputs_span,
             },
             false,
@@ -396,7 +416,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
         let gen_args = self.arena.alloc(hir::GenericArgs {
             args,
             bindings,
-            parenthesized: false,
+            parenthesized: hir::GenericArgsParentheses::No,
             span_ext: DUMMY_SP,
         });
         hir::TypeBinding {
diff --git a/compiler/rustc_ast_passes/src/ast_validation.rs b/compiler/rustc_ast_passes/src/ast_validation.rs
index 93c854cc809..236ebd04ae8 100644
--- a/compiler/rustc_ast_passes/src/ast_validation.rs
+++ b/compiler/rustc_ast_passes/src/ast_validation.rs
@@ -9,8 +9,8 @@
 use itertools::{Either, Itertools};
 use rustc_ast::ptr::P;
 use rustc_ast::visit::{self, AssocCtxt, BoundKind, FnCtxt, FnKind, Visitor};
-use rustc_ast::walk_list;
 use rustc_ast::*;
+use rustc_ast::{walk_list, StaticItem};
 use rustc_ast_pretty::pprust::{self, State};
 use rustc_data_structures::fx::FxIndexMap;
 use rustc_macros::Subdiagnostic;
@@ -983,14 +983,14 @@ impl<'a> Visitor<'a> for AstValidator<'a> {
                     self.err_handler().emit_err(errors::FieldlessUnion { span: item.span });
                 }
             }
-            ItemKind::Const(def, .., None) => {
-                self.check_defaultness(item.span, *def);
+            ItemKind::Const(box ConstItem { defaultness, expr: None, .. }) => {
+                self.check_defaultness(item.span, *defaultness);
                 self.session.emit_err(errors::ConstWithoutBody {
                     span: item.span,
                     replace_span: self.ending_semi_or_hi(item.span),
                 });
             }
-            ItemKind::Static(.., None) => {
+            ItemKind::Static(box StaticItem { expr: None, .. }) => {
                 self.session.emit_err(errors::StaticWithoutBody {
                     span: item.span,
                     replace_span: self.ending_semi_or_hi(item.span),
@@ -1075,6 +1075,7 @@ impl<'a> Visitor<'a> for AstValidator<'a> {
                     self.with_impl_trait(None, |this| this.visit_ty(ty));
                 }
             }
+            GenericArgs::ReturnTypeNotation(_span) => {}
         }
     }
 
@@ -1258,13 +1259,11 @@ impl<'a> Visitor<'a> for AstValidator<'a> {
 
         if ctxt == AssocCtxt::Impl {
             match &item.kind {
-                AssocItemKind::Const(_, _, body) => {
-                    if body.is_none() {
-                        self.session.emit_err(errors::AssocConstWithoutBody {
-                            span: item.span,
-                            replace_span: self.ending_semi_or_hi(item.span),
-                        });
-                    }
+                AssocItemKind::Const(box ConstItem { expr: None, .. }) => {
+                    self.session.emit_err(errors::AssocConstWithoutBody {
+                        span: item.span,
+                        replace_span: self.ending_semi_or_hi(item.span),
+                    });
                 }
                 AssocItemKind::Fn(box Fn { body, .. }) => {
                     if body.is_none() {
@@ -1387,16 +1386,19 @@ fn deny_equality_constraints(
                                     match &mut assoc_path.segments[len].args {
                                         Some(args) => match args.deref_mut() {
                                             GenericArgs::Parenthesized(_) => continue,
+                                            GenericArgs::ReturnTypeNotation(_span) => continue,
                                             GenericArgs::AngleBracketed(args) => {
                                                 args.args.push(arg);
                                             }
                                         },
                                         empty_args => {
-                                            *empty_args = AngleBracketedArgs {
-                                                span: ident.span,
-                                                args: thin_vec![arg],
-                                            }
-                                            .into();
+                                            *empty_args = Some(
+                                                AngleBracketedArgs {
+                                                    span: ident.span,
+                                                    args: thin_vec![arg],
+                                                }
+                                                .into(),
+                                            );
                                         }
                                     }
                                     err.assoc = Some(errors::AssociatedSuggestion {
diff --git a/compiler/rustc_ast_passes/src/feature_gate.rs b/compiler/rustc_ast_passes/src/feature_gate.rs
index 344a1e7f5e7..b3923b651eb 100644
--- a/compiler/rustc_ast_passes/src/feature_gate.rs
+++ b/compiler/rustc_ast_passes/src/feature_gate.rs
@@ -482,12 +482,21 @@ impl<'a> Visitor<'a> for PostExpansionVisitor<'a> {
 
     fn visit_assoc_constraint(&mut self, constraint: &'a AssocConstraint) {
         if let AssocConstraintKind::Bound { .. } = constraint.kind {
-            gate_feature_post!(
-                &self,
-                associated_type_bounds,
-                constraint.span,
-                "associated type bounds are unstable"
-            )
+            if let Some(args) = constraint.gen_args.as_ref()
+                && matches!(
+                    args,
+                    ast::GenericArgs::ReturnTypeNotation(..)
+                )
+            {
+                // RTN is gated below with a `gate_all`.
+            } else {
+                gate_feature_post!(
+                    &self,
+                    associated_type_bounds,
+                    constraint.span,
+                    "associated type bounds are unstable"
+                )
+            }
         }
         visit::walk_assoc_constraint(self, constraint)
     }
@@ -577,6 +586,7 @@ pub fn check_crate(krate: &ast::Crate, sess: &Session) {
     gate_all!(yeet_expr, "`do yeet` expression is experimental");
     gate_all!(dyn_star, "`dyn*` trait objects are experimental");
     gate_all!(const_closures, "const closures are experimental");
+    gate_all!(return_type_notation, "return type notation is experimental");
 
     // All uses of `gate_all!` below this point were added in #65742,
     // and subsequently disabled (with the non-early gating readded).
diff --git a/compiler/rustc_ast_pretty/src/pprust/state.rs b/compiler/rustc_ast_pretty/src/pprust/state.rs
index 694d688bf1f..80c451d6753 100644
--- a/compiler/rustc_ast_pretty/src/pprust/state.rs
+++ b/compiler/rustc_ast_pretty/src/pprust/state.rs
@@ -936,6 +936,10 @@ impl<'a> PrintState<'a> for State<'a> {
                 self.word(")");
                 self.print_fn_ret_ty(&data.output);
             }
+
+            ast::GenericArgs::ReturnTypeNotation(_span) => {
+                self.word("(..)");
+            }
         }
     }
 }
diff --git a/compiler/rustc_ast_pretty/src/pprust/state/item.rs b/compiler/rustc_ast_pretty/src/pprust/state/item.rs
index bf2c73a66a2..c465f8c948a 100644
--- a/compiler/rustc_ast_pretty/src/pprust/state/item.rs
+++ b/compiler/rustc_ast_pretty/src/pprust/state/item.rs
@@ -2,6 +2,7 @@ use crate::pp::Breaks::Inconsistent;
 use crate::pprust::state::delimited::IterDelimited;
 use crate::pprust::state::{AnnNode, PrintState, State, INDENT_UNIT};
 
+use ast::StaticItem;
 use rustc_ast as ast;
 use rustc_ast::GenericBound;
 use rustc_ast::ModKind;
@@ -156,7 +157,7 @@ impl<'a> State<'a> {
                 self.print_use_tree(tree);
                 self.word(";");
             }
-            ast::ItemKind::Static(ty, mutbl, body) => {
+            ast::ItemKind::Static(box StaticItem { ty, mutability: mutbl, expr: body }) => {
                 let def = ast::Defaultness::Final;
                 self.print_item_const(
                     item.ident,
@@ -167,8 +168,15 @@ impl<'a> State<'a> {
                     def,
                 );
             }
-            ast::ItemKind::Const(def, ty, body) => {
-                self.print_item_const(item.ident, None, ty, body.as_deref(), &item.vis, *def);
+            ast::ItemKind::Const(box ast::ConstItem { defaultness, ty, expr }) => {
+                self.print_item_const(
+                    item.ident,
+                    None,
+                    ty,
+                    expr.as_deref(),
+                    &item.vis,
+                    *defaultness,
+                );
             }
             ast::ItemKind::Fn(box ast::Fn { defaultness, sig, generics, body }) => {
                 self.print_fn_full(
@@ -507,8 +515,8 @@ impl<'a> State<'a> {
             ast::AssocItemKind::Fn(box ast::Fn { defaultness, sig, generics, body }) => {
                 self.print_fn_full(sig, ident, generics, vis, *defaultness, body.as_deref(), attrs);
             }
-            ast::AssocItemKind::Const(def, ty, body) => {
-                self.print_item_const(ident, None, ty, body.as_deref(), vis, *def);
+            ast::AssocItemKind::Const(box ast::ConstItem { defaultness, ty, expr }) => {
+                self.print_item_const(ident, None, ty, expr.as_deref(), vis, *defaultness);
             }
             ast::AssocItemKind::Type(box ast::TyAlias {
                 defaultness,
diff --git a/compiler/rustc_borrowck/src/constraints/mod.rs b/compiler/rustc_borrowck/src/constraints/mod.rs
index f370c02161b..d2d9779dbea 100644
--- a/compiler/rustc_borrowck/src/constraints/mod.rs
+++ b/compiler/rustc_borrowck/src/constraints/mod.rs
@@ -2,7 +2,7 @@
 #![deny(rustc::diagnostic_outside_of_impl)]
 
 use rustc_data_structures::graph::scc::Sccs;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::{IndexSlice, IndexVec};
 use rustc_middle::mir::ConstraintCategory;
 use rustc_middle::ty::{RegionVid, VarianceDiagInfo};
 use rustc_span::Span;
@@ -60,7 +60,9 @@ impl<'tcx> OutlivesConstraintSet<'tcx> {
         Sccs::new(region_graph)
     }
 
-    pub(crate) fn outlives(&self) -> &IndexVec<OutlivesConstraintIndex, OutlivesConstraint<'tcx>> {
+    pub(crate) fn outlives(
+        &self,
+    ) -> &IndexSlice<OutlivesConstraintIndex, OutlivesConstraint<'tcx>> {
         &self.outlives
     }
 }
diff --git a/compiler/rustc_borrowck/src/consumers.rs b/compiler/rustc_borrowck/src/consumers.rs
index 055b281bc2e..cb1a6522223 100644
--- a/compiler/rustc_borrowck/src/consumers.rs
+++ b/compiler/rustc_borrowck/src/consumers.rs
@@ -3,7 +3,7 @@
 //! This file provides API for compiler consumers.
 
 use rustc_hir::def_id::LocalDefId;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::IndexSlice;
 use rustc_infer::infer::{DefiningAnchor, TyCtxtInferExt};
 use rustc_middle::mir::Body;
 use rustc_middle::ty::{self, TyCtxt};
@@ -35,6 +35,6 @@ pub fn get_body_with_borrowck_facts(
     let (input_body, promoted) = tcx.mir_promoted(def);
     let infcx = tcx.infer_ctxt().with_opaque_type_inference(DefiningAnchor::Bind(def.did)).build();
     let input_body: &Body<'_> = &input_body.borrow();
-    let promoted: &IndexVec<_, _> = &promoted.borrow();
+    let promoted: &IndexSlice<_, _> = &promoted.borrow();
     *super::do_mir_borrowck(&infcx, input_body, promoted, true).1.unwrap()
 }
diff --git a/compiler/rustc_borrowck/src/diagnostics/explain_borrow.rs b/compiler/rustc_borrowck/src/diagnostics/explain_borrow.rs
index 62b3f3ecfc3..8860395e71c 100644
--- a/compiler/rustc_borrowck/src/diagnostics/explain_borrow.rs
+++ b/compiler/rustc_borrowck/src/diagnostics/explain_borrow.rs
@@ -3,7 +3,7 @@
 use rustc_errors::{Applicability, Diagnostic};
 use rustc_hir as hir;
 use rustc_hir::intravisit::Visitor;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::IndexSlice;
 use rustc_infer::infer::NllRegionVariableOrigin;
 use rustc_middle::mir::{
     Body, CastKind, ConstraintCategory, FakeReadCause, Local, LocalInfo, Location, Operand, Place,
@@ -60,7 +60,7 @@ impl<'tcx> BorrowExplanation<'tcx> {
         &self,
         tcx: TyCtxt<'tcx>,
         body: &Body<'tcx>,
-        local_names: &IndexVec<Local, Option<Symbol>>,
+        local_names: &IndexSlice<Local, Option<Symbol>>,
         err: &mut Diagnostic,
         borrow_desc: &str,
         borrow_span: Option<Span>,
diff --git a/compiler/rustc_borrowck/src/diagnostics/mod.rs b/compiler/rustc_borrowck/src/diagnostics/mod.rs
index da0456856ac..7bd4331c5ed 100644
--- a/compiler/rustc_borrowck/src/diagnostics/mod.rs
+++ b/compiler/rustc_borrowck/src/diagnostics/mod.rs
@@ -6,6 +6,7 @@ use rustc_errors::{Applicability, Diagnostic};
 use rustc_hir as hir;
 use rustc_hir::def::{CtorKind, Namespace};
 use rustc_hir::GeneratorKind;
+use rustc_index::vec::IndexSlice;
 use rustc_infer::infer::{LateBoundRegionConversionTime, TyCtxtInferExt};
 use rustc_middle::mir::tcx::PlaceTy;
 use rustc_middle::mir::{
@@ -825,7 +826,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
                     debug!("move_spans: def_id={:?} place={:?}", closure_def_id, place);
                     let places = &[Operand::Move(place)];
                     if let Some((args_span, generator_kind, capture_kind_span, path_span)) =
-                        self.closure_span(closure_def_id, moved_place, places)
+                        self.closure_span(closure_def_id, moved_place, IndexSlice::from_raw(places))
                     {
                         return ClosureUse {
                             generator_kind,
@@ -975,7 +976,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
         &self,
         def_id: LocalDefId,
         target_place: PlaceRef<'tcx>,
-        places: &[Operand<'tcx>],
+        places: &IndexSlice<FieldIdx, Operand<'tcx>>,
     ) -> Option<(Span, Option<GeneratorKind>, Span, Span)> {
         debug!(
             "closure_span: def_id={:?} target_place={:?} places={:?}",
diff --git a/compiler/rustc_borrowck/src/diagnostics/var_name.rs b/compiler/rustc_borrowck/src/diagnostics/var_name.rs
index ada3310d807..80b2787ce0c 100644
--- a/compiler/rustc_borrowck/src/diagnostics/var_name.rs
+++ b/compiler/rustc_borrowck/src/diagnostics/var_name.rs
@@ -3,7 +3,7 @@
 
 use crate::Upvar;
 use crate::{nll::ToRegionVid, region_infer::RegionInferenceContext};
-use rustc_index::vec::{Idx, IndexVec};
+use rustc_index::vec::{Idx, IndexSlice};
 use rustc_middle::mir::{Body, Local};
 use rustc_middle::ty::{RegionVid, TyCtxt};
 use rustc_span::source_map::Span;
@@ -14,7 +14,7 @@ impl<'tcx> RegionInferenceContext<'tcx> {
         &self,
         tcx: TyCtxt<'tcx>,
         body: &Body<'tcx>,
-        local_names: &IndexVec<Local, Option<Symbol>>,
+        local_names: &IndexSlice<Local, Option<Symbol>>,
         upvars: &[Upvar<'tcx>],
         fr: RegionVid,
     ) -> Option<(Option<Symbol>, Span)> {
@@ -113,7 +113,7 @@ impl<'tcx> RegionInferenceContext<'tcx> {
     pub(crate) fn get_argument_name_and_span_for_region(
         &self,
         body: &Body<'tcx>,
-        local_names: &IndexVec<Local, Option<Symbol>>,
+        local_names: &IndexSlice<Local, Option<Symbol>>,
         argument_index: usize,
     ) -> (Option<Symbol>, Span) {
         let implicit_inputs = self.universal_regions().defining_ty.implicit_inputs();
diff --git a/compiler/rustc_borrowck/src/lib.rs b/compiler/rustc_borrowck/src/lib.rs
index 8b463a018a8..1d4d1406239 100644
--- a/compiler/rustc_borrowck/src/lib.rs
+++ b/compiler/rustc_borrowck/src/lib.rs
@@ -23,7 +23,7 @@ use rustc_errors::{Diagnostic, DiagnosticBuilder, DiagnosticMessage, Subdiagnost
 use rustc_hir as hir;
 use rustc_hir::def_id::LocalDefId;
 use rustc_index::bit_set::ChunkedBitSet;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::{IndexSlice, IndexVec};
 use rustc_infer::infer::{
     DefiningAnchor, InferCtxt, NllRegionVariableOrigin, RegionVariableOrigin, TyCtxtInferExt,
 };
@@ -154,7 +154,7 @@ fn mir_borrowck(tcx: TyCtxt<'_>, def: ty::WithOptConstParam<LocalDefId>) -> &Bor
     let infcx =
         tcx.infer_ctxt().with_opaque_type_inference(DefiningAnchor::Bind(hir_owner.def_id)).build();
     let input_body: &Body<'_> = &input_body.borrow();
-    let promoted: &IndexVec<_, _> = &promoted.borrow();
+    let promoted: &IndexSlice<_, _> = &promoted.borrow();
     let opt_closure_req = do_mir_borrowck(&infcx, input_body, promoted, false).0;
     debug!("mir_borrowck done");
 
@@ -170,7 +170,7 @@ fn mir_borrowck(tcx: TyCtxt<'_>, def: ty::WithOptConstParam<LocalDefId>) -> &Bor
 fn do_mir_borrowck<'tcx>(
     infcx: &InferCtxt<'tcx>,
     input_body: &Body<'tcx>,
-    input_promoted: &IndexVec<Promoted, Body<'tcx>>,
+    input_promoted: &IndexSlice<Promoted, Body<'tcx>>,
     return_body_with_facts: bool,
 ) -> (BorrowCheckResult<'tcx>, Option<Box<BodyWithBorrowckFacts<'tcx>>>) {
     let def = input_body.source.with_opt_param().as_local().unwrap();
@@ -223,7 +223,7 @@ fn do_mir_borrowck<'tcx>(
     // be modified (in place) to contain non-lexical lifetimes. It
     // will have a lifetime tied to the inference context.
     let mut body_owned = input_body.clone();
-    let mut promoted = input_promoted.clone();
+    let mut promoted = input_promoted.to_owned();
     let free_regions =
         nll::replace_regions_in_mir(&infcx, param_env, &mut body_owned, &mut promoted);
     let body = &body_owned; // no further changes
@@ -1343,7 +1343,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
                             self.infcx.tcx.mir_borrowck(def_id);
                         debug!("{:?} used_mut_upvars={:?}", def_id, used_mut_upvars);
                         for field in used_mut_upvars {
-                            self.propagate_closure_used_mut_upvar(&operands[field.index()]);
+                            self.propagate_closure_used_mut_upvar(&operands[*field]);
                         }
                     }
                     AggregateKind::Adt(..)
diff --git a/compiler/rustc_borrowck/src/member_constraints.rs b/compiler/rustc_borrowck/src/member_constraints.rs
index b6c5d4245d7..f637e6a95ac 100644
--- a/compiler/rustc_borrowck/src/member_constraints.rs
+++ b/compiler/rustc_borrowck/src/member_constraints.rs
@@ -2,7 +2,7 @@
 #![deny(rustc::diagnostic_outside_of_impl)]
 use rustc_data_structures::captures::Captures;
 use rustc_data_structures::fx::FxIndexMap;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::{IndexSlice, IndexVec};
 use rustc_middle::infer::MemberConstraint;
 use rustc_middle::ty::{self, Ty};
 use rustc_span::Span;
@@ -215,7 +215,7 @@ where
 /// target_list: A -> B -> C -> D -> E -> F -> (None)
 /// ```
 fn append_list(
-    constraints: &mut IndexVec<NllMemberConstraintIndex, NllMemberConstraint<'_>>,
+    constraints: &mut IndexSlice<NllMemberConstraintIndex, NllMemberConstraint<'_>>,
     target_list: NllMemberConstraintIndex,
     source_list: NllMemberConstraintIndex,
 ) {
diff --git a/compiler/rustc_borrowck/src/nll.rs b/compiler/rustc_borrowck/src/nll.rs
index f0068fc9226..06ecbdb1707 100644
--- a/compiler/rustc_borrowck/src/nll.rs
+++ b/compiler/rustc_borrowck/src/nll.rs
@@ -4,7 +4,7 @@
 
 use rustc_data_structures::fx::FxIndexMap;
 use rustc_hir::def_id::LocalDefId;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::IndexSlice;
 use rustc_middle::mir::{create_dump_file, dump_enabled, dump_mir, PassWhere};
 use rustc_middle::mir::{
     BasicBlock, Body, ClosureOutlivesSubject, ClosureRegionRequirements, LocalKind, Location,
@@ -59,7 +59,7 @@ pub(crate) fn replace_regions_in_mir<'tcx>(
     infcx: &BorrowckInferCtxt<'_, 'tcx>,
     param_env: ty::ParamEnv<'tcx>,
     body: &mut Body<'tcx>,
-    promoted: &mut IndexVec<Promoted, Body<'tcx>>,
+    promoted: &mut IndexSlice<Promoted, Body<'tcx>>,
 ) -> UniversalRegions<'tcx> {
     let def = body.source.with_opt_param().as_local().unwrap();
 
@@ -158,7 +158,7 @@ pub(crate) fn compute_regions<'cx, 'tcx>(
     infcx: &BorrowckInferCtxt<'_, 'tcx>,
     universal_regions: UniversalRegions<'tcx>,
     body: &Body<'tcx>,
-    promoted: &IndexVec<Promoted, Body<'tcx>>,
+    promoted: &IndexSlice<Promoted, Body<'tcx>>,
     location_table: &LocationTable,
     param_env: ty::ParamEnv<'tcx>,
     flow_inits: &mut ResultsCursor<'cx, 'tcx, MaybeInitializedPlaces<'cx, 'tcx>>,
diff --git a/compiler/rustc_borrowck/src/region_infer/mod.rs b/compiler/rustc_borrowck/src/region_infer/mod.rs
index 03f175daca9..f67af4584a4 100644
--- a/compiler/rustc_borrowck/src/region_infer/mod.rs
+++ b/compiler/rustc_borrowck/src/region_infer/mod.rs
@@ -7,7 +7,7 @@ use rustc_data_structures::fx::{FxIndexMap, FxIndexSet};
 use rustc_data_structures::graph::scc::Sccs;
 use rustc_errors::Diagnostic;
 use rustc_hir::def_id::CRATE_DEF_ID;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::{IndexSlice, IndexVec};
 use rustc_infer::infer::outlives::test_type_match;
 use rustc_infer::infer::region_constraints::{GenericKind, VarInfos, VerifyBound, VerifyIfEq};
 use rustc_infer::infer::{InferCtxt, NllRegionVariableOrigin, RegionVariableOrigin};
@@ -399,7 +399,7 @@ impl<'tcx> RegionInferenceContext<'tcx> {
     /// the minimum, or narrowest, universe.
     fn compute_scc_universes(
         constraint_sccs: &Sccs<RegionVid, ConstraintSccIndex>,
-        definitions: &IndexVec<RegionVid, RegionDefinition<'tcx>>,
+        definitions: &IndexSlice<RegionVid, RegionDefinition<'tcx>>,
     ) -> IndexVec<ConstraintSccIndex, ty::UniverseIndex> {
         let num_sccs = constraint_sccs.num_sccs();
         let mut scc_universes = IndexVec::from_elem_n(ty::UniverseIndex::MAX, num_sccs);
@@ -486,7 +486,7 @@ impl<'tcx> RegionInferenceContext<'tcx> {
     /// more details.
     fn compute_scc_representatives(
         constraints_scc: &Sccs<RegionVid, ConstraintSccIndex>,
-        definitions: &IndexVec<RegionVid, RegionDefinition<'tcx>>,
+        definitions: &IndexSlice<RegionVid, RegionDefinition<'tcx>>,
     ) -> IndexVec<ConstraintSccIndex, ty::RegionVid> {
         let num_sccs = constraints_scc.num_sccs();
         let next_region_vid = definitions.next_index();
diff --git a/compiler/rustc_borrowck/src/renumber.rs b/compiler/rustc_borrowck/src/renumber.rs
index 016f6f78dfa..0fbf01dbe44 100644
--- a/compiler/rustc_borrowck/src/renumber.rs
+++ b/compiler/rustc_borrowck/src/renumber.rs
@@ -1,7 +1,7 @@
 #![deny(rustc::untranslatable_diagnostic)]
 #![deny(rustc::diagnostic_outside_of_impl)]
 use crate::BorrowckInferCtxt;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::IndexSlice;
 use rustc_infer::infer::NllRegionVariableOrigin;
 use rustc_middle::mir::visit::{MutVisitor, TyContext};
 use rustc_middle::mir::Constant;
@@ -16,7 +16,7 @@ use rustc_span::{Span, Symbol};
 pub fn renumber_mir<'tcx>(
     infcx: &BorrowckInferCtxt<'_, 'tcx>,
     body: &mut Body<'tcx>,
-    promoted: &mut IndexVec<Promoted, Body<'tcx>>,
+    promoted: &mut IndexSlice<Promoted, Body<'tcx>>,
 ) {
     debug!(?body.arg_count);
 
diff --git a/compiler/rustc_borrowck/src/type_check/liveness/local_use_map.rs b/compiler/rustc_borrowck/src/type_check/liveness/local_use_map.rs
index 8023ef60d20..2c387edfef0 100644
--- a/compiler/rustc_borrowck/src/type_check/liveness/local_use_map.rs
+++ b/compiler/rustc_borrowck/src/type_check/liveness/local_use_map.rs
@@ -63,7 +63,7 @@ impl LocalUseMap {
         elements: &RegionValueElements,
         body: &Body<'_>,
     ) -> Self {
-        let nones = IndexVec::from_elem_n(None, body.local_decls.len());
+        let nones = IndexVec::from_elem(None, &body.local_decls);
         let mut local_use_map = LocalUseMap {
             first_def_at: nones.clone(),
             first_use_at: nones.clone(),
@@ -76,7 +76,7 @@ impl LocalUseMap {
         }
 
         let mut locals_with_use_data: IndexVec<Local, bool> =
-            IndexVec::from_elem_n(false, body.local_decls.len());
+            IndexVec::from_elem(false, &body.local_decls);
         live_locals.iter().for_each(|&local| locals_with_use_data[local] = true);
 
         LocalUseMapBuild { local_use_map: &mut local_use_map, elements, locals_with_use_data }
diff --git a/compiler/rustc_borrowck/src/type_check/mod.rs b/compiler/rustc_borrowck/src/type_check/mod.rs
index 10bbce37760..2fc4e32ecb2 100644
--- a/compiler/rustc_borrowck/src/type_check/mod.rs
+++ b/compiler/rustc_borrowck/src/type_check/mod.rs
@@ -14,7 +14,7 @@ use rustc_hir as hir;
 use rustc_hir::def::DefKind;
 use rustc_hir::def_id::LocalDefId;
 use rustc_hir::lang_items::LangItem;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::{IndexSlice, IndexVec};
 use rustc_infer::infer::canonical::QueryRegionConstraints;
 use rustc_infer::infer::outlives::env::RegionBoundPairs;
 use rustc_infer::infer::region_constraints::RegionConstraintData;
@@ -125,7 +125,7 @@ pub(crate) fn type_check<'mir, 'tcx>(
     infcx: &BorrowckInferCtxt<'_, 'tcx>,
     param_env: ty::ParamEnv<'tcx>,
     body: &Body<'tcx>,
-    promoted: &IndexVec<Promoted, Body<'tcx>>,
+    promoted: &IndexSlice<Promoted, Body<'tcx>>,
     universal_regions: &Rc<UniversalRegions<'tcx>>,
     location_table: &LocationTable,
     borrow_set: &BorrowSet<'tcx>,
@@ -292,7 +292,7 @@ enum FieldAccessError {
 /// is a problem.
 struct TypeVerifier<'a, 'b, 'tcx> {
     cx: &'a mut TypeChecker<'b, 'tcx>,
-    promoted: &'b IndexVec<Promoted, Body<'tcx>>,
+    promoted: &'b IndexSlice<Promoted, Body<'tcx>>,
     last_span: Span,
     errors_reported: bool,
 }
@@ -493,7 +493,7 @@ impl<'a, 'b, 'tcx> Visitor<'tcx> for TypeVerifier<'a, 'b, 'tcx> {
 impl<'a, 'b, 'tcx> TypeVerifier<'a, 'b, 'tcx> {
     fn new(
         cx: &'a mut TypeChecker<'b, 'tcx>,
-        promoted: &'b IndexVec<Promoted, Body<'tcx>>,
+        promoted: &'b IndexSlice<Promoted, Body<'tcx>>,
     ) -> Self {
         TypeVerifier { promoted, last_span: cx.body.span, cx, errors_reported: false }
     }
@@ -1716,7 +1716,7 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
     fn aggregate_field_ty(
         &mut self,
         ak: &AggregateKind<'tcx>,
-        field_index: usize,
+        field_index: FieldIdx,
         location: Location,
     ) -> Result<Ty<'tcx>, FieldAccessError> {
         let tcx = self.tcx();
@@ -1725,8 +1725,7 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
             AggregateKind::Adt(adt_did, variant_index, substs, _, active_field_index) => {
                 let def = tcx.adt_def(adt_did);
                 let variant = &def.variant(variant_index);
-                let adj_field_index =
-                    FieldIdx::from_usize(active_field_index.unwrap_or(field_index));
+                let adj_field_index = active_field_index.unwrap_or(field_index);
                 if let Some(field) = variant.fields.get(adj_field_index) {
                     Ok(self.normalize(field.ty(tcx, substs), location))
                 } else {
@@ -1734,7 +1733,7 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
                 }
             }
             AggregateKind::Closure(_, substs) => {
-                match substs.as_closure().upvar_tys().nth(field_index) {
+                match substs.as_closure().upvar_tys().nth(field_index.as_usize()) {
                     Some(ty) => Ok(ty),
                     None => Err(FieldAccessError::OutOfRange {
                         field_count: substs.as_closure().upvar_tys().count(),
@@ -1745,7 +1744,7 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
                 // It doesn't make sense to look at a field beyond the prefix;
                 // these require a variant index, and are not initialized in
                 // aggregate rvalues.
-                match substs.as_generator().prefix_tys().nth(field_index) {
+                match substs.as_generator().prefix_tys().nth(field_index.as_usize()) {
                     Some(ty) => Ok(ty),
                     None => Err(FieldAccessError::OutOfRange {
                         field_count: substs.as_generator().prefix_tys().count(),
@@ -2350,7 +2349,7 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
         body: &Body<'tcx>,
         rvalue: &Rvalue<'tcx>,
         aggregate_kind: &AggregateKind<'tcx>,
-        operands: &[Operand<'tcx>],
+        operands: &IndexSlice<FieldIdx, Operand<'tcx>>,
         location: Location,
     ) {
         let tcx = self.tcx();
@@ -2362,7 +2361,7 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
             return;
         }
 
-        for (i, operand) in operands.iter().enumerate() {
+        for (i, operand) in operands.iter_enumerated() {
             let field_ty = match self.aggregate_field_ty(aggregate_kind, i, location) {
                 Ok(field_ty) => field_ty,
                 Err(FieldAccessError::OutOfRange { field_count }) => {
@@ -2370,8 +2369,8 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
                         self,
                         rvalue,
                         "accessed field #{} but variant only has {}",
-                        i,
-                        field_count
+                        i.as_u32(),
+                        field_count,
                     );
                     continue;
                 }
diff --git a/compiler/rustc_builtin_macros/src/global_allocator.rs b/compiler/rustc_builtin_macros/src/global_allocator.rs
index 41b51bae736..866cc5adbf3 100644
--- a/compiler/rustc_builtin_macros/src/global_allocator.rs
+++ b/compiler/rustc_builtin_macros/src/global_allocator.rs
@@ -25,12 +25,12 @@ pub fn expand(
     // FIXME - if we get deref patterns, use them to reduce duplication here
     let (item, is_stmt, ty_span) =
         if let Annotatable::Item(item) = &item
-            && let ItemKind::Static(ty, ..) = &item.kind
+            && let ItemKind::Static(box ast::StaticItem { ty, ..}) = &item.kind
         {
             (item, false, ecx.with_def_site_ctxt(ty.span))
         } else if let Annotatable::Stmt(stmt) = &item
             && let StmtKind::Item(item) = &stmt.kind
-            && let ItemKind::Static(ty, ..) = &item.kind
+            && let ItemKind::Static(box ast::StaticItem { ty, ..}) = &item.kind
         {
             (item, true, ecx.with_def_site_ctxt(ty.span))
         } else {
diff --git a/compiler/rustc_builtin_macros/src/test.rs b/compiler/rustc_builtin_macros/src/test.rs
index 44b9c4718a7..a76ed4ee6ce 100644
--- a/compiler/rustc_builtin_macros/src/test.rs
+++ b/compiler/rustc_builtin_macros/src/test.rs
@@ -254,25 +254,27 @@ pub fn expand_test_or_bench(
 
     let location_info = get_location_info(cx, &item);
 
-    let mut test_const = cx.item(
-        sp,
-        Ident::new(item.ident.name, sp),
-        thin_vec![
-            // #[cfg(test)]
-            cx.attr_nested_word(sym::cfg, sym::test, attr_sp),
-            // #[rustc_test_marker = "test_case_sort_key"]
-            cx.attr_name_value_str(sym::rustc_test_marker, test_path_symbol, attr_sp),
-        ],
-        // const $ident: test::TestDescAndFn =
-        ast::ItemKind::Const(
-            ast::Defaultness::Final,
-            cx.ty(sp, ast::TyKind::Path(None, test_path("TestDescAndFn"))),
-            // test::TestDescAndFn {
-            Some(
-                cx.expr_struct(
-                    sp,
-                    test_path("TestDescAndFn"),
-                    thin_vec![
+    let mut test_const =
+        cx.item(
+            sp,
+            Ident::new(item.ident.name, sp),
+            thin_vec![
+                // #[cfg(test)]
+                cx.attr_nested_word(sym::cfg, sym::test, attr_sp),
+                // #[rustc_test_marker = "test_case_sort_key"]
+                cx.attr_name_value_str(sym::rustc_test_marker, test_path_symbol, attr_sp),
+            ],
+            // const $ident: test::TestDescAndFn =
+            ast::ItemKind::Const(
+                ast::ConstItem {
+                    defaultness: ast::Defaultness::Final,
+                    ty: cx.ty(sp, ast::TyKind::Path(None, test_path("TestDescAndFn"))),
+                    // test::TestDescAndFn {
+                    expr: Some(
+                        cx.expr_struct(
+                            sp,
+                            test_path("TestDescAndFn"),
+                            thin_vec![
                         // desc: test::TestDesc {
                         field(
                             "desc",
@@ -359,10 +361,12 @@ pub fn expand_test_or_bench(
                         // testfn: test::StaticTestFn(...) | test::StaticBenchFn(...)
                         field("testfn", test_fn), // }
                     ],
-                ), // }
+                        ), // }
+                    ),
+                }
+                .into(),
             ),
-        ),
-    );
+        );
     test_const = test_const.map(|mut tc| {
         tc.vis.kind = ast::VisibilityKind::Public;
         tc
diff --git a/compiler/rustc_codegen_cranelift/src/base.rs b/compiler/rustc_codegen_cranelift/src/base.rs
index 98112fe0830..2630f02e6eb 100644
--- a/compiler/rustc_codegen_cranelift/src/base.rs
+++ b/compiler/rustc_codegen_cranelift/src/base.rs
@@ -802,14 +802,15 @@ fn codegen_stmt<'tcx>(
                     if active_field_index.is_some() {
                         assert_eq!(operands.len(), 1);
                     }
-                    for (i, operand) in operands.iter().enumerate() {
+                    for (i, operand) in operands.iter_enumerated() {
                         let operand = codegen_operand(fx, operand);
                         let field_index = active_field_index.unwrap_or(i);
                         let to = if let mir::AggregateKind::Array(_) = **kind {
-                            let index = fx.bcx.ins().iconst(fx.pointer_type, field_index as i64);
+                            let array_index = i64::from(field_index.as_u32());
+                            let index = fx.bcx.ins().iconst(fx.pointer_type, array_index);
                             variant_dest.place_index(fx, index)
                         } else {
-                            variant_dest.place_field(fx, FieldIdx::new(field_index))
+                            variant_dest.place_field(fx, field_index)
                         };
                         to.write_cvalue(fx, operand);
                     }
diff --git a/compiler/rustc_codegen_llvm/src/builder.rs b/compiler/rustc_codegen_llvm/src/builder.rs
index 580451ba265..63e8a67db53 100644
--- a/compiler/rustc_codegen_llvm/src/builder.rs
+++ b/compiler/rustc_codegen_llvm/src/builder.rs
@@ -1190,8 +1190,8 @@ impl<'a, 'll, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> {
         // Set KCFI operand bundle
         let is_indirect_call = unsafe { llvm::LLVMIsAFunction(llfn).is_none() };
         let kcfi_bundle =
-            if self.tcx.sess.is_sanitizer_kcfi_enabled() && fn_abi.is_some() && is_indirect_call {
-                let kcfi_typeid = kcfi_typeid_for_fnabi(self.tcx, fn_abi.unwrap());
+            if let Some(fn_abi) = fn_abi && self.tcx.sess.is_sanitizer_kcfi_enabled() && is_indirect_call {
+                let kcfi_typeid = kcfi_typeid_for_fnabi(self.tcx, fn_abi);
                 Some(llvm::OperandBundleDef::new("kcfi", &[self.const_u32(kcfi_typeid)]))
             } else {
                 None
diff --git a/compiler/rustc_codegen_llvm/src/common.rs b/compiler/rustc_codegen_llvm/src/common.rs
index efa0c13226e..4f8b5abd901 100644
--- a/compiler/rustc_codegen_llvm/src/common.rs
+++ b/compiler/rustc_codegen_llvm/src/common.rs
@@ -378,8 +378,7 @@ pub(crate) fn get_dllimport<'tcx>(
     name: &str,
 ) -> Option<&'tcx DllImport> {
     tcx.native_library(id)
-        .map(|lib| lib.dll_imports.iter().find(|di| di.name.as_str() == name))
-        .flatten()
+        .and_then(|lib| lib.dll_imports.iter().find(|di| di.name.as_str() == name))
 }
 
 pub(crate) fn is_mingw_gnu_toolchain(target: &Target) -> bool {
diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs b/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
index e2a592d851a..4bf6762d1f6 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
@@ -830,24 +830,7 @@ pub fn build_compile_unit_di_node<'ll, 'tcx>(
     }
     .unwrap_or_default();
     let split_name = split_name.to_str().unwrap();
-
-    // FIXME(#60020):
-    //
-    //    This should actually be
-    //
-    //        let kind = DebugEmissionKind::from_generic(tcx.sess.opts.debuginfo);
-    //
-    //    That is, we should set LLVM's emission kind to `LineTablesOnly` if
-    //    we are compiling with "limited" debuginfo. However, some of the
-    //    existing tools relied on slightly more debuginfo being generated than
-    //    would be the case with `LineTablesOnly`, and we did not want to break
-    //    these tools in a "drive-by fix", without a good idea or plan about
-    //    what limited debuginfo should exactly look like. So for now we keep
-    //    the emission kind as `FullDebug`.
-    //
-    //    See https://github.com/rust-lang/rust/issues/60020 for details.
-    let kind = DebugEmissionKind::FullDebug;
-    assert!(tcx.sess.opts.debuginfo != DebugInfo::None);
+    let kind = DebugEmissionKind::from_generic(tcx.sess.opts.debuginfo);
 
     unsafe {
         let compile_unit_file = llvm::LLVMRustDIBuilderCreateFile(
diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/mod.rs b/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/mod.rs
index c3439591b92..55a217f59f9 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/mod.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/mod.rs
@@ -3,7 +3,7 @@ use rustc_codegen_ssa::debuginfo::{
     wants_c_like_enum_debuginfo,
 };
 use rustc_hir::def::CtorKind;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::IndexSlice;
 use rustc_middle::{
     bug,
     mir::{GeneratorLayout, GeneratorSavedLocal},
@@ -323,7 +323,7 @@ pub fn build_generator_variant_struct_type_di_node<'ll, 'tcx>(
     generator_type_and_layout: TyAndLayout<'tcx>,
     generator_type_di_node: &'ll DIType,
     generator_layout: &GeneratorLayout<'tcx>,
-    state_specific_upvar_names: &IndexVec<GeneratorSavedLocal, Option<Symbol>>,
+    state_specific_upvar_names: &IndexSlice<GeneratorSavedLocal, Option<Symbol>>,
     common_upvar_names: &[String],
 ) -> &'ll DIType {
     let variant_name = GeneratorSubsts::variant_name(variant_index);
diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/mod.rs b/compiler/rustc_codegen_llvm/src/debuginfo/mod.rs
index 5392534cfcb..41a75c9d775 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/mod.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/mod.rs
@@ -402,7 +402,7 @@ impl<'ll, 'tcx> DebugInfoMethods<'tcx> for CodegenCx<'ll, 'tcx> {
             cx: &CodegenCx<'ll, 'tcx>,
             fn_abi: &FnAbi<'tcx, Ty<'tcx>>,
         ) -> &'ll DIArray {
-            if cx.sess().opts.debuginfo == DebugInfo::Limited {
+            if cx.sess().opts.debuginfo != DebugInfo::Full {
                 return create_DIArray(DIB(cx), &[]);
             }
 
diff --git a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
index 0d63e634ad8..556c6602ff4 100644
--- a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
@@ -946,15 +946,27 @@ pub mod debuginfo {
         NoDebug,
         FullDebug,
         LineTablesOnly,
+        DebugDirectivesOnly,
     }
 
     impl DebugEmissionKind {
         pub fn from_generic(kind: rustc_session::config::DebugInfo) -> Self {
+            // We should be setting LLVM's emission kind to `LineTablesOnly` if
+            // we are compiling with "limited" debuginfo. However, some of the
+            // existing tools relied on slightly more debuginfo being generated than
+            // would be the case with `LineTablesOnly`, and we did not want to break
+            // these tools in a "drive-by fix", without a good idea or plan about
+            // what limited debuginfo should exactly look like. So for now we are
+            // instead adding a new debuginfo option "line-tables-only" so as to
+            // not break anything and to allow users to have 'limited' debug info.
+            //
+            // See https://github.com/rust-lang/rust/issues/60020 for details.
             use rustc_session::config::DebugInfo;
             match kind {
                 DebugInfo::None => DebugEmissionKind::NoDebug,
-                DebugInfo::Limited => DebugEmissionKind::LineTablesOnly,
-                DebugInfo::Full => DebugEmissionKind::FullDebug,
+                DebugInfo::LineDirectivesOnly => DebugEmissionKind::DebugDirectivesOnly,
+                DebugInfo::LineTablesOnly => DebugEmissionKind::LineTablesOnly,
+                DebugInfo::Limited | DebugInfo::Full => DebugEmissionKind::FullDebug,
             }
         }
     }
diff --git a/compiler/rustc_codegen_ssa/src/back/linker.rs b/compiler/rustc_codegen_ssa/src/back/linker.rs
index 69bb00f804d..65dfc325a11 100644
--- a/compiler/rustc_codegen_ssa/src/back/linker.rs
+++ b/compiler/rustc_codegen_ssa/src/back/linker.rs
@@ -1121,9 +1121,12 @@ impl<'a> Linker for EmLinker<'a> {
 
     fn debuginfo(&mut self, _strip: Strip, _: &[PathBuf]) {
         // Preserve names or generate source maps depending on debug info
+        // For more information see https://emscripten.org/docs/tools_reference/emcc.html#emcc-g
         self.cmd.arg(match self.sess.opts.debuginfo {
             DebugInfo::None => "-g0",
-            DebugInfo::Limited => "--profiling-funcs",
+            DebugInfo::Limited | DebugInfo::LineTablesOnly | DebugInfo::LineDirectivesOnly => {
+                "--profiling-funcs"
+            }
             DebugInfo::Full => "-g",
         });
     }
diff --git a/compiler/rustc_codegen_ssa/src/base.rs b/compiler/rustc_codegen_ssa/src/base.rs
index 6c4ca8f7fb1..c5ca7936a2b 100644
--- a/compiler/rustc_codegen_ssa/src/base.rs
+++ b/compiler/rustc_codegen_ssa/src/base.rs
@@ -306,9 +306,9 @@ pub fn coerce_unsized_into<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>>(
         (&ty::Adt(def_a, _), &ty::Adt(def_b, _)) => {
             assert_eq!(def_a, def_b);
 
-            for i in 0..def_a.variant(FIRST_VARIANT).fields.len() {
-                let src_f = src.project_field(bx, i);
-                let dst_f = dst.project_field(bx, i);
+            for i in def_a.variant(FIRST_VARIANT).fields.indices() {
+                let src_f = src.project_field(bx, i.as_usize());
+                let dst_f = dst.project_field(bx, i.as_usize());
 
                 if dst_f.layout.is_zst() {
                     continue;
diff --git a/compiler/rustc_codegen_ssa/src/coverageinfo/map.rs b/compiler/rustc_codegen_ssa/src/coverageinfo/map.rs
index 1a6495cb15c..1ea13040072 100644
--- a/compiler/rustc_codegen_ssa/src/coverageinfo/map.rs
+++ b/compiler/rustc_codegen_ssa/src/coverageinfo/map.rs
@@ -1,6 +1,6 @@
 pub use super::ffi::*;
 
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::{IndexSlice, IndexVec};
 use rustc_middle::mir::coverage::{
     CodeRegion, CounterValueReference, ExpressionOperandId, InjectedExpressionId,
     InjectedExpressionIndex, MappedExpressionIndex, Op,
@@ -205,7 +205,7 @@ impl<'tcx> FunctionCoverage<'tcx> {
         // `expression_index`s lower than the referencing `Expression`. Therefore, it is
         // reasonable to look up the new index of an expression operand while the `new_indexes`
         // vector is only complete up to the current `ExpressionIndex`.
-        let id_to_counter = |new_indexes: &IndexVec<
+        let id_to_counter = |new_indexes: &IndexSlice<
             InjectedExpressionIndex,
             Option<MappedExpressionIndex>,
         >,
diff --git a/compiler/rustc_codegen_ssa/src/mir/analyze.rs b/compiler/rustc_codegen_ssa/src/mir/analyze.rs
index 0ce395e912d..dcf533dc39c 100644
--- a/compiler/rustc_codegen_ssa/src/mir/analyze.rs
+++ b/compiler/rustc_codegen_ssa/src/mir/analyze.rs
@@ -5,7 +5,7 @@ use super::FunctionCx;
 use crate::traits::*;
 use rustc_data_structures::graph::dominators::Dominators;
 use rustc_index::bit_set::BitSet;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::{IndexSlice, IndexVec};
 use rustc_middle::mir::traversal;
 use rustc_middle::mir::visit::{MutatingUseContext, NonMutatingUseContext, PlaceContext, Visitor};
 use rustc_middle::mir::{self, Location, TerminatorKind};
@@ -277,7 +277,7 @@ impl CleanupKind {
 /// Recover that structure in an analyze pass.
 pub fn cleanup_kinds(mir: &mir::Body<'_>) -> IndexVec<mir::BasicBlock, CleanupKind> {
     fn discover_masters<'tcx>(
-        result: &mut IndexVec<mir::BasicBlock, CleanupKind>,
+        result: &mut IndexSlice<mir::BasicBlock, CleanupKind>,
         mir: &mir::Body<'tcx>,
     ) {
         for (bb, data) in mir.basic_blocks.iter_enumerated() {
@@ -308,7 +308,10 @@ pub fn cleanup_kinds(mir: &mir::Body<'_>) -> IndexVec<mir::BasicBlock, CleanupKi
         }
     }
 
-    fn propagate<'tcx>(result: &mut IndexVec<mir::BasicBlock, CleanupKind>, mir: &mir::Body<'tcx>) {
+    fn propagate<'tcx>(
+        result: &mut IndexSlice<mir::BasicBlock, CleanupKind>,
+        mir: &mir::Body<'tcx>,
+    ) {
         let mut funclet_succs = IndexVec::from_elem(None, &mir.basic_blocks);
 
         let mut set_successor = |funclet: mir::BasicBlock, succ| match funclet_succs[funclet] {
diff --git a/compiler/rustc_codegen_ssa/src/mir/debuginfo.rs b/compiler/rustc_codegen_ssa/src/mir/debuginfo.rs
index ff25d1e3823..280f0207116 100644
--- a/compiler/rustc_codegen_ssa/src/mir/debuginfo.rs
+++ b/compiler/rustc_codegen_ssa/src/mir/debuginfo.rs
@@ -165,11 +165,15 @@ fn calculate_debuginfo_offset<
             mir::ProjectionElem::Downcast(_, variant) => {
                 place = place.downcast(bx, variant);
             }
-            _ => span_bug!(
-                var.source_info.span,
-                "unsupported var debuginfo place `{:?}`",
-                mir::Place { local, projection: var.projection },
-            ),
+            _ => {
+                // Sanity check for `can_use_in_debuginfo`.
+                debug_assert!(!elem.can_use_in_debuginfo());
+                span_bug!(
+                    var.source_info.span,
+                    "unsupported var debuginfo place `{:?}`",
+                    mir::Place { local, projection: var.projection },
+                )
+            }
         }
     }
 
diff --git a/compiler/rustc_codegen_ssa/src/mir/rvalue.rs b/compiler/rustc_codegen_ssa/src/mir/rvalue.rs
index 3b4522a99dd..400512fe4e9 100644
--- a/compiler/rustc_codegen_ssa/src/mir/rvalue.rs
+++ b/compiler/rustc_codegen_ssa/src/mir/rvalue.rs
@@ -123,16 +123,16 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
                 if active_field_index.is_some() {
                     assert_eq!(operands.len(), 1);
                 }
-                for (i, operand) in operands.iter().enumerate() {
+                for (i, operand) in operands.iter_enumerated() {
                     let op = self.codegen_operand(bx, operand);
                     // Do not generate stores and GEPis for zero-sized fields.
                     if !op.layout.is_zst() {
                         let field_index = active_field_index.unwrap_or(i);
                         let field = if let mir::AggregateKind::Array(_) = **kind {
-                            let llindex = bx.cx().const_usize(field_index as u64);
+                            let llindex = bx.cx().const_usize(field_index.as_u32().into());
                             variant_dest.project_index(bx, llindex)
                         } else {
-                            variant_dest.project_field(bx, field_index)
+                            variant_dest.project_field(bx, field_index.as_usize())
                         };
                         op.val.store(bx, field);
                     }
diff --git a/compiler/rustc_const_eval/src/interpret/operand.rs b/compiler/rustc_const_eval/src/interpret/operand.rs
index 8d5192bca67..5310ef0bb3e 100644
--- a/compiler/rustc_const_eval/src/interpret/operand.rs
+++ b/compiler/rustc_const_eval/src/interpret/operand.rs
@@ -612,14 +612,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
         span: Option<Span>,
         layout: Option<TyAndLayout<'tcx>>,
     ) -> InterpResult<'tcx, OpTy<'tcx, M::Provenance>> {
-        // FIXME(const_prop): normalization needed b/c const prop lint in
-        // `mir_drops_elaborated_and_const_checked`, which happens before
-        // optimized MIR. Only after optimizing the MIR can we guarantee
-        // that the `RevealAll` pass has happened and that the body's consts
-        // are normalized, so any call to resolve before that needs to be
-        // manually normalized.
-        let val = self.tcx.normalize_erasing_regions(self.param_env, *val);
-        match val {
+        match *val {
             mir::ConstantKind::Ty(ct) => {
                 let ty = ct.ty();
                 let valtree = self.eval_ty_constant(ct, span)?;
diff --git a/compiler/rustc_const_eval/src/interpret/place.rs b/compiler/rustc_const_eval/src/interpret/place.rs
index a95bcaa3f99..03b09cf830b 100644
--- a/compiler/rustc_const_eval/src/interpret/place.rs
+++ b/compiler/rustc_const_eval/src/interpret/place.rs
@@ -5,10 +5,11 @@
 use either::{Either, Left, Right};
 
 use rustc_ast::Mutability;
+use rustc_index::vec::IndexSlice;
 use rustc_middle::mir;
 use rustc_middle::ty;
 use rustc_middle::ty::layout::{LayoutOf, TyAndLayout};
-use rustc_target::abi::{self, Abi, Align, HasDataLayout, Size, FIRST_VARIANT};
+use rustc_target::abi::{self, Abi, Align, FieldIdx, HasDataLayout, Size, FIRST_VARIANT};
 
 use super::{
     alloc_range, mir_assign_valid_types, AllocId, AllocRef, AllocRefMut, CheckInAllocMsg,
@@ -787,7 +788,7 @@ where
     pub fn write_aggregate(
         &mut self,
         kind: &mir::AggregateKind<'tcx>,
-        operands: &[mir::Operand<'tcx>],
+        operands: &IndexSlice<FieldIdx, mir::Operand<'tcx>>,
         dest: &PlaceTy<'tcx, M::Provenance>,
     ) -> InterpResult<'tcx> {
         self.write_uninit(&dest)?;
@@ -801,9 +802,9 @@ where
         if active_field_index.is_some() {
             assert_eq!(operands.len(), 1);
         }
-        for (field_index, operand) in operands.iter().enumerate() {
+        for (field_index, operand) in operands.iter_enumerated() {
             let field_index = active_field_index.unwrap_or(field_index);
-            let field_dest = self.place_field(&variant_dest, field_index)?;
+            let field_dest = self.place_field(&variant_dest, field_index.as_usize())?;
             let op = self.eval_operand(operand, Some(field_dest.layout))?;
             self.copy_op(&op, &field_dest, /*allow_transmute*/ false)?;
         }
diff --git a/compiler/rustc_const_eval/src/transform/promote_consts.rs b/compiler/rustc_const_eval/src/transform/promote_consts.rs
index 40c848de2be..6774e5a5837 100644
--- a/compiler/rustc_const_eval/src/transform/promote_consts.rs
+++ b/compiler/rustc_const_eval/src/transform/promote_consts.rs
@@ -21,7 +21,7 @@ use rustc_middle::ty::subst::InternalSubsts;
 use rustc_middle::ty::{self, List, TyCtxt, TypeVisitableExt};
 use rustc_span::Span;
 
-use rustc_index::vec::{Idx, IndexVec};
+use rustc_index::vec::{Idx, IndexSlice, IndexVec};
 
 use std::cell::Cell;
 use std::{cmp, iter, mem};
@@ -184,7 +184,7 @@ pub fn collect_temps_and_candidates<'tcx>(
 /// This wraps an `Item`, and has access to all fields of that `Item` via `Deref` coercion.
 struct Validator<'a, 'tcx> {
     ccx: &'a ConstCx<'a, 'tcx>,
-    temps: &'a mut IndexVec<Local, TempState>,
+    temps: &'a mut IndexSlice<Local, TempState>,
 }
 
 impl<'a, 'tcx> std::ops::Deref for Validator<'a, 'tcx> {
@@ -669,7 +669,7 @@ impl<'tcx> Validator<'_, 'tcx> {
 // FIXME(eddyb) remove the differences for promotability in `static`, `const`, `const fn`.
 pub fn validate_candidates(
     ccx: &ConstCx<'_, '_>,
-    temps: &mut IndexVec<Local, TempState>,
+    temps: &mut IndexSlice<Local, TempState>,
     candidates: &[Candidate],
 ) -> Vec<Candidate> {
     let mut validator = Validator { ccx, temps };
diff --git a/compiler/rustc_const_eval/src/transform/validate.rs b/compiler/rustc_const_eval/src/transform/validate.rs
index cd5c92f7342..e798c9d236e 100644
--- a/compiler/rustc_const_eval/src/transform/validate.rs
+++ b/compiler/rustc_const_eval/src/transform/validate.rs
@@ -5,13 +5,12 @@ use rustc_index::bit_set::BitSet;
 use rustc_index::vec::IndexVec;
 use rustc_infer::traits::Reveal;
 use rustc_middle::mir::interpret::Scalar;
-use rustc_middle::mir::visit::NonUseContext::VarDebugInfo;
-use rustc_middle::mir::visit::{PlaceContext, Visitor};
+use rustc_middle::mir::visit::{NonUseContext, PlaceContext, Visitor};
 use rustc_middle::mir::{
     traversal, BasicBlock, BinOp, Body, BorrowKind, CastKind, CopyNonOverlapping, Local, Location,
     MirPass, MirPhase, NonDivergingIntrinsic, Operand, Place, PlaceElem, PlaceRef, ProjectionElem,
     RetagKind, RuntimePhase, Rvalue, SourceScope, Statement, StatementKind, Terminator,
-    TerminatorKind, UnOp, START_BLOCK,
+    TerminatorKind, UnOp, VarDebugInfo, VarDebugInfoContents, START_BLOCK,
 };
 use rustc_middle::ty::{self, InstanceDef, ParamEnv, Ty, TyCtxt, TypeVisitableExt};
 use rustc_mir_dataflow::impls::MaybeStorageLive;
@@ -419,13 +418,49 @@ impl<'a, 'tcx> Visitor<'tcx> for TypeChecker<'a, 'tcx> {
         self.super_projection_elem(local, proj_base, elem, context, location);
     }
 
+    fn visit_var_debug_info(&mut self, debuginfo: &VarDebugInfo<'tcx>) {
+        let check_place = |place: Place<'_>| {
+            if place.projection.iter().any(|p| !p.can_use_in_debuginfo()) {
+                self.fail(
+                    START_BLOCK.start_location(),
+                    format!("illegal place {:?} in debuginfo for {:?}", place, debuginfo.name),
+                );
+            }
+        };
+        match debuginfo.value {
+            VarDebugInfoContents::Const(_) => {}
+            VarDebugInfoContents::Place(place) => check_place(place),
+            VarDebugInfoContents::Composite { ty, ref fragments } => {
+                for f in fragments {
+                    check_place(f.contents);
+                    if ty.is_union() || ty.is_enum() {
+                        self.fail(
+                            START_BLOCK.start_location(),
+                            format!("invalid type {:?} for composite debuginfo", ty),
+                        );
+                    }
+                    if f.projection.iter().any(|p| !matches!(p, PlaceElem::Field(..))) {
+                        self.fail(
+                            START_BLOCK.start_location(),
+                            format!(
+                                "illegal projection {:?} in debuginfo for {:?}",
+                                f.projection, debuginfo.name
+                            ),
+                        );
+                    }
+                }
+            }
+        }
+        self.super_var_debug_info(debuginfo);
+    }
+
     fn visit_place(&mut self, place: &Place<'tcx>, cntxt: PlaceContext, location: Location) {
         // Set off any `bug!`s in the type computation code
         let _ = place.ty(&self.body.local_decls, self.tcx);
 
         if self.mir_phase >= MirPhase::Runtime(RuntimePhase::Initial)
             && place.projection.len() > 1
-            && cntxt != PlaceContext::NonUse(VarDebugInfo)
+            && cntxt != PlaceContext::NonUse(NonUseContext::VarDebugInfo)
             && place.projection[1..].contains(&ProjectionElem::Deref)
         {
             self.fail(location, format!("{:?}, has deref at the wrong place", place));
@@ -677,8 +712,7 @@ impl<'a, 'tcx> Visitor<'tcx> for TypeChecker<'a, 'tcx> {
                     );
                 }
                 if let Rvalue::CopyForDeref(place) = rvalue {
-                    if !place.ty(&self.body.local_decls, self.tcx).ty.builtin_deref(true).is_some()
-                    {
+                    if place.ty(&self.body.local_decls, self.tcx).ty.builtin_deref(true).is_none() {
                         self.fail(
                             location,
                             "`CopyForDeref` should only be used for dereferenceable types",
diff --git a/compiler/rustc_data_structures/src/graph/dominators/mod.rs b/compiler/rustc_data_structures/src/graph/dominators/mod.rs
index 0a21a4249c8..0df9dc112ee 100644
--- a/compiler/rustc_data_structures/src/graph/dominators/mod.rs
+++ b/compiler/rustc_data_structures/src/graph/dominators/mod.rs
@@ -10,7 +10,7 @@
 //! <https://www.cs.princeton.edu/courses/archive/spr03/cs423/download/dominators.pdf>
 
 use super::ControlFlowGraph;
-use rustc_index::vec::{Idx, IndexVec};
+use rustc_index::vec::{Idx, IndexSlice, IndexVec};
 use std::cmp::Ordering;
 
 #[cfg(test)]
@@ -256,10 +256,10 @@ pub fn dominators<G: ControlFlowGraph>(graph: G) -> Dominators<G::Node> {
 /// where `+>` is a proper ancestor and `*>` is just an ancestor.
 #[inline]
 fn eval(
-    ancestor: &mut IndexVec<PreorderIndex, PreorderIndex>,
+    ancestor: &mut IndexSlice<PreorderIndex, PreorderIndex>,
     lastlinked: Option<PreorderIndex>,
-    semi: &IndexVec<PreorderIndex, PreorderIndex>,
-    label: &mut IndexVec<PreorderIndex, PreorderIndex>,
+    semi: &IndexSlice<PreorderIndex, PreorderIndex>,
+    label: &mut IndexSlice<PreorderIndex, PreorderIndex>,
     node: PreorderIndex,
 ) -> PreorderIndex {
     if is_processed(node, lastlinked) {
@@ -277,10 +277,10 @@ fn is_processed(v: PreorderIndex, lastlinked: Option<PreorderIndex>) -> bool {
 
 #[inline]
 fn compress(
-    ancestor: &mut IndexVec<PreorderIndex, PreorderIndex>,
+    ancestor: &mut IndexSlice<PreorderIndex, PreorderIndex>,
     lastlinked: Option<PreorderIndex>,
-    semi: &IndexVec<PreorderIndex, PreorderIndex>,
-    label: &mut IndexVec<PreorderIndex, PreorderIndex>,
+    semi: &IndexSlice<PreorderIndex, PreorderIndex>,
+    label: &mut IndexSlice<PreorderIndex, PreorderIndex>,
     v: PreorderIndex,
 ) {
     assert!(is_processed(v, lastlinked));
diff --git a/compiler/rustc_data_structures/src/graph/iterate/mod.rs b/compiler/rustc_data_structures/src/graph/iterate/mod.rs
index 8a9af300c06..01a83b40a75 100644
--- a/compiler/rustc_data_structures/src/graph/iterate/mod.rs
+++ b/compiler/rustc_data_structures/src/graph/iterate/mod.rs
@@ -1,6 +1,6 @@
 use super::{DirectedGraph, WithNumNodes, WithStartNode, WithSuccessors};
 use rustc_index::bit_set::BitSet;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::{IndexSlice, IndexVec};
 use std::ops::ControlFlow;
 
 #[cfg(test)]
@@ -31,7 +31,7 @@ fn post_order_walk<G: DirectedGraph + WithSuccessors + WithNumNodes>(
     graph: &G,
     node: G::Node,
     result: &mut Vec<G::Node>,
-    visited: &mut IndexVec<G::Node, bool>,
+    visited: &mut IndexSlice<G::Node, bool>,
 ) {
     struct PostOrderFrame<Node, Iter> {
         node: Node,
diff --git a/compiler/rustc_data_structures/src/graph/scc/mod.rs b/compiler/rustc_data_structures/src/graph/scc/mod.rs
index c4b11951ab7..28c357e54dd 100644
--- a/compiler/rustc_data_structures/src/graph/scc/mod.rs
+++ b/compiler/rustc_data_structures/src/graph/scc/mod.rs
@@ -8,7 +8,7 @@
 use crate::fx::FxHashSet;
 use crate::graph::vec_graph::VecGraph;
 use crate::graph::{DirectedGraph, GraphSuccessors, WithNumEdges, WithNumNodes, WithSuccessors};
-use rustc_index::vec::{Idx, IndexVec};
+use rustc_index::vec::{Idx, IndexSlice, IndexVec};
 use std::ops::Range;
 
 #[cfg(test)]
@@ -43,7 +43,7 @@ impl<N: Idx, S: Idx + Ord> Sccs<N, S> {
         SccsConstruction::construct(graph)
     }
 
-    pub fn scc_indices(&self) -> &IndexVec<N, S> {
+    pub fn scc_indices(&self) -> &IndexSlice<N, S> {
         &self.scc_indices
     }
 
@@ -123,7 +123,7 @@ impl<S: Idx> SccData<S> {
         self.ranges.len()
     }
 
-    pub fn ranges(&self) -> &IndexVec<S, Range<usize>> {
+    pub fn ranges(&self) -> &IndexSlice<S, Range<usize>> {
         &self.ranges
     }
 
diff --git a/compiler/rustc_errors/src/emitter.rs b/compiler/rustc_errors/src/emitter.rs
index d6fd057c5a4..4b1ff0e1df9 100644
--- a/compiler/rustc_errors/src/emitter.rs
+++ b/compiler/rustc_errors/src/emitter.rs
@@ -2235,7 +2235,7 @@ impl EmitterWriter {
             }
         } else if is_multiline {
             buffer.puts(*row_num, 0, &self.maybe_anonymized(line_num), Style::LineNumber);
-            match &highlight_parts[..] {
+            match &highlight_parts {
                 [SubstitutionHighlight { start: 0, end }] if *end == line_to_add.len() => {
                     buffer.puts(*row_num, max_line_num_len + 1, "+ ", Style::Addition);
                 }
diff --git a/compiler/rustc_expand/src/build.rs b/compiler/rustc_expand/src/build.rs
index 8a78c3296f9..264f30fb10a 100644
--- a/compiler/rustc_expand/src/build.rs
+++ b/compiler/rustc_expand/src/build.rs
@@ -36,7 +36,7 @@ impl<'a> ExtCtxt<'a> {
         );
         let args = if !args.is_empty() {
             let args = args.into_iter().map(ast::AngleBracketedArg::Arg).collect();
-            ast::AngleBracketedArgs { args, span }.into()
+            Some(ast::AngleBracketedArgs { args, span }.into())
         } else {
             None
         };
@@ -620,10 +620,15 @@ impl<'a> ExtCtxt<'a> {
         span: Span,
         name: Ident,
         ty: P<ast::Ty>,
-        mutbl: ast::Mutability,
+        mutability: ast::Mutability,
         expr: P<ast::Expr>,
     ) -> P<ast::Item> {
-        self.item(span, name, AttrVec::new(), ast::ItemKind::Static(ty, mutbl, Some(expr)))
+        self.item(
+            span,
+            name,
+            AttrVec::new(),
+            ast::ItemKind::Static(ast::StaticItem { ty, mutability, expr: Some(expr) }.into()),
+        )
     }
 
     pub fn item_const(
@@ -633,8 +638,13 @@ impl<'a> ExtCtxt<'a> {
         ty: P<ast::Ty>,
         expr: P<ast::Expr>,
     ) -> P<ast::Item> {
-        let def = ast::Defaultness::Final;
-        self.item(span, name, AttrVec::new(), ast::ItemKind::Const(def, ty, Some(expr)))
+        let defaultness = ast::Defaultness::Final;
+        self.item(
+            span,
+            name,
+            AttrVec::new(),
+            ast::ItemKind::Const(ast::ConstItem { defaultness, ty, expr: Some(expr) }.into()),
+        )
     }
 
     // Builds `#[name]`.
diff --git a/compiler/rustc_expand/src/proc_macro.rs b/compiler/rustc_expand/src/proc_macro.rs
index ddba1441719..26bc216f678 100644
--- a/compiler/rustc_expand/src/proc_macro.rs
+++ b/compiler/rustc_expand/src/proc_macro.rs
@@ -54,7 +54,7 @@ impl base::BangProcMacro for BangProcMacro {
     ) -> Result<TokenStream, ErrorGuaranteed> {
         let _timer =
             ecx.sess.prof.generic_activity_with_arg_recorder("expand_proc_macro", |recorder| {
-                recorder.record_arg_with_span(ecx.expansion_descr(), span);
+                recorder.record_arg_with_span(ecx.sess.source_map(), ecx.expansion_descr(), span);
             });
 
         let proc_macro_backtrace = ecx.ecfg.proc_macro_backtrace;
@@ -85,7 +85,7 @@ impl base::AttrProcMacro for AttrProcMacro {
     ) -> Result<TokenStream, ErrorGuaranteed> {
         let _timer =
             ecx.sess.prof.generic_activity_with_arg_recorder("expand_proc_macro", |recorder| {
-                recorder.record_arg_with_span(ecx.expansion_descr(), span);
+                recorder.record_arg_with_span(ecx.sess.source_map(), ecx.expansion_descr(), span);
             });
 
         let proc_macro_backtrace = ecx.ecfg.proc_macro_backtrace;
@@ -134,7 +134,11 @@ impl MultiItemModifier for DeriveProcMacro {
         let stream = {
             let _timer =
                 ecx.sess.prof.generic_activity_with_arg_recorder("expand_proc_macro", |recorder| {
-                    recorder.record_arg_with_span(ecx.expansion_descr(), span);
+                    recorder.record_arg_with_span(
+                        ecx.sess.source_map(),
+                        ecx.expansion_descr(),
+                        span,
+                    );
                 });
             let proc_macro_backtrace = ecx.ecfg.proc_macro_backtrace;
             let strategy = exec_strategy(ecx);
diff --git a/compiler/rustc_feature/src/active.rs b/compiler/rustc_feature/src/active.rs
index b7d280b8751..84114b27f41 100644
--- a/compiler/rustc_feature/src/active.rs
+++ b/compiler/rustc_feature/src/active.rs
@@ -225,7 +225,7 @@ declare_features! (
     (active, rustc_allow_const_fn_unstable, "1.49.0", Some(69399), None),
     /// Allows using compiler's own crates.
     (active, rustc_private, "1.0.0", Some(27812), None),
-    /// Allows using internal rustdoc features like `doc(primitive)` or `doc(keyword)`.
+    /// Allows using internal rustdoc features like `doc(keyword)`.
     (active, rustdoc_internals, "1.58.0", Some(90418), None),
     /// Allows using the `rustdoc::missing_doc_code_examples` lint
     (active, rustdoc_missing_doc_code_examples, "1.31.0", Some(101730), None),
@@ -495,6 +495,8 @@ declare_features! (
     (active, repr_simd, "1.4.0", Some(27731), None),
     /// Allows return-position `impl Trait` in traits.
     (incomplete, return_position_impl_trait_in_trait, "1.65.0", Some(91611), None),
+    /// Allows bounding the return type of AFIT/RPITIT.
+    (incomplete, return_type_notation, "CURRENT_RUSTC_VERSION", Some(109417), None),
     /// Allows `extern "rust-cold"`.
     (active, rust_cold_cc, "1.63.0", Some(97544), None),
     /// Allows the use of SIMD types in functions declared in `extern` blocks.
diff --git a/compiler/rustc_feature/src/builtin_attrs.rs b/compiler/rustc_feature/src/builtin_attrs.rs
index 493a9cd89e3..c77292fdd16 100644
--- a/compiler/rustc_feature/src/builtin_attrs.rs
+++ b/compiler/rustc_feature/src/builtin_attrs.rs
@@ -778,6 +778,10 @@ pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[
         definition of a trait, it's currently in experimental form and should be changed before \
         being exposed outside of the std"
     ),
+    rustc_attr!(
+        rustc_doc_primitive, Normal, template!(NameValueStr: "primitive name"), ErrorFollowing,
+        r#"`rustc_doc_primitive` is a rustc internal attribute"#,
+    ),
 
     // ==========================================================================
     // Internal attributes, Testing:
diff --git a/compiler/rustc_hir/src/hir.rs b/compiler/rustc_hir/src/hir.rs
index f4b46b9a131..35a72f868fb 100644
--- a/compiler/rustc_hir/src/hir.rs
+++ b/compiler/rustc_hir/src/hir.rs
@@ -328,7 +328,7 @@ pub struct GenericArgs<'hir> {
     /// Were arguments written in parenthesized form `Fn(T) -> U`?
     /// This is required mostly for pretty-printing and diagnostics,
     /// but also for changing lifetime elision rules to be "function-like".
-    pub parenthesized: bool,
+    pub parenthesized: GenericArgsParentheses,
     /// The span encompassing arguments and the surrounding brackets `<>` or `()`
     ///       Foo<A, B, AssocTy = D>           Fn(T, U, V) -> W
     ///          ^^^^^^^^^^^^^^^^^^^             ^^^^^^^^^
@@ -340,11 +340,16 @@ pub struct GenericArgs<'hir> {
 
 impl<'hir> GenericArgs<'hir> {
     pub const fn none() -> Self {
-        Self { args: &[], bindings: &[], parenthesized: false, span_ext: DUMMY_SP }
+        Self {
+            args: &[],
+            bindings: &[],
+            parenthesized: GenericArgsParentheses::No,
+            span_ext: DUMMY_SP,
+        }
     }
 
     pub fn inputs(&self) -> &[Ty<'hir>] {
-        if self.parenthesized {
+        if self.parenthesized == GenericArgsParentheses::ParenSugar {
             for arg in self.args {
                 match arg {
                     GenericArg::Lifetime(_) => {}
@@ -417,6 +422,17 @@ impl<'hir> GenericArgs<'hir> {
     }
 }
 
+#[derive(Copy, Clone, PartialEq, Eq, Encodable, Hash, Debug)]
+#[derive(HashStable_Generic)]
+pub enum GenericArgsParentheses {
+    No,
+    /// Bounds for `feature(return_type_notation)`, like `T: Trait<method(..): Send>`,
+    /// where the args are explicitly elided with `..`
+    ReturnTypeNotation,
+    /// parenthesized function-family traits, like `T: Fn(u32) -> i32`
+    ParenSugar,
+}
+
 /// A modifier on a bound, currently this is only used for `?Sized`, where the
 /// modifier is `Maybe`. Negative bounds should also be handled here.
 #[derive(Copy, Clone, PartialEq, Eq, Encodable, Hash, Debug)]
diff --git a/compiler/rustc_hir_analysis/messages.ftl b/compiler/rustc_hir_analysis/messages.ftl
index 0105cbf36de..a57f3987849 100644
--- a/compiler/rustc_hir_analysis/messages.ftl
+++ b/compiler/rustc_hir_analysis/messages.ftl
@@ -178,3 +178,14 @@ hir_analysis_invalid_union_field =
 
 hir_analysis_invalid_union_field_sugg =
     wrap the field type in `ManuallyDrop<...>`
+
+hir_analysis_return_type_notation_on_non_rpitit =
+    return type notation used on function that is not `async` and does not return `impl Trait`
+    .note = function returns `{$ty}`, which is not compatible with associated type return bounds
+    .label = this function must be `async` or return `impl Trait`
+
+hir_analysis_return_type_notation_equality_bound =
+    return type notation is not allowed to use type equality
+
+hir_analysis_return_type_notation_missing_method =
+    cannot find associated function `{$assoc_name}` in trait `{$trait_name}`
diff --git a/compiler/rustc_hir_analysis/src/astconv/errors.rs b/compiler/rustc_hir_analysis/src/astconv/errors.rs
index 156334fe785..113c3f08ab9 100644
--- a/compiler/rustc_hir_analysis/src/astconv/errors.rs
+++ b/compiler/rustc_hir_analysis/src/astconv/errors.rs
@@ -55,7 +55,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
 
         let trait_def = self.tcx().trait_def(trait_def_id);
         if !trait_def.paren_sugar {
-            if trait_segment.args().parenthesized {
+            if trait_segment.args().parenthesized == hir::GenericArgsParentheses::ParenSugar {
                 // For now, require that parenthetical notation be used only with `Fn()` etc.
                 let mut err = feature_err(
                     &self.tcx().sess.parse_sess,
@@ -71,7 +71,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
 
         let sess = self.tcx().sess;
 
-        if !trait_segment.args().parenthesized {
+        if trait_segment.args().parenthesized != hir::GenericArgsParentheses::ParenSugar {
             // For now, require that parenthetical notation be used only with `Fn()` etc.
             let mut err = feature_err(
                 &sess.parse_sess,
@@ -483,8 +483,8 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
                 [segment] if segment.args.is_none() => {
                     trait_bound_spans = vec![segment.ident.span];
                     associated_types = associated_types
-                        .into_iter()
-                        .map(|(_, items)| (segment.ident.span, items))
+                        .into_values()
+                        .map(|items| (segment.ident.span, items))
                         .collect();
                 }
                 _ => {}
@@ -607,11 +607,19 @@ pub fn prohibit_assoc_ty_binding(
     span: Span,
     segment: Option<(&hir::PathSegment<'_>, Span)>,
 ) {
-    tcx.sess.emit_err(AssocTypeBindingNotAllowed { span, fn_trait_expansion: if let Some((segment, span)) = segment && segment.args().parenthesized {
-        Some(ParenthesizedFnTraitExpansion { span, expanded_type: fn_trait_to_string(tcx, segment, false) })
-    } else {
-        None
-    }});
+    tcx.sess.emit_err(AssocTypeBindingNotAllowed {
+        span,
+        fn_trait_expansion: if let Some((segment, span)) = segment
+            && segment.args().parenthesized == hir::GenericArgsParentheses::ParenSugar
+        {
+            Some(ParenthesizedFnTraitExpansion {
+                span,
+                expanded_type: fn_trait_to_string(tcx, segment, false),
+            })
+        } else {
+            None
+        },
+    });
 }
 
 pub(crate) fn fn_trait_to_string(
diff --git a/compiler/rustc_hir_analysis/src/astconv/mod.rs b/compiler/rustc_hir_analysis/src/astconv/mod.rs
index 4ab6bb5908b..e25b07d9392 100644
--- a/compiler/rustc_hir_analysis/src/astconv/mod.rs
+++ b/compiler/rustc_hir_analysis/src/astconv/mod.rs
@@ -854,16 +854,15 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
         )
     }
 
-    fn trait_defines_associated_type_named(&self, trait_def_id: DefId, assoc_name: Ident) -> bool {
-        self.tcx()
-            .associated_items(trait_def_id)
-            .find_by_name_and_kind(self.tcx(), assoc_name, ty::AssocKind::Type, trait_def_id)
-            .is_some()
-    }
-    fn trait_defines_associated_const_named(&self, trait_def_id: DefId, assoc_name: Ident) -> bool {
+    fn trait_defines_associated_item_named(
+        &self,
+        trait_def_id: DefId,
+        assoc_kind: ty::AssocKind,
+        assoc_name: Ident,
+    ) -> bool {
         self.tcx()
             .associated_items(trait_def_id)
-            .find_by_name_and_kind(self.tcx(), assoc_name, ty::AssocKind::Const, trait_def_id)
+            .find_by_name_and_kind(self.tcx(), assoc_name, assoc_kind, trait_def_id)
             .is_some()
     }
 
@@ -1087,24 +1086,44 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
 
         let tcx = self.tcx();
 
-        let candidate =
-            if self.trait_defines_associated_type_named(trait_ref.def_id(), binding.item_name) {
-                // Simple case: X is defined in the current trait.
+        let return_type_notation =
+            binding.gen_args.parenthesized == hir::GenericArgsParentheses::ReturnTypeNotation;
+
+        let candidate = if return_type_notation {
+            if self.trait_defines_associated_item_named(
+                trait_ref.def_id(),
+                ty::AssocKind::Fn,
+                binding.item_name,
+            ) {
                 trait_ref
             } else {
-                // Otherwise, we have to walk through the supertraits to find
-                // those that do.
-                self.one_bound_for_assoc_type(
-                    || traits::supertraits(tcx, trait_ref),
-                    trait_ref.print_only_trait_path(),
-                    binding.item_name,
-                    path_span,
-                    match binding.kind {
-                        ConvertedBindingKind::Equality(term) => Some(term),
-                        _ => None,
-                    },
-                )?
-            };
+                return Err(tcx.sess.emit_err(crate::errors::ReturnTypeNotationMissingMethod {
+                    span: binding.span,
+                    trait_name: tcx.item_name(trait_ref.def_id()),
+                    assoc_name: binding.item_name.name,
+                }));
+            }
+        } else if self.trait_defines_associated_item_named(
+            trait_ref.def_id(),
+            ty::AssocKind::Type,
+            binding.item_name,
+        ) {
+            // Simple case: X is defined in the current trait.
+            trait_ref
+        } else {
+            // Otherwise, we have to walk through the supertraits to find
+            // those that do.
+            self.one_bound_for_assoc_type(
+                || traits::supertraits(tcx, trait_ref),
+                trait_ref.print_only_trait_path(),
+                binding.item_name,
+                path_span,
+                match binding.kind {
+                    ConvertedBindingKind::Equality(term) => Some(term),
+                    _ => None,
+                },
+            )?
+        };
 
         let (assoc_ident, def_scope) =
             tcx.adjust_ident_and_get_scope(binding.item_name, candidate.def_id(), hir_ref_id);
@@ -1116,9 +1135,13 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
                 .filter_by_name_unhygienic(assoc_ident.name)
                 .find(|i| i.kind == kind && i.ident(tcx).normalize_to_macros_2_0() == assoc_ident)
         };
-        let assoc_item = find_item_of_kind(ty::AssocKind::Type)
-            .or_else(|| find_item_of_kind(ty::AssocKind::Const))
-            .expect("missing associated type");
+        let assoc_item = if return_type_notation {
+            find_item_of_kind(ty::AssocKind::Fn)
+        } else {
+            find_item_of_kind(ty::AssocKind::Type)
+                .or_else(|| find_item_of_kind(ty::AssocKind::Const))
+        }
+        .expect("missing associated type");
 
         if !assoc_item.visibility(tcx).is_accessible_from(def_scope, tcx) {
             tcx.sess
@@ -1135,7 +1158,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
             dup_bindings
                 .entry(assoc_item.def_id)
                 .and_modify(|prev_span| {
-                    self.tcx().sess.emit_err(ValueOfAssociatedStructAlreadySpecified {
+                    tcx.sess.emit_err(ValueOfAssociatedStructAlreadySpecified {
                         span: binding.span,
                         prev_span: *prev_span,
                         item_name: binding.item_name,
@@ -1145,28 +1168,100 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
                 .or_insert(binding.span);
         }
 
-        // Include substitutions for generic parameters of associated types
-        let projection_ty = candidate.map_bound(|trait_ref| {
-            let ident = Ident::new(assoc_item.name, binding.item_name.span);
-            let item_segment = hir::PathSegment {
-                ident,
-                hir_id: binding.hir_id,
-                res: Res::Err,
-                args: Some(binding.gen_args),
-                infer_args: false,
+        let projection_ty = if return_type_notation {
+            // If we have an method return type bound, then we need to substitute
+            // the method's early bound params with suitable late-bound params.
+            let mut num_bound_vars = candidate.bound_vars().len();
+            let substs =
+                candidate.skip_binder().substs.extend_to(tcx, assoc_item.def_id, |param, _| {
+                    let subst = match param.kind {
+                        GenericParamDefKind::Lifetime => tcx
+                            .mk_re_late_bound(
+                                ty::INNERMOST,
+                                ty::BoundRegion {
+                                    var: ty::BoundVar::from_usize(num_bound_vars),
+                                    kind: ty::BoundRegionKind::BrNamed(param.def_id, param.name),
+                                },
+                            )
+                            .into(),
+                        GenericParamDefKind::Type { .. } => tcx
+                            .mk_bound(
+                                ty::INNERMOST,
+                                ty::BoundTy {
+                                    var: ty::BoundVar::from_usize(num_bound_vars),
+                                    kind: ty::BoundTyKind::Param(param.def_id, param.name),
+                                },
+                            )
+                            .into(),
+                        GenericParamDefKind::Const { .. } => {
+                            let ty = tcx
+                                .type_of(param.def_id)
+                                .no_bound_vars()
+                                .expect("ct params cannot have early bound vars");
+                            tcx.mk_const(
+                                ty::ConstKind::Bound(
+                                    ty::INNERMOST,
+                                    ty::BoundVar::from_usize(num_bound_vars),
+                                ),
+                                ty,
+                            )
+                            .into()
+                        }
+                    };
+                    num_bound_vars += 1;
+                    subst
+                });
+
+            // Next, we need to check that the return-type notation is being used on
+            // an RPITIT (return-position impl trait in trait) or AFIT (async fn in trait).
+            let output = tcx.fn_sig(assoc_item.def_id).skip_binder().output();
+            let output = if let ty::Alias(ty::Projection, alias_ty) = *output.skip_binder().kind()
+                && tcx.def_kind(alias_ty.def_id) == DefKind::ImplTraitPlaceholder
+            {
+                alias_ty
+            } else {
+                return Err(self.tcx().sess.emit_err(
+                    crate::errors::ReturnTypeNotationOnNonRpitit {
+                        span: binding.span,
+                        ty: tcx.liberate_late_bound_regions(assoc_item.def_id, output),
+                        fn_span: tcx.hir().span_if_local(assoc_item.def_id),
+                        note: (),
+                    },
+                ));
             };
 
-            let substs_trait_ref_and_assoc_item = self.create_substs_for_associated_item(
-                path_span,
-                assoc_item.def_id,
-                &item_segment,
-                trait_ref.substs,
-            );
+            // Finally, move the fn return type's bound vars over to account for the early bound
+            // params (and trait ref's late bound params). This logic is very similar to
+            // `Predicate::subst_supertrait`, and it's no coincidence why.
+            let shifted_output = tcx.shift_bound_var_indices(num_bound_vars, output);
+            let subst_output = ty::EarlyBinder(shifted_output).subst(tcx, substs);
+
+            let bound_vars = tcx.late_bound_vars(binding.hir_id);
+            ty::Binder::bind_with_vars(subst_output, bound_vars)
+        } else {
+            // Include substitutions for generic parameters of associated types
+            candidate.map_bound(|trait_ref| {
+                let ident = Ident::new(assoc_item.name, binding.item_name.span);
+                let item_segment = hir::PathSegment {
+                    ident,
+                    hir_id: binding.hir_id,
+                    res: Res::Err,
+                    args: Some(binding.gen_args),
+                    infer_args: false,
+                };
 
-            debug!(?substs_trait_ref_and_assoc_item);
+                let substs_trait_ref_and_assoc_item = self.create_substs_for_associated_item(
+                    path_span,
+                    assoc_item.def_id,
+                    &item_segment,
+                    trait_ref.substs,
+                );
 
-            self.tcx().mk_alias_ty(assoc_item.def_id, substs_trait_ref_and_assoc_item)
-        });
+                debug!(?substs_trait_ref_and_assoc_item);
+
+                tcx.mk_alias_ty(assoc_item.def_id, substs_trait_ref_and_assoc_item)
+            })
+        };
 
         if !speculative {
             // Find any late-bound regions declared in `ty` that are not
@@ -1206,6 +1301,11 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
         }
 
         match binding.kind {
+            ConvertedBindingKind::Equality(..) if return_type_notation => {
+                return Err(self.tcx().sess.emit_err(
+                    crate::errors::ReturnTypeNotationEqualityBound { span: binding.span },
+                ));
+            }
             ConvertedBindingKind::Equality(mut term) => {
                 // "Desugar" a constraint like `T: Iterator<Item = u32>` this to
                 // the "projection predicate" for:
@@ -1267,7 +1367,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
                 // Calling `skip_binder` is okay, because `add_bounds` expects the `param_ty`
                 // parameter to have a skipped binder.
                 let param_ty = tcx.mk_alias(ty::Projection, projection_ty.skip_binder());
-                self.add_bounds(param_ty, ast_bounds.iter(), bounds, candidate.bound_vars());
+                self.add_bounds(param_ty, ast_bounds.iter(), bounds, projection_ty.bound_vars());
             }
         }
         Ok(())
@@ -1808,10 +1908,12 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
     where
         I: Iterator<Item = ty::PolyTraitRef<'tcx>>,
     {
-        let mut matching_candidates = all_candidates()
-            .filter(|r| self.trait_defines_associated_type_named(r.def_id(), assoc_name));
-        let mut const_candidates = all_candidates()
-            .filter(|r| self.trait_defines_associated_const_named(r.def_id(), assoc_name));
+        let mut matching_candidates = all_candidates().filter(|r| {
+            self.trait_defines_associated_item_named(r.def_id(), ty::AssocKind::Type, assoc_name)
+        });
+        let mut const_candidates = all_candidates().filter(|r| {
+            self.trait_defines_associated_item_named(r.def_id(), ty::AssocKind::Const, assoc_name)
+        });
 
         let (bound, next_cand) = match (matching_candidates.next(), const_candidates.next()) {
             (Some(bound), _) => (bound, matching_candidates.next()),
diff --git a/compiler/rustc_hir_analysis/src/check/dropck.rs b/compiler/rustc_hir_analysis/src/check/dropck.rs
index 2bb724138f5..111bf5e5455 100644
--- a/compiler/rustc_hir_analysis/src/check/dropck.rs
+++ b/compiler/rustc_hir_analysis/src/check/dropck.rs
@@ -253,10 +253,6 @@ impl<'tcx> TypeRelation<'tcx> for SimpleEqRelation<'tcx> {
         self.tcx
     }
 
-    fn intercrate(&self) -> bool {
-        false
-    }
-
     fn param_env(&self) -> ty::ParamEnv<'tcx> {
         self.param_env
     }
@@ -269,10 +265,6 @@ impl<'tcx> TypeRelation<'tcx> for SimpleEqRelation<'tcx> {
         true
     }
 
-    fn mark_ambiguous(&mut self) {
-        bug!()
-    }
-
     fn relate_with_variance<T: Relate<'tcx>>(
         &mut self,
         _: ty::Variance,
diff --git a/compiler/rustc_hir_analysis/src/collect/resolve_bound_vars.rs b/compiler/rustc_hir_analysis/src/collect/resolve_bound_vars.rs
index f1769415797..5e4f377a1e7 100644
--- a/compiler/rustc_hir_analysis/src/collect/resolve_bound_vars.rs
+++ b/compiler/rustc_hir_analysis/src/collect/resolve_bound_vars.rs
@@ -1461,7 +1461,7 @@ impl<'a, 'tcx> BoundVarContext<'a, 'tcx> {
         depth: usize,
         generic_args: &'tcx hir::GenericArgs<'tcx>,
     ) {
-        if generic_args.parenthesized {
+        if generic_args.parenthesized == hir::GenericArgsParentheses::ParenSugar {
             self.visit_fn_like_elision(
                 generic_args.inputs(),
                 Some(generic_args.bindings[0].ty()),
@@ -1640,7 +1640,59 @@ impl<'a, 'tcx> BoundVarContext<'a, 'tcx> {
                 },
                 s: self.scope,
             };
-            if let Some(type_def_id) = type_def_id {
+            // If the binding is parenthesized, then this must be `feature(return_type_notation)`.
+            // In that case, introduce a binder over all of the function's early and late bound vars.
+            //
+            // For example, given
+            // ```
+            // trait Foo {
+            //     async fn x<'r, T>();
+            // }
+            // ```
+            // and a bound that looks like:
+            //    `for<'a> T::Trait<'a, x(): for<'b> Other<'b>>`
+            // this is going to expand to something like:
+            //    `for<'a> for<'r, T> <T as Trait<'a>>::x::<'r, T>::{opaque#0}: for<'b> Other<'b>`.
+            if binding.gen_args.parenthesized == hir::GenericArgsParentheses::ReturnTypeNotation {
+                let bound_vars = if let Some(type_def_id) = type_def_id
+                    && self.tcx.def_kind(type_def_id) == DefKind::Trait
+                    // FIXME(return_type_notation): We could bound supertrait methods.
+                    && let Some(assoc_fn) = self
+                        .tcx
+                        .associated_items(type_def_id)
+                        .find_by_name_and_kind(self.tcx, binding.ident, ty::AssocKind::Fn, type_def_id)
+                {
+                    self.tcx
+                        .generics_of(assoc_fn.def_id)
+                        .params
+                        .iter()
+                        .map(|param| match param.kind {
+                            ty::GenericParamDefKind::Lifetime => ty::BoundVariableKind::Region(
+                                ty::BoundRegionKind::BrNamed(param.def_id, param.name),
+                            ),
+                            ty::GenericParamDefKind::Type { .. } => ty::BoundVariableKind::Ty(
+                                ty::BoundTyKind::Param(param.def_id, param.name),
+                            ),
+                            ty::GenericParamDefKind::Const { .. } => ty::BoundVariableKind::Const,
+                        })
+                        .chain(self.tcx.fn_sig(assoc_fn.def_id).subst_identity().bound_vars())
+                        .collect()
+                } else {
+                    self.tcx.sess.delay_span_bug(
+                        binding.ident.span,
+                        "bad return type notation here",
+                    );
+                    vec![]
+                };
+                self.with(scope, |this| {
+                    let scope = Scope::Supertrait { bound_vars, s: this.scope };
+                    this.with(scope, |this| {
+                        let (bound_vars, _) = this.poly_trait_ref_binder_info();
+                        this.record_late_bound_vars(binding.hir_id, bound_vars);
+                        this.visit_assoc_type_binding(binding)
+                    });
+                });
+            } else if let Some(type_def_id) = type_def_id {
                 let bound_vars =
                     BoundVarContext::supertrait_hrtb_vars(self.tcx, type_def_id, binding.ident);
                 self.with(scope, |this| {
diff --git a/compiler/rustc_hir_analysis/src/errors.rs b/compiler/rustc_hir_analysis/src/errors.rs
index f57197edeb7..c71ce9a0bc7 100644
--- a/compiler/rustc_hir_analysis/src/errors.rs
+++ b/compiler/rustc_hir_analysis/src/errors.rs
@@ -471,6 +471,18 @@ pub(crate) struct InvalidUnionField {
     pub note: (),
 }
 
+#[derive(Diagnostic)]
+#[diag(hir_analysis_return_type_notation_on_non_rpitit)]
+pub(crate) struct ReturnTypeNotationOnNonRpitit<'tcx> {
+    #[primary_span]
+    pub span: Span,
+    pub ty: Ty<'tcx>,
+    #[label]
+    pub fn_span: Option<Span>,
+    #[note]
+    pub note: (),
+}
+
 #[derive(Subdiagnostic)]
 #[multipart_suggestion(hir_analysis_invalid_union_field_sugg, applicability = "machine-applicable")]
 pub(crate) struct InvalidUnionFieldSuggestion {
@@ -479,3 +491,19 @@ pub(crate) struct InvalidUnionFieldSuggestion {
     #[suggestion_part(code = ">")]
     pub hi: Span,
 }
+
+#[derive(Diagnostic)]
+#[diag(hir_analysis_return_type_notation_equality_bound)]
+pub(crate) struct ReturnTypeNotationEqualityBound {
+    #[primary_span]
+    pub span: Span,
+}
+
+#[derive(Diagnostic)]
+#[diag(hir_analysis_return_type_notation_missing_method)]
+pub(crate) struct ReturnTypeNotationMissingMethod {
+    #[primary_span]
+    pub span: Span,
+    pub trait_name: Symbol,
+    pub assoc_name: Symbol,
+}
diff --git a/compiler/rustc_hir_analysis/src/structured_errors/wrong_number_of_generic_args.rs b/compiler/rustc_hir_analysis/src/structured_errors/wrong_number_of_generic_args.rs
index cae884ae8fb..8f4d81ec3a9 100644
--- a/compiler/rustc_hir_analysis/src/structured_errors/wrong_number_of_generic_args.rs
+++ b/compiler/rustc_hir_analysis/src/structured_errors/wrong_number_of_generic_args.rs
@@ -565,7 +565,7 @@ impl<'a, 'tcx> WrongNumberOfGenericArgs<'a, 'tcx> {
     /// type Map = HashMap<String>;
     /// ```
     fn suggest_adding_args(&self, err: &mut Diagnostic) {
-        if self.gen_args.parenthesized {
+        if self.gen_args.parenthesized != hir::GenericArgsParentheses::No {
             return;
         }
 
@@ -962,7 +962,11 @@ impl<'a, 'tcx> WrongNumberOfGenericArgs<'a, 'tcx> {
 
             let msg = format!(
                 "remove these {}generics",
-                if self.gen_args.parenthesized { "parenthetical " } else { "" },
+                if self.gen_args.parenthesized == hir::GenericArgsParentheses::ParenSugar {
+                    "parenthetical "
+                } else {
+                    ""
+                },
             );
 
             err.span_suggestion(span, &msg, "", Applicability::MaybeIncorrect);
diff --git a/compiler/rustc_hir_pretty/src/lib.rs b/compiler/rustc_hir_pretty/src/lib.rs
index 63ea6c90477..4f27c01fad2 100644
--- a/compiler/rustc_hir_pretty/src/lib.rs
+++ b/compiler/rustc_hir_pretty/src/lib.rs
@@ -1652,61 +1652,65 @@ impl<'a> State<'a> {
         generic_args: &hir::GenericArgs<'_>,
         colons_before_params: bool,
     ) {
-        if generic_args.parenthesized {
-            self.word("(");
-            self.commasep(Inconsistent, generic_args.inputs(), |s, ty| s.print_type(ty));
-            self.word(")");
+        match generic_args.parenthesized {
+            hir::GenericArgsParentheses::No => {
+                let start = if colons_before_params { "::<" } else { "<" };
+                let empty = Cell::new(true);
+                let start_or_comma = |this: &mut Self| {
+                    if empty.get() {
+                        empty.set(false);
+                        this.word(start)
+                    } else {
+                        this.word_space(",")
+                    }
+                };
+
+                let mut nonelided_generic_args: bool = false;
+                let elide_lifetimes = generic_args.args.iter().all(|arg| match arg {
+                    GenericArg::Lifetime(lt) if lt.is_elided() => true,
+                    GenericArg::Lifetime(_) => {
+                        nonelided_generic_args = true;
+                        false
+                    }
+                    _ => {
+                        nonelided_generic_args = true;
+                        true
+                    }
+                });
 
-            self.space_if_not_bol();
-            self.word_space("->");
-            self.print_type(generic_args.bindings[0].ty());
-        } else {
-            let start = if colons_before_params { "::<" } else { "<" };
-            let empty = Cell::new(true);
-            let start_or_comma = |this: &mut Self| {
-                if empty.get() {
-                    empty.set(false);
-                    this.word(start)
-                } else {
-                    this.word_space(",")
+                if nonelided_generic_args {
+                    start_or_comma(self);
+                    self.commasep(Inconsistent, generic_args.args, |s, generic_arg| {
+                        match generic_arg {
+                            GenericArg::Lifetime(lt) if !elide_lifetimes => s.print_lifetime(lt),
+                            GenericArg::Lifetime(_) => {}
+                            GenericArg::Type(ty) => s.print_type(ty),
+                            GenericArg::Const(ct) => s.print_anon_const(&ct.value),
+                            GenericArg::Infer(_inf) => s.word("_"),
+                        }
+                    });
                 }
-            };
 
-            let mut nonelided_generic_args: bool = false;
-            let elide_lifetimes = generic_args.args.iter().all(|arg| match arg {
-                GenericArg::Lifetime(lt) if lt.is_elided() => true,
-                GenericArg::Lifetime(_) => {
-                    nonelided_generic_args = true;
-                    false
+                for binding in generic_args.bindings {
+                    start_or_comma(self);
+                    self.print_type_binding(binding);
                 }
-                _ => {
-                    nonelided_generic_args = true;
-                    true
-                }
-            });
-
-            if nonelided_generic_args {
-                start_or_comma(self);
-                self.commasep(
-                    Inconsistent,
-                    generic_args.args,
-                    |s, generic_arg| match generic_arg {
-                        GenericArg::Lifetime(lt) if !elide_lifetimes => s.print_lifetime(lt),
-                        GenericArg::Lifetime(_) => {}
-                        GenericArg::Type(ty) => s.print_type(ty),
-                        GenericArg::Const(ct) => s.print_anon_const(&ct.value),
-                        GenericArg::Infer(_inf) => s.word("_"),
-                    },
-                );
-            }
 
-            for binding in generic_args.bindings {
-                start_or_comma(self);
-                self.print_type_binding(binding);
+                if !empty.get() {
+                    self.word(">")
+                }
             }
+            hir::GenericArgsParentheses::ParenSugar => {
+                self.word("(");
+                self.commasep(Inconsistent, generic_args.inputs(), |s, ty| s.print_type(ty));
+                self.word(")");
 
-            if !empty.get() {
-                self.word(">")
+                self.space_if_not_bol();
+                self.word_space("->");
+                self.print_type(generic_args.bindings[0].ty());
+            }
+            hir::GenericArgsParentheses::ReturnTypeNotation => {
+                self.word("(..)");
             }
         }
     }
diff --git a/compiler/rustc_hir_typeck/src/expr_use_visitor.rs b/compiler/rustc_hir_typeck/src/expr_use_visitor.rs
index 58902cd292c..ee1c6fbfd65 100644
--- a/compiler/rustc_hir_typeck/src/expr_use_visitor.rs
+++ b/compiler/rustc_hir_typeck/src/expr_use_visitor.rs
@@ -559,7 +559,7 @@ impl<'a, 'tcx> ExprUseVisitor<'a, 'tcx> {
                 // struct; however, when EUV is run during typeck, it
                 // may not. This will generate an error earlier in typeck,
                 // so we can just ignore it.
-                if !self.tcx().sess.has_errors().is_some() {
+                if self.tcx().sess.has_errors().is_none() {
                     span_bug!(with_expr.span, "with expression doesn't evaluate to a struct");
                 }
             }
diff --git a/compiler/rustc_hir_typeck/src/upvar.rs b/compiler/rustc_hir_typeck/src/upvar.rs
index 504da7dc090..41a6ad80b65 100644
--- a/compiler/rustc_hir_typeck/src/upvar.rs
+++ b/compiler/rustc_hir_typeck/src/upvar.rs
@@ -1893,14 +1893,13 @@ fn restrict_capture_precision(
 
     for (i, proj) in place.projections.iter().enumerate() {
         match proj.kind {
-            ProjectionKind::Index => {
-                // Arrays are completely captured, so we drop Index projections
+            ProjectionKind::Index | ProjectionKind::Subslice => {
+                // Arrays are completely captured, so we drop Index and Subslice projections
                 truncate_place_to_len_and_update_capture_kind(&mut place, &mut curr_mode, i);
                 return (place, curr_mode);
             }
             ProjectionKind::Deref => {}
             ProjectionKind::Field(..) => {} // ignore
-            ProjectionKind::Subslice => {}  // We never capture this
         }
     }
 
diff --git a/compiler/rustc_index/src/vec.rs b/compiler/rustc_index/src/vec.rs
index 596849bd456..16cf9ae5cfc 100644
--- a/compiler/rustc_index/src/vec.rs
+++ b/compiler/rustc_index/src/vec.rs
@@ -1,6 +1,7 @@
 #[cfg(feature = "rustc_serialize")]
 use rustc_serialize::{Decodable, Decoder, Encodable, Encoder};
 
+use std::borrow::{Borrow, BorrowMut};
 use std::fmt;
 use std::fmt::Debug;
 use std::hash::Hash;
@@ -51,6 +52,12 @@ impl Idx for u32 {
     }
 }
 
+/// An owned contiguous collection of `T`s, indexed by `I` rather than by `usize`.
+///
+/// While it's possible to use `u32` or `usize` directly for `I`,
+/// you almost certainly want to use a [`newtype_index!`]-generated type instead.
+///
+/// [`newtype_index!`]: ../macro.newtype_index.html
 #[derive(Clone, PartialEq, Eq, Hash)]
 #[repr(transparent)]
 pub struct IndexVec<I: Idx, T> {
@@ -58,6 +65,13 @@ pub struct IndexVec<I: Idx, T> {
     _marker: PhantomData<fn(&I)>,
 }
 
+/// A view into contiguous `T`s, indexed by `I` rather than by `usize`.
+///
+/// One common pattern you'll see is code that uses [`IndexVec::from_elem`]
+/// to create the storage needed for a particular "universe" (aka the set of all
+/// the possible keys that need an associated value) then passes that working
+/// area as `&mut IndexSlice<I, T>` to clarify that nothing will be added nor
+/// removed during processing (and, as a bonus, to chase fewer pointers).
 #[derive(PartialEq, Eq, Hash)]
 #[repr(transparent)]
 pub struct IndexSlice<I: Idx, T> {
@@ -93,6 +107,12 @@ impl<I: Idx, T: fmt::Debug> fmt::Debug for IndexVec<I, T> {
     }
 }
 
+impl<I: Idx, T: fmt::Debug> fmt::Debug for IndexSlice<I, T> {
+    fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
+        fmt::Debug::fmt(&self.raw, fmt)
+    }
+}
+
 impl<I: Idx, T> IndexVec<I, T> {
     #[inline]
     pub fn new() -> Self {
@@ -109,8 +129,19 @@ impl<I: Idx, T> IndexVec<I, T> {
         IndexVec { raw: Vec::with_capacity(capacity), _marker: PhantomData }
     }
 
+    /// Creates a new vector with a copy of `elem` for each index in `universe`.
+    ///
+    /// Thus `IndexVec::from_elem(elem, &universe)` is equivalent to
+    /// `IndexVec::<I, _>::from_elem_n(elem, universe.len())`. That can help
+    /// type inference as it ensures that the resulting vector uses the same
+    /// index type as `universe`, rather than something potentially surprising.
+    ///
+    /// For example, if you want to store data for each local in a MIR body,
+    /// using `let mut uses = IndexVec::from_elem(vec![], &body.local_decls);`
+    /// ensures that `uses` is an `IndexVec<Local, _>`, and thus can give
+    /// better error messages later if one accidentally mismatches indices.
     #[inline]
-    pub fn from_elem<S>(elem: T, universe: &IndexVec<I, S>) -> Self
+    pub fn from_elem<S>(elem: T, universe: &IndexSlice<I, S>) -> Self
     where
         T: Clone,
     {
@@ -238,6 +269,30 @@ impl<I: Idx, T> DerefMut for IndexVec<I, T> {
     }
 }
 
+impl<I: Idx, T> Borrow<IndexSlice<I, T>> for IndexVec<I, T> {
+    fn borrow(&self) -> &IndexSlice<I, T> {
+        self
+    }
+}
+
+impl<I: Idx, T> BorrowMut<IndexSlice<I, T>> for IndexVec<I, T> {
+    fn borrow_mut(&mut self) -> &mut IndexSlice<I, T> {
+        self
+    }
+}
+
+impl<I: Idx, T: Clone> ToOwned for IndexSlice<I, T> {
+    type Owned = IndexVec<I, T>;
+
+    fn to_owned(&self) -> IndexVec<I, T> {
+        IndexVec::from_raw(self.raw.to_owned())
+    }
+
+    fn clone_into(&self, target: &mut IndexVec<I, T>) {
+        self.raw.clone_into(&mut target.raw)
+    }
+}
+
 impl<I: Idx, T> IndexSlice<I, T> {
     #[inline]
     pub fn from_raw(raw: &[T]) -> &Self {
@@ -382,7 +437,7 @@ impl<I: Idx, T: Clone> IndexVec<I, T> {
     }
 }
 
-impl<I: Idx, T: Ord> IndexVec<I, T> {
+impl<I: Idx, T: Ord> IndexSlice<I, T> {
     #[inline]
     pub fn binary_search(&self, value: &T) -> Result<I, I> {
         match self.raw.binary_search(value) {
diff --git a/compiler/rustc_infer/src/infer/canonical/canonicalizer.rs b/compiler/rustc_infer/src/infer/canonical/canonicalizer.rs
index 96a5f6532fe..3bbd01f8273 100644
--- a/compiler/rustc_infer/src/infer/canonical/canonicalizer.rs
+++ b/compiler/rustc_infer/src/infer/canonical/canonicalizer.rs
@@ -230,9 +230,9 @@ impl CanonicalizeMode for CanonicalizeUserTypeAnnotation {
         r: ty::Region<'tcx>,
     ) -> ty::Region<'tcx> {
         match *r {
-            ty::ReEarlyBound(_) | ty::ReFree(_) | ty::ReErased | ty::ReStatic => r,
+            ty::ReEarlyBound(_) | ty::ReFree(_) | ty::ReErased | ty::ReStatic | ty::ReError(_) => r,
             ty::ReVar(_) => canonicalizer.canonical_var_for_region_in_root_universe(r),
-            _ => {
+            ty::RePlaceholder(..) | ty::ReLateBound(..) => {
                 // We only expect region names that the user can type.
                 bug!("unexpected region in query response: `{:?}`", r)
             }
diff --git a/compiler/rustc_infer/src/infer/combine.rs b/compiler/rustc_infer/src/infer/combine.rs
index 88a28e26005..fe45b5ebe61 100644
--- a/compiler/rustc_infer/src/infer/combine.rs
+++ b/compiler/rustc_infer/src/infer/combine.rs
@@ -137,6 +137,18 @@ impl<'tcx> InferCtxt<'tcx> {
                 Err(TypeError::Sorts(ty::relate::expected_found(relation, a, b)))
             }
 
+            // During coherence, opaque types should be treated as *possibly*
+            // equal to each other, even if their generic params differ, as
+            // they could resolve to the same hidden type, even for different
+            // generic params.
+            (
+                &ty::Alias(ty::Opaque, ty::AliasTy { def_id: a_def_id, .. }),
+                &ty::Alias(ty::Opaque, ty::AliasTy { def_id: b_def_id, .. }),
+            ) if self.intercrate && a_def_id == b_def_id => {
+                relation.register_predicates([ty::Binder::dummy(ty::PredicateKind::Ambiguous)]);
+                Ok(a)
+            }
+
             _ => ty::relate::super_relate_tys(relation, a, b),
         }
     }
@@ -505,10 +517,6 @@ impl<'infcx, 'tcx> CombineFields<'infcx, 'tcx> {
             Obligation::new(self.infcx.tcx, self.trace.cause.clone(), self.param_env, to_pred)
         }))
     }
-
-    pub fn mark_ambiguous(&mut self) {
-        self.register_predicates([ty::Binder::dummy(ty::PredicateKind::Ambiguous)]);
-    }
 }
 
 struct Generalizer<'cx, 'tcx> {
@@ -581,10 +589,6 @@ impl<'tcx> TypeRelation<'tcx> for Generalizer<'_, 'tcx> {
         self.infcx.tcx
     }
 
-    fn intercrate(&self) -> bool {
-        self.infcx.intercrate
-    }
-
     fn param_env(&self) -> ty::ParamEnv<'tcx> {
         self.param_env
     }
@@ -597,10 +601,6 @@ impl<'tcx> TypeRelation<'tcx> for Generalizer<'_, 'tcx> {
         true
     }
 
-    fn mark_ambiguous(&mut self) {
-        span_bug!(self.cause.span, "opaque types are handled in `tys`");
-    }
-
     fn binders<T>(
         &mut self,
         a: ty::Binder<'tcx, T>,
diff --git a/compiler/rustc_infer/src/infer/equate.rs b/compiler/rustc_infer/src/infer/equate.rs
index 38002357cde..fe4a2dd3800 100644
--- a/compiler/rustc_infer/src/infer/equate.rs
+++ b/compiler/rustc_infer/src/infer/equate.rs
@@ -35,10 +35,6 @@ impl<'tcx> TypeRelation<'tcx> for Equate<'_, '_, 'tcx> {
         self.fields.tcx()
     }
 
-    fn intercrate(&self) -> bool {
-        self.fields.infcx.intercrate
-    }
-
     fn param_env(&self) -> ty::ParamEnv<'tcx> {
         self.fields.param_env
     }
@@ -47,10 +43,6 @@ impl<'tcx> TypeRelation<'tcx> for Equate<'_, '_, 'tcx> {
         self.a_is_expected
     }
 
-    fn mark_ambiguous(&mut self) {
-        self.fields.mark_ambiguous();
-    }
-
     fn relate_item_substs(
         &mut self,
         _item_def_id: DefId,
diff --git a/compiler/rustc_infer/src/infer/error_reporting/mod.rs b/compiler/rustc_infer/src/infer/error_reporting/mod.rs
index 75c3d9f641d..c9956b60a56 100644
--- a/compiler/rustc_infer/src/infer/error_reporting/mod.rs
+++ b/compiler/rustc_infer/src/infer/error_reporting/mod.rs
@@ -978,7 +978,7 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> {
             let (_, sig, reg) = ty::print::FmtPrinter::new(self.tcx, Namespace::TypeNS)
                 .name_all_regions(sig)
                 .unwrap();
-            let lts: Vec<String> = reg.into_iter().map(|(_, kind)| kind.to_string()).collect();
+            let lts: Vec<String> = reg.into_values().map(|kind| kind.to_string()).collect();
             (if lts.is_empty() { String::new() } else { format!("for<{}> ", lts.join(", ")) }, sig)
         };
 
@@ -2399,10 +2399,8 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> {
                 let suggestion =
                     if has_lifetimes { format!(" + {}", sub) } else { format!(": {}", sub) };
                 let mut suggestions = vec![(sp, suggestion)];
-                for add_lt_sugg in add_lt_suggs {
-                    if let Some(add_lt_sugg) = add_lt_sugg {
-                        suggestions.push(add_lt_sugg);
-                    }
+                for add_lt_sugg in add_lt_suggs.into_iter().flatten() {
+                    suggestions.push(add_lt_sugg);
                 }
                 err.multipart_suggestion_verbose(
                     format!("{msg}..."),
@@ -2426,11 +2424,9 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> {
                     };
                     let mut sugg =
                         vec![(sp, suggestion), (span.shrink_to_hi(), format!(" + {}", new_lt))];
-                    for add_lt_sugg in add_lt_suggs.clone() {
-                        if let Some(lt) = add_lt_sugg {
-                            sugg.push(lt);
-                            sugg.rotate_right(1);
-                        }
+                    for lt in add_lt_suggs.clone().into_iter().flatten() {
+                        sugg.push(lt);
+                        sugg.rotate_right(1);
                     }
                     // `MaybeIncorrect` due to issue #41966.
                     err.multipart_suggestion(msg, sugg, Applicability::MaybeIncorrect);
@@ -2701,11 +2697,6 @@ impl<'tcx> TypeRelation<'tcx> for SameTypeModuloInfer<'_, 'tcx> {
         self.0.tcx
     }
 
-    fn intercrate(&self) -> bool {
-        assert!(!self.0.intercrate);
-        false
-    }
-
     fn param_env(&self) -> ty::ParamEnv<'tcx> {
         // Unused, only for consts which we treat as always equal
         ty::ParamEnv::empty()
@@ -2719,10 +2710,6 @@ impl<'tcx> TypeRelation<'tcx> for SameTypeModuloInfer<'_, 'tcx> {
         true
     }
 
-    fn mark_ambiguous(&mut self) {
-        bug!()
-    }
-
     fn relate_with_variance<T: relate::Relate<'tcx>>(
         &mut self,
         _variance: ty::Variance,
diff --git a/compiler/rustc_infer/src/infer/glb.rs b/compiler/rustc_infer/src/infer/glb.rs
index 6395c4d4b20..2f659d9a665 100644
--- a/compiler/rustc_infer/src/infer/glb.rs
+++ b/compiler/rustc_infer/src/infer/glb.rs
@@ -29,11 +29,6 @@ impl<'tcx> TypeRelation<'tcx> for Glb<'_, '_, 'tcx> {
         "Glb"
     }
 
-    fn intercrate(&self) -> bool {
-        assert!(!self.fields.infcx.intercrate);
-        false
-    }
-
     fn tcx(&self) -> TyCtxt<'tcx> {
         self.fields.tcx()
     }
@@ -46,10 +41,6 @@ impl<'tcx> TypeRelation<'tcx> for Glb<'_, '_, 'tcx> {
         self.a_is_expected
     }
 
-    fn mark_ambiguous(&mut self) {
-        bug!("mark_ambiguous used outside of coherence");
-    }
-
     fn relate_with_variance<T: Relate<'tcx>>(
         &mut self,
         variance: ty::Variance,
diff --git a/compiler/rustc_infer/src/infer/lexical_region_resolve/mod.rs b/compiler/rustc_infer/src/infer/lexical_region_resolve/mod.rs
index cf657756ff5..f298b95ca35 100644
--- a/compiler/rustc_infer/src/infer/lexical_region_resolve/mod.rs
+++ b/compiler/rustc_infer/src/infer/lexical_region_resolve/mod.rs
@@ -13,7 +13,7 @@ use rustc_data_structures::graph::implementation::{
     Direction, Graph, NodeIndex, INCOMING, OUTGOING,
 };
 use rustc_data_structures::intern::Interned;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::{IndexSlice, IndexVec};
 use rustc_middle::ty::fold::TypeFoldable;
 use rustc_middle::ty::PlaceholderRegion;
 use rustc_middle::ty::{self, Ty, TyCtxt};
@@ -203,7 +203,7 @@ impl<'cx, 'tcx> LexicalResolver<'cx, 'tcx> {
 
         // Tracks the `VarSubVar` constraints generated for each region vid. We
         // later use this to expand across vids.
-        let mut constraints = IndexVec::from_elem_n(Vec::new(), var_values.values.len());
+        let mut constraints = IndexVec::from_elem(Vec::new(), &var_values.values);
         // Tracks the changed region vids.
         let mut changes = Vec::new();
         for constraint in self.data.constraints.keys() {
@@ -723,7 +723,7 @@ impl<'cx, 'tcx> LexicalResolver<'cx, 'tcx> {
     fn collect_error_for_expanding_node(
         &self,
         graph: &RegionGraph<'tcx>,
-        dup_vec: &mut IndexVec<RegionVid, Option<RegionVid>>,
+        dup_vec: &mut IndexSlice<RegionVid, Option<RegionVid>>,
         node_idx: RegionVid,
         errors: &mut Vec<RegionResolutionError<'tcx>>,
     ) {
@@ -846,7 +846,7 @@ impl<'cx, 'tcx> LexicalResolver<'cx, 'tcx> {
         graph: &RegionGraph<'tcx>,
         orig_node_idx: RegionVid,
         dir: Direction,
-        mut dup_vec: Option<&mut IndexVec<RegionVid, Option<RegionVid>>>,
+        mut dup_vec: Option<&mut IndexSlice<RegionVid, Option<RegionVid>>>,
     ) -> (Vec<RegionAndOrigin<'tcx>>, FxHashSet<RegionVid>, bool) {
         struct WalkState<'tcx> {
             set: FxHashSet<RegionVid>,
diff --git a/compiler/rustc_infer/src/infer/lub.rs b/compiler/rustc_infer/src/infer/lub.rs
index 98cbd4c561c..e41ec7e6c01 100644
--- a/compiler/rustc_infer/src/infer/lub.rs
+++ b/compiler/rustc_infer/src/infer/lub.rs
@@ -29,11 +29,6 @@ impl<'tcx> TypeRelation<'tcx> for Lub<'_, '_, 'tcx> {
         "Lub"
     }
 
-    fn intercrate(&self) -> bool {
-        assert!(!self.fields.infcx.intercrate);
-        false
-    }
-
     fn tcx(&self) -> TyCtxt<'tcx> {
         self.fields.tcx()
     }
@@ -46,10 +41,6 @@ impl<'tcx> TypeRelation<'tcx> for Lub<'_, '_, 'tcx> {
         self.a_is_expected
     }
 
-    fn mark_ambiguous(&mut self) {
-        bug!("mark_ambiguous used outside of coherence");
-    }
-
     fn relate_with_variance<T: Relate<'tcx>>(
         &mut self,
         variance: ty::Variance,
diff --git a/compiler/rustc_infer/src/infer/nll_relate/mod.rs b/compiler/rustc_infer/src/infer/nll_relate/mod.rs
index f5d20cb7ebf..7616a996da1 100644
--- a/compiler/rustc_infer/src/infer/nll_relate/mod.rs
+++ b/compiler/rustc_infer/src/infer/nll_relate/mod.rs
@@ -443,10 +443,6 @@ where
         self.infcx.tcx
     }
 
-    fn intercrate(&self) -> bool {
-        self.infcx.intercrate
-    }
-
     fn param_env(&self) -> ty::ParamEnv<'tcx> {
         self.delegate.param_env()
     }
@@ -459,17 +455,6 @@ where
         true
     }
 
-    fn mark_ambiguous(&mut self) {
-        let cause = ObligationCause::dummy_with_span(self.delegate.span());
-        let param_env = self.delegate.param_env();
-        self.delegate.register_obligations(vec![Obligation::new(
-            self.tcx(),
-            cause,
-            param_env,
-            ty::Binder::dummy(ty::PredicateKind::Ambiguous),
-        )]);
-    }
-
     #[instrument(skip(self, info), level = "trace", ret)]
     fn relate_with_variance<T: Relate<'tcx>>(
         &mut self,
@@ -834,11 +819,6 @@ where
         self.infcx.tcx
     }
 
-    fn intercrate(&self) -> bool {
-        assert!(!self.infcx.intercrate);
-        false
-    }
-
     fn param_env(&self) -> ty::ParamEnv<'tcx> {
         self.delegate.param_env()
     }
@@ -851,10 +831,6 @@ where
         true
     }
 
-    fn mark_ambiguous(&mut self) {
-        bug!()
-    }
-
     fn relate_with_variance<T: Relate<'tcx>>(
         &mut self,
         variance: ty::Variance,
diff --git a/compiler/rustc_infer/src/infer/outlives/test_type_match.rs b/compiler/rustc_infer/src/infer/outlives/test_type_match.rs
index 3c6cc2b9001..01f900f050e 100644
--- a/compiler/rustc_infer/src/infer/outlives/test_type_match.rs
+++ b/compiler/rustc_infer/src/infer/outlives/test_type_match.rs
@@ -137,10 +137,6 @@ impl<'tcx> TypeRelation<'tcx> for Match<'tcx> {
         "Match"
     }
 
-    fn intercrate(&self) -> bool {
-        false
-    }
-
     fn tcx(&self) -> TyCtxt<'tcx> {
         self.tcx
     }
@@ -151,10 +147,6 @@ impl<'tcx> TypeRelation<'tcx> for Match<'tcx> {
         true
     } // irrelevant
 
-    fn mark_ambiguous(&mut self) {
-        bug!()
-    }
-
     #[instrument(level = "trace", skip(self))]
     fn relate_with_variance<T: Relate<'tcx>>(
         &mut self,
diff --git a/compiler/rustc_infer/src/infer/sub.rs b/compiler/rustc_infer/src/infer/sub.rs
index fc73ca7606d..0dd73a6e999 100644
--- a/compiler/rustc_infer/src/infer/sub.rs
+++ b/compiler/rustc_infer/src/infer/sub.rs
@@ -35,10 +35,6 @@ impl<'tcx> TypeRelation<'tcx> for Sub<'_, '_, 'tcx> {
         "Sub"
     }
 
-    fn intercrate(&self) -> bool {
-        self.fields.infcx.intercrate
-    }
-
     fn tcx(&self) -> TyCtxt<'tcx> {
         self.fields.infcx.tcx
     }
@@ -51,10 +47,6 @@ impl<'tcx> TypeRelation<'tcx> for Sub<'_, '_, 'tcx> {
         self.a_is_expected
     }
 
-    fn mark_ambiguous(&mut self) {
-        self.fields.mark_ambiguous()
-    }
-
     fn with_cause<F, R>(&mut self, cause: Cause, f: F) -> R
     where
         F: FnOnce(&mut Self) -> R,
diff --git a/compiler/rustc_interface/src/interface.rs b/compiler/rustc_interface/src/interface.rs
index 5e38ca034ac..be7fa9378ca 100644
--- a/compiler/rustc_interface/src/interface.rs
+++ b/compiler/rustc_interface/src/interface.rs
@@ -292,7 +292,7 @@ pub fn run_compiler<R: Send>(config: Config, f: impl FnOnce(&Compiler) -> R + Se
                 override_queries: config.override_queries,
             };
 
-            rustc_span::with_source_map(compiler.sess.parse_sess.clone_source_map(), move || {
+            rustc_span::set_source_map(compiler.sess.parse_sess.clone_source_map(), move || {
                 let r = {
                     let _sess_abort_error = OnDrop(|| {
                         compiler.sess.finish_diagnostics(registry);
diff --git a/compiler/rustc_interface/src/tests.rs b/compiler/rustc_interface/src/tests.rs
index eb5990507fb..10dfd32d418 100644
--- a/compiler/rustc_interface/src/tests.rs
+++ b/compiler/rustc_interface/src/tests.rs
@@ -5,6 +5,7 @@ use rustc_data_structures::fx::FxHashSet;
 use rustc_data_structures::profiling::TimePassesFormat;
 use rustc_errors::{emitter::HumanReadableErrorType, registry, ColorConfig};
 use rustc_session::config::rustc_optgroups;
+use rustc_session::config::DebugInfo;
 use rustc_session::config::Input;
 use rustc_session::config::InstrumentXRay;
 use rustc_session::config::TraitSolver;
@@ -574,7 +575,7 @@ fn test_codegen_options_tracking_hash() {
     tracked!(code_model, Some(CodeModel::Large));
     tracked!(control_flow_guard, CFGuard::Checks);
     tracked!(debug_assertions, Some(true));
-    tracked!(debuginfo, 0xdeadbeef);
+    tracked!(debuginfo, DebugInfo::Limited);
     tracked!(embed_bitcode, false);
     tracked!(force_frame_pointers, Some(false));
     tracked!(force_unwind_tables, Some(true));
diff --git a/compiler/rustc_lint/src/methods.rs b/compiler/rustc_lint/src/methods.rs
index 3045fc1a476..4c25d94a1f3 100644
--- a/compiler/rustc_lint/src/methods.rs
+++ b/compiler/rustc_lint/src/methods.rs
@@ -2,9 +2,9 @@ use crate::lints::CStringPtr;
 use crate::LateContext;
 use crate::LateLintPass;
 use crate::LintContext;
-use rustc_hir::{Expr, ExprKind, PathSegment};
+use rustc_hir::{Expr, ExprKind};
 use rustc_middle::ty;
-use rustc_span::{symbol::sym, ExpnKind, Span};
+use rustc_span::{symbol::sym, Span};
 
 declare_lint! {
     /// The `temporary_cstring_as_ptr` lint detects getting the inner pointer of
@@ -34,47 +34,14 @@ declare_lint! {
 
 declare_lint_pass!(TemporaryCStringAsPtr => [TEMPORARY_CSTRING_AS_PTR]);
 
-fn in_macro(span: Span) -> bool {
-    if span.from_expansion() {
-        !matches!(span.ctxt().outer_expn_data().kind, ExpnKind::Desugaring(..))
-    } else {
-        false
-    }
-}
-
-fn first_method_call<'tcx>(
-    expr: &'tcx Expr<'tcx>,
-) -> Option<(&'tcx PathSegment<'tcx>, &'tcx Expr<'tcx>)> {
-    if let ExprKind::MethodCall(path, receiver, args, ..) = &expr.kind {
-        if args.iter().any(|e| e.span.from_expansion()) || receiver.span.from_expansion() {
-            None
-        } else {
-            Some((path, *receiver))
-        }
-    } else {
-        None
-    }
-}
-
 impl<'tcx> LateLintPass<'tcx> for TemporaryCStringAsPtr {
     fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) {
-        if in_macro(expr.span) {
-            return;
-        }
-
-        match first_method_call(expr) {
-            Some((path, unwrap_arg)) if path.ident.name == sym::as_ptr => {
-                let as_ptr_span = path.ident.span;
-                match first_method_call(unwrap_arg) {
-                    Some((path, receiver))
-                        if path.ident.name == sym::unwrap || path.ident.name == sym::expect =>
-                    {
-                        lint_cstring_as_ptr(cx, as_ptr_span, receiver, unwrap_arg);
-                    }
-                    _ => return,
-                }
-            }
-            _ => return,
+        if let ExprKind::MethodCall(as_ptr_path, as_ptr_receiver, ..) = expr.kind
+            && as_ptr_path.ident.name == sym::as_ptr
+            && let ExprKind::MethodCall(unwrap_path, unwrap_receiver, ..) = as_ptr_receiver.kind
+            && (unwrap_path.ident.name == sym::unwrap || unwrap_path.ident.name == sym::expect)
+        {
+            lint_cstring_as_ptr(cx, as_ptr_path.ident.span, unwrap_receiver, as_ptr_receiver);
         }
     }
 }
diff --git a/compiler/rustc_lint/src/unused.rs b/compiler/rustc_lint/src/unused.rs
index 42e59f92840..ad328006051 100644
--- a/compiler/rustc_lint/src/unused.rs
+++ b/compiler/rustc_lint/src/unused.rs
@@ -805,7 +805,9 @@ trait UnusedDelimLint {
     fn check_item(&mut self, cx: &EarlyContext<'_>, item: &ast::Item) {
         use ast::ItemKind::*;
 
-        if let Const(.., Some(expr)) | Static(.., Some(expr)) = &item.kind {
+        if let Const(box ast::ConstItem { expr: Some(expr), .. })
+        | Static(box ast::StaticItem { expr: Some(expr), .. }) = &item.kind
+        {
             self.check_unused_delims_expr(
                 cx,
                 expr,
diff --git a/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp b/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp
index e3493caaaf7..6a2fd5aa6e6 100644
--- a/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp
+++ b/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp
@@ -682,6 +682,7 @@ enum class LLVMRustDebugEmissionKind {
   NoDebug,
   FullDebug,
   LineTablesOnly,
+  DebugDirectivesOnly,
 };
 
 static DICompileUnit::DebugEmissionKind fromRust(LLVMRustDebugEmissionKind Kind) {
@@ -692,6 +693,8 @@ static DICompileUnit::DebugEmissionKind fromRust(LLVMRustDebugEmissionKind Kind)
     return DICompileUnit::DebugEmissionKind::FullDebug;
   case LLVMRustDebugEmissionKind::LineTablesOnly:
     return DICompileUnit::DebugEmissionKind::LineTablesOnly;
+  case LLVMRustDebugEmissionKind::DebugDirectivesOnly:
+    return DICompileUnit::DebugEmissionKind::DebugDirectivesOnly;
   default:
     report_fatal_error("bad DebugEmissionKind.");
   }
diff --git a/compiler/rustc_macros/src/diagnostics/fluent.rs b/compiler/rustc_macros/src/diagnostics/fluent.rs
index 3b2f5cfdc73..9f96a041487 100644
--- a/compiler/rustc_macros/src/diagnostics/fluent.rs
+++ b/compiler/rustc_macros/src/diagnostics/fluent.rs
@@ -15,8 +15,7 @@ use proc_macro2::TokenStream;
 use quote::quote;
 use std::{
     collections::{HashMap, HashSet},
-    fs::File,
-    io::Read,
+    fs::read_to_string,
     path::{Path, PathBuf},
 };
 use syn::{parse_macro_input, Ident, LitStr};
@@ -95,22 +94,18 @@ pub(crate) fn fluent_messages(input: proc_macro::TokenStream) -> proc_macro::Tok
 
     // As this macro also outputs an `include_str!` for this file, the macro will always be
     // re-executed when the file changes.
-    let mut resource_file = match File::open(absolute_ftl_path) {
-        Ok(resource_file) => resource_file,
+    let resource_contents = match read_to_string(absolute_ftl_path) {
+        Ok(resource_contents) => resource_contents,
         Err(e) => {
-            Diagnostic::spanned(resource_span, Level::Error, "could not open Fluent resource")
-                .note(e.to_string())
-                .emit();
+            Diagnostic::spanned(
+                resource_span,
+                Level::Error,
+                format!("could not open Fluent resource: {}", e.to_string()),
+            )
+            .emit();
             return failed(&crate_name);
         }
     };
-    let mut resource_contents = String::new();
-    if let Err(e) = resource_file.read_to_string(&mut resource_contents) {
-        Diagnostic::spanned(resource_span, Level::Error, "could not read Fluent resource")
-            .note(e.to_string())
-            .emit();
-        return failed(&crate_name);
-    }
     let mut bad = false;
     for esc in ["\\n", "\\\"", "\\'"] {
         for _ in resource_contents.matches(esc) {
diff --git a/compiler/rustc_middle/messages.ftl b/compiler/rustc_middle/messages.ftl
index 4f4e5c6a2c9..bd9d89deee1 100644
--- a/compiler/rustc_middle/messages.ftl
+++ b/compiler/rustc_middle/messages.ftl
@@ -16,6 +16,10 @@ middle_limit_invalid =
     `limit` must be a non-negative integer
     .label = {$error_str}
 
+middle_recursion_limit_reached =
+    reached the recursion limit finding the struct tail for `{$ty}`
+    .help = consider increasing the recursion limit by adding a `#![recursion_limit = "{$suggested_limit}"]`
+
 middle_const_eval_non_int =
     constant evaluation of enum discriminant resulted in non-integer
 
diff --git a/compiler/rustc_middle/src/error.rs b/compiler/rustc_middle/src/error.rs
index 5e94da8cb4d..dc4aa18640f 100644
--- a/compiler/rustc_middle/src/error.rs
+++ b/compiler/rustc_middle/src/error.rs
@@ -50,6 +50,14 @@ pub struct LimitInvalid<'a> {
 }
 
 #[derive(Diagnostic)]
+#[diag(middle_recursion_limit_reached)]
+#[help]
+pub struct RecursionLimitReached<'tcx> {
+    pub ty: Ty<'tcx>,
+    pub suggested_limit: rustc_session::Limit,
+}
+
+#[derive(Diagnostic)]
 #[diag(middle_const_eval_non_int)]
 pub struct ConstEvalNonIntError {
     #[primary_span]
diff --git a/compiler/rustc_middle/src/middle/mod.rs b/compiler/rustc_middle/src/middle/mod.rs
index 0b6774f1b1f..9c25f3009ba 100644
--- a/compiler/rustc_middle/src/middle/mod.rs
+++ b/compiler/rustc_middle/src/middle/mod.rs
@@ -19,7 +19,7 @@ pub mod lib_features {
                 .stable
                 .iter()
                 .map(|(f, (s, _))| (*f, Some(*s)))
-                .chain(self.unstable.iter().map(|(f, _)| (*f, None)))
+                .chain(self.unstable.keys().map(|f| (*f, None)))
                 .collect();
             all_features.sort_unstable_by(|a, b| a.0.as_str().partial_cmp(b.0.as_str()).unwrap());
             all_features
diff --git a/compiler/rustc_middle/src/mir/basic_blocks.rs b/compiler/rustc_middle/src/mir/basic_blocks.rs
index b93871769b7..3fb46837935 100644
--- a/compiler/rustc_middle/src/mir/basic_blocks.rs
+++ b/compiler/rustc_middle/src/mir/basic_blocks.rs
@@ -6,7 +6,7 @@ use rustc_data_structures::graph;
 use rustc_data_structures::graph::dominators::{dominators, Dominators};
 use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
 use rustc_data_structures::sync::OnceCell;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::{IndexSlice, IndexVec};
 use rustc_serialize::{Decodable, Decoder, Encodable, Encoder};
 use smallvec::SmallVec;
 
@@ -124,10 +124,10 @@ impl<'tcx> BasicBlocks<'tcx> {
 }
 
 impl<'tcx> std::ops::Deref for BasicBlocks<'tcx> {
-    type Target = IndexVec<BasicBlock, BasicBlockData<'tcx>>;
+    type Target = IndexSlice<BasicBlock, BasicBlockData<'tcx>>;
 
     #[inline]
-    fn deref(&self) -> &IndexVec<BasicBlock, BasicBlockData<'tcx>> {
+    fn deref(&self) -> &IndexSlice<BasicBlock, BasicBlockData<'tcx>> {
         &self.basic_blocks
     }
 }
diff --git a/compiler/rustc_middle/src/mir/mod.rs b/compiler/rustc_middle/src/mir/mod.rs
index de7e8bc861d..b88a315cec1 100644
--- a/compiler/rustc_middle/src/mir/mod.rs
+++ b/compiler/rustc_middle/src/mir/mod.rs
@@ -27,7 +27,7 @@ use polonius_engine::Atom;
 pub use rustc_ast::Mutability;
 use rustc_data_structures::fx::FxHashSet;
 use rustc_data_structures::graph::dominators::Dominators;
-use rustc_index::vec::{Idx, IndexVec};
+use rustc_index::vec::{Idx, IndexSlice, IndexVec};
 use rustc_serialize::{Decodable, Encodable};
 use rustc_span::symbol::Symbol;
 use rustc_span::{Span, DUMMY_SP};
@@ -70,12 +70,19 @@ pub use self::pretty::{
 };
 
 /// Types for locals
-pub type LocalDecls<'tcx> = IndexVec<Local, LocalDecl<'tcx>>;
+pub type LocalDecls<'tcx> = IndexSlice<Local, LocalDecl<'tcx>>;
 
 pub trait HasLocalDecls<'tcx> {
     fn local_decls(&self) -> &LocalDecls<'tcx>;
 }
 
+impl<'tcx> HasLocalDecls<'tcx> for IndexVec<Local, LocalDecl<'tcx>> {
+    #[inline]
+    fn local_decls(&self) -> &LocalDecls<'tcx> {
+        self
+    }
+}
+
 impl<'tcx> HasLocalDecls<'tcx> for LocalDecls<'tcx> {
     #[inline]
     fn local_decls(&self) -> &LocalDecls<'tcx> {
@@ -250,7 +257,7 @@ pub struct Body<'tcx> {
     /// The first local is the return value pointer, followed by `arg_count`
     /// locals for the function arguments, followed by any user-declared
     /// variables and temporaries.
-    pub local_decls: LocalDecls<'tcx>,
+    pub local_decls: IndexVec<Local, LocalDecl<'tcx>>,
 
     /// User type annotations.
     pub user_type_annotations: ty::CanonicalUserTypeAnnotations<'tcx>,
@@ -311,7 +318,7 @@ impl<'tcx> Body<'tcx> {
         source: MirSource<'tcx>,
         basic_blocks: IndexVec<BasicBlock, BasicBlockData<'tcx>>,
         source_scopes: IndexVec<SourceScope, SourceScopeData<'tcx>>,
-        local_decls: LocalDecls<'tcx>,
+        local_decls: IndexVec<Local, LocalDecl<'tcx>>,
         user_type_annotations: ty::CanonicalUserTypeAnnotations<'tcx>,
         arg_count: usize,
         var_debug_info: Vec<VarDebugInfo<'tcx>>,
@@ -1029,8 +1036,7 @@ impl<'tcx> LocalDecl<'tcx> {
 
 #[derive(Clone, TyEncodable, TyDecodable, HashStable, TypeFoldable, TypeVisitable)]
 pub enum VarDebugInfoContents<'tcx> {
-    /// NOTE(eddyb) There's an unenforced invariant that this `Place` is
-    /// based on a `Local`, not a `Static`, and contains no indexing.
+    /// This `Place` only contains projection which satisfy `can_use_in_debuginfo`.
     Place(Place<'tcx>),
     Const(Constant<'tcx>),
     /// The user variable's data is split across several fragments,
@@ -1040,6 +1046,7 @@ pub enum VarDebugInfoContents<'tcx> {
     /// the underlying debuginfo feature this relies on.
     Composite {
         /// Type of the original user variable.
+        /// This cannot contain a union or an enum.
         ty: Ty<'tcx>,
         /// All the parts of the original user variable, which ended
         /// up in disjoint places, due to optimizations.
@@ -1068,17 +1075,16 @@ pub struct VarDebugInfoFragment<'tcx> {
     /// Where in the composite user variable this fragment is,
     /// represented as a "projection" into the composite variable.
     /// At lower levels, this corresponds to a byte/bit range.
-    // NOTE(eddyb) there's an unenforced invariant that this contains
-    // only `Field`s, and not into `enum` variants or `union`s.
-    // FIXME(eddyb) support this for `enum`s by either using DWARF's
+    ///
+    /// This can only contain `PlaceElem::Field`.
+    // FIXME support this for `enum`s by either using DWARF's
     // more advanced control-flow features (unsupported by LLVM?)
     // to match on the discriminant, or by using custom type debuginfo
     // with non-overlapping variants for the composite variable.
     pub projection: Vec<PlaceElem<'tcx>>,
 
     /// Where the data for this fragment can be found.
-    // NOTE(eddyb) There's an unenforced invariant that this `Place` is
-    // contains no indexing (with a non-constant index).
+    /// This `Place` only contains projection which satisfy `can_use_in_debuginfo`.
     pub contents: Place<'tcx>,
 }
 
@@ -1531,6 +1537,17 @@ impl<V, T> ProjectionElem<V, T> {
     pub fn is_field_to(&self, f: FieldIdx) -> bool {
         matches!(*self, Self::Field(x, _) if x == f)
     }
+
+    /// Returns `true` if this is accepted inside `VarDebugInfoContents::Place`.
+    pub fn can_use_in_debuginfo(&self) -> bool {
+        match self {
+            Self::Deref | Self::Downcast(_, _) | Self::Field(_, _) => true,
+            Self::ConstantIndex { .. }
+            | Self::Index(_)
+            | Self::OpaqueCast(_)
+            | Self::Subslice { .. } => false,
+        }
+    }
 }
 
 /// Alias for projections as they appear in `UserTypeProjection`, where we
@@ -1779,7 +1796,7 @@ impl SourceScope {
     /// from the function that was inlined instead of the function call site.
     pub fn lint_root(
         self,
-        source_scopes: &IndexVec<SourceScope, SourceScopeData<'_>>,
+        source_scopes: &IndexSlice<SourceScope, SourceScopeData<'_>>,
     ) -> Option<HirId> {
         let mut data = &source_scopes[self];
         // FIXME(oli-obk): we should be able to just walk the `inlined_parent_scope`, but it
@@ -1799,7 +1816,7 @@ impl SourceScope {
     #[inline]
     pub fn inlined_instance<'tcx>(
         self,
-        source_scopes: &IndexVec<SourceScope, SourceScopeData<'tcx>>,
+        source_scopes: &IndexSlice<SourceScope, SourceScopeData<'tcx>>,
     ) -> Option<ty::Instance<'tcx>> {
         let scope_data = &source_scopes[self];
         if let Some((inlined_instance, _)) = scope_data.inlined {
diff --git a/compiler/rustc_middle/src/mir/syntax.rs b/compiler/rustc_middle/src/mir/syntax.rs
index 413a7629b9a..cc35e6106e2 100644
--- a/compiler/rustc_middle/src/mir/syntax.rs
+++ b/compiler/rustc_middle/src/mir/syntax.rs
@@ -16,6 +16,7 @@ use rustc_ast::{InlineAsmOptions, InlineAsmTemplatePiece};
 use rustc_hir::def_id::DefId;
 use rustc_hir::{self as hir};
 use rustc_hir::{self, GeneratorKind};
+use rustc_index::vec::IndexVec;
 use rustc_target::abi::{FieldIdx, VariantIdx};
 
 use rustc_ast::Mutability;
@@ -1125,7 +1126,7 @@ pub enum Rvalue<'tcx> {
     ///
     /// Disallowed after deaggregation for all aggregate kinds except `Array` and `Generator`. After
     /// generator lowering, `Generator` aggregate kinds are disallowed too.
-    Aggregate(Box<AggregateKind<'tcx>>, Vec<Operand<'tcx>>),
+    Aggregate(Box<AggregateKind<'tcx>>, IndexVec<FieldIdx, Operand<'tcx>>),
 
     /// Transmutes a `*mut u8` into shallow-initialized `Box<T>`.
     ///
@@ -1186,7 +1187,7 @@ pub enum AggregateKind<'tcx> {
     /// active field number and is present only for union expressions
     /// -- e.g., for a union expression `SomeUnion { c: .. }`, the
     /// active field index would identity the field `c`
-    Adt(DefId, VariantIdx, SubstsRef<'tcx>, Option<UserTypeAnnotationIndex>, Option<usize>),
+    Adt(DefId, VariantIdx, SubstsRef<'tcx>, Option<UserTypeAnnotationIndex>, Option<FieldIdx>),
 
     Closure(DefId, SubstsRef<'tcx>),
     Generator(DefId, SubstsRef<'tcx>, hir::Movability),
@@ -1263,7 +1264,7 @@ pub enum BinOp {
 mod size_asserts {
     use super::*;
     // tidy-alphabetical-start
-    static_assert_size!(AggregateKind<'_>, 40);
+    static_assert_size!(AggregateKind<'_>, 32);
     static_assert_size!(Operand<'_>, 24);
     static_assert_size!(Place<'_>, 16);
     static_assert_size!(PlaceElem<'_>, 24);
diff --git a/compiler/rustc_middle/src/mir/tcx.rs b/compiler/rustc_middle/src/mir/tcx.rs
index ac28ef5276c..0092401470f 100644
--- a/compiler/rustc_middle/src/mir/tcx.rs
+++ b/compiler/rustc_middle/src/mir/tcx.rs
@@ -116,7 +116,7 @@ impl<'tcx> PlaceTy<'tcx> {
 }
 
 impl<'tcx> Place<'tcx> {
-    pub fn ty_from<D>(
+    pub fn ty_from<D: ?Sized>(
         local: Local,
         projection: &[PlaceElem<'tcx>],
         local_decls: &D,
@@ -132,7 +132,7 @@ impl<'tcx> Place<'tcx> {
             })
     }
 
-    pub fn ty<D>(&self, local_decls: &D, tcx: TyCtxt<'tcx>) -> PlaceTy<'tcx>
+    pub fn ty<D: ?Sized>(&self, local_decls: &D, tcx: TyCtxt<'tcx>) -> PlaceTy<'tcx>
     where
         D: HasLocalDecls<'tcx>,
     {
@@ -141,7 +141,7 @@ impl<'tcx> Place<'tcx> {
 }
 
 impl<'tcx> PlaceRef<'tcx> {
-    pub fn ty<D>(&self, local_decls: &D, tcx: TyCtxt<'tcx>) -> PlaceTy<'tcx>
+    pub fn ty<D: ?Sized>(&self, local_decls: &D, tcx: TyCtxt<'tcx>) -> PlaceTy<'tcx>
     where
         D: HasLocalDecls<'tcx>,
     {
@@ -155,7 +155,7 @@ pub enum RvalueInitializationState {
 }
 
 impl<'tcx> Rvalue<'tcx> {
-    pub fn ty<D>(&self, local_decls: &D, tcx: TyCtxt<'tcx>) -> Ty<'tcx>
+    pub fn ty<D: ?Sized>(&self, local_decls: &D, tcx: TyCtxt<'tcx>) -> Ty<'tcx>
     where
         D: HasLocalDecls<'tcx>,
     {
@@ -217,7 +217,7 @@ impl<'tcx> Rvalue<'tcx> {
 }
 
 impl<'tcx> Operand<'tcx> {
-    pub fn ty<D>(&self, local_decls: &D, tcx: TyCtxt<'tcx>) -> Ty<'tcx>
+    pub fn ty<D: ?Sized>(&self, local_decls: &D, tcx: TyCtxt<'tcx>) -> Ty<'tcx>
     where
         D: HasLocalDecls<'tcx>,
     {
diff --git a/compiler/rustc_middle/src/mir/traversal.rs b/compiler/rustc_middle/src/mir/traversal.rs
index f37222cb297..62cdf794b1e 100644
--- a/compiler/rustc_middle/src/mir/traversal.rs
+++ b/compiler/rustc_middle/src/mir/traversal.rs
@@ -101,7 +101,7 @@ impl<'a, 'tcx> Iterator for Preorder<'a, 'tcx> {
 ///
 /// A Postorder traversal of this graph is `D B C A` or `D C B A`
 pub struct Postorder<'a, 'tcx> {
-    basic_blocks: &'a IndexVec<BasicBlock, BasicBlockData<'tcx>>,
+    basic_blocks: &'a IndexSlice<BasicBlock, BasicBlockData<'tcx>>,
     visited: BitSet<BasicBlock>,
     visit_stack: Vec<(BasicBlock, Successors<'a>)>,
     root_is_start_block: bool,
@@ -109,7 +109,7 @@ pub struct Postorder<'a, 'tcx> {
 
 impl<'a, 'tcx> Postorder<'a, 'tcx> {
     pub fn new(
-        basic_blocks: &'a IndexVec<BasicBlock, BasicBlockData<'tcx>>,
+        basic_blocks: &'a IndexSlice<BasicBlock, BasicBlockData<'tcx>>,
         root: BasicBlock,
     ) -> Postorder<'a, 'tcx> {
         let mut po = Postorder {
diff --git a/compiler/rustc_middle/src/ty/_match.rs b/compiler/rustc_middle/src/ty/_match.rs
index df9aa765dc1..468c2c818b2 100644
--- a/compiler/rustc_middle/src/ty/_match.rs
+++ b/compiler/rustc_middle/src/ty/_match.rs
@@ -37,10 +37,6 @@ impl<'tcx> TypeRelation<'tcx> for Match<'tcx> {
         self.tcx
     }
 
-    fn intercrate(&self) -> bool {
-        false
-    }
-
     fn param_env(&self) -> ty::ParamEnv<'tcx> {
         self.param_env
     }
@@ -48,10 +44,6 @@ impl<'tcx> TypeRelation<'tcx> for Match<'tcx> {
         true
     } // irrelevant
 
-    fn mark_ambiguous(&mut self) {
-        bug!()
-    }
-
     fn relate_with_variance<T: Relate<'tcx>>(
         &mut self,
         _: ty::Variance,
diff --git a/compiler/rustc_middle/src/ty/adt.rs b/compiler/rustc_middle/src/ty/adt.rs
index 50d7fb1813a..3a03c0901d7 100644
--- a/compiler/rustc_middle/src/ty/adt.rs
+++ b/compiler/rustc_middle/src/ty/adt.rs
@@ -10,7 +10,7 @@ use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
 use rustc_hir as hir;
 use rustc_hir::def::{CtorKind, DefKind, Res};
 use rustc_hir::def_id::DefId;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::{IndexSlice, IndexVec};
 use rustc_query_system::ich::StableHashingContext;
 use rustc_session::DataTypeKind;
 use rustc_span::symbol::sym;
@@ -168,7 +168,7 @@ impl<'tcx> AdtDef<'tcx> {
     }
 
     #[inline]
-    pub fn variants(self) -> &'tcx IndexVec<VariantIdx, VariantDef> {
+    pub fn variants(self) -> &'tcx IndexSlice<VariantIdx, VariantDef> {
         &self.0.0.variants
     }
 
diff --git a/compiler/rustc_middle/src/ty/consts/valtree.rs b/compiler/rustc_middle/src/ty/consts/valtree.rs
index 5ed4af2e922..8b96864ddd7 100644
--- a/compiler/rustc_middle/src/ty/consts/valtree.rs
+++ b/compiler/rustc_middle/src/ty/consts/valtree.rs
@@ -79,7 +79,7 @@ impl<'tcx> ValTree<'tcx> {
     }
 
     pub fn try_to_target_usize(self, tcx: TyCtxt<'tcx>) -> Option<u64> {
-        self.try_to_scalar_int().map(|s| s.try_to_target_usize(tcx).ok()).flatten()
+        self.try_to_scalar_int().and_then(|s| s.try_to_target_usize(tcx).ok())
     }
 
     /// Get the values inside the ValTree as a slice of bytes. This only works for
diff --git a/compiler/rustc_middle/src/ty/normalize_erasing_regions.rs b/compiler/rustc_middle/src/ty/normalize_erasing_regions.rs
index 578cd82aa4c..7c59879a187 100644
--- a/compiler/rustc_middle/src/ty/normalize_erasing_regions.rs
+++ b/compiler/rustc_middle/src/ty/normalize_erasing_regions.rs
@@ -193,9 +193,9 @@ impl<'tcx> NormalizeAfterErasingRegionsFolder<'tcx> {
         let arg = self.param_env.and(arg);
 
         self.tcx.try_normalize_generic_arg_after_erasing_regions(arg).unwrap_or_else(|_| bug!(
-                "Failed to normalize {:?}, maybe try to call `try_normalize_erasing_regions` instead",
-                arg.value
-            ))
+            "Failed to normalize {:?}, maybe try to call `try_normalize_erasing_regions` instead",
+            arg.value
+        ))
     }
 }
 
diff --git a/compiler/rustc_middle/src/ty/relate.rs b/compiler/rustc_middle/src/ty/relate.rs
index 3fc5f5bed8f..46c931d61dc 100644
--- a/compiler/rustc_middle/src/ty/relate.rs
+++ b/compiler/rustc_middle/src/ty/relate.rs
@@ -22,8 +22,6 @@ pub enum Cause {
 pub trait TypeRelation<'tcx>: Sized {
     fn tcx(&self) -> TyCtxt<'tcx>;
 
-    fn intercrate(&self) -> bool;
-
     fn param_env(&self) -> ty::ParamEnv<'tcx>;
 
     /// Returns a static string we can use for printouts.
@@ -33,9 +31,6 @@ pub trait TypeRelation<'tcx>: Sized {
     /// relation. Just affects error messages.
     fn a_is_expected(&self) -> bool;
 
-    /// Used during coherence. If called, must emit an always-ambiguous obligation.
-    fn mark_ambiguous(&mut self);
-
     fn with_cause<F, R>(&mut self, _cause: Cause, f: F) -> R
     where
         F: FnOnce(&mut Self) -> R,
@@ -559,23 +554,16 @@ pub fn super_relate_tys<'tcx, R: TypeRelation<'tcx>>(
             &ty::Alias(ty::Opaque, ty::AliasTy { def_id: a_def_id, substs: a_substs, .. }),
             &ty::Alias(ty::Opaque, ty::AliasTy { def_id: b_def_id, substs: b_substs, .. }),
         ) if a_def_id == b_def_id => {
-            if relation.intercrate() {
-                // During coherence, opaque types should be treated as equal to each other, even if their generic params
-                // differ, as they could resolve to the same hidden type, even for different generic params.
-                relation.mark_ambiguous();
-                Ok(a)
-            } else {
-                let opt_variances = tcx.variances_of(a_def_id);
-                let substs = relate_substs_with_variances(
-                    relation,
-                    a_def_id,
-                    opt_variances,
-                    a_substs,
-                    b_substs,
-                    false, // do not fetch `type_of(a_def_id)`, as it will cause a cycle
-                )?;
-                Ok(tcx.mk_opaque(a_def_id, substs))
-            }
+            let opt_variances = tcx.variances_of(a_def_id);
+            let substs = relate_substs_with_variances(
+                relation,
+                a_def_id,
+                opt_variances,
+                a_substs,
+                b_substs,
+                false, // do not fetch `type_of(a_def_id)`, as it will cause a cycle
+            )?;
+            Ok(tcx.mk_opaque(a_def_id, substs))
         }
 
         _ => Err(TypeError::Sorts(expected_found(relation, a, b))),
diff --git a/compiler/rustc_middle/src/ty/util.rs b/compiler/rustc_middle/src/ty/util.rs
index d3565b28ae5..4411bcd927d 100644
--- a/compiler/rustc_middle/src/ty/util.rs
+++ b/compiler/rustc_middle/src/ty/util.rs
@@ -19,7 +19,8 @@ use rustc_hir::def_id::{DefId, LocalDefId};
 use rustc_index::bit_set::GrowableBitSet;
 use rustc_index::vec::{Idx, IndexVec};
 use rustc_macros::HashStable;
-use rustc_span::{sym, DUMMY_SP};
+use rustc_session::Limit;
+use rustc_span::sym;
 use rustc_target::abi::{Integer, IntegerType, Size, TargetDataLayout};
 use rustc_target::spec::abi::Abi;
 use smallvec::SmallVec;
@@ -225,10 +226,13 @@ impl<'tcx> TyCtxt<'tcx> {
         let recursion_limit = self.recursion_limit();
         for iteration in 0.. {
             if !recursion_limit.value_within_limit(iteration) {
-                return self.ty_error_with_message(
-                    DUMMY_SP,
-                    &format!("reached the recursion limit finding the struct tail for {}", ty),
-                );
+                let suggested_limit = match recursion_limit {
+                    Limit(0) => Limit(2),
+                    limit => limit * 2,
+                };
+                let reported =
+                    self.sess.emit_err(crate::error::RecursionLimitReached { ty, suggested_limit });
+                return self.ty_error(reported);
             }
             match *ty.kind() {
                 ty::Adt(def, substs) => {
diff --git a/compiler/rustc_mir_build/src/build/custom/mod.rs b/compiler/rustc_mir_build/src/build/custom/mod.rs
index 33fdc1901cd..d385153ba94 100644
--- a/compiler/rustc_mir_build/src/build/custom/mod.rs
+++ b/compiler/rustc_mir_build/src/build/custom/mod.rs
@@ -21,7 +21,7 @@ use rustc_ast::Attribute;
 use rustc_data_structures::fx::FxHashMap;
 use rustc_hir::def_id::DefId;
 use rustc_hir::HirId;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::{IndexSlice, IndexVec};
 use rustc_middle::{
     mir::*,
     thir::*,
@@ -37,7 +37,7 @@ pub(super) fn build_custom_mir<'tcx>(
     hir_id: HirId,
     thir: &Thir<'tcx>,
     expr: ExprId,
-    params: &IndexVec<ParamId, Param<'tcx>>,
+    params: &IndexSlice<ParamId, Param<'tcx>>,
     return_ty: Ty<'tcx>,
     return_ty_span: Span,
     span: Span,
@@ -49,7 +49,7 @@ pub(super) fn build_custom_mir<'tcx>(
         phase: MirPhase::Built,
         source_scopes: IndexVec::new(),
         generator: None,
-        local_decls: LocalDecls::new(),
+        local_decls: IndexVec::new(),
         user_type_annotations: IndexVec::new(),
         arg_count: params.len(),
         spread_arg: None,
diff --git a/compiler/rustc_mir_build/src/build/custom/parse.rs b/compiler/rustc_mir_build/src/build/custom/parse.rs
index d72770e70c7..12b2f5d8077 100644
--- a/compiler/rustc_mir_build/src/build/custom/parse.rs
+++ b/compiler/rustc_mir_build/src/build/custom/parse.rs
@@ -1,4 +1,4 @@
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::IndexSlice;
 use rustc_middle::{mir::*, thir::*, ty::Ty};
 use rustc_span::Span;
 
@@ -81,7 +81,7 @@ impl<'tcx, 'body> ParseCtxt<'tcx, 'body> {
         }
     }
 
-    pub fn parse_args(&mut self, params: &IndexVec<ParamId, Param<'tcx>>) -> PResult<()> {
+    pub fn parse_args(&mut self, params: &IndexSlice<ParamId, Param<'tcx>>) -> PResult<()> {
         for param in params.iter() {
             let (var, span) = {
                 let pat = param.pat.as_ref().unwrap();
diff --git a/compiler/rustc_mir_build/src/build/custom/parse/instruction.rs b/compiler/rustc_mir_build/src/build/custom/parse/instruction.rs
index 77a5017b363..33b73928704 100644
--- a/compiler/rustc_mir_build/src/build/custom/parse/instruction.rs
+++ b/compiler/rustc_mir_build/src/build/custom/parse/instruction.rs
@@ -185,7 +185,7 @@ impl<'tcx, 'body> ParseCtxt<'tcx, 'body> {
             },
             ExprKind::Adt(box AdtExpr{ adt_def, variant_index, substs, fields, .. }) => {
                 let is_union = adt_def.is_union();
-                let active_field_index = is_union.then(|| fields[0].name.index());
+                let active_field_index = is_union.then(|| fields[0].name);
 
                 Ok(Rvalue::Aggregate(
                     Box::new(AggregateKind::Adt(adt_def.did(), *variant_index, substs, None, active_field_index)),
diff --git a/compiler/rustc_mir_build/src/build/expr/as_constant.rs b/compiler/rustc_mir_build/src/build/expr/as_constant.rs
index cfacb5ea327..99291740ac8 100644
--- a/compiler/rustc_mir_build/src/build/expr/as_constant.rs
+++ b/compiler/rustc_mir_build/src/build/expr/as_constant.rs
@@ -62,21 +62,21 @@ pub fn as_constant_inner<'tcx>(
             Constant { span, user_ty: None, literal }
         }
         ExprKind::NonHirLiteral { lit, ref user_ty } => {
-            let user_ty = user_ty.as_ref().map(push_cuta).flatten();
+            let user_ty = user_ty.as_ref().and_then(push_cuta);
 
             let literal = ConstantKind::Val(ConstValue::Scalar(Scalar::Int(lit)), ty);
 
             Constant { span, user_ty, literal }
         }
         ExprKind::ZstLiteral { ref user_ty } => {
-            let user_ty = user_ty.as_ref().map(push_cuta).flatten();
+            let user_ty = user_ty.as_ref().and_then(push_cuta);
 
             let literal = ConstantKind::Val(ConstValue::ZeroSized, ty);
 
             Constant { span, user_ty, literal }
         }
         ExprKind::NamedConst { def_id, substs, ref user_ty } => {
-            let user_ty = user_ty.as_ref().map(push_cuta).flatten();
+            let user_ty = user_ty.as_ref().and_then(push_cuta);
 
             let uneval = mir::UnevaluatedConst::new(ty::WithOptConstParam::unknown(def_id), substs);
             let literal = ConstantKind::Unevaluated(uneval, ty);
diff --git a/compiler/rustc_mir_build/src/build/expr/as_rvalue.rs b/compiler/rustc_mir_build/src/build/expr/as_rvalue.rs
index d1878bf77ef..baa12ec11c3 100644
--- a/compiler/rustc_mir_build/src/build/expr/as_rvalue.rs
+++ b/compiler/rustc_mir_build/src/build/expr/as_rvalue.rs
@@ -1,8 +1,8 @@
 //! See docs in `build/expr/mod.rs`.
 
-use rustc_index::vec::Idx;
+use rustc_index::vec::{Idx, IndexVec};
 use rustc_middle::ty::util::IntTypeExt;
-use rustc_target::abi::{Abi, Primitive};
+use rustc_target::abi::{Abi, FieldIdx, Primitive};
 
 use crate::build::expr::as_place::PlaceBase;
 use crate::build::expr::category::{Category, RvalueFunc};
@@ -17,7 +17,6 @@ use rustc_middle::thir::*;
 use rustc_middle::ty::cast::{mir_cast_kind, CastTy};
 use rustc_middle::ty::{self, Ty, UpvarSubsts};
 use rustc_span::Span;
-use rustc_target::abi::FieldIdx;
 
 impl<'a, 'tcx> Builder<'a, 'tcx> {
     /// Returns an rvalue suitable for use until the end of the current
@@ -327,7 +326,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
 
                 // first process the set of fields
                 let el_ty = expr.ty.sequence_element_type(this.tcx);
-                let fields: Vec<_> = fields
+                let fields: IndexVec<FieldIdx, _> = fields
                     .into_iter()
                     .copied()
                     .map(|f| {
@@ -348,7 +347,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
             ExprKind::Tuple { ref fields } => {
                 // see (*) above
                 // first process the set of fields
-                let fields: Vec<_> = fields
+                let fields: IndexVec<FieldIdx, _> = fields
                     .into_iter()
                     .copied()
                     .map(|f| {
@@ -402,7 +401,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
                 }
 
                 // see (*) above
-                let operands: Vec<_> = upvars
+                let operands: IndexVec<FieldIdx, _> = upvars
                     .into_iter()
                     .copied()
                     .map(|upvar| {
@@ -710,7 +709,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
             }
             this.record_operands_moved(&[value_operand]);
         }
-        block.and(Rvalue::Aggregate(Box::new(AggregateKind::Array(elem_ty)), Vec::new()))
+        block.and(Rvalue::Aggregate(Box::new(AggregateKind::Array(elem_ty)), IndexVec::new()))
     }
 
     fn limit_capture_mutability(
diff --git a/compiler/rustc_mir_build/src/build/expr/into.rs b/compiler/rustc_mir_build/src/build/expr/into.rs
index b8260c719c8..8efaba1f602 100644
--- a/compiler/rustc_mir_build/src/build/expr/into.rs
+++ b/compiler/rustc_mir_build/src/build/expr/into.rs
@@ -6,11 +6,9 @@ use rustc_ast::InlineAsmOptions;
 use rustc_data_structures::fx::FxHashMap;
 use rustc_data_structures::stack::ensure_sufficient_stack;
 use rustc_hir as hir;
-use rustc_index::vec::Idx;
 use rustc_middle::mir::*;
 use rustc_middle::thir::*;
 use rustc_middle::ty::CanonicalUserTypeAnnotation;
-use rustc_target::abi::FieldIdx;
 use std::iter;
 
 impl<'a, 'tcx> Builder<'a, 'tcx> {
@@ -320,7 +318,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
                 // See the notes for `ExprKind::Array` in `as_rvalue` and for
                 // `ExprKind::Borrow` above.
                 let is_union = adt_def.is_union();
-                let active_field_index = is_union.then(|| fields[0].name.index());
+                let active_field_index = is_union.then(|| fields[0].name);
 
                 let scope = this.local_scope();
 
@@ -344,10 +342,9 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
                     })
                     .collect();
 
-                let field_names: Vec<_> =
-                    (0..adt_def.variant(variant_index).fields.len()).map(FieldIdx::new).collect();
+                let field_names = adt_def.variant(variant_index).fields.indices();
 
-                let fields: Vec<_> = if let Some(FruInfo { base, field_types }) = base {
+                let fields = if let Some(FruInfo { base, field_types }) = base {
                     let place_builder =
                         unpack!(block = this.as_place_builder(block, &this.thir[*base]));
 
@@ -364,7 +361,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
                         })
                         .collect()
                 } else {
-                    field_names.iter().filter_map(|n| fields_map.get(n).cloned()).collect()
+                    field_names.filter_map(|n| fields_map.get(&n).cloned()).collect()
                 };
 
                 let inferred_ty = expr.ty;
diff --git a/compiler/rustc_mir_build/src/build/mod.rs b/compiler/rustc_mir_build/src/build/mod.rs
index e87e38fd04c..ac645cce5c6 100644
--- a/compiler/rustc_mir_build/src/build/mod.rs
+++ b/compiler/rustc_mir_build/src/build/mod.rs
@@ -11,7 +11,7 @@ use rustc_hir as hir;
 use rustc_hir::def::DefKind;
 use rustc_hir::def_id::{DefId, LocalDefId};
 use rustc_hir::{GeneratorKind, Node};
-use rustc_index::vec::{Idx, IndexVec};
+use rustc_index::vec::{Idx, IndexSlice, IndexVec};
 use rustc_infer::infer::{InferCtxt, TyCtxtInferExt};
 use rustc_middle::hir::place::PlaceBase as HirPlaceBase;
 use rustc_middle::middle::region;
@@ -821,7 +821,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
     fn args_and_body(
         &mut self,
         mut block: BasicBlock,
-        arguments: &IndexVec<ParamId, Param<'tcx>>,
+        arguments: &IndexSlice<ParamId, Param<'tcx>>,
         argument_scope: region::Scope,
         expr: &Expr<'tcx>,
     ) -> BlockAnd<()> {
diff --git a/compiler/rustc_mir_build/src/build/scope.rs b/compiler/rustc_mir_build/src/build/scope.rs
index 4bc2c0ca791..25af221bf36 100644
--- a/compiler/rustc_mir_build/src/build/scope.rs
+++ b/compiler/rustc_mir_build/src/build/scope.rs
@@ -86,7 +86,7 @@ use std::mem;
 use crate::build::{BlockAnd, BlockAndExtension, BlockFrame, Builder, CFG};
 use rustc_data_structures::fx::FxHashMap;
 use rustc_hir::HirId;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::{IndexSlice, IndexVec};
 use rustc_middle::middle::region;
 use rustc_middle::mir::*;
 use rustc_middle::thir::{Expr, LintLevel};
@@ -360,7 +360,7 @@ impl DropTree {
     fn link_blocks<'tcx>(
         &self,
         cfg: &mut CFG<'tcx>,
-        blocks: &IndexVec<DropIdx, Option<BasicBlock>>,
+        blocks: &IndexSlice<DropIdx, Option<BasicBlock>>,
     ) {
         for (drop_idx, drop_data) in self.drops.iter_enumerated().rev() {
             let Some(block) = blocks[drop_idx] else { continue };
diff --git a/compiler/rustc_mir_build/src/thir/pattern/deconstruct_pat.rs b/compiler/rustc_mir_build/src/thir/pattern/deconstruct_pat.rs
index e619e095496..29f7cae3d3f 100644
--- a/compiler/rustc_mir_build/src/thir/pattern/deconstruct_pat.rs
+++ b/compiler/rustc_mir_build/src/thir/pattern/deconstruct_pat.rs
@@ -1154,8 +1154,9 @@ impl<'p, 'tcx> Fields<'p, 'tcx> {
     fn wildcards_from_tys(
         cx: &MatchCheckCtxt<'p, 'tcx>,
         tys: impl IntoIterator<Item = Ty<'tcx>>,
+        span: Span,
     ) -> Self {
-        Fields::from_iter(cx, tys.into_iter().map(DeconstructedPat::wildcard))
+        Fields::from_iter(cx, tys.into_iter().map(|ty| DeconstructedPat::wildcard(ty, span)))
     }
 
     // In the cases of either a `#[non_exhaustive]` field list or a non-public field, we hide
@@ -1191,18 +1192,18 @@ impl<'p, 'tcx> Fields<'p, 'tcx> {
     pub(super) fn wildcards(pcx: &PatCtxt<'_, 'p, 'tcx>, constructor: &Constructor<'tcx>) -> Self {
         let ret = match constructor {
             Single | Variant(_) => match pcx.ty.kind() {
-                ty::Tuple(fs) => Fields::wildcards_from_tys(pcx.cx, fs.iter()),
-                ty::Ref(_, rty, _) => Fields::wildcards_from_tys(pcx.cx, once(*rty)),
+                ty::Tuple(fs) => Fields::wildcards_from_tys(pcx.cx, fs.iter(), pcx.span),
+                ty::Ref(_, rty, _) => Fields::wildcards_from_tys(pcx.cx, once(*rty), pcx.span),
                 ty::Adt(adt, substs) => {
                     if adt.is_box() {
                         // The only legal patterns of type `Box` (outside `std`) are `_` and box
                         // patterns. If we're here we can assume this is a box pattern.
-                        Fields::wildcards_from_tys(pcx.cx, once(substs.type_at(0)))
+                        Fields::wildcards_from_tys(pcx.cx, once(substs.type_at(0)), pcx.span)
                     } else {
                         let variant = &adt.variant(constructor.variant_index_for_adt(*adt));
                         let tys = Fields::list_variant_nonhidden_fields(pcx.cx, pcx.ty, variant)
                             .map(|(_, ty)| ty);
-                        Fields::wildcards_from_tys(pcx.cx, tys)
+                        Fields::wildcards_from_tys(pcx.cx, tys, pcx.span)
                     }
                 }
                 _ => bug!("Unexpected type for `Single` constructor: {:?}", pcx),
@@ -1210,7 +1211,7 @@ impl<'p, 'tcx> Fields<'p, 'tcx> {
             Slice(slice) => match *pcx.ty.kind() {
                 ty::Slice(ty) | ty::Array(ty, _) => {
                     let arity = slice.arity();
-                    Fields::wildcards_from_tys(pcx.cx, (0..arity).map(|_| ty))
+                    Fields::wildcards_from_tys(pcx.cx, (0..arity).map(|_| ty), pcx.span)
                 }
                 _ => bug!("bad slice pattern {:?} {:?}", constructor, pcx),
             },
@@ -1251,8 +1252,8 @@ pub(crate) struct DeconstructedPat<'p, 'tcx> {
 }
 
 impl<'p, 'tcx> DeconstructedPat<'p, 'tcx> {
-    pub(super) fn wildcard(ty: Ty<'tcx>) -> Self {
-        Self::new(Wildcard, Fields::empty(), ty, DUMMY_SP)
+    pub(super) fn wildcard(ty: Ty<'tcx>, span: Span) -> Self {
+        Self::new(Wildcard, Fields::empty(), ty, span)
     }
 
     pub(super) fn new(
@@ -1269,7 +1270,7 @@ impl<'p, 'tcx> DeconstructedPat<'p, 'tcx> {
     /// `Some(_)`.
     pub(super) fn wild_from_ctor(pcx: &PatCtxt<'_, 'p, 'tcx>, ctor: Constructor<'tcx>) -> Self {
         let fields = Fields::wildcards(pcx, &ctor);
-        DeconstructedPat::new(ctor, fields, pcx.ty, DUMMY_SP)
+        DeconstructedPat::new(ctor, fields, pcx.ty, pcx.span)
     }
 
     /// Clone this value. This method emphasizes that cloning loses reachability information and
@@ -1298,7 +1299,7 @@ impl<'p, 'tcx> DeconstructedPat<'p, 'tcx> {
                     ty::Tuple(fs) => {
                         ctor = Single;
                         let mut wilds: SmallVec<[_; 2]> =
-                            fs.iter().map(DeconstructedPat::wildcard).collect();
+                            fs.iter().map(|ty| DeconstructedPat::wildcard(ty, pat.span)).collect();
                         for pat in subpatterns {
                             wilds[pat.field.index()] = mkpat(&pat.pattern);
                         }
@@ -1317,11 +1318,11 @@ impl<'p, 'tcx> DeconstructedPat<'p, 'tcx> {
                         // normally or through box-patterns. We'll have to figure out a proper
                         // solution when we introduce generalized deref patterns. Also need to
                         // prevent mixing of those two options.
-                        let pat = subpatterns.into_iter().find(|pat| pat.field.index() == 0);
-                        let pat = if let Some(pat) = pat {
+                        let pattern = subpatterns.into_iter().find(|pat| pat.field.index() == 0);
+                        let pat = if let Some(pat) = pattern {
                             mkpat(&pat.pattern)
                         } else {
-                            DeconstructedPat::wildcard(substs.type_at(0))
+                            DeconstructedPat::wildcard(substs.type_at(0), pat.span)
                         };
                         ctor = Single;
                         fields = Fields::singleton(cx, pat);
@@ -1343,7 +1344,7 @@ impl<'p, 'tcx> DeconstructedPat<'p, 'tcx> {
                                 ty
                             });
                         let mut wilds: SmallVec<[_; 2]> =
-                            tys.map(DeconstructedPat::wildcard).collect();
+                            tys.map(|ty| DeconstructedPat::wildcard(ty, pat.span)).collect();
                         for pat in subpatterns {
                             if let Some(i) = field_id_to_id[pat.field.index()] {
                                 wilds[i] = mkpat(&pat.pattern);
@@ -1566,8 +1567,10 @@ impl<'p, 'tcx> DeconstructedPat<'p, 'tcx> {
                         };
                         let prefix = &self.fields.fields[..prefix];
                         let suffix = &self.fields.fields[self_slice.arity() - suffix..];
-                        let wildcard: &_ =
-                            pcx.cx.pattern_arena.alloc(DeconstructedPat::wildcard(inner_ty));
+                        let wildcard: &_ = pcx
+                            .cx
+                            .pattern_arena
+                            .alloc(DeconstructedPat::wildcard(inner_ty, pcx.span));
                         let extra_wildcards = other_slice.arity() - self_slice.arity();
                         let extra_wildcards = (0..extra_wildcards).map(|_| wildcard);
                         prefix.iter().chain(extra_wildcards).chain(suffix).collect()
diff --git a/compiler/rustc_mir_build/src/thir/pattern/usefulness.rs b/compiler/rustc_mir_build/src/thir/pattern/usefulness.rs
index be66d0d4765..a324c3a6228 100644
--- a/compiler/rustc_mir_build/src/thir/pattern/usefulness.rs
+++ b/compiler/rustc_mir_build/src/thir/pattern/usefulness.rs
@@ -300,6 +300,7 @@ use rustc_arena::TypedArena;
 use rustc_data_structures::stack::ensure_sufficient_stack;
 use rustc_hir::def_id::DefId;
 use rustc_hir::HirId;
+use rustc_hir::Node;
 use rustc_middle::ty::{self, Ty, TyCtxt};
 use rustc_session::lint::builtin::NON_EXHAUSTIVE_OMITTED_PATTERNS;
 use rustc_span::{Span, DUMMY_SP};
@@ -603,7 +604,7 @@ impl<'p, 'tcx> Usefulness<'p, 'tcx> {
                     let new_patterns = if pcx.is_non_exhaustive {
                         // Here we don't want the user to try to list all variants, we want them to add
                         // a wildcard, so we only suggest that.
-                        vec![DeconstructedPat::wildcard(pcx.ty)]
+                        vec![DeconstructedPat::wildcard(pcx.ty, pcx.span)]
                     } else {
                         let mut split_wildcard = SplitWildcard::new(pcx);
                         split_wildcard.split(pcx, matrix.heads().map(DeconstructedPat::ctor));
@@ -630,7 +631,7 @@ impl<'p, 'tcx> Usefulness<'p, 'tcx> {
                             .collect();
 
                         if hide_variant_show_wild {
-                            new.push(DeconstructedPat::wildcard(pcx.ty));
+                            new.push(DeconstructedPat::wildcard(pcx.ty, pcx.span));
                         }
 
                         new
@@ -733,7 +734,7 @@ impl<'p, 'tcx> Witness<'p, 'tcx> {
             let arity = ctor.arity(pcx);
             let pats = self.0.drain((len - arity)..).rev();
             let fields = Fields::from_iter(pcx.cx, pats);
-            DeconstructedPat::new(ctor.clone(), fields, pcx.ty, DUMMY_SP)
+            DeconstructedPat::new(ctor.clone(), fields, pcx.ty, pcx.span)
         };
 
         self.0.push(pat);
@@ -867,6 +868,8 @@ fn is_useful<'p, 'tcx>(
                     &ctor,
                     Constructor::Missing { nonexhaustive_enum_missing_real_variants: true }
                 )
+                // We don't want to lint patterns which are function arguments or locals
+                && !matches!(cx.tcx.hir().find_parent(hir_id), Some(Node::Param(_)|Node::Local(_)))
             {
                 let patterns = {
                     let mut split_wildcard = SplitWildcard::new(pcx);
@@ -974,7 +977,7 @@ pub(crate) fn compute_match_usefulness<'p, 'tcx>(
         })
         .collect();
 
-    let wild_pattern = cx.pattern_arena.alloc(DeconstructedPat::wildcard(scrut_ty));
+    let wild_pattern = cx.pattern_arena.alloc(DeconstructedPat::wildcard(scrut_ty, DUMMY_SP));
     let v = PatStack::from_pattern(wild_pattern);
     let usefulness = is_useful(cx, &matrix, &v, FakeExtraWildcard, scrut_hir_id, false, true);
     let non_exhaustiveness_witnesses = match usefulness {
diff --git a/compiler/rustc_mir_dataflow/src/elaborate_drops.rs b/compiler/rustc_mir_dataflow/src/elaborate_drops.rs
index c8661bbcc44..7ef3d41ac48 100644
--- a/compiler/rustc_mir_dataflow/src/elaborate_drops.rs
+++ b/compiler/rustc_mir_dataflow/src/elaborate_drops.rs
@@ -729,23 +729,59 @@ where
         let tcx = self.tcx();
 
         if let Some(size) = opt_size {
-            let fields: Vec<(Place<'tcx>, Option<D::Path>)> = (0..size)
-                .map(|i| {
-                    (
-                        tcx.mk_place_elem(
-                            self.place,
-                            ProjectionElem::ConstantIndex {
-                                offset: i,
-                                min_length: size,
-                                from_end: false,
-                            },
-                        ),
-                        self.elaborator.array_subpath(self.path, i, size),
-                    )
-                })
-                .collect();
-
-            if fields.iter().any(|(_, path)| path.is_some()) {
+            enum ProjectionKind<Path> {
+                Drop(std::ops::Range<u64>),
+                Keep(u64, Path),
+            }
+            // Previously, we'd make a projection for every element in the array and create a drop
+            // ladder if any `array_subpath` was `Some`, i.e. moving out with an array pattern.
+            // This caused huge memory usage when generating the drops for large arrays, so we instead
+            // record the *subslices* which are dropped and the *indexes* which are kept
+            let mut drop_ranges = vec![];
+            let mut dropping = true;
+            let mut start = 0;
+            for i in 0..size {
+                let path = self.elaborator.array_subpath(self.path, i, size);
+                if dropping && path.is_some() {
+                    drop_ranges.push(ProjectionKind::Drop(start..i));
+                    dropping = false;
+                } else if !dropping && path.is_none() {
+                    dropping = true;
+                    start = i;
+                }
+                if let Some(path) = path {
+                    drop_ranges.push(ProjectionKind::Keep(i, path));
+                }
+            }
+            if !drop_ranges.is_empty() {
+                if dropping {
+                    drop_ranges.push(ProjectionKind::Drop(start..size));
+                }
+                let fields = drop_ranges
+                    .iter()
+                    .rev()
+                    .map(|p| {
+                        let (project, path) = match p {
+                            ProjectionKind::Drop(r) => (
+                                ProjectionElem::Subslice {
+                                    from: r.start,
+                                    to: r.end,
+                                    from_end: false,
+                                },
+                                None,
+                            ),
+                            &ProjectionKind::Keep(offset, path) => (
+                                ProjectionElem::ConstantIndex {
+                                    offset,
+                                    min_length: size,
+                                    from_end: false,
+                                },
+                                Some(path),
+                            ),
+                        };
+                        (tcx.mk_place_elem(self.place, project), path)
+                    })
+                    .collect::<Vec<_>>();
                 let (succ, unwind) = self.drop_ladder_bottom();
                 return self.drop_ladder(fields, succ, unwind).0;
             }
@@ -824,7 +860,7 @@ where
                 let size = size.try_eval_target_usize(self.tcx(), self.elaborator.param_env());
                 self.open_drop_for_array(*ety, size)
             }
-            ty::Slice(ety) => self.open_drop_for_array(*ety, None),
+            ty::Slice(ety) => self.drop_loop_pair(*ety),
 
             _ => span_bug!(self.source_info.span, "open drop from non-ADT `{:?}`", ty),
         }
diff --git a/compiler/rustc_mir_dataflow/src/move_paths/mod.rs b/compiler/rustc_mir_dataflow/src/move_paths/mod.rs
index 5f22a418de8..257a42cddc8 100644
--- a/compiler/rustc_mir_dataflow/src/move_paths/mod.rs
+++ b/compiler/rustc_mir_dataflow/src/move_paths/mod.rs
@@ -1,6 +1,6 @@
 use crate::move_paths::builder::MoveDat;
 use rustc_data_structures::fx::FxHashMap;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::{IndexSlice, IndexVec};
 use rustc_middle::mir::*;
 use rustc_middle::ty::{ParamEnv, Ty, TyCtxt};
 use rustc_span::Span;
@@ -64,7 +64,7 @@ impl<'tcx> MovePath<'tcx> {
     /// Returns an iterator over the parents of `self`.
     pub fn parents<'a>(
         &self,
-        move_paths: &'a IndexVec<MovePathIndex, MovePath<'tcx>>,
+        move_paths: &'a IndexSlice<MovePathIndex, MovePath<'tcx>>,
     ) -> impl 'a + Iterator<Item = (MovePathIndex, &'a MovePath<'tcx>)> {
         let first = self.parent.map(|mpi| (mpi, &move_paths[mpi]));
         MovePathLinearIter {
@@ -78,7 +78,7 @@ impl<'tcx> MovePath<'tcx> {
     /// Returns an iterator over the immediate children of `self`.
     pub fn children<'a>(
         &self,
-        move_paths: &'a IndexVec<MovePathIndex, MovePath<'tcx>>,
+        move_paths: &'a IndexSlice<MovePathIndex, MovePath<'tcx>>,
     ) -> impl 'a + Iterator<Item = (MovePathIndex, &'a MovePath<'tcx>)> {
         let first = self.first_child.map(|mpi| (mpi, &move_paths[mpi]));
         MovePathLinearIter {
@@ -95,7 +95,7 @@ impl<'tcx> MovePath<'tcx> {
     /// `f` will **not** be called on `self`.
     pub fn find_descendant(
         &self,
-        move_paths: &IndexVec<MovePathIndex, MovePath<'_>>,
+        move_paths: &IndexSlice<MovePathIndex, MovePath<'_>>,
         f: impl Fn(MovePathIndex) -> bool,
     ) -> Option<MovePathIndex> {
         let mut todo = if let Some(child) = self.first_child {
diff --git a/compiler/rustc_mir_dataflow/src/value_analysis.rs b/compiler/rustc_mir_dataflow/src/value_analysis.rs
index 63e553bec53..33a15a8d224 100644
--- a/compiler/rustc_mir_dataflow/src/value_analysis.rs
+++ b/compiler/rustc_mir_dataflow/src/value_analysis.rs
@@ -36,7 +36,7 @@ use std::fmt::{Debug, Formatter};
 
 use rustc_data_structures::fx::FxHashMap;
 use rustc_index::bit_set::BitSet;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::{IndexSlice, IndexVec};
 use rustc_middle::mir::visit::{MutatingUseContext, PlaceContext, Visitor};
 use rustc_middle::mir::*;
 use rustc_middle::ty::{self, Ty, TyCtxt};
@@ -1028,8 +1028,8 @@ where
 fn debug_with_context_rec<V: Debug + Eq>(
     place: PlaceIndex,
     place_str: &str,
-    new: &IndexVec<ValueIndex, V>,
-    old: Option<&IndexVec<ValueIndex, V>>,
+    new: &IndexSlice<ValueIndex, V>,
+    old: Option<&IndexSlice<ValueIndex, V>>,
     map: &Map,
     f: &mut Formatter<'_>,
 ) -> std::fmt::Result {
@@ -1069,8 +1069,8 @@ fn debug_with_context_rec<V: Debug + Eq>(
 }
 
 fn debug_with_context<V: Debug + Eq>(
-    new: &IndexVec<ValueIndex, V>,
-    old: Option<&IndexVec<ValueIndex, V>>,
+    new: &IndexSlice<ValueIndex, V>,
+    old: Option<&IndexSlice<ValueIndex, V>>,
     map: &Map,
     f: &mut Formatter<'_>,
 ) -> std::fmt::Result {
diff --git a/compiler/rustc_mir_transform/src/check_alignment.rs b/compiler/rustc_mir_transform/src/check_alignment.rs
index 996416ef22e..5815887e5bb 100644
--- a/compiler/rustc_mir_transform/src/check_alignment.rs
+++ b/compiler/rustc_mir_transform/src/check_alignment.rs
@@ -128,7 +128,7 @@ fn split_block(
 
 fn insert_alignment_check<'tcx>(
     tcx: TyCtxt<'tcx>,
-    local_decls: &mut LocalDecls<'tcx>,
+    local_decls: &mut IndexVec<Local, LocalDecl<'tcx>>,
     block_data: &mut BasicBlockData<'tcx>,
     pointer: Place<'tcx>,
     pointee_ty: Ty<'tcx>,
diff --git a/compiler/rustc_mir_transform/src/const_prop.rs b/compiler/rustc_mir_transform/src/const_prop.rs
index e7075d5e791..ac55948e61b 100644
--- a/compiler/rustc_mir_transform/src/const_prop.rs
+++ b/compiler/rustc_mir_transform/src/const_prop.rs
@@ -7,7 +7,7 @@ use rustc_const_eval::const_eval::CheckAlignment;
 use rustc_data_structures::fx::FxHashSet;
 use rustc_hir::def::DefKind;
 use rustc_index::bit_set::BitSet;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::{IndexSlice, IndexVec};
 use rustc_middle::mir::visit::{
     MutVisitor, MutatingUseContext, NonMutatingUseContext, PlaceContext, Visitor,
 };
@@ -127,7 +127,7 @@ impl<'tcx> MirPass<'tcx> for ConstProp {
 
         let dummy_body = &Body::new(
             body.source,
-            (*body.basic_blocks).clone(),
+            (*body.basic_blocks).to_owned(),
             body.source_scopes.clone(),
             body.local_decls.clone(),
             Default::default(),
@@ -319,7 +319,7 @@ struct ConstPropagator<'mir, 'tcx> {
     ecx: InterpCx<'mir, 'tcx, ConstPropMachine<'mir, 'tcx>>,
     tcx: TyCtxt<'tcx>,
     param_env: ParamEnv<'tcx>,
-    local_decls: &'mir IndexVec<Local, LocalDecl<'tcx>>,
+    local_decls: &'mir IndexSlice<Local, LocalDecl<'tcx>>,
 }
 
 impl<'tcx> LayoutOfHelpers<'tcx> for ConstPropagator<'_, 'tcx> {
diff --git a/compiler/rustc_mir_transform/src/const_prop_lint.rs b/compiler/rustc_mir_transform/src/const_prop_lint.rs
index 60401b05492..176027b3b93 100644
--- a/compiler/rustc_mir_transform/src/const_prop_lint.rs
+++ b/compiler/rustc_mir_transform/src/const_prop_lint.rs
@@ -9,7 +9,7 @@ use rustc_const_eval::interpret::{
 };
 use rustc_hir::def::DefKind;
 use rustc_hir::HirId;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::IndexSlice;
 use rustc_middle::mir::visit::Visitor;
 use rustc_middle::mir::*;
 use rustc_middle::ty::layout::{LayoutError, LayoutOf, LayoutOfHelpers, TyAndLayout};
@@ -103,7 +103,7 @@ impl<'tcx> MirLint<'tcx> for ConstProp {
 
         let dummy_body = &Body::new(
             body.source,
-            (*body.basic_blocks).clone(),
+            (*body.basic_blocks).to_owned(),
             body.source_scopes.clone(),
             body.local_decls.clone(),
             Default::default(),
@@ -130,8 +130,8 @@ struct ConstPropagator<'mir, 'tcx> {
     ecx: InterpCx<'mir, 'tcx, ConstPropMachine<'mir, 'tcx>>,
     tcx: TyCtxt<'tcx>,
     param_env: ParamEnv<'tcx>,
-    source_scopes: &'mir IndexVec<SourceScope, SourceScopeData<'tcx>>,
-    local_decls: &'mir IndexVec<Local, LocalDecl<'tcx>>,
+    source_scopes: &'mir IndexSlice<SourceScope, SourceScopeData<'tcx>>,
+    local_decls: &'mir IndexSlice<Local, LocalDecl<'tcx>>,
     // Because we have `MutVisitor` we can't obtain the `SourceInfo` from a `Location`. So we store
     // the last known `SourceInfo` here and just keep revisiting it.
     source_info: Option<SourceInfo>,
@@ -284,7 +284,15 @@ impl<'mir, 'tcx> ConstPropagator<'mir, 'tcx> {
             return None;
         }
 
-        self.use_ecx(source_info, |this| this.ecx.eval_mir_constant(&c.literal, Some(c.span), None))
+        // Normalization needed b/c const prop lint runs in
+        // `mir_drops_elaborated_and_const_checked`, which happens before
+        // optimized MIR. Only after optimizing the MIR can we guarantee
+        // that the `RevealAll` pass has happened and that the body's consts
+        // are normalized, so any call to resolve before that needs to be
+        // manually normalized.
+        let val = self.tcx.try_normalize_erasing_regions(self.param_env, c.literal).ok()?;
+
+        self.use_ecx(source_info, |this| this.ecx.eval_mir_constant(&val, Some(c.span), None))
     }
 
     /// Returns the value, if any, of evaluating `place`.
diff --git a/compiler/rustc_mir_transform/src/copy_prop.rs b/compiler/rustc_mir_transform/src/copy_prop.rs
index f27beb64a14..c155048c98b 100644
--- a/compiler/rustc_mir_transform/src/copy_prop.rs
+++ b/compiler/rustc_mir_transform/src/copy_prop.rs
@@ -1,5 +1,5 @@
 use rustc_index::bit_set::BitSet;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::IndexSlice;
 use rustc_middle::mir::visit::*;
 use rustc_middle::mir::*;
 use rustc_middle::ty::TyCtxt;
@@ -102,7 +102,7 @@ struct Replacer<'a, 'tcx> {
     fully_moved: BitSet<Local>,
     storage_to_remove: BitSet<Local>,
     borrowed_locals: BitSet<Local>,
-    copy_classes: &'a IndexVec<Local, Local>,
+    copy_classes: &'a IndexSlice<Local, Local>,
 }
 
 impl<'tcx> MutVisitor<'tcx> for Replacer<'_, 'tcx> {
diff --git a/compiler/rustc_mir_transform/src/coverage/graph.rs b/compiler/rustc_mir_transform/src/coverage/graph.rs
index 49028ca4e5e..6a73f2a6578 100644
--- a/compiler/rustc_mir_transform/src/coverage/graph.rs
+++ b/compiler/rustc_mir_transform/src/coverage/graph.rs
@@ -5,7 +5,7 @@ use rustc_data_structures::fx::FxHashMap;
 use rustc_data_structures::graph::dominators::{self, Dominators};
 use rustc_data_structures::graph::{self, GraphSuccessors, WithNumNodes, WithStartNode};
 use rustc_index::bit_set::BitSet;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::{IndexSlice, IndexVec};
 use rustc_middle::mir::coverage::*;
 use rustc_middle::mir::{self, BasicBlock, BasicBlockData, Terminator, TerminatorKind};
 
@@ -37,8 +37,7 @@ impl CoverageGraph {
         // `SwitchInt` to have multiple targets to the same destination `BasicBlock`, so
         // de-duplication is required. This is done without reordering the successors.
 
-        let bcbs_len = bcbs.len();
-        let mut seen = IndexVec::from_elem_n(false, bcbs_len);
+        let mut seen = IndexVec::from_elem(false, &bcbs);
         let successors = IndexVec::from_fn_n(
             |bcb| {
                 for b in seen.iter_mut() {
@@ -60,7 +59,7 @@ impl CoverageGraph {
             bcbs.len(),
         );
 
-        let mut predecessors = IndexVec::from_elem_n(Vec::new(), bcbs.len());
+        let mut predecessors = IndexVec::from_elem(Vec::new(), &bcbs);
         for (bcb, bcb_successors) in successors.iter_enumerated() {
             for &successor in bcb_successors {
                 predecessors[successor].push(bcb);
@@ -176,10 +175,10 @@ impl CoverageGraph {
 
     fn add_basic_coverage_block(
         bcbs: &mut IndexVec<BasicCoverageBlock, BasicCoverageBlockData>,
-        bb_to_bcb: &mut IndexVec<BasicBlock, Option<BasicCoverageBlock>>,
+        bb_to_bcb: &mut IndexSlice<BasicBlock, Option<BasicCoverageBlock>>,
         basic_blocks: Vec<BasicBlock>,
     ) {
-        let bcb = BasicCoverageBlock::from_usize(bcbs.len());
+        let bcb = bcbs.next_index();
         for &bb in basic_blocks.iter() {
             bb_to_bcb[bb] = Some(bcb);
         }
diff --git a/compiler/rustc_mir_transform/src/generator.rs b/compiler/rustc_mir_transform/src/generator.rs
index 50538248d91..af6422c7246 100644
--- a/compiler/rustc_mir_transform/src/generator.rs
+++ b/compiler/rustc_mir_transform/src/generator.rs
@@ -274,7 +274,7 @@ impl<'tcx> TransformVisitor<'tcx> {
             statements.push(Statement {
                 kind: StatementKind::Assign(Box::new((
                     Place::return_place(),
-                    Rvalue::Aggregate(Box::new(kind), vec![]),
+                    Rvalue::Aggregate(Box::new(kind), IndexVec::new()),
                 ))),
                 source_info,
             });
@@ -287,7 +287,7 @@ impl<'tcx> TransformVisitor<'tcx> {
         statements.push(Statement {
             kind: StatementKind::Assign(Box::new((
                 Place::return_place(),
-                Rvalue::Aggregate(Box::new(kind), vec![val]),
+                Rvalue::Aggregate(Box::new(kind), IndexVec::from_iter([val])),
             ))),
             source_info,
         });
diff --git a/compiler/rustc_mir_transform/src/lower_slice_len.rs b/compiler/rustc_mir_transform/src/lower_slice_len.rs
index c6e7468aab4..101fae2f08c 100644
--- a/compiler/rustc_mir_transform/src/lower_slice_len.rs
+++ b/compiler/rustc_mir_transform/src/lower_slice_len.rs
@@ -3,7 +3,7 @@
 
 use crate::MirPass;
 use rustc_hir::def_id::DefId;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::IndexSlice;
 use rustc_middle::mir::*;
 use rustc_middle::ty::{self, TyCtxt};
 
@@ -42,7 +42,7 @@ struct SliceLenPatchInformation<'tcx> {
 fn lower_slice_len_call<'tcx>(
     tcx: TyCtxt<'tcx>,
     block: &mut BasicBlockData<'tcx>,
-    local_decls: &IndexVec<Local, LocalDecl<'tcx>>,
+    local_decls: &IndexSlice<Local, LocalDecl<'tcx>>,
     slice_len_fn_item_def_id: DefId,
 ) {
     let mut patch_found: Option<SliceLenPatchInformation<'_>> = None;
diff --git a/compiler/rustc_mir_transform/src/simplify.rs b/compiler/rustc_mir_transform/src/simplify.rs
index 5bdb8ab6bfc..c79e1cf0805 100644
--- a/compiler/rustc_mir_transform/src/simplify.rs
+++ b/compiler/rustc_mir_transform/src/simplify.rs
@@ -29,7 +29,7 @@
 
 use crate::MirPass;
 use rustc_data_structures::fx::{FxHashSet, FxIndexSet};
-use rustc_index::vec::{Idx, IndexVec};
+use rustc_index::vec::{Idx, IndexSlice, IndexVec};
 use rustc_middle::mir::coverage::*;
 use rustc_middle::mir::visit::{MutVisitor, MutatingUseContext, PlaceContext, Visitor};
 use rustc_middle::mir::*;
@@ -67,7 +67,7 @@ impl<'tcx> MirPass<'tcx> for SimplifyCfg {
 }
 
 pub struct CfgSimplifier<'a, 'tcx> {
-    basic_blocks: &'a mut IndexVec<BasicBlock, BasicBlockData<'tcx>>,
+    basic_blocks: &'a mut IndexSlice<BasicBlock, BasicBlockData<'tcx>>,
     pred_count: IndexVec<BasicBlock, u32>,
 }
 
@@ -369,8 +369,8 @@ pub fn remove_dead_blocks<'tcx>(tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>) {
 /// instances in a single body, so the strategy described above is applied to
 /// coverage counters from each instance individually.
 fn save_unreachable_coverage(
-    basic_blocks: &mut IndexVec<BasicBlock, BasicBlockData<'_>>,
-    source_scopes: &IndexVec<SourceScope, SourceScopeData<'_>>,
+    basic_blocks: &mut IndexSlice<BasicBlock, BasicBlockData<'_>>,
+    source_scopes: &IndexSlice<SourceScope, SourceScopeData<'_>>,
     first_dead_block: usize,
 ) {
     // Identify instances that still have some live coverage counters left.
@@ -489,7 +489,7 @@ fn make_local_map<V>(
     local_decls: &mut IndexVec<Local, V>,
     used_locals: &UsedLocals,
 ) -> IndexVec<Local, Option<Local>> {
-    let mut map: IndexVec<Local, Option<Local>> = IndexVec::from_elem(None, &*local_decls);
+    let mut map: IndexVec<Local, Option<Local>> = IndexVec::from_elem(None, local_decls);
     let mut used = Local::new(0);
 
     for alive_index in local_decls.indices() {
diff --git a/compiler/rustc_mir_transform/src/ssa.rs b/compiler/rustc_mir_transform/src/ssa.rs
index 73168652f8f..be026402dd5 100644
--- a/compiler/rustc_mir_transform/src/ssa.rs
+++ b/compiler/rustc_mir_transform/src/ssa.rs
@@ -1,7 +1,7 @@
 use either::Either;
 use rustc_data_structures::graph::dominators::Dominators;
 use rustc_index::bit_set::BitSet;
-use rustc_index::vec::IndexVec;
+use rustc_index::vec::{IndexSlice, IndexVec};
 use rustc_middle::middle::resolve_bound_vars::Set1;
 use rustc_middle::mir::visit::*;
 use rustc_middle::mir::*;
@@ -135,7 +135,7 @@ impl SsaLocals {
     ///   _d => _a // transitively through _c
     ///
     /// Exception: we do not see through the return place, as it cannot be substituted.
-    pub fn copy_classes(&self) -> &IndexVec<Local, Local> {
+    pub fn copy_classes(&self) -> &IndexSlice<Local, Local> {
         &self.copy_classes
     }
 
diff --git a/compiler/rustc_monomorphize/src/collector.rs b/compiler/rustc_monomorphize/src/collector.rs
index d34fa39352f..f41edff8513 100644
--- a/compiler/rustc_monomorphize/src/collector.rs
+++ b/compiler/rustc_monomorphize/src/collector.rs
@@ -651,8 +651,8 @@ fn check_type_length_limit<'tcx>(tcx: TyCtxt<'tcx>, instance: Instance<'tcx>) {
         let (shrunk, written_to_path) = shrunk_instance_name(tcx, &instance);
         let span = tcx.def_span(instance.def_id());
         let mut path = PathBuf::new();
-        let was_written = if written_to_path.is_some() {
-            path = written_to_path.unwrap();
+        let was_written = if let Some(path2) = written_to_path {
+            path = path2;
             Some(())
         } else {
             None
diff --git a/compiler/rustc_monomorphize/src/partitioning/default.rs b/compiler/rustc_monomorphize/src/partitioning/default.rs
index 50bcc3336d6..482b78d42e3 100644
--- a/compiler/rustc_monomorphize/src/partitioning/default.rs
+++ b/compiler/rustc_monomorphize/src/partitioning/default.rs
@@ -89,10 +89,7 @@ impl<'tcx> Partitioner<'tcx> for DefaultPartitioning {
         }
 
         PreInliningPartitioning {
-            codegen_units: codegen_units
-                .into_iter()
-                .map(|(_, codegen_unit)| codegen_unit)
-                .collect(),
+            codegen_units: codegen_units.into_values().map(|codegen_unit| codegen_unit).collect(),
             roots,
             internalization_candidates,
         }
diff --git a/compiler/rustc_parse/messages.ftl b/compiler/rustc_parse/messages.ftl
index 96765c296e7..e21bbd0217b 100644
--- a/compiler/rustc_parse/messages.ftl
+++ b/compiler/rustc_parse/messages.ftl
@@ -734,3 +734,7 @@ parse_unknown_start_of_token = unknown start of token: {$escaped}
 
 parse_box_syntax_removed = `box_syntax` has been removed
     .suggestion = use `Box::new()` instead
+
+parse_bad_return_type_notation_output =
+    return type not allowed with return type notation
+    .suggestion = remove the return type
diff --git a/compiler/rustc_parse/src/errors.rs b/compiler/rustc_parse/src/errors.rs
index a9d116012ae..aead216b61c 100644
--- a/compiler/rustc_parse/src/errors.rs
+++ b/compiler/rustc_parse/src/errors.rs
@@ -2316,3 +2316,11 @@ pub struct BoxSyntaxRemoved<'a> {
     pub span: Span,
     pub code: &'a str,
 }
+
+#[derive(Diagnostic)]
+#[diag(parse_bad_return_type_notation_output)]
+pub(crate) struct BadReturnTypeNotationOutput {
+    #[primary_span]
+    #[suggestion(code = "", applicability = "maybe-incorrect")]
+    pub span: Span,
+}
diff --git a/compiler/rustc_parse/src/parser/diagnostics.rs b/compiler/rustc_parse/src/parser/diagnostics.rs
index 9544afd3d6d..5210b8fe69d 100644
--- a/compiler/rustc_parse/src/parser/diagnostics.rs
+++ b/compiler/rustc_parse/src/parser/diagnostics.rs
@@ -989,8 +989,7 @@ impl<'a> Parser<'a> {
                     }
                     if self.token.kind == token::OpenDelim(Delimiter::Parenthesis) {
                         // Recover from bad turbofish: `foo.collect::Vec<_>()`.
-                        let args = AngleBracketedArgs { args, span }.into();
-                        segment.args = args;
+                        segment.args = Some(AngleBracketedArgs { args, span }.into());
 
                         self.sess.emit_err(GenericParamsWithoutAngleBrackets {
                             span,
diff --git a/compiler/rustc_parse/src/parser/item.rs b/compiler/rustc_parse/src/parser/item.rs
index ae8fe90e9d6..6422b8ac1ba 100644
--- a/compiler/rustc_parse/src/parser/item.rs
+++ b/compiler/rustc_parse/src/parser/item.rs
@@ -3,6 +3,7 @@ use crate::errors;
 use super::diagnostics::{dummy_arg, ConsumeClosingDelim};
 use super::ty::{AllowPlus, RecoverQPath, RecoverReturnSign};
 use super::{AttrWrapper, FollowedByType, ForceCollect, Parser, PathStyle, TrailingToken};
+use ast::StaticItem;
 use rustc_ast::ast::*;
 use rustc_ast::ptr::P;
 use rustc_ast::token::{self, Delimiter, TokenKind};
@@ -227,7 +228,7 @@ impl<'a> Parser<'a> {
             self.bump(); // `static`
             let m = self.parse_mutability();
             let (ident, ty, expr) = self.parse_item_global(Some(m))?;
-            (ident, ItemKind::Static(ty, m, expr))
+            (ident, ItemKind::Static(Box::new(StaticItem { ty, mutability: m, expr })))
         } else if let Const::Yes(const_span) = self.parse_constness(Case::Sensitive) {
             // CONST ITEM
             if self.token.is_keyword(kw::Impl) {
@@ -236,7 +237,7 @@ impl<'a> Parser<'a> {
             } else {
                 self.recover_const_mut(const_span);
                 let (ident, ty, expr) = self.parse_item_global(None)?;
-                (ident, ItemKind::Const(def_(), ty, expr))
+                (ident, ItemKind::Const(Box::new(ConstItem { defaultness: def_(), ty, expr })))
             }
         } else if self.check_keyword(kw::Trait) || self.check_auto_or_unsafe_trait_item() {
             // TRAIT ITEM
@@ -862,9 +863,13 @@ impl<'a> Parser<'a> {
                 let kind = match AssocItemKind::try_from(kind) {
                     Ok(kind) => kind,
                     Err(kind) => match kind {
-                        ItemKind::Static(a, _, b) => {
+                        ItemKind::Static(box StaticItem { ty, mutability: _, expr }) => {
                             self.sess.emit_err(errors::AssociatedStaticItemNotAllowed { span });
-                            AssocItemKind::Const(Defaultness::Final, a, b)
+                            AssocItemKind::Const(Box::new(ConstItem {
+                                defaultness: Defaultness::Final,
+                                ty,
+                                expr,
+                            }))
                         }
                         _ => return self.error_bad_item_kind(span, &kind, "`trait`s or `impl`s"),
                     },
@@ -1114,12 +1119,12 @@ impl<'a> Parser<'a> {
                 let kind = match ForeignItemKind::try_from(kind) {
                     Ok(kind) => kind,
                     Err(kind) => match kind {
-                        ItemKind::Const(_, a, b) => {
+                        ItemKind::Const(box ConstItem { ty, expr, .. }) => {
                             self.sess.emit_err(errors::ExternItemCannotBeConst {
                                 ident_span: ident.span,
                                 const_span: span.with_hi(ident.span.lo()),
                             });
-                            ForeignItemKind::Static(a, Mutability::Not, b)
+                            ForeignItemKind::Static(ty, Mutability::Not, expr)
                         }
                         _ => return self.error_bad_item_kind(span, &kind, "`extern` blocks"),
                     },
diff --git a/compiler/rustc_parse/src/parser/path.rs b/compiler/rustc_parse/src/parser/path.rs
index b50d2984a4e..f1c9f0109f8 100644
--- a/compiler/rustc_parse/src/parser/path.rs
+++ b/compiler/rustc_parse/src/parser/path.rs
@@ -1,6 +1,6 @@
 use super::ty::{AllowPlus, RecoverQPath, RecoverReturnSign};
 use super::{Parser, Restrictions, TokenType};
-use crate::maybe_whole;
+use crate::{errors, maybe_whole};
 use rustc_ast::ptr::P;
 use rustc_ast::token::{self, Delimiter, Token, TokenKind};
 use rustc_ast::{
@@ -290,6 +290,25 @@ impl<'a> Parser<'a> {
                     })?;
                     let span = lo.to(self.prev_token.span);
                     AngleBracketedArgs { args, span }.into()
+                } else if self.token.kind == token::OpenDelim(Delimiter::Parenthesis)
+                    // FIXME(return_type_notation): Could also recover `...` here.
+                    && self.look_ahead(1, |tok| tok.kind == token::DotDot)
+                {
+                    let lo = self.token.span;
+                    self.bump();
+                    self.bump();
+                    self.expect(&token::CloseDelim(Delimiter::Parenthesis))?;
+                    let span = lo.to(self.prev_token.span);
+                    self.sess.gated_spans.gate(sym::return_type_notation, span);
+
+                    if self.eat_noexpect(&token::RArrow) {
+                        let lo = self.prev_token.span;
+                        let ty = self.parse_ty()?;
+                        self.sess
+                            .emit_err(errors::BadReturnTypeNotationOutput { span: lo.to(ty.span) });
+                    }
+
+                    P(GenericArgs::ReturnTypeNotation(span))
                 } else {
                     // `(T, U) -> R`
                     let (inputs, _) = self.parse_paren_comma_seq(|p| p.parse_ty())?;
@@ -300,7 +319,7 @@ impl<'a> Parser<'a> {
                     ParenthesizedArgs { span, inputs, inputs_span, output }.into()
                 };
 
-                PathSegment { ident, args, id: ast::DUMMY_NODE_ID }
+                PathSegment { ident, args: Some(args), id: ast::DUMMY_NODE_ID }
             } else {
                 // Generic arguments are not found.
                 PathSegment::from_ident(ident)
@@ -550,7 +569,13 @@ impl<'a> Parser<'a> {
 
                     // Gate associated type bounds, e.g., `Iterator<Item: Ord>`.
                     if let AssocConstraintKind::Bound { .. } = kind {
-                        self.sess.gated_spans.gate(sym::associated_type_bounds, span);
+                        if gen_args.as_ref().map_or(false, |args| {
+                            matches!(args, GenericArgs::ReturnTypeNotation(..))
+                        }) {
+                            // This is already gated in `parse_path_segment`
+                        } else {
+                            self.sess.gated_spans.gate(sym::associated_type_bounds, span);
+                        }
                     }
                     let constraint =
                         AssocConstraint { id: ast::DUMMY_NODE_ID, ident, gen_args, kind, span };
diff --git a/compiler/rustc_parse/src/parser/ty.rs b/compiler/rustc_parse/src/parser/ty.rs
index 3d9d2cc62e3..400c8dbe9bc 100644
--- a/compiler/rustc_parse/src/parser/ty.rs
+++ b/compiler/rustc_parse/src/parser/ty.rs
@@ -1059,8 +1059,11 @@ impl<'a> Parser<'a> {
             output,
         }
         .into();
-        *fn_path_segment =
-            ast::PathSegment { ident: fn_path_segment.ident, args, id: ast::DUMMY_NODE_ID };
+        *fn_path_segment = ast::PathSegment {
+            ident: fn_path_segment.ident,
+            args: Some(args),
+            id: ast::DUMMY_NODE_ID,
+        };
 
         // Convert parsed `<'a>` in `Fn<'a>` into `for<'a>`.
         let mut generic_params = lifetimes
diff --git a/compiler/rustc_passes/messages.ftl b/compiler/rustc_passes/messages.ftl
index d063b51c8b8..b354dca7cc4 100644
--- a/compiler/rustc_passes/messages.ftl
+++ b/compiler/rustc_passes/messages.ftl
@@ -148,9 +148,6 @@ passes_doc_test_unknown =
 passes_doc_test_takes_list =
     `#[doc(test(...)]` takes a list of attributes
 
-passes_doc_primitive =
-    `doc(primitive)` should never have been stable
-
 passes_doc_cfg_hide_takes_list =
     `#[doc(cfg_hide(...)]` takes a list of attributes
 
diff --git a/compiler/rustc_passes/src/check_attr.rs b/compiler/rustc_passes/src/check_attr.rs
index 1c459edabb8..80a93da2b45 100644
--- a/compiler/rustc_passes/src/check_attr.rs
+++ b/compiler/rustc_passes/src/check_attr.rs
@@ -1109,17 +1109,6 @@ impl CheckAttrVisitor<'_> {
                             }
                         }
 
-                        sym::primitive => {
-                            if !self.tcx.features().rustdoc_internals {
-                                self.tcx.emit_spanned_lint(
-                                    INVALID_DOC_ATTRIBUTES,
-                                    hir_id,
-                                    i_meta.span,
-                                    errors::DocPrimitive,
-                                );
-                            }
-                        }
-
                         _ => {
                             let path = rustc_ast_pretty::pprust::path_to_string(&i_meta.path);
                             if i_meta.has_name(sym::spotlight) {
diff --git a/compiler/rustc_passes/src/entry.rs b/compiler/rustc_passes/src/entry.rs
index f3e683f4b3a..8c3dff23b27 100644
--- a/compiler/rustc_passes/src/entry.rs
+++ b/compiler/rustc_passes/src/entry.rs
@@ -206,7 +206,7 @@ fn no_main_err(tcx: TyCtxt<'_>, visitor: &EntryContext<'_>) {
     // The file may be empty, which leads to the diagnostic machinery not emitting this
     // note. This is a relatively simple way to detect that case and emit a span-less
     // note instead.
-    let file_empty = !tcx.sess.source_map().lookup_line(sp.hi()).is_ok();
+    let file_empty = tcx.sess.source_map().lookup_line(sp.hi()).is_err();
 
     tcx.sess.emit_err(NoMainErr {
         sp,
diff --git a/compiler/rustc_passes/src/errors.rs b/compiler/rustc_passes/src/errors.rs
index 1b0cd5d91ab..139ba8c9677 100644
--- a/compiler/rustc_passes/src/errors.rs
+++ b/compiler/rustc_passes/src/errors.rs
@@ -289,10 +289,6 @@ pub struct DocTestTakesList;
 pub struct DocCfgHideTakesList;
 
 #[derive(LintDiagnostic)]
-#[diag(passes_doc_primitive)]
-pub struct DocPrimitive;
-
-#[derive(LintDiagnostic)]
 #[diag(passes_doc_test_unknown_any)]
 pub struct DocTestUnknownAny {
     pub path: String,
diff --git a/compiler/rustc_passes/src/hir_stats.rs b/compiler/rustc_passes/src/hir_stats.rs
index 47e032758f2..ce44f709f3b 100644
--- a/compiler/rustc_passes/src/hir_stats.rs
+++ b/compiler/rustc_passes/src/hir_stats.rs
@@ -666,7 +666,7 @@ impl<'v> ast_visit::Visitor<'v> for StatCollector<'v> {
     fn visit_generic_args(&mut self, g: &'v ast::GenericArgs) {
         record_variants!(
             (self, g, g, Id::None, ast, GenericArgs, GenericArgs),
-            [AngleBracketed, Parenthesized]
+            [AngleBracketed, Parenthesized, ReturnTypeNotation]
         );
         ast_visit::walk_generic_args(self, g)
     }
diff --git a/compiler/rustc_resolve/src/build_reduced_graph.rs b/compiler/rustc_resolve/src/build_reduced_graph.rs
index 19ccb3a6484..49c41470a15 100644
--- a/compiler/rustc_resolve/src/build_reduced_graph.rs
+++ b/compiler/rustc_resolve/src/build_reduced_graph.rs
@@ -688,8 +688,8 @@ impl<'a, 'b, 'tcx> BuildReducedGraphVisitor<'a, 'b, 'tcx> {
             }
 
             // These items live in the value namespace.
-            ItemKind::Static(_, mt, _) => {
-                let res = Res::Def(DefKind::Static(mt), def_id);
+            ItemKind::Static(box ast::StaticItem { mutability, .. }) => {
+                let res = Res::Def(DefKind::Static(mutability), def_id);
                 self.r.define(parent, ident, ValueNS, (res, vis, sp, expansion));
             }
             ItemKind::Const(..) => {
diff --git a/compiler/rustc_resolve/src/diagnostics.rs b/compiler/rustc_resolve/src/diagnostics.rs
index 44a3d4e628e..e69a9d0aeca 100644
--- a/compiler/rustc_resolve/src/diagnostics.rs
+++ b/compiler/rustc_resolve/src/diagnostics.rs
@@ -1669,8 +1669,8 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
     ) -> Option<Symbol> {
         let mut candidates = self
             .extern_prelude
-            .iter()
-            .map(|(ident, _)| ident.name)
+            .keys()
+            .map(|ident| ident.name)
             .chain(
                 self.module_map
                     .iter()
@@ -2007,7 +2007,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
         // 1) some consistent ordering for emitted diagnostics, and
         // 2) `std` suggestions before `core` suggestions.
         let mut extern_crate_names =
-            self.extern_prelude.iter().map(|(ident, _)| ident.name).collect::<Vec<_>>();
+            self.extern_prelude.keys().map(|ident| ident.name).collect::<Vec<_>>();
         extern_crate_names.sort_by(|a, b| b.as_str().partial_cmp(a.as_str()).unwrap());
 
         for name in extern_crate_names.into_iter() {
diff --git a/compiler/rustc_resolve/src/ident.rs b/compiler/rustc_resolve/src/ident.rs
index 52f0b65fad6..7ff440e49aa 100644
--- a/compiler/rustc_resolve/src/ident.rs
+++ b/compiler/rustc_resolve/src/ident.rs
@@ -389,7 +389,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
             }
         }
 
-        assert!(force || !finalize.is_some()); // `finalize` implies `force`
+        assert!(force || finalize.is_none()); // `finalize` implies `force`
 
         // Make sure `self`, `super` etc produce an error when passed to here.
         if orig_ident.is_path_segment_keyword() {
@@ -869,17 +869,19 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
         let resolution =
             self.resolution(module, key).try_borrow_mut().map_err(|_| (Determined, Weak::No))?; // This happens when there is a cycle of imports.
 
-        if let Some(Finalize { path_span, report_private, .. }) = finalize {
-            // If the primary binding is unusable, search further and return the shadowed glob
-            // binding if it exists. What we really want here is having two separate scopes in
-            // a module - one for non-globs and one for globs, but until that's done use this
-            // hack to avoid inconsistent resolution ICEs during import validation.
-            let binding = [resolution.binding, resolution.shadowed_glob].into_iter().find_map(
-                |binding| match (binding, ignore_binding) {
+        // If the primary binding is unusable, search further and return the shadowed glob
+        // binding if it exists. What we really want here is having two separate scopes in
+        // a module - one for non-globs and one for globs, but until that's done use this
+        // hack to avoid inconsistent resolution ICEs during import validation.
+        let binding =
+            [resolution.binding, resolution.shadowed_glob].into_iter().find_map(|binding| {
+                match (binding, ignore_binding) {
                     (Some(binding), Some(ignored)) if ptr::eq(binding, ignored) => None,
                     _ => binding,
-                },
-            );
+                }
+            });
+
+        if let Some(Finalize { path_span, report_private, .. }) = finalize {
             let Some(binding) = binding else {
                 return Err((Determined, Weak::No));
             };
@@ -927,15 +929,12 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
         }
 
         let check_usable = |this: &mut Self, binding: &'a NameBinding<'a>| {
-            if let Some(ignored) = ignore_binding && ptr::eq(binding, ignored) {
-                return Err((Determined, Weak::No));
-            }
             let usable = this.is_accessible_from(binding.vis, parent_scope.module);
             if usable { Ok(binding) } else { Err((Determined, Weak::No)) }
         };
 
         // Items and single imports are not shadowable, if we have one, then it's determined.
-        if let Some(binding) = resolution.binding {
+        if let Some(binding) = binding {
             if !binding.is_glob_import() {
                 return check_usable(self, binding);
             }
@@ -952,6 +951,14 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
             if !self.is_accessible_from(import_vis, parent_scope.module) {
                 continue;
             }
+            if let Some(ignored) = ignore_binding &&
+                let NameBindingKind::Import { import, .. } = ignored.kind &&
+                ptr::eq(import, &**single_import) {
+                // Ignore not just the binding itself, but if it has a shadowed_glob,
+                // ignore that, too, because this loop is supposed to only process
+                // named imports.
+                continue;
+            }
             let Some(module) = single_import.imported_module.get() else {
                 return Err((Undetermined, Weak::No));
             };
@@ -989,7 +996,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
         // and prohibit access to macro-expanded `macro_export` macros instead (unless restricted
         // shadowing is enabled, see `macro_expanded_macro_export_errors`).
         let unexpanded_macros = !module.unexpanded_invocations.borrow().is_empty();
-        if let Some(binding) = resolution.binding {
+        if let Some(binding) = binding {
             if !unexpanded_macros || ns == MacroNS || restricted_shadowing {
                 return check_usable(self, binding);
             } else {
diff --git a/compiler/rustc_resolve/src/late.rs b/compiler/rustc_resolve/src/late.rs
index 4ca54bab31a..19f46d45af6 100644
--- a/compiler/rustc_resolve/src/late.rs
+++ b/compiler/rustc_resolve/src/late.rs
@@ -1110,6 +1110,7 @@ impl<'a: 'ast, 'ast, 'tcx> Visitor<'ast> for LateResolutionVisitor<'a, '_, 'ast,
                         }
                     }
                 }
+                GenericArgs::ReturnTypeNotation(_span) => {}
             }
         }
     }
@@ -2345,7 +2346,8 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> {
                 });
             }
 
-            ItemKind::Static(ref ty, _, ref expr) | ItemKind::Const(_, ref ty, ref expr) => {
+            ItemKind::Static(box ast::StaticItem { ref ty, ref expr, .. })
+            | ItemKind::Const(box ast::ConstItem { ref ty, ref expr, .. }) => {
                 self.with_static_rib(|this| {
                     this.with_lifetime_rib(LifetimeRibKind::Elided(LifetimeRes::Static), |this| {
                         this.visit_ty(ty);
@@ -2420,8 +2422,7 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> {
                     .iter()
                     .rfind(|r| matches!(r.kind, ItemRibKind(_)))
                     .expect("associated item outside of an item");
-                seen_bindings
-                    .extend(parent_rib.bindings.iter().map(|(ident, _)| (*ident, ident.span)));
+                seen_bindings.extend(parent_rib.bindings.keys().map(|ident| (*ident, ident.span)));
             };
             add_bindings_for_ns(ValueNS);
             add_bindings_for_ns(TypeNS);
@@ -2624,11 +2625,11 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> {
         for item in trait_items {
             self.resolve_doc_links(&item.attrs, MaybeExported::Ok(item.id));
             match &item.kind {
-                AssocItemKind::Const(_, ty, default) => {
+                AssocItemKind::Const(box ast::ConstItem { ty, expr, .. }) => {
                     self.visit_ty(ty);
                     // Only impose the restrictions of `ConstRibKind` for an
                     // actual constant expression in a provided default.
-                    if let Some(expr) = default {
+                    if let Some(expr) = expr {
                         // We allow arbitrary const expressions inside of associated consts,
                         // even if they are potentially not const evaluatable.
                         //
@@ -2799,7 +2800,7 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> {
         use crate::ResolutionError::*;
         self.resolve_doc_links(&item.attrs, MaybeExported::ImplItem(trait_id.ok_or(&item.vis)));
         match &item.kind {
-            AssocItemKind::Const(_, ty, default) => {
+            AssocItemKind::Const(box ast::ConstItem { ty, expr, .. }) => {
                 debug!("resolve_implementation AssocItemKind::Const");
                 // If this is a trait impl, ensure the const
                 // exists in trait
@@ -2814,7 +2815,7 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> {
                 );
 
                 self.visit_ty(ty);
-                if let Some(expr) = default {
+                if let Some(expr) = expr {
                     // We allow arbitrary const expressions inside of associated consts,
                     // even if they are potentially not const evaluatable.
                     //
diff --git a/compiler/rustc_resolve/src/lib.rs b/compiler/rustc_resolve/src/lib.rs
index 0e84432a5b4..99fad22d4a1 100644
--- a/compiler/rustc_resolve/src/lib.rs
+++ b/compiler/rustc_resolve/src/lib.rs
@@ -312,6 +312,7 @@ impl<'a> From<&'a ast::PathSegment> for Segment {
                     (args.span, found_lifetimes)
                 }
                 GenericArgs::Parenthesized(args) => (args.span, true),
+                GenericArgs::ReturnTypeNotation(span) => (*span, false),
             }
         } else {
             (DUMMY_SP, false)
diff --git a/compiler/rustc_resolve/src/rustdoc.rs b/compiler/rustc_resolve/src/rustdoc.rs
index 44a27bbc175..9eae99be2e9 100644
--- a/compiler/rustc_resolve/src/rustdoc.rs
+++ b/compiler/rustc_resolve/src/rustdoc.rs
@@ -339,12 +339,14 @@ pub fn inner_docs(attrs: &[ast::Attribute]) -> bool {
     attrs.iter().find(|a| a.doc_str().is_some()).map_or(true, |a| a.style == ast::AttrStyle::Inner)
 }
 
-/// Has `#[doc(primitive)]` or `#[doc(keyword)]`.
+/// Has `#[rustc_doc_primitive]` or `#[doc(keyword)]`.
 pub fn has_primitive_or_keyword_docs(attrs: &[ast::Attribute]) -> bool {
     for attr in attrs {
-        if attr.has_name(sym::doc) && let Some(items) = attr.meta_item_list() {
+        if attr.has_name(sym::rustc_doc_primitive) {
+            return true;
+        } else if attr.has_name(sym::doc) && let Some(items) = attr.meta_item_list() {
             for item in items {
-                if item.has_name(sym::primitive) || item.has_name(sym::keyword) {
+                if item.has_name(sym::keyword) {
                     return true;
                 }
             }
diff --git a/compiler/rustc_session/src/config.rs b/compiler/rustc_session/src/config.rs
index 485c3f55462..1d8fedb8bd7 100644
--- a/compiler/rustc_session/src/config.rs
+++ b/compiler/rustc_session/src/config.rs
@@ -260,6 +260,8 @@ pub enum SymbolManglingVersion {
 #[derive(Clone, Copy, Debug, PartialEq, Hash)]
 pub enum DebugInfo {
     None,
+    LineDirectivesOnly,
+    LineTablesOnly,
     Limited,
     Full,
 }
@@ -1979,11 +1981,7 @@ fn parse_opt_level(
     }
 }
 
-fn select_debuginfo(
-    matches: &getopts::Matches,
-    cg: &CodegenOptions,
-    error_format: ErrorOutputType,
-) -> DebugInfo {
+fn select_debuginfo(matches: &getopts::Matches, cg: &CodegenOptions) -> DebugInfo {
     let max_g = matches.opt_positions("g").into_iter().max();
     let max_c = matches
         .opt_strs_pos("C")
@@ -1993,24 +1991,7 @@ fn select_debuginfo(
             if let Some("debuginfo") = s.split('=').next() { Some(i) } else { None }
         })
         .max();
-    if max_g > max_c {
-        DebugInfo::Full
-    } else {
-        match cg.debuginfo {
-            0 => DebugInfo::None,
-            1 => DebugInfo::Limited,
-            2 => DebugInfo::Full,
-            arg => {
-                early_error(
-                    error_format,
-                    &format!(
-                        "debug info level needs to be between \
-                         0-2 (instead was `{arg}`)"
-                    ),
-                );
-            }
-        }
-    }
+    if max_g > max_c { DebugInfo::Full } else { cg.debuginfo }
 }
 
 pub(crate) fn parse_assert_incr_state(
@@ -2498,7 +2479,7 @@ pub fn build_session_options(matches: &getopts::Matches) -> Options {
     // to use them interchangeably. See the note above (regarding `-O` and `-C opt-level`)
     // for more details.
     let debug_assertions = cg.debug_assertions.unwrap_or(opt_level == OptLevel::No);
-    let debuginfo = select_debuginfo(matches, &cg, error_format);
+    let debuginfo = select_debuginfo(matches, &cg);
 
     let mut search_paths = vec![];
     for s in &matches.opt_strs("L") {
diff --git a/compiler/rustc_session/src/options.rs b/compiler/rustc_session/src/options.rs
index c75af48e80a..631dd0a2146 100644
--- a/compiler/rustc_session/src/options.rs
+++ b/compiler/rustc_session/src/options.rs
@@ -377,6 +377,7 @@ mod desc {
     pub const parse_cfguard: &str =
         "either a boolean (`yes`, `no`, `on`, `off`, etc), `checks`, or `nochecks`";
     pub const parse_cfprotection: &str = "`none`|`no`|`n` (default), `branch`, `return`, or `full`|`yes`|`y` (equivalent to `branch` and `return`)";
+    pub const parse_debuginfo: &str = "either an integer (0, 1, 2), `none`, `line-directives-only`, `line-tables-only`, `limited`, or `full`";
     pub const parse_strip: &str = "either `none`, `debuginfo`, or `symbols`";
     pub const parse_linker_flavor: &str = ::rustc_target::spec::LinkerFlavorCli::one_of();
     pub const parse_optimization_fuel: &str = "crate=integer";
@@ -767,6 +768,18 @@ mod parse {
         true
     }
 
+    pub(crate) fn parse_debuginfo(slot: &mut DebugInfo, v: Option<&str>) -> bool {
+        match v {
+            Some("0") | Some("none") => *slot = DebugInfo::None,
+            Some("line-directives-only") => *slot = DebugInfo::LineDirectivesOnly,
+            Some("line-tables-only") => *slot = DebugInfo::LineTablesOnly,
+            Some("1") | Some("limited") => *slot = DebugInfo::Limited,
+            Some("2") | Some("full") => *slot = DebugInfo::Full,
+            _ => return false,
+        }
+        true
+    }
+
     pub(crate) fn parse_linker_flavor(slot: &mut Option<LinkerFlavorCli>, v: Option<&str>) -> bool {
         match v.and_then(LinkerFlavorCli::from_str) {
             Some(lf) => *slot = Some(lf),
@@ -911,7 +924,7 @@ mod parse {
         let mut seen_instruction_threshold = false;
         let mut seen_skip_entry = false;
         let mut seen_skip_exit = false;
-        for option in v.into_iter().map(|v| v.split(',')).flatten() {
+        for option in v.into_iter().flat_map(|v| v.split(',')) {
             match option {
                 "always" if !seen_always && !seen_never => {
                     options.always = true;
@@ -1217,9 +1230,9 @@ options! {
         "use Windows Control Flow Guard (default: no)"),
     debug_assertions: Option<bool> = (None, parse_opt_bool, [TRACKED],
         "explicitly enable the `cfg(debug_assertions)` directive"),
-    debuginfo: usize = (0, parse_number, [TRACKED],
-        "debug info emission level (0 = no debug info, 1 = line tables only, \
-        2 = full debug info with variable and type information; default: 0)"),
+    debuginfo: DebugInfo = (DebugInfo::None, parse_debuginfo, [TRACKED],
+        "debug info emission level (0-2, none, line-directives-only, \
+        line-tables-only, limited, or full; default: 0)"),
     default_linker_libraries: bool = (false, parse_bool, [UNTRACKED],
         "allow the linker to link its default libraries (default: no)"),
     embed_bitcode: bool = (true, parse_bool, [TRACKED],
diff --git a/compiler/rustc_span/src/hygiene.rs b/compiler/rustc_span/src/hygiene.rs
index d727aba6de5..0bb42a3a71f 100644
--- a/compiler/rustc_span/src/hygiene.rs
+++ b/compiler/rustc_span/src/hygiene.rs
@@ -109,7 +109,7 @@ fn assert_default_hashing_controls<CTX: HashStableContext>(ctx: &CTX, msg: &str)
         // This is the case for instance when building a hash for name mangling.
         // Such configuration must not be used for metadata.
         HashingControls { hash_spans }
-            if hash_spans == !ctx.unstable_opts_incremental_ignore_spans() => {}
+            if hash_spans != ctx.unstable_opts_incremental_ignore_spans() => {}
         other => panic!("Attempted hashing of {msg} with non-default HashingControls: {other:?}"),
     }
 }
diff --git a/compiler/rustc_span/src/lib.rs b/compiler/rustc_span/src/lib.rs
index 02cffc762be..e14760aa018 100644
--- a/compiler/rustc_span/src/lib.rs
+++ b/compiler/rustc_span/src/lib.rs
@@ -87,6 +87,14 @@ pub struct SessionGlobals {
     symbol_interner: symbol::Interner,
     span_interner: Lock<span_encoding::SpanInterner>,
     hygiene_data: Lock<hygiene::HygieneData>,
+
+    /// A reference to the source map in the `Session`. It's an `Option`
+    /// because it can't be initialized until `Session` is created, which
+    /// happens after `SessionGlobals`. `set_source_map` does the
+    /// initialization.
+    ///
+    /// This field should only be used in places where the `Session` is truly
+    /// not available, such as `<Span as Debug>::fmt`.
     source_map: Lock<Option<Lrc<SourceMap>>>,
 }
 
@@ -1013,16 +1021,9 @@ impl<D: Decoder> Decodable<D> for Span {
     }
 }
 
-/// Calls the provided closure, using the provided `SourceMap` to format
-/// any spans that are debug-printed during the closure's execution.
-///
-/// Normally, the global `TyCtxt` is used to retrieve the `SourceMap`
-/// (see `rustc_interface::callbacks::span_debug1`). However, some parts
-/// of the compiler (e.g. `rustc_parse`) may debug-print `Span`s before
-/// a `TyCtxt` is available. In this case, we fall back to
-/// the `SourceMap` provided to this function. If that is not available,
-/// we fall back to printing the raw `Span` field values.
-pub fn with_source_map<T, F: FnOnce() -> T>(source_map: Lrc<SourceMap>, f: F) -> T {
+/// Insert `source_map` into the session globals for the duration of the
+/// closure's execution.
+pub fn set_source_map<T, F: FnOnce() -> T>(source_map: Lrc<SourceMap>, f: F) -> T {
     with_session_globals(|session_globals| {
         *session_globals.source_map.borrow_mut() = Some(source_map);
     });
@@ -1041,6 +1042,8 @@ pub fn with_source_map<T, F: FnOnce() -> T>(source_map: Lrc<SourceMap>, f: F) ->
 
 impl fmt::Debug for Span {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        // Use the global `SourceMap` to print the span. If that's not
+        // available, fall back to printing the raw values.
         with_session_globals(|session_globals| {
             if let Some(source_map) = &*session_globals.source_map.borrow() {
                 write!(f, "{} ({:?})", source_map.span_to_diagnostic_string(*self), self.ctxt())
diff --git a/compiler/rustc_span/src/profiling.rs b/compiler/rustc_span/src/profiling.rs
index 0ab890b9f01..66e5369da3a 100644
--- a/compiler/rustc_span/src/profiling.rs
+++ b/compiler/rustc_span/src/profiling.rs
@@ -1,3 +1,5 @@
+use crate::source_map::SourceMap;
+
 use std::borrow::Borrow;
 
 use rustc_data_structures::profiling::EventArgRecorder;
@@ -11,25 +13,17 @@ pub trait SpannedEventArgRecorder {
     ///
     /// Note: when self-profiling with costly event arguments, at least one argument
     /// needs to be recorded. A panic will be triggered if that doesn't happen.
-    fn record_arg_with_span<A>(&mut self, event_arg: A, span: crate::Span)
+    fn record_arg_with_span<A>(&mut self, source_map: &SourceMap, event_arg: A, span: crate::Span)
     where
         A: Borrow<str> + Into<String>;
 }
 
 impl SpannedEventArgRecorder for EventArgRecorder<'_> {
-    fn record_arg_with_span<A>(&mut self, event_arg: A, span: crate::Span)
+    fn record_arg_with_span<A>(&mut self, source_map: &SourceMap, event_arg: A, span: crate::Span)
     where
         A: Borrow<str> + Into<String>,
     {
         self.record_arg(event_arg);
-
-        let span_arg = crate::with_session_globals(|session_globals| {
-            if let Some(source_map) = &*session_globals.source_map.borrow() {
-                source_map.span_to_embeddable_string(span)
-            } else {
-                format!("{span:?}")
-            }
-        });
-        self.record_arg(span_arg);
+        self.record_arg(source_map.span_to_embeddable_string(span));
     }
 }
diff --git a/compiler/rustc_span/src/symbol.rs b/compiler/rustc_span/src/symbol.rs
index d5dc1d0b315..0e55e81143d 100644
--- a/compiler/rustc_span/src/symbol.rs
+++ b/compiler/rustc_span/src/symbol.rs
@@ -1196,6 +1196,7 @@ symbols! {
         residual,
         result,
         return_position_impl_trait_in_trait,
+        return_type_notation,
         rhs,
         rintf32,
         rintf64,
@@ -1246,6 +1247,7 @@ symbols! {
         rustc_diagnostic_macros,
         rustc_dirty,
         rustc_do_not_const_check,
+        rustc_doc_primitive,
         rustc_dummy,
         rustc_dump_env_program_clauses,
         rustc_dump_program_clauses,
diff --git a/compiler/rustc_target/src/spec/armv4t_none_eabi.rs b/compiler/rustc_target/src/spec/armv4t_none_eabi.rs
index 28b109889e9..d0f988b278f 100644
--- a/compiler/rustc_target/src/spec/armv4t_none_eabi.rs
+++ b/compiler/rustc_target/src/spec/armv4t_none_eabi.rs
@@ -4,13 +4,6 @@
 //!
 //! Please ping @Lokathor if changes are needed.
 //!
-//! This target profile assumes that you have the ARM binutils in your path
-//! (specifically the linker, `arm-none-eabi-ld`). They can be obtained for free
-//! for all major OSes from the ARM developer's website, and they may also be
-//! available in your system's package manager. Unfortunately, the standard
-//! linker that Rust uses (`lld`) only supports as far back as `ARMv5TE`, so we
-//! must use the GNU `ld` linker.
-//!
 //! **Important:** This target profile **does not** specify a linker script. You
 //! just get the default link script when you build a binary for this target.
 //! The default link script is very likely wrong, so you should use
@@ -35,8 +28,8 @@ pub fn target() -> Target {
         data_layout: "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64".into(),
         options: TargetOptions {
             abi: "eabi".into(),
-            linker_flavor: LinkerFlavor::Gnu(Cc::No, Lld::No),
-            linker: Some("arm-none-eabi-ld".into()),
+            linker_flavor: LinkerFlavor::Gnu(Cc::No, Lld::Yes),
+            linker: Some("rust-lld".into()),
             asm_args: cvs!["-mthumb-interwork", "-march=armv4t", "-mlittle-endian",],
             // Force-enable 32-bit atomics, which allows the use of atomic load/store only.
             // The resulting atomics are ABI incompatible with atomics backed by libatomic.
diff --git a/compiler/rustc_target/src/spec/thumbv4t_none_eabi.rs b/compiler/rustc_target/src/spec/thumbv4t_none_eabi.rs
index e3734932f88..9c59bb9114e 100644
--- a/compiler/rustc_target/src/spec/thumbv4t_none_eabi.rs
+++ b/compiler/rustc_target/src/spec/thumbv4t_none_eabi.rs
@@ -4,19 +4,12 @@
 //!
 //! Please ping @Lokathor if changes are needed.
 //!
-//! This target profile assumes that you have the ARM binutils in your path
-//! (specifically the linker, `arm-none-eabi-ld`). They can be obtained for free
-//! for all major OSes from the ARM developer's website, and they may also be
-//! available in your system's package manager. Unfortunately, the standard
-//! linker that Rust uses (`lld`) only supports as far back as `ARMv5TE`, so we
-//! must use the GNU `ld` linker.
-//!
 //! **Important:** This target profile **does not** specify a linker script. You
 //! just get the default link script when you build a binary for this target.
 //! The default link script is very likely wrong, so you should use
 //! `-Clink-arg=-Tmy_script.ld` to override that with a correct linker script.
 
-use crate::spec::{cvs, Cc, FramePointer, LinkerFlavor, Lld};
+use crate::spec::{cvs, FramePointer};
 use crate::spec::{PanicStrategy, RelocModel, Target, TargetOptions};
 
 pub fn target() -> Target {
@@ -36,8 +29,6 @@ pub fn target() -> Target {
         data_layout: "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64".into(),
         options: TargetOptions {
             abi: "eabi".into(),
-            linker_flavor: LinkerFlavor::Gnu(Cc::No, Lld::No),
-            linker: Some("arm-none-eabi-ld".into()),
 
             // extra args passed to the external assembler (assuming `arm-none-eabi-as`):
             // * activate t32/a32 interworking
diff --git a/compiler/rustc_trait_selection/src/traits/error_reporting/method_chain.rs b/compiler/rustc_trait_selection/src/traits/error_reporting/method_chain.rs
index 13607b9079a..7e1dba4ed26 100644
--- a/compiler/rustc_trait_selection/src/traits/error_reporting/method_chain.rs
+++ b/compiler/rustc_trait_selection/src/traits/error_reporting/method_chain.rs
@@ -21,10 +21,6 @@ impl<'a, 'tcx> TypeRelation<'tcx> for CollectAllMismatches<'a, 'tcx> {
         self.infcx.tcx
     }
 
-    fn intercrate(&self) -> bool {
-        false
-    }
-
     fn param_env(&self) -> ty::ParamEnv<'tcx> {
         self.param_env
     }
@@ -33,10 +29,6 @@ impl<'a, 'tcx> TypeRelation<'tcx> for CollectAllMismatches<'a, 'tcx> {
         true
     }
 
-    fn mark_ambiguous(&mut self) {
-        bug!()
-    }
-
     fn relate_with_variance<T: Relate<'tcx>>(
         &mut self,
         _: ty::Variance,
diff --git a/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs b/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs
index be0817472ea..fb75ec76729 100644
--- a/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs
+++ b/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs
@@ -3888,8 +3888,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
         if let Some(slice_ty) = candidate_impls
             .iter()
             .map(|trait_ref| trait_ref.trait_ref.self_ty())
-            .filter(|t| is_slice(*t))
-            .next()
+            .find(|t| is_slice(*t))
         {
             let msg = &format!("convert the array to a `{}` slice instead", slice_ty);
 
@@ -3936,7 +3935,7 @@ fn hint_missing_borrow<'tcx>(
     // This could be a variant constructor, for example.
     let Some(fn_decl) = found_node.fn_decl() else { return; };
 
-    let args = fn_decl.inputs.iter().map(|ty| ty);
+    let args = fn_decl.inputs.iter();
 
     fn get_deref_type_and_refs(mut ty: Ty<'_>) -> (Ty<'_>, Vec<hir::Mutability>) {
         let mut refs = vec![];
diff --git a/compiler/rustc_trait_selection/src/traits/outlives_bounds.rs b/compiler/rustc_trait_selection/src/traits/outlives_bounds.rs
index 6d2dc94845d..cff3d277a78 100644
--- a/compiler/rustc_trait_selection/src/traits/outlives_bounds.rs
+++ b/compiler/rustc_trait_selection/src/traits/outlives_bounds.rs
@@ -110,8 +110,6 @@ impl<'a, 'tcx: 'a> InferCtxtExt<'a, 'tcx> for InferCtxt<'tcx> {
         body_id: LocalDefId,
         tys: FxIndexSet<Ty<'tcx>>,
     ) -> Bounds<'a, 'tcx> {
-        tys.into_iter()
-            .map(move |ty| self.implied_outlives_bounds(param_env, body_id, ty))
-            .flatten()
+        tys.into_iter().flat_map(move |ty| self.implied_outlives_bounds(param_env, body_id, ty))
     }
 }
diff --git a/compiler/rustc_trait_selection/src/traits/select/candidate_assembly.rs b/compiler/rustc_trait_selection/src/traits/select/candidate_assembly.rs
index 47a351590b1..090312338e0 100644
--- a/compiler/rustc_trait_selection/src/traits/select/candidate_assembly.rs
+++ b/compiler/rustc_trait_selection/src/traits/select/candidate_assembly.rs
@@ -998,8 +998,14 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
             | ty::Alias(..)
             | ty::Param(..)
             | ty::Bound(..)
-            | ty::Error(_) => {}
-            ty::Infer(_) => {
+            | ty::Error(_)
+            | ty::Infer(
+                ty::InferTy::IntVar(_)
+                | ty::InferTy::FloatVar(_)
+                | ty::InferTy::FreshIntTy(_)
+                | ty::InferTy::FreshFloatTy(_),
+            ) => {}
+            ty::Infer(ty::InferTy::TyVar(_) | ty::InferTy::FreshTy(_)) => {
                 candidates.ambiguous = true;
             }
         }
diff --git a/compiler/rustc_trait_selection/src/traits/select/mod.rs b/compiler/rustc_trait_selection/src/traits/select/mod.rs
index 3ed3dd2d20d..b58e62536d6 100644
--- a/compiler/rustc_trait_selection/src/traits/select/mod.rs
+++ b/compiler/rustc_trait_selection/src/traits/select/mod.rs
@@ -177,14 +177,14 @@ struct TraitObligationStack<'prev, 'tcx> {
 }
 
 struct SelectionCandidateSet<'tcx> {
-    // A list of candidates that definitely apply to the current
-    // obligation (meaning: types unify).
+    /// A list of candidates that definitely apply to the current
+    /// obligation (meaning: types unify).
     vec: Vec<SelectionCandidate<'tcx>>,
 
-    // If `true`, then there were candidates that might or might
-    // not have applied, but we couldn't tell. This occurs when some
-    // of the input types are type variables, in which case there are
-    // various "builtin" rules that might or might not trigger.
+    /// If `true`, then there were candidates that might or might
+    /// not have applied, but we couldn't tell. This occurs when some
+    /// of the input types are type variables, in which case there are
+    /// various "builtin" rules that might or might not trigger.
     ambiguous: bool,
 }
 
diff --git a/compiler/rustc_traits/src/chalk/lowering.rs b/compiler/rustc_traits/src/chalk/lowering.rs
index 0e9bccba8d4..527f6013a15 100644
--- a/compiler/rustc_traits/src/chalk/lowering.rs
+++ b/compiler/rustc_traits/src/chalk/lowering.rs
@@ -909,8 +909,7 @@ pub(crate) fn collect_bound_vars<'tcx, T: TypeFoldable<TyCtxt<'tcx>>>(
             .or_else(|| bug!("Skipped bound var index: parameters={:?}", parameters));
     });
 
-    let binders =
-        chalk_ir::VariableKinds::from_iter(interner, parameters.into_iter().map(|(_, v)| v));
+    let binders = chalk_ir::VariableKinds::from_iter(interner, parameters.into_values());
 
     (new_ty, binders, named_parameters)
 }
diff --git a/compiler/rustc_ty_utils/src/layout.rs b/compiler/rustc_ty_utils/src/layout.rs
index 73f86f74d14..e8155520c9b 100644
--- a/compiler/rustc_ty_utils/src/layout.rs
+++ b/compiler/rustc_ty_utils/src/layout.rs
@@ -522,7 +522,7 @@ fn generator_saved_local_eligibility(
     use SavedLocalEligibility::*;
 
     let mut assignments: IndexVec<GeneratorSavedLocal, SavedLocalEligibility> =
-        IndexVec::from_elem_n(Unassigned, info.field_tys.len());
+        IndexVec::from_elem(Unassigned, &info.field_tys);
 
     // The saved locals not eligible for overlap. These will get
     // "promoted" to the prefix of our generator.
diff --git a/library/alloc/src/collections/binary_heap/mod.rs b/library/alloc/src/collections/binary_heap/mod.rs
index d0a87e3fb9f..bc86125c7c3 100644
--- a/library/alloc/src/collections/binary_heap/mod.rs
+++ b/library/alloc/src/collections/binary_heap/mod.rs
@@ -154,8 +154,6 @@ use crate::collections::TryReserveError;
 use crate::slice;
 use crate::vec::{self, AsVecIntoIter, Vec};
 
-use super::SpecExtend;
-
 #[cfg(test)]
 mod tests;
 
@@ -400,6 +398,17 @@ impl<T: fmt::Debug> fmt::Debug for BinaryHeap<T> {
     }
 }
 
+struct RebuildOnDrop<'a, T: Ord> {
+    heap: &'a mut BinaryHeap<T>,
+    rebuild_from: usize,
+}
+
+impl<'a, T: Ord> Drop for RebuildOnDrop<'a, T> {
+    fn drop(&mut self) {
+        self.heap.rebuild_tail(self.rebuild_from);
+    }
+}
+
 impl<T: Ord> BinaryHeap<T> {
     /// Creates an empty `BinaryHeap` as a max-heap.
     ///
@@ -837,7 +846,6 @@ impl<T: Ord> BinaryHeap<T> {
     /// Basic usage:
     ///
     /// ```
-    /// #![feature(binary_heap_retain)]
     /// use std::collections::BinaryHeap;
     ///
     /// let mut heap = BinaryHeap::from([-10, -5, 1, 2, 4, 13]);
@@ -846,35 +854,24 @@ impl<T: Ord> BinaryHeap<T> {
     ///
     /// assert_eq!(heap.into_sorted_vec(), [-10, 2, 4])
     /// ```
-    #[unstable(feature = "binary_heap_retain", issue = "71503")]
+    #[stable(feature = "binary_heap_retain", since = "CURRENT_RUSTC_VERSION")]
     pub fn retain<F>(&mut self, mut f: F)
     where
         F: FnMut(&T) -> bool,
     {
-        struct RebuildOnDrop<'a, T: Ord> {
-            heap: &'a mut BinaryHeap<T>,
-            first_removed: usize,
-        }
-
-        let mut guard = RebuildOnDrop { first_removed: self.len(), heap: self };
-
+        // rebuild_start will be updated to the first touched element below, and the rebuild will
+        // only be done for the tail.
+        let mut guard = RebuildOnDrop { rebuild_from: self.len(), heap: self };
         let mut i = 0;
+
         guard.heap.data.retain(|e| {
             let keep = f(e);
-            if !keep && i < guard.first_removed {
-                guard.first_removed = i;
+            if !keep && i < guard.rebuild_from {
+                guard.rebuild_from = i;
             }
             i += 1;
             keep
         });
-
-        impl<'a, T: Ord> Drop for RebuildOnDrop<'a, T> {
-            fn drop(&mut self) {
-                // data[..first_removed] is untouched, so we only need to
-                // rebuild the tail:
-                self.heap.rebuild_tail(self.first_removed);
-            }
-        }
     }
 }
 
@@ -1729,7 +1726,8 @@ impl<'a, T> IntoIterator for &'a BinaryHeap<T> {
 impl<T: Ord> Extend<T> for BinaryHeap<T> {
     #[inline]
     fn extend<I: IntoIterator<Item = T>>(&mut self, iter: I) {
-        <Self as SpecExtend<I>>::spec_extend(self, iter);
+        let guard = RebuildOnDrop { rebuild_from: self.len(), heap: self };
+        guard.heap.data.extend(iter);
     }
 
     #[inline]
@@ -1743,37 +1741,6 @@ impl<T: Ord> Extend<T> for BinaryHeap<T> {
     }
 }
 
-impl<T: Ord, I: IntoIterator<Item = T>> SpecExtend<I> for BinaryHeap<T> {
-    default fn spec_extend(&mut self, iter: I) {
-        self.extend_desugared(iter.into_iter());
-    }
-}
-
-impl<T: Ord> SpecExtend<Vec<T>> for BinaryHeap<T> {
-    fn spec_extend(&mut self, ref mut other: Vec<T>) {
-        let start = self.data.len();
-        self.data.append(other);
-        self.rebuild_tail(start);
-    }
-}
-
-impl<T: Ord> SpecExtend<BinaryHeap<T>> for BinaryHeap<T> {
-    fn spec_extend(&mut self, ref mut other: BinaryHeap<T>) {
-        self.append(other);
-    }
-}
-
-impl<T: Ord> BinaryHeap<T> {
-    fn extend_desugared<I: IntoIterator<Item = T>>(&mut self, iter: I) {
-        let iterator = iter.into_iter();
-        let (lower, _) = iterator.size_hint();
-
-        self.reserve(lower);
-
-        iterator.for_each(move |elem| self.push(elem));
-    }
-}
-
 #[stable(feature = "extend_ref", since = "1.2.0")]
 impl<'a, T: 'a + Ord + Copy> Extend<&'a T> for BinaryHeap<T> {
     fn extend<I: IntoIterator<Item = &'a T>>(&mut self, iter: I) {
diff --git a/library/alloc/tests/lib.rs b/library/alloc/tests/lib.rs
index cd5301ee77f..0667cd7bc07 100644
--- a/library/alloc/tests/lib.rs
+++ b/library/alloc/tests/lib.rs
@@ -24,7 +24,6 @@
 #![feature(binary_heap_into_iter_sorted)]
 #![feature(binary_heap_drain_sorted)]
 #![feature(slice_ptr_get)]
-#![feature(binary_heap_retain)]
 #![feature(binary_heap_as_slice)]
 #![feature(inplace_iteration)]
 #![feature(iter_advance_by)]
diff --git a/library/core/src/cell.rs b/library/core/src/cell.rs
index 63bce5d0ccd..d728dc03817 100644
--- a/library/core/src/cell.rs
+++ b/library/core/src/cell.rs
@@ -1816,7 +1816,7 @@ impl<T: ?Sized + fmt::Display> fmt::Display for RefMut<'_, T> {
 /// `UnsafeCell<T>` opts-out of the immutability guarantee for `&T`: a shared reference
 /// `&UnsafeCell<T>` may point to data that is being mutated. This is called "interior mutability".
 ///
-/// All other types that allow internal mutability, such as `Cell<T>` and `RefCell<T>`, internally
+/// All other types that allow internal mutability, such as [`Cell<T>`] and [`RefCell<T>`], internally
 /// use `UnsafeCell` to wrap their data.
 ///
 /// Note that only the immutability guarantee for shared references is affected by `UnsafeCell`. The
diff --git a/library/core/src/cell/lazy.rs b/library/core/src/cell/lazy.rs
index 64a6ce51b2e..44adcfa1a94 100644
--- a/library/core/src/cell/lazy.rs
+++ b/library/core/src/cell/lazy.rs
@@ -1,6 +1,13 @@
-use crate::cell::{Cell, OnceCell};
-use crate::fmt;
 use crate::ops::Deref;
+use crate::{fmt, mem};
+
+use super::UnsafeCell;
+
+enum State<T, F> {
+    Uninit(F),
+    Init(T),
+    Poisoned,
+}
 
 /// A value which is initialized on the first access.
 ///
@@ -31,8 +38,7 @@ use crate::ops::Deref;
 /// ```
 #[unstable(feature = "lazy_cell", issue = "109736")]
 pub struct LazyCell<T, F = fn() -> T> {
-    cell: OnceCell<T>,
-    init: Cell<Option<F>>,
+    state: UnsafeCell<State<T, F>>,
 }
 
 impl<T, F: FnOnce() -> T> LazyCell<T, F> {
@@ -53,8 +59,8 @@ impl<T, F: FnOnce() -> T> LazyCell<T, F> {
     /// ```
     #[inline]
     #[unstable(feature = "lazy_cell", issue = "109736")]
-    pub const fn new(init: F) -> LazyCell<T, F> {
-        LazyCell { cell: OnceCell::new(), init: Cell::new(Some(init)) }
+    pub const fn new(f: F) -> LazyCell<T, F> {
+        LazyCell { state: UnsafeCell::new(State::Uninit(f)) }
     }
 
     /// Forces the evaluation of this lazy value and returns a reference to
@@ -77,10 +83,65 @@ impl<T, F: FnOnce() -> T> LazyCell<T, F> {
     #[inline]
     #[unstable(feature = "lazy_cell", issue = "109736")]
     pub fn force(this: &LazyCell<T, F>) -> &T {
-        this.cell.get_or_init(|| match this.init.take() {
-            Some(f) => f(),
-            None => panic!("`Lazy` instance has previously been poisoned"),
-        })
+        // SAFETY:
+        // This invalidates any mutable references to the data. The resulting
+        // reference lives either until the end of the borrow of `this` (in the
+        // initialized case) or is invalidated in `really_init` (in the
+        // uninitialized case; `really_init` will create and return a fresh reference).
+        let state = unsafe { &*this.state.get() };
+        match state {
+            State::Init(data) => data,
+            // SAFETY: The state is uninitialized.
+            State::Uninit(_) => unsafe { LazyCell::really_init(this) },
+            State::Poisoned => panic!("LazyCell has previously been poisoned"),
+        }
+    }
+
+    /// # Safety
+    /// May only be called when the state is `Uninit`.
+    #[cold]
+    unsafe fn really_init(this: &LazyCell<T, F>) -> &T {
+        // SAFETY:
+        // This function is only called when the state is uninitialized,
+        // so no references to `state` can exist except for the reference
+        // in `force`, which is invalidated here and not accessed again.
+        let state = unsafe { &mut *this.state.get() };
+        // Temporarily mark the state as poisoned. This prevents reentrant
+        // accesses and correctly poisons the cell if the closure panicked.
+        let State::Uninit(f) = mem::replace(state, State::Poisoned) else { unreachable!() };
+
+        let data = f();
+
+        // SAFETY:
+        // If the closure accessed the cell through something like a reentrant
+        // mutex, but caught the panic resulting from the state being poisoned,
+        // the mutable borrow for `state` will be invalidated, so we need to
+        // go through the `UnsafeCell` pointer here. The state can only be
+        // poisoned at this point, so using `write` to skip the destructor
+        // of `State` should help the optimizer.
+        unsafe { this.state.get().write(State::Init(data)) };
+
+        // SAFETY:
+        // The previous references were invalidated by the `write` call above,
+        // so do a new shared borrow of the state instead.
+        let state = unsafe { &*this.state.get() };
+        let State::Init(data) = state else { unreachable!() };
+        data
+    }
+}
+
+impl<T, F> LazyCell<T, F> {
+    #[inline]
+    fn get(&self) -> Option<&T> {
+        // SAFETY:
+        // This is sound for the same reason as in `force`: once the state is
+        // initialized, it will not be mutably accessed again, so this reference
+        // will stay valid for the duration of the borrow to `self`.
+        let state = unsafe { &*self.state.get() };
+        match state {
+            State::Init(data) => Some(data),
+            _ => None,
+        }
     }
 }
 
@@ -105,6 +166,11 @@ impl<T: Default> Default for LazyCell<T> {
 #[unstable(feature = "lazy_cell", issue = "109736")]
 impl<T: fmt::Debug, F> fmt::Debug for LazyCell<T, F> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        f.debug_struct("Lazy").field("cell", &self.cell).field("init", &"..").finish()
+        let mut d = f.debug_tuple("LazyCell");
+        match self.get() {
+            Some(data) => d.field(data),
+            None => d.field(&format_args!("<uninit>")),
+        };
+        d.finish()
     }
 }
diff --git a/library/core/src/iter/traits/iterator.rs b/library/core/src/iter/traits/iterator.rs
index 080330fa41e..36cf7defd6d 100644
--- a/library/core/src/iter/traits/iterator.rs
+++ b/library/core/src/iter/traits/iterator.rs
@@ -2120,8 +2120,8 @@ pub trait Iterator {
     ///
     /// # Current implementation
     ///
-    /// Current algorithms tries finding the first element for which the predicate evaluates
-    /// to false, and the last element for which it evaluates to true and repeatedly swaps them.
+    /// The current algorithm tries to find the first element for which the predicate evaluates
+    /// to false and the last element for which it evaluates to true, and repeatedly swaps them.
     ///
     /// Time complexity: *O*(*n*)
     ///
diff --git a/library/core/src/num/nonzero.rs b/library/core/src/num/nonzero.rs
index 06d22d84aed..ecfb735fad1 100644
--- a/library/core/src/num/nonzero.rs
+++ b/library/core/src/num/nonzero.rs
@@ -34,6 +34,13 @@ macro_rules! nonzero_integers {
             /// use std::mem::size_of;
             #[doc = concat!("assert_eq!(size_of::<Option<core::num::", stringify!($Ty), ">>(), size_of::<", stringify!($Int), ">());")]
             /// ```
+            ///
+            /// # Layout
+            ///
+            #[doc = concat!("`", stringify!($Ty), "` is guaranteed to have the same layout and bit validity as `", stringify!($Int), "`")]
+            /// with the exception that `0` is not a valid instance.
+            #[doc = concat!("`Option<", stringify!($Ty), ">` is guaranteed to be compatible with `", stringify!($Int), "`,")]
+            /// including in FFI.
             #[$stability]
             #[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
             #[repr(transparent)]
diff --git a/library/core/src/primitive_docs.rs b/library/core/src/primitive_docs.rs
index e12a3e378a6..bf8339335dd 100644
--- a/library/core/src/primitive_docs.rs
+++ b/library/core/src/primitive_docs.rs
@@ -1,7 +1,8 @@
 // `library/{std,core}/src/primitive_docs.rs` should have the same contents.
 // These are different files so that relative links work properly without
 // having to have `CARGO_PKG_NAME` set, but conceptually they should always be the same.
-#[doc(primitive = "bool")]
+#[cfg_attr(bootstrap, doc(primitive = "bool"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "bool")]
 #[doc(alias = "true")]
 #[doc(alias = "false")]
 /// The boolean type.
@@ -63,7 +64,8 @@
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_bool {}
 
-#[doc(primitive = "never")]
+#[cfg_attr(bootstrap, doc(primitive = "never"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "never")]
 #[doc(alias = "!")]
 //
 /// The `!` type, also called "never".
@@ -274,7 +276,8 @@ mod prim_bool {}
 #[unstable(feature = "never_type", issue = "35121")]
 mod prim_never {}
 
-#[doc(primitive = "char")]
+#[cfg_attr(bootstrap, doc(primitive = "char"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "char")]
 #[allow(rustdoc::invalid_rust_codeblocks)]
 /// A character type.
 ///
@@ -398,7 +401,8 @@ mod prim_never {}
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_char {}
 
-#[doc(primitive = "unit")]
+#[cfg_attr(bootstrap, doc(primitive = "unit"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "unit")]
 #[doc(alias = "(")]
 #[doc(alias = ")")]
 #[doc(alias = "()")]
@@ -460,7 +464,8 @@ impl Copy for () {
     // empty
 }
 
-#[doc(primitive = "pointer")]
+#[cfg_attr(bootstrap, doc(primitive = "pointer"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "pointer")]
 #[doc(alias = "ptr")]
 #[doc(alias = "*")]
 #[doc(alias = "*const")]
@@ -577,7 +582,8 @@ impl Copy for () {
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_pointer {}
 
-#[doc(primitive = "array")]
+#[cfg_attr(bootstrap, doc(primitive = "array"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "array")]
 #[doc(alias = "[]")]
 #[doc(alias = "[T;N]")] // unfortunately, rustdoc doesn't have fuzzy search for aliases
 #[doc(alias = "[T; N]")]
@@ -778,7 +784,8 @@ mod prim_pointer {}
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_array {}
 
-#[doc(primitive = "slice")]
+#[cfg_attr(bootstrap, doc(primitive = "slice"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "slice")]
 #[doc(alias = "[")]
 #[doc(alias = "]")]
 #[doc(alias = "[]")]
@@ -870,7 +877,8 @@ mod prim_array {}
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_slice {}
 
-#[doc(primitive = "str")]
+#[cfg_attr(bootstrap, doc(primitive = "str"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "str")]
 /// String slices.
 ///
 /// *[See also the `std::str` module](crate::str).*
@@ -937,7 +945,8 @@ mod prim_slice {}
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_str {}
 
-#[doc(primitive = "tuple")]
+#[cfg_attr(bootstrap, doc(primitive = "tuple"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "tuple")]
 #[doc(alias = "(")]
 #[doc(alias = ")")]
 #[doc(alias = "()")]
@@ -1081,7 +1090,8 @@ impl<T: Copy> Copy for (T,) {
     // empty
 }
 
-#[doc(primitive = "f32")]
+#[cfg_attr(bootstrap, doc(primitive = "f32"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "f32")]
 /// A 32-bit floating point type (specifically, the "binary32" type defined in IEEE 754-2008).
 ///
 /// This type can represent a wide range of decimal numbers, like `3.5`, `27`,
@@ -1147,7 +1157,8 @@ impl<T: Copy> Copy for (T,) {
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_f32 {}
 
-#[doc(primitive = "f64")]
+#[cfg_attr(bootstrap, doc(primitive = "f64"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "f64")]
 /// A 64-bit floating point type (specifically, the "binary64" type defined in IEEE 754-2008).
 ///
 /// This type is very similar to [`f32`], but has increased
@@ -1162,67 +1173,78 @@ mod prim_f32 {}
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_f64 {}
 
-#[doc(primitive = "i8")]
+#[cfg_attr(bootstrap, doc(primitive = "i8"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "i8")]
 //
 /// The 8-bit signed integer type.
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_i8 {}
 
-#[doc(primitive = "i16")]
+#[cfg_attr(bootstrap, doc(primitive = "i16"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "i16")]
 //
 /// The 16-bit signed integer type.
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_i16 {}
 
-#[doc(primitive = "i32")]
+#[cfg_attr(bootstrap, doc(primitive = "i32"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "i32")]
 //
 /// The 32-bit signed integer type.
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_i32 {}
 
-#[doc(primitive = "i64")]
+#[cfg_attr(bootstrap, doc(primitive = "i64"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "i64")]
 //
 /// The 64-bit signed integer type.
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_i64 {}
 
-#[doc(primitive = "i128")]
+#[cfg_attr(bootstrap, doc(primitive = "i128"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "i128")]
 //
 /// The 128-bit signed integer type.
 #[stable(feature = "i128", since = "1.26.0")]
 mod prim_i128 {}
 
-#[doc(primitive = "u8")]
+#[cfg_attr(bootstrap, doc(primitive = "u8"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "u8")]
 //
 /// The 8-bit unsigned integer type.
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_u8 {}
 
-#[doc(primitive = "u16")]
+#[cfg_attr(bootstrap, doc(primitive = "u16"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "u16")]
 //
 /// The 16-bit unsigned integer type.
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_u16 {}
 
-#[doc(primitive = "u32")]
+#[cfg_attr(bootstrap, doc(primitive = "u32"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "u32")]
 //
 /// The 32-bit unsigned integer type.
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_u32 {}
 
-#[doc(primitive = "u64")]
+#[cfg_attr(bootstrap, doc(primitive = "u64"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "u64")]
 //
 /// The 64-bit unsigned integer type.
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_u64 {}
 
-#[doc(primitive = "u128")]
+#[cfg_attr(bootstrap, doc(primitive = "u128"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "u128")]
 //
 /// The 128-bit unsigned integer type.
 #[stable(feature = "i128", since = "1.26.0")]
 mod prim_u128 {}
 
-#[doc(primitive = "isize")]
+#[cfg_attr(bootstrap, doc(primitive = "isize"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "isize")]
 //
 /// The pointer-sized signed integer type.
 ///
@@ -1232,7 +1254,8 @@ mod prim_u128 {}
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_isize {}
 
-#[doc(primitive = "usize")]
+#[cfg_attr(bootstrap, doc(primitive = "usize"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "usize")]
 //
 /// The pointer-sized unsigned integer type.
 ///
@@ -1242,7 +1265,8 @@ mod prim_isize {}
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_usize {}
 
-#[doc(primitive = "reference")]
+#[cfg_attr(bootstrap, doc(primitive = "reference"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "reference")]
 #[doc(alias = "&")]
 #[doc(alias = "&mut")]
 //
@@ -1373,7 +1397,8 @@ mod prim_usize {}
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_ref {}
 
-#[doc(primitive = "fn")]
+#[cfg_attr(bootstrap, doc(primitive = "fn"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "fn")]
 //
 /// Function pointers, like `fn(usize) -> bool`.
 ///
diff --git a/library/std/Cargo.toml b/library/std/Cargo.toml
index 6345db24054..96c75f97f6e 100644
--- a/library/std/Cargo.toml
+++ b/library/std/Cargo.toml
@@ -16,7 +16,7 @@ panic_unwind = { path = "../panic_unwind", optional = true }
 panic_abort = { path = "../panic_abort" }
 core = { path = "../core" }
 libc = { version = "0.2.140", default-features = false, features = ['rustc-dep-of-std'] }
-compiler_builtins = { version = "0.1.87" }
+compiler_builtins = { version = "0.1.91" }
 profiler_builtins = { path = "../profiler_builtins", optional = true }
 unwind = { path = "../unwind" }
 hashbrown = { version = "0.12", default-features = false, features = ['rustc-dep-of-std'] }
diff --git a/library/std/src/os/fd/owned.rs b/library/std/src/os/fd/owned.rs
index 99a4e0b5106..a40d39c5e44 100644
--- a/library/std/src/os/fd/owned.rs
+++ b/library/std/src/os/fd/owned.rs
@@ -268,7 +268,7 @@ impl AsFd for OwnedFd {
     #[inline]
     fn as_fd(&self) -> BorrowedFd<'_> {
         // Safety: `OwnedFd` and `BorrowedFd` have the same validity
-        // invariants, and the `BorrowdFd` is bounded by the lifetime
+        // invariants, and the `BorrowedFd` is bounded by the lifetime
         // of `&self`.
         unsafe { BorrowedFd::borrow_raw(self.as_raw_fd()) }
     }
diff --git a/library/std/src/primitive_docs.rs b/library/std/src/primitive_docs.rs
index e12a3e378a6..bf8339335dd 100644
--- a/library/std/src/primitive_docs.rs
+++ b/library/std/src/primitive_docs.rs
@@ -1,7 +1,8 @@
 // `library/{std,core}/src/primitive_docs.rs` should have the same contents.
 // These are different files so that relative links work properly without
 // having to have `CARGO_PKG_NAME` set, but conceptually they should always be the same.
-#[doc(primitive = "bool")]
+#[cfg_attr(bootstrap, doc(primitive = "bool"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "bool")]
 #[doc(alias = "true")]
 #[doc(alias = "false")]
 /// The boolean type.
@@ -63,7 +64,8 @@
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_bool {}
 
-#[doc(primitive = "never")]
+#[cfg_attr(bootstrap, doc(primitive = "never"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "never")]
 #[doc(alias = "!")]
 //
 /// The `!` type, also called "never".
@@ -274,7 +276,8 @@ mod prim_bool {}
 #[unstable(feature = "never_type", issue = "35121")]
 mod prim_never {}
 
-#[doc(primitive = "char")]
+#[cfg_attr(bootstrap, doc(primitive = "char"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "char")]
 #[allow(rustdoc::invalid_rust_codeblocks)]
 /// A character type.
 ///
@@ -398,7 +401,8 @@ mod prim_never {}
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_char {}
 
-#[doc(primitive = "unit")]
+#[cfg_attr(bootstrap, doc(primitive = "unit"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "unit")]
 #[doc(alias = "(")]
 #[doc(alias = ")")]
 #[doc(alias = "()")]
@@ -460,7 +464,8 @@ impl Copy for () {
     // empty
 }
 
-#[doc(primitive = "pointer")]
+#[cfg_attr(bootstrap, doc(primitive = "pointer"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "pointer")]
 #[doc(alias = "ptr")]
 #[doc(alias = "*")]
 #[doc(alias = "*const")]
@@ -577,7 +582,8 @@ impl Copy for () {
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_pointer {}
 
-#[doc(primitive = "array")]
+#[cfg_attr(bootstrap, doc(primitive = "array"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "array")]
 #[doc(alias = "[]")]
 #[doc(alias = "[T;N]")] // unfortunately, rustdoc doesn't have fuzzy search for aliases
 #[doc(alias = "[T; N]")]
@@ -778,7 +784,8 @@ mod prim_pointer {}
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_array {}
 
-#[doc(primitive = "slice")]
+#[cfg_attr(bootstrap, doc(primitive = "slice"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "slice")]
 #[doc(alias = "[")]
 #[doc(alias = "]")]
 #[doc(alias = "[]")]
@@ -870,7 +877,8 @@ mod prim_array {}
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_slice {}
 
-#[doc(primitive = "str")]
+#[cfg_attr(bootstrap, doc(primitive = "str"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "str")]
 /// String slices.
 ///
 /// *[See also the `std::str` module](crate::str).*
@@ -937,7 +945,8 @@ mod prim_slice {}
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_str {}
 
-#[doc(primitive = "tuple")]
+#[cfg_attr(bootstrap, doc(primitive = "tuple"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "tuple")]
 #[doc(alias = "(")]
 #[doc(alias = ")")]
 #[doc(alias = "()")]
@@ -1081,7 +1090,8 @@ impl<T: Copy> Copy for (T,) {
     // empty
 }
 
-#[doc(primitive = "f32")]
+#[cfg_attr(bootstrap, doc(primitive = "f32"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "f32")]
 /// A 32-bit floating point type (specifically, the "binary32" type defined in IEEE 754-2008).
 ///
 /// This type can represent a wide range of decimal numbers, like `3.5`, `27`,
@@ -1147,7 +1157,8 @@ impl<T: Copy> Copy for (T,) {
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_f32 {}
 
-#[doc(primitive = "f64")]
+#[cfg_attr(bootstrap, doc(primitive = "f64"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "f64")]
 /// A 64-bit floating point type (specifically, the "binary64" type defined in IEEE 754-2008).
 ///
 /// This type is very similar to [`f32`], but has increased
@@ -1162,67 +1173,78 @@ mod prim_f32 {}
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_f64 {}
 
-#[doc(primitive = "i8")]
+#[cfg_attr(bootstrap, doc(primitive = "i8"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "i8")]
 //
 /// The 8-bit signed integer type.
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_i8 {}
 
-#[doc(primitive = "i16")]
+#[cfg_attr(bootstrap, doc(primitive = "i16"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "i16")]
 //
 /// The 16-bit signed integer type.
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_i16 {}
 
-#[doc(primitive = "i32")]
+#[cfg_attr(bootstrap, doc(primitive = "i32"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "i32")]
 //
 /// The 32-bit signed integer type.
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_i32 {}
 
-#[doc(primitive = "i64")]
+#[cfg_attr(bootstrap, doc(primitive = "i64"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "i64")]
 //
 /// The 64-bit signed integer type.
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_i64 {}
 
-#[doc(primitive = "i128")]
+#[cfg_attr(bootstrap, doc(primitive = "i128"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "i128")]
 //
 /// The 128-bit signed integer type.
 #[stable(feature = "i128", since = "1.26.0")]
 mod prim_i128 {}
 
-#[doc(primitive = "u8")]
+#[cfg_attr(bootstrap, doc(primitive = "u8"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "u8")]
 //
 /// The 8-bit unsigned integer type.
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_u8 {}
 
-#[doc(primitive = "u16")]
+#[cfg_attr(bootstrap, doc(primitive = "u16"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "u16")]
 //
 /// The 16-bit unsigned integer type.
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_u16 {}
 
-#[doc(primitive = "u32")]
+#[cfg_attr(bootstrap, doc(primitive = "u32"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "u32")]
 //
 /// The 32-bit unsigned integer type.
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_u32 {}
 
-#[doc(primitive = "u64")]
+#[cfg_attr(bootstrap, doc(primitive = "u64"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "u64")]
 //
 /// The 64-bit unsigned integer type.
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_u64 {}
 
-#[doc(primitive = "u128")]
+#[cfg_attr(bootstrap, doc(primitive = "u128"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "u128")]
 //
 /// The 128-bit unsigned integer type.
 #[stable(feature = "i128", since = "1.26.0")]
 mod prim_u128 {}
 
-#[doc(primitive = "isize")]
+#[cfg_attr(bootstrap, doc(primitive = "isize"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "isize")]
 //
 /// The pointer-sized signed integer type.
 ///
@@ -1232,7 +1254,8 @@ mod prim_u128 {}
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_isize {}
 
-#[doc(primitive = "usize")]
+#[cfg_attr(bootstrap, doc(primitive = "usize"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "usize")]
 //
 /// The pointer-sized unsigned integer type.
 ///
@@ -1242,7 +1265,8 @@ mod prim_isize {}
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_usize {}
 
-#[doc(primitive = "reference")]
+#[cfg_attr(bootstrap, doc(primitive = "reference"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "reference")]
 #[doc(alias = "&")]
 #[doc(alias = "&mut")]
 //
@@ -1373,7 +1397,8 @@ mod prim_usize {}
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_ref {}
 
-#[doc(primitive = "fn")]
+#[cfg_attr(bootstrap, doc(primitive = "fn"))]
+#[cfg_attr(not(bootstrap), rustc_doc_primitive = "fn")]
 //
 /// Function pointers, like `fn(usize) -> bool`.
 ///
diff --git a/library/std/src/sys/hermit/net.rs b/library/std/src/sys/hermit/net.rs
index 5fb6281aa1e..d6f64a29719 100644
--- a/library/std/src/sys/hermit/net.rs
+++ b/library/std/src/sys/hermit/net.rs
@@ -1,7 +1,7 @@
 #![allow(dead_code)]
 
 use crate::cmp;
-use crate::io::{self, IoSlice, IoSliceMut};
+use crate::io::{self, BorrowedBuf, BorrowedCursor, IoSlice, IoSliceMut};
 use crate::mem;
 use crate::net::{Shutdown, SocketAddr};
 use crate::os::hermit::io::{AsFd, AsRawFd, BorrowedFd, FromRawFd, RawFd};
@@ -146,18 +146,35 @@ impl Socket {
         Ok(Socket(unsafe { FileDesc::from_raw_fd(fd) }))
     }
 
-    fn recv_with_flags(&self, buf: &mut [u8], flags: i32) -> io::Result<usize> {
-        let ret =
-            cvt(unsafe { netc::recv(self.0.as_raw_fd(), buf.as_mut_ptr(), buf.len(), flags) })?;
-        Ok(ret as usize)
+    fn recv_with_flags(&self, mut buf: BorrowedCursor<'_>, flags: i32) -> io::Result<()> {
+        let ret = cvt(unsafe {
+            netc::recv(
+                self.0.as_raw_fd(),
+                buf.as_mut().as_mut_ptr() as *mut u8,
+                buf.capacity(),
+                flags,
+            )
+        })?;
+        unsafe {
+            buf.advance(ret as usize);
+        }
+        Ok(())
     }
 
     pub fn read(&self, buf: &mut [u8]) -> io::Result<usize> {
-        self.recv_with_flags(buf, 0)
+        let mut buf = BorrowedBuf::from(buf);
+        self.recv_with_flags(buf.unfilled(), 0)?;
+        Ok(buf.len())
     }
 
     pub fn peek(&self, buf: &mut [u8]) -> io::Result<usize> {
-        self.recv_with_flags(buf, netc::MSG_PEEK)
+        let mut buf = BorrowedBuf::from(buf);
+        self.recv_with_flags(buf.unfilled(), netc::MSG_PEEK)?;
+        Ok(buf.len())
+    }
+
+    pub fn read_buf(&self, buf: BorrowedCursor<'_>) -> io::Result<()> {
+        self.recv_with_flags(buf, 0)
     }
 
     pub fn read_vectored(&self, bufs: &mut [IoSliceMut<'_>]) -> io::Result<usize> {
diff --git a/src/bootstrap/Cargo.lock b/src/bootstrap/Cargo.lock
index 27236e191fd..965dfa5f398 100644
--- a/src/bootstrap/Cargo.lock
+++ b/src/bootstrap/Cargo.lock
@@ -12,17 +12,6 @@ dependencies = [
 ]
 
 [[package]]
-name = "atty"
-version = "0.2.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
-dependencies = [
- "hermit-abi",
- "libc",
- "winapi",
-]
-
-[[package]]
 name = "autocfg"
 version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -47,7 +36,6 @@ dependencies = [
 name = "bootstrap"
 version = "0.0.0"
 dependencies = [
- "atty",
  "build_helper",
  "cc",
  "cmake",
@@ -56,6 +44,7 @@ dependencies = [
  "getopts",
  "hex",
  "ignore",
+ "is-terminal",
  "libc",
  "object",
  "once_cell",
@@ -212,13 +201,13 @@ checksum = "e78d4f1cc4ae33bbfc157ed5d5a5ef3bc29227303d595861deb238fcec4e9457"
 
 [[package]]
 name = "errno"
-version = "0.2.8"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f639046355ee4f37944e44f60642c6f3a7efa3cf6b78c78a0d989a8ce6c396a1"
+checksum = "50d6a0976c999d473fe89ad888d5a284e55366d9dc9038b1ba2aa15128c4afa0"
 dependencies = [
  "errno-dragonfly",
  "libc",
- "winapi",
+ "windows-sys",
 ]
 
 [[package]]
@@ -233,9 +222,9 @@ dependencies = [
 
 [[package]]
 name = "fd-lock"
-version = "3.0.8"
+version = "3.0.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bb21c69b9fea5e15dbc1049e4b77145dd0ba1c84019c488102de0dc4ea4b0a27"
+checksum = "9799aefb4a2e4a01cc47610b1dd47c18ab13d991f27bbcaed9296f5a53d5cbad"
 dependencies = [
  "cfg-if",
  "rustix",
@@ -302,6 +291,12 @@ dependencies = [
 ]
 
 [[package]]
+name = "hermit-abi"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fed44880c466736ef9a5c5b5facefb5ed0785676d0c02d612db14e54f0d84286"
+
+[[package]]
 name = "hex"
 version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -327,15 +322,28 @@ dependencies = [
 
 [[package]]
 name = "io-lifetimes"
-version = "1.0.1"
+version = "1.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a7d367024b3f3414d8e01f437f704f41a9f64ab36f9067fa73e526ad4c763c87"
+checksum = "09270fd4fa1111bc614ed2246c7ef56239a3063d5be0d1ec3b589c505d400aeb"
 dependencies = [
+ "hermit-abi 0.3.1",
  "libc",
  "windows-sys",
 ]
 
 [[package]]
+name = "is-terminal"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "256017f749ab3117e93acb91063009e1f1bb56d03965b14c2c8df4eb02c524d8"
+dependencies = [
+ "hermit-abi 0.3.1",
+ "io-lifetimes",
+ "rustix",
+ "windows-sys",
+]
+
+[[package]]
 name = "itoa"
 version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -349,15 +357,15 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.137"
+version = "0.2.140"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc7fcc620a3bff7cdd7a365be3376c97191aeaccc2a603e600951e452615bf89"
+checksum = "99227334921fae1a979cf0bfdfcc6b3e5ce376ef57e16fb6fb3ea2ed6095f80c"
 
 [[package]]
 name = "linux-raw-sys"
-version = "0.1.3"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f9f08d8963a6c613f4b1a78f4f4a4dbfadf8e6545b2d72861731e4858b8b47f"
+checksum = "d59d8c75012853d2e872fb56bc8a2e53718e2cafe1a4c823143141c6d90c322f"
 
 [[package]]
 name = "log"
@@ -409,7 +417,7 @@ version = "1.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "19e64526ebdee182341572e50e9ad03965aa510cd94427a4549448f285e957a1"
 dependencies = [
- "hermit-abi",
+ "hermit-abi 0.1.19",
  "libc",
 ]
 
@@ -540,9 +548,9 @@ checksum = "49b3de9ec5dc0a3417da371aab17d729997c15010e7fd24ff707773a33bddb64"
 
 [[package]]
 name = "rustix"
-version = "0.36.3"
+version = "0.37.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0b1fbb4dfc4eb1d390c02df47760bb19a84bb80b301ecc947ab5406394d8223e"
+checksum = "d097081ed288dfe45699b72f5b5d648e5f15d64d900c7080273baa20c16a6849"
 dependencies = [
  "bitflags",
  "errno",
@@ -753,17 +761,11 @@ dependencies = [
 
 [[package]]
 name = "windows-sys"
-version = "0.42.0"
+version = "0.45.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a3e1820f08b8513f676f7ab6c1f99ff312fb97b553d30ff4dd86f9f15728aa7"
+checksum = "75283be5efb2831d37ea142365f009c02ec203cd29a3ebecbc093d52315b66d0"
 dependencies = [
- "windows_aarch64_gnullvm",
- "windows_aarch64_msvc",
- "windows_i686_gnu",
- "windows_i686_msvc",
- "windows_x86_64_gnu",
- "windows_x86_64_gnullvm",
- "windows_x86_64_msvc",
+ "windows-targets",
 ]
 
 [[package]]
diff --git a/src/bootstrap/Cargo.toml b/src/bootstrap/Cargo.toml
index 5c659800bdb..2fbe7aa57aa 100644
--- a/src/bootstrap/Cargo.toml
+++ b/src/bootstrap/Cargo.toml
@@ -30,7 +30,7 @@ path = "bin/sccache-plus-cl.rs"
 test = false
 
 [dependencies]
-atty = "0.2.14"
+is-terminal = "0.4"
 build_helper = { path = "../tools/build_helper" }
 cmake = "0.1.38"
 filetime = "0.2"
diff --git a/src/bootstrap/bootstrap.py b/src/bootstrap/bootstrap.py
index 013d1ab525b..d12781cc33a 100644
--- a/src/bootstrap/bootstrap.py
+++ b/src/bootstrap/bootstrap.py
@@ -741,6 +741,9 @@ class RustBuild(object):
         env["LIBRARY_PATH"] = os.path.join(self.bin_root(), "lib") + \
             (os.pathsep + env["LIBRARY_PATH"]) \
             if "LIBRARY_PATH" in env else ""
+        env["LIBPATH"] = os.path.join(self.bin_root(), "lib") + \
+            (os.pathsep + env["LIBPATH"]) \
+            if "LIBPATH" in env else ""
 
         # Export Stage0 snapshot compiler related env variables
         build_section = "target.{}".format(self.build)
diff --git a/src/bootstrap/compile.rs b/src/bootstrap/compile.rs
index 67bd573a855..e3581943f2c 100644
--- a/src/bootstrap/compile.rs
+++ b/src/bootstrap/compile.rs
@@ -20,7 +20,7 @@ use serde_derive::Deserialize;
 
 use crate::builder::crate_description;
 use crate::builder::Cargo;
-use crate::builder::{Builder, Kind, RunConfig, ShouldRun, Step};
+use crate::builder::{Builder, Kind, PathSet, RunConfig, ShouldRun, Step, TaskPath};
 use crate::cache::{Interned, INTERNER};
 use crate::config::{LlvmLibunwind, RustcLto, TargetSelection};
 use crate::dist;
@@ -995,6 +995,44 @@ pub struct CodegenBackend {
     pub backend: Interned<String>,
 }
 
+fn needs_codegen_config(run: &RunConfig<'_>) -> bool {
+    let mut needs_codegen_cfg = false;
+    for path_set in &run.paths {
+        needs_codegen_cfg = match path_set {
+            PathSet::Set(set) => set.iter().any(|p| is_codegen_cfg_needed(p, run)),
+            PathSet::Suite(suite) => is_codegen_cfg_needed(&suite, run),
+        }
+    }
+    needs_codegen_cfg
+}
+
+const CODEGEN_BACKEND_PREFIX: &str = "rustc_codegen_";
+
+fn is_codegen_cfg_needed(path: &TaskPath, run: &RunConfig<'_>) -> bool {
+    if path.path.to_str().unwrap().contains(&CODEGEN_BACKEND_PREFIX) {
+        let mut needs_codegen_backend_config = true;
+        for &backend in &run.builder.config.rust_codegen_backends {
+            if path
+                .path
+                .to_str()
+                .unwrap()
+                .ends_with(&(CODEGEN_BACKEND_PREFIX.to_owned() + &backend))
+            {
+                needs_codegen_backend_config = false;
+            }
+        }
+        if needs_codegen_backend_config {
+            run.builder.info(
+                "Warning: no codegen-backends config matched the requested path to build a codegen backend. \
+                Help: add backend to codegen-backends in config.toml.",
+            );
+            return true;
+        }
+    }
+
+    return false;
+}
+
 impl Step for CodegenBackend {
     type Output = ();
     const ONLY_HOSTS: bool = true;
@@ -1006,6 +1044,10 @@ impl Step for CodegenBackend {
     }
 
     fn make_run(run: RunConfig<'_>) {
+        if needs_codegen_config(&run) {
+            return;
+        }
+
         for &backend in &run.builder.config.rust_codegen_backends {
             if backend == "llvm" {
                 continue; // Already built as part of rustc
@@ -1346,6 +1388,13 @@ impl Step for Assemble {
         // when not performing a full bootstrap).
         builder.ensure(Rustc::new(build_compiler, target_compiler.host));
 
+        // FIXME: For now patch over problems noted in #90244 by early returning here, even though
+        // we've not properly assembled the target sysroot. A full fix is pending further investigation,
+        // for now full bootstrap usage is rare enough that this is OK.
+        if target_compiler.stage >= 3 && !builder.config.full_bootstrap {
+            return target_compiler;
+        }
+
         for &backend in builder.config.rust_codegen_backends.iter() {
             if backend == "llvm" {
                 continue; // Already built as part of rustc
diff --git a/src/bootstrap/config.rs b/src/bootstrap/config.rs
index 0eba18c3a63..b8b6b7b2d4e 100644
--- a/src/bootstrap/config.rs
+++ b/src/bootstrap/config.rs
@@ -808,6 +808,8 @@ define_config! {
 
 impl Config {
     pub fn default_opts() -> Config {
+        use is_terminal::IsTerminal;
+
         let mut config = Config::default();
         config.llvm_optimize = true;
         config.ninja_in_file = true;
@@ -828,8 +830,8 @@ impl Config {
         config.dist_include_mingw_linker = true;
         config.dist_compression_profile = "fast".into();
 
-        config.stdout_is_tty = atty::is(atty::Stream::Stdout);
-        config.stderr_is_tty = atty::is(atty::Stream::Stderr);
+        config.stdout_is_tty = std::io::stdout().is_terminal();
+        config.stderr_is_tty = std::io::stderr().is_terminal();
 
         // set by build.rs
         config.build = TargetSelection::from_user(&env!("BUILD_TRIPLE"));
diff --git a/src/bootstrap/dylib_util.rs b/src/bootstrap/dylib_util.rs
index 6d75272c501..b14c0bed66c 100644
--- a/src/bootstrap/dylib_util.rs
+++ b/src/bootstrap/dylib_util.rs
@@ -12,6 +12,8 @@ pub fn dylib_path_var() -> &'static str {
         "DYLD_LIBRARY_PATH"
     } else if cfg!(target_os = "haiku") {
         "LIBRARY_PATH"
+    } else if cfg!(target_os = "aix") {
+        "LIBPATH"
     } else {
         "LD_LIBRARY_PATH"
     }
diff --git a/src/bootstrap/lib.rs b/src/bootstrap/lib.rs
index 2ffad594fc7..e3f3ab5243e 100644
--- a/src/bootstrap/lib.rs
+++ b/src/bootstrap/lib.rs
@@ -21,7 +21,6 @@ use std::collections::{HashMap, HashSet};
 use std::env;
 use std::fs::{self, File};
 use std::io;
-use std::io::ErrorKind;
 use std::path::{Path, PathBuf};
 use std::process::{Command, Stdio};
 use std::str;
@@ -505,16 +504,18 @@ impl Build {
         let build_triple = build.out.join(&build.build.triple);
         t!(fs::create_dir_all(&build_triple));
         let host = build.out.join("host");
-        if let Err(e) = symlink_dir(&build.config, &build_triple, &host) {
-            if e.kind() != ErrorKind::AlreadyExists {
-                panic!(
-                    "symlink_dir({} => {}) failed with {}",
-                    host.display(),
-                    build_triple.display(),
-                    e
-                );
-            }
-        }
+        if host.is_symlink() {
+            // Left over from a previous build; overwrite it.
+            // This matters if `build.build` has changed between invocations.
+            #[cfg(windows)]
+            t!(fs::remove_dir(&host));
+            #[cfg(not(windows))]
+            t!(fs::remove_file(&host));
+        }
+        t!(
+            symlink_dir(&build.config, &build_triple, &host),
+            format!("symlink_dir({} => {}) failed", host.display(), build_triple.display())
+        );
 
         build
     }
diff --git a/src/bootstrap/metrics.rs b/src/bootstrap/metrics.rs
index 5f254761aa1..82b123ec8a5 100644
--- a/src/bootstrap/metrics.rs
+++ b/src/bootstrap/metrics.rs
@@ -11,7 +11,7 @@ use serde_derive::{Deserialize, Serialize};
 use std::cell::RefCell;
 use std::fs::File;
 use std::io::BufWriter;
-use std::time::{Duration, Instant};
+use std::time::{Duration, Instant, SystemTime};
 use sysinfo::{CpuExt, System, SystemExt};
 
 pub(crate) struct BuildMetrics {
@@ -27,6 +27,7 @@ impl BuildMetrics {
             system_info: System::new(),
             timer_start: None,
             invocation_timer_start: Instant::now(),
+            invocation_start: SystemTime::now(),
         });
 
         BuildMetrics { state }
@@ -124,6 +125,11 @@ impl BuildMetrics {
             }
         };
         invocations.push(JsonInvocation {
+            start_time: state
+                .invocation_start
+                .duration_since(SystemTime::UNIX_EPOCH)
+                .unwrap()
+                .as_secs(),
             duration_including_children_sec: state.invocation_timer_start.elapsed().as_secs_f64(),
             children: steps.into_iter().map(|step| self.prepare_json_step(step)).collect(),
         });
@@ -166,6 +172,7 @@ struct MetricsState {
     system_info: System,
     timer_start: Option<Instant>,
     invocation_timer_start: Instant,
+    invocation_start: SystemTime,
 }
 
 struct StepMetrics {
@@ -194,6 +201,10 @@ struct JsonRoot {
 #[derive(Serialize, Deserialize)]
 #[serde(rename_all = "snake_case")]
 struct JsonInvocation {
+    // Unix timestamp in seconds
+    //
+    // This is necessary to easily correlate this invocation with logs or other data.
+    start_time: u64,
     duration_including_children_sec: f64,
     children: Vec<JsonNode>,
 }
diff --git a/src/ci/docker/host-x86_64/x86_64-gnu-tools/browser-ui-test.version b/src/ci/docker/host-x86_64/x86_64-gnu-tools/browser-ui-test.version
index 6fd113fcfd8..66fb941ea37 100644
--- a/src/ci/docker/host-x86_64/x86_64-gnu-tools/browser-ui-test.version
+++ b/src/ci/docker/host-x86_64/x86_64-gnu-tools/browser-ui-test.version
@@ -1 +1 @@
-0.14.5
\ No newline at end of file
+0.14.6
\ No newline at end of file
diff --git a/src/ci/github-actions/ci.yml b/src/ci/github-actions/ci.yml
index c594288dcf8..403953b5047 100644
--- a/src/ci/github-actions/ci.yml
+++ b/src/ci/github-actions/ci.yml
@@ -284,7 +284,7 @@ jobs:
     permissions:
       actions: write # for rust-lang/simpleinfra/github-actions/cancel-outdated-builds
     <<: *base-ci-job
-    name: PR
+    name: PR - ${{ matrix.name }}
     env:
       <<: [*shared-ci-variables, *public-variables]
     if: github.event_name == 'pull_request'
@@ -312,7 +312,7 @@ jobs:
     permissions:
       actions: write # for rust-lang/simpleinfra/github-actions/cancel-outdated-builds
     <<: *base-ci-job
-    name: auto
+    name: auto - ${{ matrix.name }}
     env:
       <<: [*shared-ci-variables, *prod-variables]
     if: github.event_name == 'push' && github.ref == 'refs/heads/auto' && github.repository == 'rust-lang-ci/rust'
@@ -741,7 +741,7 @@ jobs:
     permissions:
       actions: write # for rust-lang/simpleinfra/github-actions/cancel-outdated-builds
     <<: *base-ci-job
-    name: try
+    name: try - ${{ matrix.name }}
     env:
       <<: [*shared-ci-variables, *prod-variables]
     if: github.event_name == 'push' && (github.ref == 'refs/heads/try' || github.ref == 'refs/heads/try-perf') && github.repository == 'rust-lang-ci/rust'
diff --git a/src/ci/run.sh b/src/ci/run.sh
index 5f4e4a8e1b4..3056d9fc054 100755
--- a/src/ci/run.sh
+++ b/src/ci/run.sh
@@ -58,7 +58,12 @@ RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --disable-manage-submodules"
 RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --enable-locked-deps"
 RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --enable-cargo-native-static"
 RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --set rust.codegen-units-std=1"
-RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --set dist.compression-profile=best"
+# rust-lang/promote-release will recompress CI artifacts, and while we care
+# about the per-commit artifact sizes, it's not as important that they're
+# highly compressed as it is that the process is fast. Best compression
+# generally implies single-threaded compression which results in wasting most
+# of our CPU resources.
+RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --set dist.compression-profile=balanced"
 
 # When building for mingw, limit the number of parallel linker jobs during
 # the LLVM build, as not to run out of memory.
diff --git a/src/doc/book b/src/doc/book
-Subproject 21a2ed14f4480dab62438dcc1130291bebc6537
+Subproject 0510ca84c2ce6bf93c4ccf9248756e9e4fd00b1
diff --git a/src/doc/rust-by-example b/src/doc/rust-by-example
-Subproject cfbfd648ce33926c3490f24de9a5b56cce404b8
+Subproject ba84bf35d0f17d404003349309201654d25f61a
diff --git a/src/doc/rustc-dev-guide b/src/doc/rustc-dev-guide
-Subproject d08baa166b463537229eeb737c4ccadabd83cf7
+Subproject fca8af6c154c6cde2512f1331cf2704f214a818
diff --git a/src/doc/rustc/src/codegen-options/index.md b/src/doc/rustc/src/codegen-options/index.md
index c7f120dafea..62347f169a5 100644
--- a/src/doc/rustc/src/codegen-options/index.md
+++ b/src/doc/rustc/src/codegen-options/index.md
@@ -71,9 +71,11 @@ If not specified, debug assertions are automatically enabled only if the
 This flag controls the generation of debug information. It takes one of the
 following values:
 
-* `0`: no debug info at all (the default).
-* `1`: line tables only.
-* `2`: full debug info.
+* `0` or `none`: no debug info at all (the default).
+* `line-directives-only`: line info directives only. For the nvptx* targets this enables [profiling](https://reviews.llvm.org/D46061). For other use cases, `line-tables-only` is the better, more compatible choice.
+* `line-tables-only`: line tables only. Generates the minimal amount of debug info for backtraces with filename/line number info, but not anything else, i.e. no variable or function parameter info.
+* `1` or `limited`: debug info without type or variable-level information.
+* `2` or `full`: full debug info.
 
 Note: The [`-g` flag][option-g-debug] is an alias for `-C debuginfo=2`.
 
diff --git a/src/doc/rustc/src/platform-support/armv4t-none-eabi.md b/src/doc/rustc/src/platform-support/armv4t-none-eabi.md
index cf831e1595e..a230eba6bf9 100644
--- a/src/doc/rustc/src/platform-support/armv4t-none-eabi.md
+++ b/src/doc/rustc/src/platform-support/armv4t-none-eabi.md
@@ -17,13 +17,6 @@ specific with this target, so any ARMv4T device should work fine.
 
 The target is cross-compiled, and uses static linking.
 
-The linker that comes with rustc cannot link for this platform (the platform is
-too old). You will need the `arm-none-eabi-ld` linker from a GNU Binutils
-targeting ARM. This can be obtained for Windows/Mac/Linux from the [ARM
-Developer Website][arm-dev], or possibly from your OS's package manager.
-
-[arm-dev]: https://developer.arm.com/Tools%20and%20Software/GNU%20Toolchain
-
 This target doesn't provide a linker script, you'll need to bring your own
 according to the specific device you want to target. Pass
 `-Clink-arg=-Tyour_script.ld` as a rustc argument to make the linker use
diff --git a/src/doc/rustdoc/src/unstable-features.md b/src/doc/rustdoc/src/unstable-features.md
index b8b5014ab42..960c1de1782 100644
--- a/src/doc/rustdoc/src/unstable-features.md
+++ b/src/doc/rustdoc/src/unstable-features.md
@@ -177,9 +177,9 @@ Book][unstable-masked] and [its tracking issue][issue-masked].
 This is for Rust compiler internal use only.
 
 Since primitive types are defined in the compiler, there's no place to attach documentation
-attributes. The `#[doc(primitive)]` attribute is used by the standard library to provide a way
-to generate documentation for primitive types, and requires `#![feature(rustdoc_internals)]` to
-enable.
+attributes. The `#[rustc_doc_primitive = "..."]` attribute is used by the standard library to
+provide a way to generate documentation for primitive types, and requires `#![feature(rustc_attrs)]`
+to enable.
 
 ### Document keywords
 
diff --git a/src/librustdoc/clean/mod.rs b/src/librustdoc/clean/mod.rs
index 2d247bd537b..1c57cd7a946 100644
--- a/src/librustdoc/clean/mod.rs
+++ b/src/librustdoc/clean/mod.rs
@@ -2002,7 +2002,8 @@ fn clean_generic_args<'tcx>(
     generic_args: &hir::GenericArgs<'tcx>,
     cx: &mut DocContext<'tcx>,
 ) -> GenericArgs {
-    if generic_args.parenthesized {
+    // FIXME(return_type_notation): Fix RTN parens rendering
+    if generic_args.parenthesized == hir::GenericArgsParentheses::ParenSugar {
         let output = clean_ty(generic_args.bindings[0].ty(), cx);
         let output = if output != Type::Tuple(Vec::new()) { Some(Box::new(output)) } else { None };
         let inputs =
diff --git a/src/librustdoc/clean/types.rs b/src/librustdoc/clean/types.rs
index 909e0a07e4c..a37d4f31643 100644
--- a/src/librustdoc/clean/types.rs
+++ b/src/librustdoc/clean/types.rs
@@ -249,38 +249,24 @@ impl ExternalCrate {
         //
         // Note that this loop only searches the top-level items of the crate,
         // and this is intentional. If we were to search the entire crate for an
-        // item tagged with `#[doc(primitive)]` then we would also have to
+        // item tagged with `#[rustc_doc_primitive]` then we would also have to
         // search the entirety of external modules for items tagged
-        // `#[doc(primitive)]`, which is a pretty inefficient process (decoding
+        // `#[rustc_doc_primitive]`, which is a pretty inefficient process (decoding
         // all that metadata unconditionally).
         //
         // In order to keep the metadata load under control, the
-        // `#[doc(primitive)]` feature is explicitly designed to only allow the
+        // `#[rustc_doc_primitive]` feature is explicitly designed to only allow the
         // primitive tags to show up as the top level items in a crate.
         //
         // Also note that this does not attempt to deal with modules tagged
         // duplicately for the same primitive. This is handled later on when
         // rendering by delegating everything to a hash map.
         let as_primitive = |res: Res<!>| {
-            if let Res::Def(DefKind::Mod, def_id) = res {
-                let mut prim = None;
-                let meta_items = tcx
-                    .get_attrs(def_id, sym::doc)
-                    .flat_map(|attr| attr.meta_item_list().unwrap_or_default());
-                for meta in meta_items {
-                    if let Some(v) = meta.value_str() {
-                        if meta.has_name(sym::primitive) {
-                            prim = PrimitiveType::from_symbol(v);
-                            if prim.is_some() {
-                                break;
-                            }
-                            // FIXME: should warn on unknown primitives?
-                        }
-                    }
-                }
-                return prim.map(|p| (def_id, p));
-            }
-            None
+            let Res::Def(DefKind::Mod, def_id) = res else { return None };
+            tcx.get_attrs(def_id, sym::rustc_doc_primitive).find_map(|attr| {
+                // FIXME: should warn on unknown primitives?
+                Some((def_id, PrimitiveType::from_symbol(attr.value_str()?)?))
+            })
         };
 
         if root.is_local() {
@@ -466,10 +452,12 @@ impl Item {
     pub(crate) fn links(&self, cx: &Context<'_>) -> Vec<RenderedLink> {
         use crate::html::format::{href, link_tooltip};
 
-        cx.cache()
+        let Some(links) = cx.cache()
             .intra_doc_links
-            .get(&self.item_id)
-            .map_or(&[][..], |v| v.as_slice())
+            .get(&self.item_id) else {
+                return vec![]
+            };
+        links
             .iter()
             .filter_map(|ItemLink { link: s, link_text, page_id: id, ref fragment }| {
                 debug!(?id);
@@ -497,10 +485,12 @@ impl Item {
     /// the link text, but does need to know which `[]`-bracketed names
     /// are actually links.
     pub(crate) fn link_names(&self, cache: &Cache) -> Vec<RenderedLink> {
-        cache
+        let Some(links) = cache
             .intra_doc_links
-            .get(&self.item_id)
-            .map_or(&[][..], |v| v.as_slice())
+            .get(&self.item_id) else {
+                return vec![];
+            };
+        links
             .iter()
             .map(|ItemLink { link: s, link_text, .. }| RenderedLink {
                 original_text: s.clone(),
@@ -1020,7 +1010,7 @@ pub(crate) fn collapse_doc_fragments(doc_strings: &[DocFragment]) -> String {
 /// A link that has not yet been rendered.
 ///
 /// This link will be turned into a rendered link by [`Item::links`].
-#[derive(Clone, Debug, PartialEq, Eq)]
+#[derive(Clone, Debug, PartialEq, Eq, Hash)]
 pub(crate) struct ItemLink {
     /// The original link written in the markdown
     pub(crate) link: Box<str>,
@@ -1829,13 +1819,17 @@ impl PrimitiveType {
         }
     }
 
-    /// Returns the DefId of the module with `doc(primitive)` for this primitive type.
+    /// Returns the DefId of the module with `rustc_doc_primitive` for this primitive type.
     /// Panics if there is no such module.
     ///
-    /// This gives precedence to primitives defined in the current crate, and deprioritizes primitives defined in `core`,
-    /// but otherwise, if multiple crates define the same primitive, there is no guarantee of which will be picked.
-    /// In particular, if a crate depends on both `std` and another crate that also defines `doc(primitive)`, then
-    /// it's entirely random whether `std` or the other crate is picked. (no_std crates are usually fine unless multiple dependencies define a primitive.)
+    /// This gives precedence to primitives defined in the current crate, and deprioritizes
+    /// primitives defined in `core`,
+    /// but otherwise, if multiple crates define the same primitive, there is no guarantee of which
+    /// will be picked.
+    ///
+    /// In particular, if a crate depends on both `std` and another crate that also defines
+    /// `rustc_doc_primitive`, then it's entirely random whether `std` or the other crate is picked.
+    /// (no_std crates are usually fine unless multiple dependencies define a primitive.)
     pub(crate) fn primitive_locations(tcx: TyCtxt<'_>) -> &FxHashMap<PrimitiveType, DefId> {
         static PRIMITIVE_LOCATIONS: OnceCell<FxHashMap<PrimitiveType, DefId>> = OnceCell::new();
         PRIMITIVE_LOCATIONS.get_or_init(|| {
diff --git a/src/librustdoc/config.rs b/src/librustdoc/config.rs
index 2c514a0c826..ea8c7e9a67c 100644
--- a/src/librustdoc/config.rs
+++ b/src/librustdoc/config.rs
@@ -31,18 +31,13 @@ use crate::passes::{self, Condition};
 use crate::scrape_examples::{AllCallLocations, ScrapeExamplesOptions};
 use crate::theme;
 
-#[derive(Clone, Copy, PartialEq, Eq, Debug)]
+#[derive(Clone, Copy, PartialEq, Eq, Debug, Default)]
 pub(crate) enum OutputFormat {
     Json,
+    #[default]
     Html,
 }
 
-impl Default for OutputFormat {
-    fn default() -> OutputFormat {
-        OutputFormat::Html
-    }
-}
-
 impl OutputFormat {
     pub(crate) fn is_json(&self) -> bool {
         matches!(self, OutputFormat::Json)
diff --git a/src/librustdoc/formats/cache.rs b/src/librustdoc/formats/cache.rs
index 0295de8437e..c0329182032 100644
--- a/src/librustdoc/formats/cache.rs
+++ b/src/librustdoc/formats/cache.rs
@@ -1,6 +1,6 @@
 use std::mem;
 
-use rustc_data_structures::fx::{FxHashMap, FxHashSet};
+use rustc_data_structures::fx::{FxHashMap, FxHashSet, FxIndexSet};
 use rustc_hir::def_id::{CrateNum, DefId, DefIdMap, DefIdSet};
 use rustc_middle::ty::{self, TyCtxt};
 use rustc_span::Symbol;
@@ -118,7 +118,7 @@ pub(crate) struct Cache {
     /// All intra-doc links resolved so far.
     ///
     /// Links are indexed by the DefId of the item they document.
-    pub(crate) intra_doc_links: FxHashMap<ItemId, Vec<clean::ItemLink>>,
+    pub(crate) intra_doc_links: FxHashMap<ItemId, FxIndexSet<clean::ItemLink>>,
     /// Cfg that have been hidden via #![doc(cfg_hide(...))]
     pub(crate) hidden_cfg: FxHashSet<clean::cfg::Cfg>,
 }
diff --git a/src/librustdoc/html/format.rs b/src/librustdoc/html/format.rs
index 0895bb510d4..02b358e863b 100644
--- a/src/librustdoc/html/format.rs
+++ b/src/librustdoc/html/format.rs
@@ -1142,22 +1142,21 @@ fn fmt_type<'cx>(
             //        the ugliness comes from inlining across crates where
             //        everything comes in as a fully resolved QPath (hard to
             //        look at).
-            match href(trait_.def_id(), cx) {
-                Ok((ref url, _, ref path)) if !f.alternate() => {
-                    write!(
-                        f,
-                        "<a class=\"associatedtype\" href=\"{url}#{shortty}.{name}\" \
-                                    title=\"type {path}::{name}\">{name}</a>{args}",
-                        url = url,
-                        shortty = ItemType::AssocType,
-                        name = assoc.name,
-                        path = join_with_double_colon(path),
-                        args = assoc.args.print(cx),
-                    )?;
-                }
-                _ => write!(f, "{}{:#}", assoc.name, assoc.args.print(cx))?,
-            }
-            Ok(())
+            if !f.alternate() && let Ok((url, _, path)) = href(trait_.def_id(), cx) {
+                write!(
+                    f,
+                    "<a class=\"associatedtype\" href=\"{url}#{shortty}.{name}\" \
+                                title=\"type {path}::{name}\">{name}</a>",
+                    shortty = ItemType::AssocType,
+                    name = assoc.name,
+                    path = join_with_double_colon(&path),
+                )
+            } else {
+                write!(f, "{}", assoc.name)
+            }?;
+
+            // Carry `f.alternate()` into this display w/o branching manually.
+            fmt::Display::fmt(&assoc.args.print(cx), f)
         }
     }
 }
diff --git a/src/librustdoc/html/highlight.rs b/src/librustdoc/html/highlight.rs
index c099d0e4f3f..b61dd571458 100644
--- a/src/librustdoc/html/highlight.rs
+++ b/src/librustdoc/html/highlight.rs
@@ -177,8 +177,8 @@ impl<'a, 'tcx, F: Write> TokenHandler<'a, 'tcx, F> {
         } else {
             // We only want to "open" the tag ourselves if we have more than one pending and if the
             // current parent tag is not the same as our pending content.
-            let close_tag = if self.pending_elems.len() > 1 && current_class.is_some() {
-                Some(enter_span(self.out, current_class.unwrap(), &self.href_context))
+            let close_tag = if self.pending_elems.len() > 1 && let Some(current_class) = current_class {
+                Some(enter_span(self.out, current_class, &self.href_context))
             } else {
                 None
             };
diff --git a/src/librustdoc/html/render/sidebar.rs b/src/librustdoc/html/render/sidebar.rs
index 94ad4753d7c..455b4e9aefe 100644
--- a/src/librustdoc/html/render/sidebar.rs
+++ b/src/librustdoc/html/render/sidebar.rs
@@ -113,11 +113,8 @@ pub(super) fn print_sidebar(cx: &Context<'_>, it: &clean::Item, buffer: &mut Buf
     } else {
         ("", "")
     };
-    let version = if it.is_crate() {
-        cx.cache().crate_version.as_ref().map(String::as_str).unwrap_or_default()
-    } else {
-        ""
-    };
+    let version =
+        if it.is_crate() { cx.cache().crate_version.as_deref().unwrap_or_default() } else { "" };
     let path: String = if !it.is_mod() {
         cx.current.iter().map(|s| s.as_str()).intersperse("::").collect()
     } else {
diff --git a/src/librustdoc/html/static/js/main.js b/src/librustdoc/html/static/js/main.js
index 1487ebf9b0a..45c0360a49e 100644
--- a/src/librustdoc/html/static/js/main.js
+++ b/src/librustdoc/html/static/js/main.js
@@ -1016,9 +1016,7 @@ function preLoadCss(cssUrl) {
              <code>enum</code>, <code>trait</code>, <code>type</code>, <code>macro</code>, \
              and <code>const</code>.",
             "Search functions by type signature (e.g., <code>vec -&gt; usize</code> or \
-             <code>-&gt; vec</code>)",
-            "Search multiple things at once by splitting your query with comma (e.g., \
-             <code>str,u8</code> or <code>String,struct:Vec,test</code>)",
+             <code>-&gt; vec</code> or <code>String, enum:Cow -&gt; bool</code>)",
             "You can look for items with an exact name by putting double quotes around \
              your request: <code>\"string\"</code>",
             "Look for items inside another one by searching for a path: <code>vec::Vec</code>",
diff --git a/src/librustdoc/json/conversions.rs b/src/librustdoc/json/conversions.rs
index 59d67f27b30..c39caf73a93 100644
--- a/src/librustdoc/json/conversions.rs
+++ b/src/librustdoc/json/conversions.rs
@@ -249,9 +249,7 @@ pub(crate) fn id_from_item_inner(
                     // instead, we directly get the primitive symbol and convert it to u32 to
                     // generate the ID.
                     if matches!(tcx.def_kind(def_id), DefKind::Mod) &&
-                        let Some(prim) = tcx.get_attrs(*def_id, sym::doc)
-                            .flat_map(|attr| attr.meta_item_list().unwrap_or_default())
-                            .filter(|attr| attr.has_name(sym::primitive))
+                        let Some(prim) = tcx.get_attrs(*def_id, sym::rustc_doc_primitive)
                             .find_map(|attr| attr.value_str()) {
                         format!(":{}", prim.as_u32())
                     } else {
diff --git a/src/librustdoc/json/mod.rs b/src/librustdoc/json/mod.rs
index 08bceb59cfd..d6da6e09938 100644
--- a/src/librustdoc/json/mod.rs
+++ b/src/librustdoc/json/mod.rs
@@ -78,7 +78,7 @@ impl<'tcx> JsonRenderer<'tcx> {
                         // HACK(hkmatsumoto): For impls of primitive types, we index them
                         // regardless of whether they're local. This is because users can
                         // document primitive items in an arbitrary crate by using
-                        // `doc(primitive)`.
+                        // `rustc_doc_primitive`.
                         let mut is_primitive_impl = false;
                         if let clean::types::ItemKind::ImplItem(ref impl_) = *item.kind &&
                             impl_.trait_.is_none() &&
diff --git a/src/librustdoc/passes/collect_intra_doc_links.rs b/src/librustdoc/passes/collect_intra_doc_links.rs
index d98cf251e97..2cd9c8a8781 100644
--- a/src/librustdoc/passes/collect_intra_doc_links.rs
+++ b/src/librustdoc/passes/collect_intra_doc_links.rs
@@ -47,7 +47,18 @@ fn collect_intra_doc_links(krate: Crate, cx: &mut DocContext<'_>) -> Crate {
     krate
 }
 
-#[derive(Copy, Clone, Debug, Hash)]
+fn filter_assoc_items_by_name_and_namespace<'a>(
+    tcx: TyCtxt<'a>,
+    assoc_items_of: DefId,
+    ident: Ident,
+    ns: Namespace,
+) -> impl Iterator<Item = &ty::AssocItem> + 'a {
+    tcx.associated_items(assoc_items_of).filter_by_name_unhygienic(ident.name).filter(move |item| {
+        item.kind.namespace() == ns && tcx.hygienic_eq(ident, item.ident(tcx), assoc_items_of)
+    })
+}
+
+#[derive(Copy, Clone, Debug, Hash, PartialEq)]
 enum Res {
     Def(DefKind, DefId),
     Primitive(PrimitiveType),
@@ -59,7 +70,7 @@ impl Res {
     fn descr(self) -> &'static str {
         match self {
             Res::Def(kind, id) => ResolveRes::Def(kind, id).descr(),
-            Res::Primitive(_) => "builtin type",
+            Res::Primitive(_) => "primitive type",
         }
     }
 
@@ -317,14 +328,21 @@ impl<'a, 'tcx> LinkCollector<'a, 'tcx> {
         prim_ty: PrimitiveType,
         ns: Namespace,
         item_name: Symbol,
-    ) -> Option<(Res, DefId)> {
+    ) -> Vec<(Res, DefId)> {
         let tcx = self.cx.tcx;
 
-        prim_ty.impls(tcx).find_map(|impl_| {
-            tcx.associated_items(impl_)
-                .find_by_name_and_namespace(tcx, Ident::with_dummy_span(item_name), ns, impl_)
+        prim_ty
+            .impls(tcx)
+            .flat_map(|impl_| {
+                filter_assoc_items_by_name_and_namespace(
+                    tcx,
+                    impl_,
+                    Ident::with_dummy_span(item_name),
+                    ns,
+                )
                 .map(|item| (Res::Primitive(prim_ty), item.def_id))
-        })
+            })
+            .collect::<Vec<_>>()
     }
 
     fn resolve_self_ty(&self, path_str: &str, ns: Namespace, item_id: DefId) -> Option<Res> {
@@ -394,14 +412,16 @@ impl<'a, 'tcx> LinkCollector<'a, 'tcx> {
         ns: Namespace,
         item_id: DefId,
         module_id: DefId,
-    ) -> Result<(Res, Option<DefId>), UnresolvedPath<'path>> {
+    ) -> Result<Vec<(Res, Option<DefId>)>, UnresolvedPath<'path>> {
         if let Some(res) = self.resolve_path(path_str, ns, item_id, module_id) {
             return Ok(match res {
                 Res::Def(
                     DefKind::AssocFn | DefKind::AssocConst | DefKind::AssocTy | DefKind::Variant,
                     def_id,
-                ) => (Res::from_def_id(self.cx.tcx, self.cx.tcx.parent(def_id)), Some(def_id)),
-                _ => (res, None),
+                ) => {
+                    vec![(Res::from_def_id(self.cx.tcx, self.cx.tcx.parent(def_id)), Some(def_id))]
+                }
+                _ => vec![(res, None)],
             });
         } else if ns == MacroNS {
             return Err(UnresolvedPath {
@@ -433,17 +453,24 @@ impl<'a, 'tcx> LinkCollector<'a, 'tcx> {
             })?;
 
         // FIXME(#83862): this arbitrarily gives precedence to primitives over modules to support
-        // links to primitives when `#[doc(primitive)]` is present. It should give an ambiguity
-        // error instead and special case *only* modules with `#[doc(primitive)]`, not all
+        // links to primitives when `#[rustc_doc_primitive]` is present. It should give an ambiguity
+        // error instead and special case *only* modules with `#[rustc_doc_primitive]`, not all
         // primitives.
-        resolve_primitive(&path_root, TypeNS)
+        match resolve_primitive(&path_root, TypeNS)
             .or_else(|| self.resolve_path(&path_root, TypeNS, item_id, module_id))
             .and_then(|ty_res| {
-                self.resolve_associated_item(ty_res, item_name, ns, module_id).map(Ok)
-            })
-            .unwrap_or_else(|| {
+                let candidates = self
+                    .resolve_associated_item(ty_res, item_name, ns, module_id)
+                    .into_iter()
+                    .map(|(res, def_id)| (res, Some(def_id)))
+                    .collect::<Vec<_>>();
+                if !candidates.is_empty() { Some(candidates) } else { None }
+            }) {
+            Some(r) => Ok(r),
+            None => {
                 if ns == Namespace::ValueNS {
                     self.variant_field(path_str, item_id, module_id)
+                        .map(|(res, def_id)| vec![(res, Some(def_id))])
                 } else {
                     Err(UnresolvedPath {
                         item_id,
@@ -452,8 +479,8 @@ impl<'a, 'tcx> LinkCollector<'a, 'tcx> {
                         unresolved: path_root.into(),
                     })
                 }
-            })
-            .map(|(res, def_id)| (res, Some(def_id)))
+            }
+        }
     }
 
     /// Convert a DefId to a Res, where possible.
@@ -535,24 +562,31 @@ impl<'a, 'tcx> LinkCollector<'a, 'tcx> {
         item_name: Symbol,
         ns: Namespace,
         module_id: DefId,
-    ) -> Option<(Res, DefId)> {
+    ) -> Vec<(Res, DefId)> {
         let tcx = self.cx.tcx;
 
         match root_res {
             Res::Primitive(prim) => {
-                self.resolve_primitive_associated_item(prim, ns, item_name).or_else(|| {
+                let items = self.resolve_primitive_associated_item(prim, ns, item_name);
+                if !items.is_empty() {
+                    items
+                // Inherent associated items take precedence over items that come from trait impls.
+                } else {
                     self.primitive_type_to_ty(prim)
-                        .and_then(|ty| {
+                        .map(|ty| {
                             resolve_associated_trait_item(ty, module_id, item_name, ns, self.cx)
+                                .iter()
+                                .map(|item| (root_res, item.def_id))
+                                .collect::<Vec<_>>()
                         })
-                        .map(|item| (root_res, item.def_id))
-                })
+                        .unwrap_or(Vec::new())
+                }
             }
             Res::Def(DefKind::TyAlias, did) => {
                 // Resolve the link on the type the alias points to.
                 // FIXME: if the associated item is defined directly on the type alias,
                 // it will show up on its documentation page, we should link there instead.
-                let res = self.def_id_to_res(did)?;
+                let Some(res) = self.def_id_to_res(did) else { return Vec::new() };
                 self.resolve_associated_item(res, item_name, ns, module_id)
             }
             Res::Def(
@@ -566,7 +600,7 @@ impl<'a, 'tcx> LinkCollector<'a, 'tcx> {
                         ty::Adt(adt_def, _) => {
                             for variant in adt_def.variants() {
                                 if variant.name == item_name {
-                                    return Some((root_res, variant.def_id));
+                                    return vec![(root_res, variant.def_id)];
                                 }
                             }
                         }
@@ -575,43 +609,46 @@ impl<'a, 'tcx> LinkCollector<'a, 'tcx> {
                 }
 
                 // Checks if item_name belongs to `impl SomeItem`
-                let assoc_item = tcx
+                let mut assoc_items: Vec<_> = tcx
                     .inherent_impls(did)
                     .iter()
                     .flat_map(|&imp| {
-                        tcx.associated_items(imp).find_by_name_and_namespace(
+                        filter_assoc_items_by_name_and_namespace(
                             tcx,
+                            imp,
                             Ident::with_dummy_span(item_name),
                             ns,
-                            imp,
                         )
                     })
-                    .copied()
-                    // There should only ever be one associated item that matches from any inherent impl
-                    .next()
+                    .map(|item| (root_res, item.def_id))
+                    .collect();
+
+                if assoc_items.is_empty() {
                     // Check if item_name belongs to `impl SomeTrait for SomeItem`
                     // FIXME(#74563): This gives precedence to `impl SomeItem`:
                     // Although having both would be ambiguous, use impl version for compatibility's sake.
                     // To handle that properly resolve() would have to support
                     // something like [`ambi_fn`](<SomeStruct as SomeTrait>::ambi_fn)
-                    .or_else(|| {
-                        resolve_associated_trait_item(
-                            tcx.type_of(did).subst_identity(),
-                            module_id,
-                            item_name,
-                            ns,
-                            self.cx,
-                        )
-                    });
+                    assoc_items = resolve_associated_trait_item(
+                        tcx.type_of(did).subst_identity(),
+                        module_id,
+                        item_name,
+                        ns,
+                        self.cx,
+                    )
+                    .into_iter()
+                    .map(|item| (root_res, item.def_id))
+                    .collect::<Vec<_>>();
+                }
 
-                debug!("got associated item {:?}", assoc_item);
+                debug!("got associated item {:?}", assoc_items);
 
-                if let Some(item) = assoc_item {
-                    return Some((root_res, item.def_id));
+                if !assoc_items.is_empty() {
+                    return assoc_items;
                 }
 
                 if ns != Namespace::ValueNS {
-                    return None;
+                    return Vec::new();
                 }
                 debug!("looking for fields named {} for {:?}", item_name, did);
                 // FIXME: this doesn't really belong in `associated_item` (maybe `variant_field` is better?)
@@ -631,20 +668,27 @@ impl<'a, 'tcx> LinkCollector<'a, 'tcx> {
                 // field syntax) and are handled by the compiler's resolver.
                 let def = match tcx.type_of(did).subst_identity().kind() {
                     ty::Adt(def, _) if !def.is_enum() => def,
-                    _ => return None,
+                    _ => return Vec::new(),
                 };
-                let field =
-                    def.non_enum_variant().fields.iter().find(|item| item.name == item_name)?;
-                Some((root_res, field.did))
+                def.non_enum_variant()
+                    .fields
+                    .iter()
+                    .filter(|field| field.name == item_name)
+                    .map(|field| (root_res, field.did))
+                    .collect::<Vec<_>>()
             }
-            Res::Def(DefKind::Trait, did) => tcx
-                .associated_items(did)
-                .find_by_name_and_namespace(tcx, Ident::with_dummy_span(item_name), ns, did)
-                .map(|item| {
-                    let res = Res::Def(item.kind.as_def_kind(), item.def_id);
-                    (res, item.def_id)
-                }),
-            _ => None,
+            Res::Def(DefKind::Trait, did) => filter_assoc_items_by_name_and_namespace(
+                tcx,
+                did,
+                Ident::with_dummy_span(item_name),
+                ns,
+            )
+            .map(|item| {
+                let res = Res::Def(item.kind.as_def_kind(), item.def_id);
+                (res, item.def_id)
+            })
+            .collect::<Vec<_>>(),
+            _ => Vec::new(),
         }
     }
 }
@@ -664,7 +708,7 @@ fn resolve_associated_trait_item<'a>(
     item_name: Symbol,
     ns: Namespace,
     cx: &mut DocContext<'a>,
-) -> Option<ty::AssocItem> {
+) -> Vec<ty::AssocItem> {
     // FIXME: this should also consider blanket impls (`impl<T> X for T`). Unfortunately
     // `get_auto_trait_and_blanket_impls` is broken because the caching behavior is wrong. In the
     // meantime, just don't look for these blanket impls.
@@ -672,19 +716,26 @@ fn resolve_associated_trait_item<'a>(
     // Next consider explicit impls: `impl MyTrait for MyType`
     // Give precedence to inherent impls.
     let traits = trait_impls_for(cx, ty, module);
+    let tcx = cx.tcx;
     debug!("considering traits {:?}", traits);
-    let mut candidates = traits.iter().filter_map(|&(impl_, trait_)| {
-        cx.tcx
-            .associated_items(trait_)
-            .find_by_name_and_namespace(cx.tcx, Ident::with_dummy_span(item_name), ns, trait_)
-            .map(|trait_assoc| {
-                trait_assoc_to_impl_assoc_item(cx.tcx, impl_, trait_assoc.def_id)
+    let candidates = traits
+        .iter()
+        .flat_map(|&(impl_, trait_)| {
+            filter_assoc_items_by_name_and_namespace(
+                cx.tcx,
+                trait_,
+                Ident::with_dummy_span(item_name),
+                ns,
+            )
+            .map(move |trait_assoc| {
+                trait_assoc_to_impl_assoc_item(tcx, impl_, trait_assoc.def_id)
                     .unwrap_or(*trait_assoc)
             })
-    });
+        })
+        .collect::<Vec<_>>();
     // FIXME(#74563): warn about ambiguity
-    debug!("the candidates were {:?}", candidates.clone().collect::<Vec<_>>());
-    candidates.next()
+    debug!("the candidates were {:?}", candidates);
+    candidates
 }
 
 /// Find the associated item in the impl `impl_id` that corresponds to the
@@ -758,15 +809,15 @@ fn trait_impls_for<'a>(
 /// Check for resolve collisions between a trait and its derive.
 ///
 /// These are common and we should just resolve to the trait in that case.
-fn is_derive_trait_collision<T>(ns: &PerNS<Result<(Res, T), ResolutionFailure<'_>>>) -> bool {
-    matches!(
-        *ns,
-        PerNS {
-            type_ns: Ok((Res::Def(DefKind::Trait, _), _)),
-            macro_ns: Ok((Res::Def(DefKind::Macro(MacroKind::Derive), _), _)),
-            ..
-        }
-    )
+fn is_derive_trait_collision<T>(ns: &PerNS<Result<Vec<(Res, T)>, ResolutionFailure<'_>>>) -> bool {
+    if let (Ok(type_ns), Ok(macro_ns)) = (&ns.type_ns, &ns.macro_ns) {
+        type_ns.iter().any(|(res, _)| matches!(res, Res::Def(DefKind::Trait, _)))
+            && macro_ns
+                .iter()
+                .any(|(res, _)| matches!(res, Res::Def(DefKind::Macro(MacroKind::Derive), _)))
+    } else {
+        false
+    }
 }
 
 impl<'a, 'tcx> DocVisitor for LinkCollector<'a, 'tcx> {
@@ -927,7 +978,7 @@ impl LinkCollector<'_, '_> {
             for md_link in preprocessed_markdown_links(&doc) {
                 let link = self.resolve_link(item, item_id, module_id, &doc, &md_link);
                 if let Some(link) = link {
-                    self.cx.cache.intra_doc_links.entry(item.item_id).or_default().push(link);
+                    self.cx.cache.intra_doc_links.entry(item.item_id).or_default().insert(link);
                 }
             }
         }
@@ -987,15 +1038,15 @@ impl LinkCollector<'_, '_> {
                     res = prim;
                 } else {
                     // `[char]` when a `char` module is in scope
-                    let candidates = vec![res, prim];
-                    ambiguity_error(self.cx, diag_info, path_str, candidates);
+                    let candidates = &[(res, res.def_id(self.cx.tcx)), (prim, None)];
+                    ambiguity_error(self.cx, &diag_info, path_str, candidates);
                     return None;
                 }
             }
         }
 
         match res {
-            Res::Primitive(prim) => {
+            Res::Primitive(_) => {
                 if let Some(UrlFragment::Item(id)) = fragment {
                     // We're actually resolving an associated item of a primitive, so we need to
                     // verify the disambiguator (if any) matches the type of the associated item.
@@ -1015,15 +1066,6 @@ impl LinkCollector<'_, '_> {
                         item,
                         &diag_info,
                     )?;
-
-                    // FIXME: it would be nice to check that the feature gate was enabled in the original crate, not just ignore it altogether.
-                    // However I'm not sure how to check that across crates.
-                    if prim == PrimitiveType::RawPointer
-                        && item.item_id.is_local()
-                        && !self.cx.tcx.features().intra_doc_pointers
-                    {
-                        self.report_rawptr_assoc_feature_gate(dox, ori_link, item);
-                    }
                 } else {
                     match disambiguator {
                         Some(Disambiguator::Primitive | Disambiguator::Namespace(_)) | None => {}
@@ -1102,7 +1144,7 @@ impl LinkCollector<'_, '_> {
                 }
             }
 
-        // item can be non-local e.g. when using #[doc(primitive = "pointer")]
+        // item can be non-local e.g. when using `#[rustc_doc_primitive = "pointer"]`
         if let Some((src_id, dst_id)) = id.as_local().and_then(|dst_id| {
             item.item_id.expect_def_id().as_local().map(|src_id| (src_id, dst_id))
         }) {
@@ -1144,10 +1186,9 @@ impl LinkCollector<'_, '_> {
         report_diagnostic(self.cx.tcx, BROKEN_INTRA_DOC_LINKS, &msg, diag_info, callback);
     }
 
-    fn report_rawptr_assoc_feature_gate(&self, dox: &str, ori_link: &MarkdownLink, item: &Item) {
-        let span =
-            super::source_span_for_markdown_range(self.cx.tcx, dox, &ori_link.range, &item.attrs)
-                .unwrap_or_else(|| item.attr_span(self.cx.tcx));
+    fn report_rawptr_assoc_feature_gate(&self, dox: &str, ori_link: &Range<usize>, item: &Item) {
+        let span = super::source_span_for_markdown_range(self.cx.tcx, dox, ori_link, &item.attrs)
+            .unwrap_or_else(|| item.attr_span(self.cx.tcx));
         rustc_session::parse::feature_err(
             &self.cx.tcx.sess.parse_sess,
             sym::intra_doc_pointers,
@@ -1172,7 +1213,31 @@ impl LinkCollector<'_, '_> {
             }
         }
 
-        let res = self.resolve_with_disambiguator(&key, diag.clone()).and_then(|(res, def_id)| {
+        let mut candidates = self.resolve_with_disambiguator(&key, diag.clone());
+
+        // FIXME: it would be nice to check that the feature gate was enabled in the original crate, not just ignore it altogether.
+        // However I'm not sure how to check that across crates.
+        if let Some(candidate) = candidates.get(0) &&
+            candidate.0 == Res::Primitive(PrimitiveType::RawPointer) &&
+            key.path_str.contains("::") // We only want to check this if this is an associated item.
+        {
+            if key.item_id.is_local() && !self.cx.tcx.features().intra_doc_pointers {
+                self.report_rawptr_assoc_feature_gate(diag.dox, &diag.link_range, diag.item);
+                return None;
+            } else {
+                candidates = vec![candidates[0]];
+            }
+        }
+
+        // If there are multiple items with the same "kind" (for example, both "associated types")
+        // and after removing duplicated kinds, only one remains, the `ambiguity_error` function
+        // won't emit an error. So at this point, we can just take the first candidate as it was
+        // the first retrieved and use it to generate the link.
+        if candidates.len() > 1 && !ambiguity_error(self.cx, &diag, &key.path_str, &candidates) {
+            candidates = vec![candidates[0]];
+        }
+
+        if let &[(res, def_id)] = candidates.as_slice() {
             let fragment = match (&key.extra_fragment, def_id) {
                 (Some(_), Some(def_id)) => {
                     report_anchor_conflict(self.cx, diag, def_id);
@@ -1182,13 +1247,15 @@ impl LinkCollector<'_, '_> {
                 (None, Some(def_id)) => Some(UrlFragment::Item(def_id)),
                 (None, None) => None,
             };
-            Some((res, fragment))
-        });
+            let r = Some((res, fragment));
+            self.visited_links.insert(key, r.clone());
+            return r;
+        }
 
-        if res.is_some() || cache_errors {
-            self.visited_links.insert(key, res.clone());
+        if cache_errors {
+            self.visited_links.insert(key, None);
         }
-        res
+        None
     }
 
     /// After parsing the disambiguator, resolve the main part of the link.
@@ -1197,7 +1264,7 @@ impl LinkCollector<'_, '_> {
         &mut self,
         key: &ResolutionInfo,
         diag: DiagnosticInfo<'_>,
-    ) -> Option<(Res, Option<DefId>)> {
+    ) -> Vec<(Res, Option<DefId>)> {
         let disambiguator = key.dis;
         let path_str = &key.path_str;
         let item_id = key.item_id;
@@ -1206,7 +1273,7 @@ impl LinkCollector<'_, '_> {
         match disambiguator.map(Disambiguator::ns) {
             Some(expected_ns) => {
                 match self.resolve(path_str, expected_ns, item_id, module_id) {
-                    Ok(res) => Some(res),
+                    Ok(candidates) => candidates,
                     Err(err) => {
                         // We only looked in one namespace. Try to give a better error if possible.
                         // FIXME: really it should be `resolution_failure` that does this, not `resolve_with_disambiguator`.
@@ -1215,10 +1282,11 @@ impl LinkCollector<'_, '_> {
                         for other_ns in [TypeNS, ValueNS, MacroNS] {
                             if other_ns != expected_ns {
                                 if let Ok(res) =
-                                    self.resolve(path_str, other_ns, item_id, module_id)
+                                    self.resolve(path_str, other_ns, item_id, module_id) &&
+                                    !res.is_empty()
                                 {
                                     err = ResolutionFailure::WrongNamespace {
-                                        res: full_res(self.cx.tcx, res),
+                                        res: full_res(self.cx.tcx, res[0]),
                                         expected_ns,
                                     };
                                     break;
@@ -1239,18 +1307,26 @@ impl LinkCollector<'_, '_> {
                 let candidates = PerNS {
                     macro_ns: candidate(MacroNS),
                     type_ns: candidate(TypeNS),
-                    value_ns: candidate(ValueNS).and_then(|(res, def_id)| {
-                        match res {
-                            // Constructors are picked up in the type namespace.
-                            Res::Def(DefKind::Ctor(..), _) => {
-                                Err(ResolutionFailure::WrongNamespace { res, expected_ns: TypeNS })
+                    value_ns: candidate(ValueNS).and_then(|v_res| {
+                        for (res, _) in v_res.iter() {
+                            match res {
+                                // Constructors are picked up in the type namespace.
+                                Res::Def(DefKind::Ctor(..), _) => {
+                                    return Err(ResolutionFailure::WrongNamespace {
+                                        res: *res,
+                                        expected_ns: TypeNS,
+                                    });
+                                }
+                                _ => {}
                             }
-                            _ => Ok((res, def_id)),
                         }
+                        Ok(v_res)
                     }),
                 };
 
-                let len = candidates.iter().filter(|res| res.is_ok()).count();
+                let len = candidates
+                    .iter()
+                    .fold(0, |acc, res| if let Ok(res) = res { acc + res.len() } else { acc });
 
                 if len == 0 {
                     return resolution_failure(
@@ -1260,22 +1336,21 @@ impl LinkCollector<'_, '_> {
                         disambiguator,
                         candidates.into_iter().filter_map(|res| res.err()).collect(),
                     );
-                }
-
-                if len == 1 {
-                    Some(candidates.into_iter().find_map(|res| res.ok()).unwrap())
-                } else if len == 2 && is_derive_trait_collision(&candidates) {
-                    Some(candidates.type_ns.unwrap())
+                } else if len == 1 {
+                    candidates.into_iter().filter_map(|res| res.ok()).flatten().collect::<Vec<_>>()
                 } else {
-                    let ignore_macro = is_derive_trait_collision(&candidates);
-                    // If we're reporting an ambiguity, don't mention the namespaces that failed
-                    let mut candidates =
-                        candidates.map(|candidate| candidate.ok().map(|(res, _)| res));
-                    if ignore_macro {
-                        candidates.macro_ns = None;
+                    let has_derive_trait_collision = is_derive_trait_collision(&candidates);
+                    if len == 2 && has_derive_trait_collision {
+                        candidates.type_ns.unwrap()
+                    } else {
+                        // If we're reporting an ambiguity, don't mention the namespaces that failed
+                        let mut candidates = candidates.map(|candidate| candidate.ok());
+                        // If there a collision between a trait and a derive, we ignore the derive.
+                        if has_derive_trait_collision {
+                            candidates.macro_ns = None;
+                        }
+                        candidates.into_iter().filter_map(|res| res).flatten().collect::<Vec<_>>()
                     }
-                    ambiguity_error(self.cx, diag, path_str, candidates.present_items().collect());
-                    None
                 }
             }
         }
@@ -1563,7 +1638,7 @@ fn resolution_failure(
     path_str: &str,
     disambiguator: Option<Disambiguator>,
     kinds: SmallVec<[ResolutionFailure<'_>; 3]>,
-) -> Option<(Res, Option<DefId>)> {
+) -> Vec<(Res, Option<DefId>)> {
     let tcx = collector.cx.tcx;
     let mut recovered_res = None;
     report_diagnostic(
@@ -1622,11 +1697,13 @@ fn resolution_failure(
                         };
                         name = start;
                         for ns in [TypeNS, ValueNS, MacroNS] {
-                            if let Ok(res) = collector.resolve(start, ns, item_id, module_id) {
-                                debug!("found partial_res={:?}", res);
-                                *partial_res = Some(full_res(collector.cx.tcx, res));
-                                *unresolved = end.into();
-                                break 'outer;
+                            if let Ok(v_res) = collector.resolve(start, ns, item_id, module_id) {
+                                debug!("found partial_res={:?}", v_res);
+                                if !v_res.is_empty() {
+                                    *partial_res = Some(full_res(collector.cx.tcx, v_res[0]));
+                                    *unresolved = end.into();
+                                    break 'outer;
+                                }
                             }
                         }
                         *unresolved = end.into();
@@ -1774,7 +1851,10 @@ fn resolution_failure(
         },
     );
 
-    recovered_res
+    match recovered_res {
+        Some(r) => vec![r],
+        None => Vec::new(),
+    }
 }
 
 fn report_multiple_anchors(cx: &DocContext<'_>, diag_info: DiagnosticInfo<'_>) {
@@ -1859,28 +1939,47 @@ fn report_malformed_generics(
 }
 
 /// Report an ambiguity error, where there were multiple possible resolutions.
+///
+/// If all `candidates` have the same kind, it's not possible to disambiguate so in this case,
+/// the function won't emit an error and will return `false`. Otherwise, it'll emit the error and
+/// return `true`.
 fn ambiguity_error(
     cx: &DocContext<'_>,
-    diag_info: DiagnosticInfo<'_>,
+    diag_info: &DiagnosticInfo<'_>,
     path_str: &str,
-    candidates: Vec<Res>,
-) {
-    let mut msg = format!("`{}` is ", path_str);
+    candidates: &[(Res, Option<DefId>)],
+) -> bool {
+    let mut descrs = FxHashSet::default();
+    let kinds = candidates
+        .iter()
+        .map(
+            |(res, def_id)| {
+                if let Some(def_id) = def_id { Res::from_def_id(cx.tcx, *def_id) } else { *res }
+            },
+        )
+        .filter(|res| descrs.insert(res.descr()))
+        .collect::<Vec<_>>();
+    if descrs.len() == 1 {
+        // There is no way for users to disambiguate at this point, so better return the first
+        // candidate and not show a warning.
+        return false;
+    }
 
-    match candidates.as_slice() {
-        [first_def, second_def] => {
+    let mut msg = format!("`{}` is ", path_str);
+    match kinds.as_slice() {
+        [res1, res2] => {
             msg += &format!(
                 "both {} {} and {} {}",
-                first_def.article(),
-                first_def.descr(),
-                second_def.article(),
-                second_def.descr(),
+                res1.article(),
+                res1.descr(),
+                res2.article(),
+                res2.descr()
             );
         }
         _ => {
-            let mut candidates = candidates.iter().peekable();
-            while let Some(res) = candidates.next() {
-                if candidates.peek().is_some() {
+            let mut kinds = kinds.iter().peekable();
+            while let Some(res) = kinds.next() {
+                if kinds.peek().is_some() {
                     msg += &format!("{} {}, ", res.article(), res.descr());
                 } else {
                     msg += &format!("and {} {}", res.article(), res.descr());
@@ -1889,17 +1988,18 @@ fn ambiguity_error(
         }
     }
 
-    report_diagnostic(cx.tcx, BROKEN_INTRA_DOC_LINKS, &msg, &diag_info, |diag, sp| {
+    report_diagnostic(cx.tcx, BROKEN_INTRA_DOC_LINKS, &msg, diag_info, |diag, sp| {
         if let Some(sp) = sp {
             diag.span_label(sp, "ambiguous link");
         } else {
             diag.note("ambiguous link");
         }
 
-        for res in candidates {
+        for res in kinds {
             suggest_disambiguator(res, diag, path_str, diag_info.ori_link, sp);
         }
     });
+    true
 }
 
 /// In case of an ambiguity or mismatched disambiguator, suggest the correct
diff --git a/src/librustdoc/visit_ast.rs b/src/librustdoc/visit_ast.rs
index 060062db002..c959bb3701a 100644
--- a/src/librustdoc/visit_ast.rs
+++ b/src/librustdoc/visit_ast.rs
@@ -421,12 +421,20 @@ impl<'a, 'tcx> RustdocVisitor<'a, 'tcx> {
             | hir::ItemKind::Struct(..)
             | hir::ItemKind::Union(..)
             | hir::ItemKind::TyAlias(..)
-            | hir::ItemKind::OpaqueTy(..)
+            | hir::ItemKind::OpaqueTy(hir::OpaqueTy {
+                origin: hir::OpaqueTyOrigin::TyAlias, ..
+            })
             | hir::ItemKind::Static(..)
             | hir::ItemKind::Trait(..)
             | hir::ItemKind::TraitAlias(..) => {
                 self.add_to_current_mod(item, renamed, import_id);
             }
+            hir::ItemKind::OpaqueTy(hir::OpaqueTy {
+                origin: hir::OpaqueTyOrigin::AsyncFn(_) | hir::OpaqueTyOrigin::FnReturn(_),
+                ..
+            }) => {
+                // return-position impl traits are never nameable, and should never be documented.
+            }
             hir::ItemKind::Const(..) => {
                 // Underscore constants do not correspond to a nameable item and
                 // so are never useful in documentation.
diff --git a/src/tools/cargo b/src/tools/cargo
-Subproject 145219a9f089f8b57c09f40525374fbade1e34a
+Subproject 0e474cfd7b16b018cf46e95da3f6a5b2f1f6a9e
diff --git a/src/tools/clippy/clippy_lints/src/redundant_static_lifetimes.rs b/src/tools/clippy/clippy_lints/src/redundant_static_lifetimes.rs
index 44bf824aa0e..11b908e7e53 100644
--- a/src/tools/clippy/clippy_lints/src/redundant_static_lifetimes.rs
+++ b/src/tools/clippy/clippy_lints/src/redundant_static_lifetimes.rs
@@ -1,7 +1,7 @@
 use clippy_utils::diagnostics::span_lint_and_then;
 use clippy_utils::msrvs::{self, Msrv};
 use clippy_utils::source::snippet;
-use rustc_ast::ast::{Item, ItemKind, Ty, TyKind};
+use rustc_ast::ast::{Item, ItemKind, Ty, TyKind, StaticItem, ConstItem};
 use rustc_errors::Applicability;
 use rustc_lint::{EarlyContext, EarlyLintPass};
 use rustc_session::{declare_tool_lint, impl_lint_pass};
@@ -100,13 +100,13 @@ impl EarlyLintPass for RedundantStaticLifetimes {
         }
 
         if !item.span.from_expansion() {
-            if let ItemKind::Const(_, ref var_type, _) = item.kind {
+            if let ItemKind::Const(box ConstItem { ty: ref var_type, .. }) = item.kind {
                 Self::visit_type(var_type, cx, "constants have by default a `'static` lifetime");
                 // Don't check associated consts because `'static` cannot be elided on those (issue
                 // #2438)
             }
 
-            if let ItemKind::Static(ref var_type, _, _) = item.kind {
+            if let ItemKind::Static(box StaticItem { ty: ref var_type,.. }) = item.kind {
                 Self::visit_type(var_type, cx, "statics have by default a `'static` lifetime");
             }
         }
diff --git a/src/tools/clippy/clippy_lints/src/ref_option_ref.rs b/src/tools/clippy/clippy_lints/src/ref_option_ref.rs
index 448a32b77c0..c984a8286eb 100644
--- a/src/tools/clippy/clippy_lints/src/ref_option_ref.rs
+++ b/src/tools/clippy/clippy_lints/src/ref_option_ref.rs
@@ -3,7 +3,7 @@ use clippy_utils::last_path_segment;
 use clippy_utils::source::snippet;
 use if_chain::if_chain;
 use rustc_errors::Applicability;
-use rustc_hir::{GenericArg, Mutability, Ty, TyKind};
+use rustc_hir::{GenericArg, GenericArgsParentheses, Mutability, Ty, TyKind};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
 use rustc_span::symbol::sym;
@@ -47,7 +47,7 @@ impl<'tcx> LateLintPass<'tcx> for RefOptionRef {
 
             if cx.tcx.is_diagnostic_item(sym::Option, def_id);
             if let Some(params) = last_path_segment(qpath).args ;
-            if !params.parenthesized;
+            if params.parenthesized == GenericArgsParentheses::No;
             if let Some(inner_ty) = params.args.iter().find_map(|arg| match arg {
                 GenericArg::Type(inner_ty) => Some(inner_ty),
                 _ => None,
diff --git a/src/tools/clippy/clippy_lints/src/types/borrowed_box.rs b/src/tools/clippy/clippy_lints/src/types/borrowed_box.rs
index 65dfe7637ea..acdf5471069 100644
--- a/src/tools/clippy/clippy_lints/src/types/borrowed_box.rs
+++ b/src/tools/clippy/clippy_lints/src/types/borrowed_box.rs
@@ -20,7 +20,7 @@ pub(super) fn check(cx: &LateContext<'_>, hir_ty: &hir::Ty<'_>, lt: &Lifetime, m
                 if let QPath::Resolved(None, path) = *qpath;
                 if let [ref bx] = *path.segments;
                 if let Some(params) = bx.args;
-                if !params.parenthesized;
+                if params.parenthesized == hir::GenericArgsParentheses::No;
                 if let Some(inner) = params.args.iter().find_map(|arg| match arg {
                     GenericArg::Type(ty) => Some(ty),
                     _ => None,
diff --git a/src/tools/clippy/clippy_lints/src/types/utils.rs b/src/tools/clippy/clippy_lints/src/types/utils.rs
index 7f43b7841ff..a30748db88f 100644
--- a/src/tools/clippy/clippy_lints/src/types/utils.rs
+++ b/src/tools/clippy/clippy_lints/src/types/utils.rs
@@ -1,6 +1,6 @@
 use clippy_utils::last_path_segment;
 use if_chain::if_chain;
-use rustc_hir::{GenericArg, QPath, TyKind};
+use rustc_hir::{GenericArg, GenericArgsParentheses, QPath, TyKind};
 use rustc_lint::LateContext;
 use rustc_span::source_map::Span;
 
@@ -8,7 +8,7 @@ pub(super) fn match_borrows_parameter(_cx: &LateContext<'_>, qpath: &QPath<'_>)
     let last = last_path_segment(qpath);
     if_chain! {
         if let Some(params) = last.args;
-        if !params.parenthesized;
+        if params.parenthesized == GenericArgsParentheses::No;
         if let Some(ty) = params.args.iter().find_map(|arg| match arg {
             GenericArg::Type(ty) => Some(ty),
             _ => None,
diff --git a/src/tools/clippy/clippy_lints/src/use_self.rs b/src/tools/clippy/clippy_lints/src/use_self.rs
index 8ea5475fb25..7dfb0956077 100644
--- a/src/tools/clippy/clippy_lints/src/use_self.rs
+++ b/src/tools/clippy/clippy_lints/src/use_self.rs
@@ -10,7 +10,7 @@ use rustc_hir::{
     def::{CtorOf, DefKind, Res},
     def_id::LocalDefId,
     intravisit::{walk_inf, walk_ty, Visitor},
-    Expr, ExprKind, FnRetTy, FnSig, GenericArg, GenericParam, GenericParamKind, HirId, Impl, ImplItemKind, Item,
+    Expr, ExprKind, FnRetTy, FnSig, GenericArg, GenericArgsParentheses, GenericParam, GenericParamKind, HirId, Impl, ImplItemKind, Item,
     ItemKind, Pat, PatKind, Path, QPath, Ty, TyKind,
 };
 use rustc_hir_analysis::hir_ty_to_ty;
@@ -100,7 +100,8 @@ impl<'tcx> LateLintPass<'tcx> for UseSelf {
             if let TyKind::Path(QPath::Resolved(_, item_path)) = self_ty.kind;
             let parameters = &item_path.segments.last().expect(SEGMENTS_MSG).args;
             if parameters.as_ref().map_or(true, |params| {
-                !params.parenthesized && !params.args.iter().any(|arg| matches!(arg, GenericArg::Lifetime(_)))
+                params.parenthesized  == GenericArgsParentheses::No
+                    && !params.args.iter().any(|arg| matches!(arg, GenericArg::Lifetime(_)))
             });
             if !item.span.from_expansion();
             if !is_from_proc_macro(cx, item); // expensive, should be last check
diff --git a/src/tools/clippy/clippy_utils/src/ast_utils.rs b/src/tools/clippy/clippy_utils/src/ast_utils.rs
index d2dedc20439..c5b58b0c060 100644
--- a/src/tools/clippy/clippy_utils/src/ast_utils.rs
+++ b/src/tools/clippy/clippy_utils/src/ast_utils.rs
@@ -286,8 +286,8 @@ pub fn eq_item_kind(l: &ItemKind, r: &ItemKind) -> bool {
     match (l, r) {
         (ExternCrate(l), ExternCrate(r)) => l == r,
         (Use(l), Use(r)) => eq_use_tree(l, r),
-        (Static(lt, lm, le), Static(rt, rm, re)) => lm == rm && eq_ty(lt, rt) && eq_expr_opt(le, re),
-        (Const(ld, lt, le), Const(rd, rt, re)) => eq_defaultness(*ld, *rd) && eq_ty(lt, rt) && eq_expr_opt(le, re),
+        (Static(box ast::StaticItem { ty: lt, mutability: lm, expr: le}), Static(box ast::StaticItem { ty: rt, mutability: rm, expr: re})) => lm == rm && eq_ty(lt, rt) && eq_expr_opt(le, re),
+        (Const(box ast::ConstItem { defaultness: ld, ty: lt, expr: le}), Const(box ast::ConstItem { defaultness: rd, ty: rt, expr: re} )) => eq_defaultness(*ld, *rd) && eq_ty(lt, rt) && eq_expr_opt(le, re),
         (
             Fn(box ast::Fn {
                 defaultness: ld,
@@ -451,7 +451,7 @@ pub fn eq_foreign_item_kind(l: &ForeignItemKind, r: &ForeignItemKind) -> bool {
 pub fn eq_assoc_item_kind(l: &AssocItemKind, r: &AssocItemKind) -> bool {
     use AssocItemKind::*;
     match (l, r) {
-        (Const(ld, lt, le), Const(rd, rt, re)) => eq_defaultness(*ld, *rd) && eq_ty(lt, rt) && eq_expr_opt(le, re),
+        (Const(box ast::ConstItem { defaultness: ld, ty: lt, expr: le}), Const(box ast::ConstItem { defaultness: rd, ty: rt, expr: re})) => eq_defaultness(*ld, *rd) && eq_ty(lt, rt) && eq_expr_opt(le, re),
         (
             Fn(box ast::Fn {
                 defaultness: ld,
diff --git a/src/tools/clippy/clippy_utils/src/hir_utils.rs b/src/tools/clippy/clippy_utils/src/hir_utils.rs
index 3a6d23ca5c1..3ee7147828b 100644
--- a/src/tools/clippy/clippy_utils/src/hir_utils.rs
+++ b/src/tools/clippy/clippy_utils/src/hir_utils.rs
@@ -401,14 +401,9 @@ impl HirEqInterExpr<'_, '_, '_> {
     }
 
     fn eq_path_parameters(&mut self, left: &GenericArgs<'_>, right: &GenericArgs<'_>) -> bool {
-        if !(left.parenthesized || right.parenthesized) {
+        if left.parenthesized == right.parenthesized {
             over(left.args, right.args, |l, r| self.eq_generic_arg(l, r)) // FIXME(flip1995): may not work
                 && over(left.bindings, right.bindings, |l, r| self.eq_type_binding(l, r))
-        } else if left.parenthesized && right.parenthesized {
-            over(left.inputs(), right.inputs(), |l, r| self.eq_ty(l, r))
-                && both(&Some(&left.bindings[0].ty()), &Some(&right.bindings[0].ty()), |l, r| {
-                    self.eq_ty(l, r)
-                })
         } else {
             false
         }
diff --git a/src/tools/compiletest/src/util.rs b/src/tools/compiletest/src/util.rs
index 5f6a27e5366..748240cc94b 100644
--- a/src/tools/compiletest/src/util.rs
+++ b/src/tools/compiletest/src/util.rs
@@ -156,6 +156,8 @@ pub fn dylib_env_var() -> &'static str {
         "DYLD_LIBRARY_PATH"
     } else if cfg!(target_os = "haiku") {
         "LIBRARY_PATH"
+    } else if cfg!(target_os = "aix") {
+        "LIBPATH"
     } else {
         "LD_LIBRARY_PATH"
     }
diff --git a/src/tools/miri/Cargo.toml b/src/tools/miri/Cargo.toml
index 717020f43c4..6705bf7b007 100644
--- a/src/tools/miri/Cargo.toml
+++ b/src/tools/miri/Cargo.toml
@@ -34,7 +34,7 @@ measureme = "10.0.0"
 libc = "0.2"
 
 [target.'cfg(target_os = "linux")'.dependencies]
-libffi = "3.0.0"
+libffi = "3.2.0"
 libloading = "0.7"
 
 [dev-dependencies]
diff --git a/src/tools/rust-installer/src/compression.rs b/src/tools/rust-installer/src/compression.rs
index 510c914163c..7c9c946e0b5 100644
--- a/src/tools/rust-installer/src/compression.rs
+++ b/src/tools/rust-installer/src/compression.rs
@@ -89,43 +89,11 @@ impl CompressionFormat {
                         xz2::stream::MtStreamBuilder::new().threads(6).preset(6).encoder().unwrap()
                     }
                     CompressionProfile::Best => {
-                        let mut filters = xz2::stream::Filters::new();
-                        // the preset is overridden by the other options so it doesn't matter
-                        let mut lzma_ops = xz2::stream::LzmaOptions::new_preset(9).unwrap();
-                        // This sets the overall dictionary size, which is also how much memory (baseline)
-                        // is needed for decompression.
-                        lzma_ops.dict_size(64 * 1024 * 1024);
-                        // Use the best match finder for compression ratio.
-                        lzma_ops.match_finder(xz2::stream::MatchFinder::BinaryTree4);
-                        lzma_ops.mode(xz2::stream::Mode::Normal);
-                        // Set nice len to the maximum for best compression ratio
-                        lzma_ops.nice_len(273);
-                        // Set depth to a reasonable value, 0 means auto, 1000 is somwhat high but gives
-                        // good results.
-                        lzma_ops.depth(1000);
-                        // 2 is the default and does well for most files
-                        lzma_ops.position_bits(2);
-                        // 0 is the default and does well for most files
-                        lzma_ops.literal_position_bits(0);
-                        // 3 is the default and does well for most files
-                        lzma_ops.literal_context_bits(3);
-
-                        filters.lzma2(&lzma_ops);
-
-                        let mut builder = xz2::stream::MtStreamBuilder::new();
-                        builder.filters(filters);
-
-                        // On 32-bit platforms limit ourselves to 3 threads, otherwise we exceed memory
-                        // usage this process can take. In the future we'll likely only do super-fast
-                        // compression in CI and move this heavyweight processing to promote-release (which
-                        // is always 64-bit and can run on big-memory machines) but for now this lets us
-                        // move forward.
-                        if std::mem::size_of::<usize>() == 4 {
-                            builder.threads(3);
-                        } else {
-                            builder.threads(6);
-                        }
-                        builder.encoder().unwrap()
+                        // Note that this isn't actually the best compression settings for the
+                        // produced artifacts, the production artifacts on static.rust-lang.org are
+                        // produced by rust-lang/promote-release which hosts recompression logic
+                        // and is tuned for optimal compression.
+                        xz2::stream::MtStreamBuilder::new().threads(6).preset(9).encoder().unwrap()
                     }
                 };
 
@@ -245,20 +213,14 @@ impl Write for CombinedEncoder {
     }
 
     fn flush(&mut self) -> std::io::Result<()> {
-        self.encoders
-            .par_iter_mut()
-            .map(|w| w.flush())
-            .collect::<std::io::Result<Vec<()>>>()?;
+        self.encoders.par_iter_mut().map(|w| w.flush()).collect::<std::io::Result<Vec<()>>>()?;
         Ok(())
     }
 }
 
 impl Encoder for CombinedEncoder {
     fn finish(self: Box<Self>) -> Result<(), Error> {
-        self.encoders
-            .into_par_iter()
-            .map(|e| e.finish())
-            .collect::<Result<Vec<()>, Error>>()?;
+        self.encoders.into_par_iter().map(|e| e.finish()).collect::<Result<Vec<()>, Error>>()?;
         Ok(())
     }
 }
diff --git a/src/tools/rustfmt/src/items.rs b/src/tools/rustfmt/src/items.rs
index 25e8a024857..43779cfaecd 100644
--- a/src/tools/rustfmt/src/items.rs
+++ b/src/tools/rustfmt/src/items.rs
@@ -1804,13 +1804,15 @@ pub(crate) struct StaticParts<'a> {
 
 impl<'a> StaticParts<'a> {
     pub(crate) fn from_item(item: &'a ast::Item) -> Self {
-        let (defaultness, prefix, ty, mutability, expr) = match item.kind {
-            ast::ItemKind::Static(ref ty, mutability, ref expr) => {
-                (None, "static", ty, mutability, expr)
-            }
-            ast::ItemKind::Const(defaultness, ref ty, ref expr) => {
-                (Some(defaultness), "const", ty, ast::Mutability::Not, expr)
-            }
+        let (defaultness, prefix, ty, mutability, expr) = match &item.kind {
+            ast::ItemKind::Static(s) => (None, "static", &s.ty, s.mutability, &s.expr),
+            ast::ItemKind::Const(c) => (
+                Some(c.defaultness),
+                "const",
+                &c.ty,
+                ast::Mutability::Not,
+                &c.expr,
+            ),
             _ => unreachable!(),
         };
         StaticParts {
@@ -1826,10 +1828,8 @@ impl<'a> StaticParts<'a> {
     }
 
     pub(crate) fn from_trait_item(ti: &'a ast::AssocItem) -> Self {
-        let (defaultness, ty, expr_opt) = match ti.kind {
-            ast::AssocItemKind::Const(defaultness, ref ty, ref expr_opt) => {
-                (defaultness, ty, expr_opt)
-            }
+        let (defaultness, ty, expr_opt) = match &ti.kind {
+            ast::AssocItemKind::Const(c) => (c.defaultness, &c.ty, &c.expr),
             _ => unreachable!(),
         };
         StaticParts {
@@ -1845,8 +1845,8 @@ impl<'a> StaticParts<'a> {
     }
 
     pub(crate) fn from_impl_item(ii: &'a ast::AssocItem) -> Self {
-        let (defaultness, ty, expr) = match ii.kind {
-            ast::AssocItemKind::Const(defaultness, ref ty, ref expr) => (defaultness, ty, expr),
+        let (defaultness, ty, expr) = match &ii.kind {
+            ast::AssocItemKind::Const(c) => (c.defaultness, &c.ty, &c.expr),
             _ => unreachable!(),
         };
         StaticParts {
diff --git a/src/tools/tidy/src/ui_tests.rs b/src/tools/tidy/src/ui_tests.rs
index 20b8a2c3b24..f582666ab28 100644
--- a/src/tools/tidy/src/ui_tests.rs
+++ b/src/tools/tidy/src/ui_tests.rs
@@ -9,7 +9,7 @@ use std::path::{Path, PathBuf};
 
 const ENTRY_LIMIT: usize = 1000;
 // FIXME: The following limits should be reduced eventually.
-const ROOT_ENTRY_LIMIT: usize = 940;
+const ROOT_ENTRY_LIMIT: usize = 881;
 const ISSUES_ENTRY_LIMIT: usize = 1978;
 
 fn check_entries(tests_path: &Path, bad: &mut bool) {
diff --git a/tests/codegen/debug-limited.rs b/tests/codegen/debug-limited.rs
new file mode 100644
index 00000000000..48d676887fd
--- /dev/null
+++ b/tests/codegen/debug-limited.rs
@@ -0,0 +1,27 @@
+// Verify that the limited debuginfo option emits llvm's FullDebugInfo, but no type info.
+//
+// compile-flags: -C debuginfo=limited
+
+#[repr(C)]
+struct StructType {
+    a: i64,
+    b: i32,
+}
+
+extern "C" {
+    fn creator() -> *mut StructType;
+    fn save(p: *const StructType);
+}
+
+fn main() {
+    unsafe {
+        let value: &mut StructType = &mut *creator();
+        value.a = 7;
+        save(value as *const StructType)
+    }
+}
+
+// CHECK: !DICompileUnit
+// CHECK: emissionKind: FullDebug
+// CHECK: !DILocation
+// CHECK-NOT: !DIBasicType
diff --git a/tests/codegen/debug-line-directives-only.rs b/tests/codegen/debug-line-directives-only.rs
new file mode 100644
index 00000000000..750bdd49de0
--- /dev/null
+++ b/tests/codegen/debug-line-directives-only.rs
@@ -0,0 +1,27 @@
+// Verify that the only debuginfo generated are the line directives.
+//
+// compile-flags: -C debuginfo=line-directives-only
+
+#[repr(C)]
+struct StructType {
+    a: i64,
+    b: i32,
+}
+
+extern "C" {
+    fn creator() -> *mut StructType;
+    fn save(p: *const StructType);
+}
+
+fn main() {
+    unsafe {
+        let value: &mut StructType = &mut *creator();
+        value.a = 7;
+        save(value as *const StructType)
+    }
+}
+
+// CHECK: !DICompileUnit
+// CHECK: emissionKind: DebugDirectivesOnly
+// CHECK: !DILocation
+// CHECK-NOT: !DIBasicType
diff --git a/tests/codegen/debug-line-tables-only.rs b/tests/codegen/debug-line-tables-only.rs
new file mode 100644
index 00000000000..3ed165a6f69
--- /dev/null
+++ b/tests/codegen/debug-line-tables-only.rs
@@ -0,0 +1,27 @@
+// Verify that the only debuginfo generated are the line tables.
+//
+// compile-flags: -C debuginfo=line-tables-only
+
+#[repr(C)]
+struct StructType {
+    a: i64,
+    b: i32,
+}
+
+extern "C" {
+    fn creator() -> *mut StructType;
+    fn save(p: *const StructType);
+}
+
+fn main() {
+    unsafe {
+        let value: &mut StructType = &mut *creator();
+        value.a = 7;
+        save(value as *const StructType)
+    }
+}
+
+// CHECK: !DICompileUnit
+// CHECK: emissionKind: LineTablesOnly
+// CHECK: !DILocation
+// CHECK-NOT: !DIBasicType
diff --git a/tests/codegen/vec-in-place.rs b/tests/codegen/vec-in-place.rs
index 9992604221b..d68067ceb19 100644
--- a/tests/codegen/vec-in-place.rs
+++ b/tests/codegen/vec-in-place.rs
@@ -1,11 +1,13 @@
 // ignore-debug: the debug assertions get in the way
 // compile-flags: -O -Z merge-functions=disabled
+// min-llvm-version: 16
 #![crate_type = "lib"]
 
 // Ensure that trivial casts of vec elements are O(1)
 
 pub struct Wrapper<T>(T);
 
+// previously repr(C) caused the optimization to fail
 #[repr(C)]
 pub struct Foo {
     a: u64,
@@ -14,9 +16,8 @@ pub struct Foo {
     d: u64,
 }
 
-// Going from an aggregate struct to another type currently requires Copy to
-// enable the TrustedRandomAccess specialization. Without it optimizations do not yet
-// reliably recognize the loops as noop for repr(C) or non-Copy structs.
+// implementing Copy exercises the TrustedRandomAccess specialization inside the in-place
+// specialization
 #[derive(Copy, Clone)]
 pub struct Bar {
     a: u64,
@@ -25,6 +26,14 @@ pub struct Bar {
     d: u64,
 }
 
+// this exercises the try-fold codepath
+pub struct Baz {
+    a: u64,
+    b: u64,
+    c: u64,
+    d: u64,
+}
+
 // CHECK-LABEL: @vec_iterator_cast_primitive
 #[no_mangle]
 pub fn vec_iterator_cast_primitive(vec: Vec<i8>) -> Vec<u8> {
@@ -52,18 +61,29 @@ pub fn vec_iterator_cast_unwrap(vec: Vec<Wrapper<u8>>) -> Vec<u8> {
 // CHECK-LABEL: @vec_iterator_cast_aggregate
 #[no_mangle]
 pub fn vec_iterator_cast_aggregate(vec: Vec<[u64; 4]>) -> Vec<Foo> {
-    // FIXME These checks should be the same as other functions.
-    // CHECK-NOT: @__rust_alloc
-    // CHECK-NOT: @__rust_alloc
+    // CHECK-NOT: loop
+    // CHECK-NOT: call
     vec.into_iter().map(|e| unsafe { std::mem::transmute(e) }).collect()
 }
 
-// CHECK-LABEL: @vec_iterator_cast_deaggregate
+// CHECK-LABEL: @vec_iterator_cast_deaggregate_tra
 #[no_mangle]
-pub fn vec_iterator_cast_deaggregate(vec: Vec<Bar>) -> Vec<[u64; 4]> {
-    // FIXME These checks should be the same as other functions.
-    // CHECK-NOT: @__rust_alloc
-    // CHECK-NOT: @__rust_alloc
+pub fn vec_iterator_cast_deaggregate_tra(vec: Vec<Bar>) -> Vec<[u64; 4]> {
+    // CHECK-NOT: loop
+    // CHECK-NOT: call
+
+    // Safety: For the purpose of this test we assume that Bar layout matches [u64; 4].
+    // This currently is not guaranteed for repr(Rust) types, but it happens to work here and
+    // the UCG may add additional guarantees for homogenous types in the future that would make this
+    // correct.
+    vec.into_iter().map(|e| unsafe { std::mem::transmute(e) }).collect()
+}
+
+// CHECK-LABEL: @vec_iterator_cast_deaggregate_fold
+#[no_mangle]
+pub fn vec_iterator_cast_deaggregate_fold(vec: Vec<Baz>) -> Vec<[u64; 4]> {
+    // CHECK-NOT: loop
+    // CHECK-NOT: call
 
     // Safety: For the purpose of this test we assume that Bar layout matches [u64; 4].
     // This currently is not guaranteed for repr(Rust) types, but it happens to work here and
diff --git a/tests/run-make-fulldeps/hotplug_codegen_backend/Makefile b/tests/run-make-fulldeps/hotplug_codegen_backend/Makefile
index 4cda243ffb5..6752091e699 100644
--- a/tests/run-make-fulldeps/hotplug_codegen_backend/Makefile
+++ b/tests/run-make-fulldeps/hotplug_codegen_backend/Makefile
@@ -1,4 +1,4 @@
-include ../tools.mk
+include ../../run-make/tools.mk
 
 # ignore-stage1
 
diff --git a/tests/run-make-fulldeps/issue-19371/Makefile b/tests/run-make-fulldeps/issue-19371/Makefile
index 994e50801c8..edec68f0862 100644
--- a/tests/run-make-fulldeps/issue-19371/Makefile
+++ b/tests/run-make-fulldeps/issue-19371/Makefile
@@ -1,4 +1,4 @@
-include ../tools.mk
+include ../../run-make/tools.mk
 
 # This test ensures that rustc compile_input can be called twice in one task
 # without causing a panic.
diff --git a/tests/run-make-fulldeps/issue-25581/Makefile b/tests/run-make-fulldeps/issue-25581/Makefile
deleted file mode 100644
index 4f5d026f213..00000000000
--- a/tests/run-make-fulldeps/issue-25581/Makefile
+++ /dev/null
@@ -1,5 +0,0 @@
-include ../tools.mk
-
-all: $(call NATIVE_STATICLIB,test)
-	$(RUSTC) test.rs
-	$(call RUN,test) || exit 1
diff --git a/tests/run-make-fulldeps/obtain-borrowck/Makefile b/tests/run-make-fulldeps/obtain-borrowck/Makefile
index 212d0f67d00..233f5c9eaf4 100644
--- a/tests/run-make-fulldeps/obtain-borrowck/Makefile
+++ b/tests/run-make-fulldeps/obtain-borrowck/Makefile
@@ -1,4 +1,4 @@
-include ../tools.mk
+include ../../run-make/tools.mk
 
 # This example shows how to implement a rustc driver that retrieves MIR bodies
 # together with the borrow checker information.
diff --git a/tests/run-make-fulldeps/pretty-expanded/Makefile b/tests/run-make-fulldeps/pretty-expanded/Makefile
index 5a0097a8351..48199179ece 100644
--- a/tests/run-make-fulldeps/pretty-expanded/Makefile
+++ b/tests/run-make-fulldeps/pretty-expanded/Makefile
@@ -1,4 +1,4 @@
-include ../tools.mk
+include ../../run-make/tools.mk
 
 all:
 	$(RUSTC) -o $(TMPDIR)/input.expanded.rs -Zunpretty=expanded input.rs
diff --git a/tests/run-make-fulldeps/a-b-a-linker-guard/Makefile b/tests/run-make/a-b-a-linker-guard/Makefile
index adc9e3d0916..43282eae09c 100644
--- a/tests/run-make-fulldeps/a-b-a-linker-guard/Makefile
+++ b/tests/run-make/a-b-a-linker-guard/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # Test that if we build `b` against a version of `a` that has one set
diff --git a/tests/run-make-fulldeps/a-b-a-linker-guard/a.rs b/tests/run-make/a-b-a-linker-guard/a.rs
index aa07b1e7160..aa07b1e7160 100644
--- a/tests/run-make-fulldeps/a-b-a-linker-guard/a.rs
+++ b/tests/run-make/a-b-a-linker-guard/a.rs
diff --git a/tests/run-make-fulldeps/a-b-a-linker-guard/b.rs b/tests/run-make/a-b-a-linker-guard/b.rs
index f30df120a3b..f30df120a3b 100644
--- a/tests/run-make-fulldeps/a-b-a-linker-guard/b.rs
+++ b/tests/run-make/a-b-a-linker-guard/b.rs
diff --git a/tests/run-make-fulldeps/alloc-no-oom-handling/Makefile b/tests/run-make/alloc-no-oom-handling/Makefile
index 87f74c69c79..87f74c69c79 100644
--- a/tests/run-make-fulldeps/alloc-no-oom-handling/Makefile
+++ b/tests/run-make/alloc-no-oom-handling/Makefile
diff --git a/tests/run-make-fulldeps/alloc-no-rc/Makefile b/tests/run-make/alloc-no-rc/Makefile
index 9824b17e6c2..9824b17e6c2 100644
--- a/tests/run-make-fulldeps/alloc-no-rc/Makefile
+++ b/tests/run-make/alloc-no-rc/Makefile
diff --git a/tests/run-make-fulldeps/alloc-no-sync/Makefile b/tests/run-make/alloc-no-sync/Makefile
index 04ec4c7d8bc..04ec4c7d8bc 100644
--- a/tests/run-make-fulldeps/alloc-no-sync/Makefile
+++ b/tests/run-make/alloc-no-sync/Makefile
diff --git a/tests/run-make-fulldeps/allow-non-lint-warnings-cmdline/Makefile b/tests/run-make/allow-non-lint-warnings-cmdline/Makefile
index 60d9c7c3745..78b9a7b9898 100644
--- a/tests/run-make-fulldeps/allow-non-lint-warnings-cmdline/Makefile
+++ b/tests/run-make/allow-non-lint-warnings-cmdline/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # Test that -A warnings makes the 'empty trait list for derive' warning go away
diff --git a/tests/run-make-fulldeps/allow-non-lint-warnings-cmdline/foo.rs b/tests/run-make/allow-non-lint-warnings-cmdline/foo.rs
index 46e72da2de9..46e72da2de9 100644
--- a/tests/run-make-fulldeps/allow-non-lint-warnings-cmdline/foo.rs
+++ b/tests/run-make/allow-non-lint-warnings-cmdline/foo.rs
diff --git a/tests/run-make-fulldeps/allow-warnings-cmdline-stability/Makefile b/tests/run-make/allow-warnings-cmdline-stability/Makefile
index 1ce8d0ec284..368a39af6bf 100644
--- a/tests/run-make-fulldeps/allow-warnings-cmdline-stability/Makefile
+++ b/tests/run-make/allow-warnings-cmdline-stability/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # Test that -A warnings makes the 'empty trait list for derive' warning go away
diff --git a/tests/run-make-fulldeps/allow-warnings-cmdline-stability/bar.rs b/tests/run-make/allow-warnings-cmdline-stability/bar.rs
index 3dcfb9dadd8..3dcfb9dadd8 100644
--- a/tests/run-make-fulldeps/allow-warnings-cmdline-stability/bar.rs
+++ b/tests/run-make/allow-warnings-cmdline-stability/bar.rs
diff --git a/tests/run-make-fulldeps/allow-warnings-cmdline-stability/foo.rs b/tests/run-make/allow-warnings-cmdline-stability/foo.rs
index 869b5435416..869b5435416 100644
--- a/tests/run-make-fulldeps/allow-warnings-cmdline-stability/foo.rs
+++ b/tests/run-make/allow-warnings-cmdline-stability/foo.rs
diff --git a/tests/run-make-fulldeps/archive-duplicate-names/Makefile b/tests/run-make/archive-duplicate-names/Makefile
index bbdcd2a34fe..5433a42d252 100644
--- a/tests/run-make-fulldeps/archive-duplicate-names/Makefile
+++ b/tests/run-make/archive-duplicate-names/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/archive-duplicate-names/bar.c b/tests/run-make/archive-duplicate-names/bar.c
index e4259998678..e4259998678 100644
--- a/tests/run-make-fulldeps/archive-duplicate-names/bar.c
+++ b/tests/run-make/archive-duplicate-names/bar.c
diff --git a/tests/run-make-fulldeps/archive-duplicate-names/bar.rs b/tests/run-make/archive-duplicate-names/bar.rs
index 994a98c2cd8..994a98c2cd8 100644
--- a/tests/run-make-fulldeps/archive-duplicate-names/bar.rs
+++ b/tests/run-make/archive-duplicate-names/bar.rs
diff --git a/tests/run-make-fulldeps/archive-duplicate-names/foo.c b/tests/run-make/archive-duplicate-names/foo.c
index 85e6cd8c390..85e6cd8c390 100644
--- a/tests/run-make-fulldeps/archive-duplicate-names/foo.c
+++ b/tests/run-make/archive-duplicate-names/foo.c
diff --git a/tests/run-make-fulldeps/archive-duplicate-names/foo.rs b/tests/run-make/archive-duplicate-names/foo.rs
index 0bf13c406ab..0bf13c406ab 100644
--- a/tests/run-make-fulldeps/archive-duplicate-names/foo.rs
+++ b/tests/run-make/archive-duplicate-names/foo.rs
diff --git a/tests/run-make-fulldeps/arguments-non-c-like-enum/Makefile b/tests/run-make/arguments-non-c-like-enum/Makefile
index 513311c8289..0c8d8bf3acc 100644
--- a/tests/run-make-fulldeps/arguments-non-c-like-enum/Makefile
+++ b/tests/run-make/arguments-non-c-like-enum/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/arguments-non-c-like-enum/nonclike.rs b/tests/run-make/arguments-non-c-like-enum/nonclike.rs
index 57c2c6127ed..57c2c6127ed 100644
--- a/tests/run-make-fulldeps/arguments-non-c-like-enum/nonclike.rs
+++ b/tests/run-make/arguments-non-c-like-enum/nonclike.rs
diff --git a/tests/run-make-fulldeps/arguments-non-c-like-enum/test.c b/tests/run-make/arguments-non-c-like-enum/test.c
index 0a1621e49f2..0a1621e49f2 100644
--- a/tests/run-make-fulldeps/arguments-non-c-like-enum/test.c
+++ b/tests/run-make/arguments-non-c-like-enum/test.c
diff --git a/tests/run-make-fulldeps/atomic-lock-free/Makefile b/tests/run-make/atomic-lock-free/Makefile
index 37e59624a25..37e59624a25 100644
--- a/tests/run-make-fulldeps/atomic-lock-free/Makefile
+++ b/tests/run-make/atomic-lock-free/Makefile
diff --git a/tests/run-make-fulldeps/atomic-lock-free/atomic_lock_free.rs b/tests/run-make/atomic-lock-free/atomic_lock_free.rs
index 47d90b1856b..47d90b1856b 100644
--- a/tests/run-make-fulldeps/atomic-lock-free/atomic_lock_free.rs
+++ b/tests/run-make/atomic-lock-free/atomic_lock_free.rs
diff --git a/tests/run-make-fulldeps/bare-outfile/Makefile b/tests/run-make/bare-outfile/Makefile
index 858466e942b..23b619ea0ba 100644
--- a/tests/run-make-fulldeps/bare-outfile/Makefile
+++ b/tests/run-make/bare-outfile/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/bare-outfile/foo.rs b/tests/run-make/bare-outfile/foo.rs
index f79c691f085..f79c691f085 100644
--- a/tests/run-make-fulldeps/bare-outfile/foo.rs
+++ b/tests/run-make/bare-outfile/foo.rs
diff --git a/tests/run-make-fulldeps/c-dynamic-dylib/Makefile b/tests/run-make/c-dynamic-dylib/Makefile
index ac68778922d..b5bfbc76539 100644
--- a/tests/run-make-fulldeps/c-dynamic-dylib/Makefile
+++ b/tests/run-make/c-dynamic-dylib/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # ignore-macos
diff --git a/tests/run-make-fulldeps/c-dynamic-dylib/bar.rs b/tests/run-make/c-dynamic-dylib/bar.rs
index b8c798ffdb4..b8c798ffdb4 100644
--- a/tests/run-make-fulldeps/c-dynamic-dylib/bar.rs
+++ b/tests/run-make/c-dynamic-dylib/bar.rs
diff --git a/tests/run-make-fulldeps/c-dynamic-dylib/cfoo.c b/tests/run-make/c-dynamic-dylib/cfoo.c
index fea490cf9b4..fea490cf9b4 100644
--- a/tests/run-make-fulldeps/c-dynamic-dylib/cfoo.c
+++ b/tests/run-make/c-dynamic-dylib/cfoo.c
diff --git a/tests/run-make-fulldeps/c-dynamic-dylib/foo.rs b/tests/run-make/c-dynamic-dylib/foo.rs
index 9f7a9e2213c..9f7a9e2213c 100644
--- a/tests/run-make-fulldeps/c-dynamic-dylib/foo.rs
+++ b/tests/run-make/c-dynamic-dylib/foo.rs
diff --git a/tests/run-make-fulldeps/c-dynamic-rlib/Makefile b/tests/run-make/c-dynamic-rlib/Makefile
index c65d648b929..0475bd8acae 100644
--- a/tests/run-make-fulldeps/c-dynamic-rlib/Makefile
+++ b/tests/run-make/c-dynamic-rlib/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # ignore-macos
diff --git a/tests/run-make-fulldeps/c-dynamic-rlib/bar.rs b/tests/run-make/c-dynamic-rlib/bar.rs
index b8c798ffdb4..b8c798ffdb4 100644
--- a/tests/run-make-fulldeps/c-dynamic-rlib/bar.rs
+++ b/tests/run-make/c-dynamic-rlib/bar.rs
diff --git a/tests/run-make-fulldeps/c-dynamic-rlib/cfoo.c b/tests/run-make/c-dynamic-rlib/cfoo.c
index fea490cf9b4..fea490cf9b4 100644
--- a/tests/run-make-fulldeps/c-dynamic-rlib/cfoo.c
+++ b/tests/run-make/c-dynamic-rlib/cfoo.c
diff --git a/tests/run-make-fulldeps/c-dynamic-rlib/foo.rs b/tests/run-make/c-dynamic-rlib/foo.rs
index 3dd376f1ff5..3dd376f1ff5 100644
--- a/tests/run-make-fulldeps/c-dynamic-rlib/foo.rs
+++ b/tests/run-make/c-dynamic-rlib/foo.rs
diff --git a/tests/run-make-fulldeps/c-link-to-rust-dylib/Makefile b/tests/run-make/c-link-to-rust-dylib/Makefile
index 2a371b54541..2763cb6ed1d 100644
--- a/tests/run-make-fulldeps/c-link-to-rust-dylib/Makefile
+++ b/tests/run-make/c-link-to-rust-dylib/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: $(TMPDIR)/$(call BIN,bar)
diff --git a/tests/run-make-fulldeps/c-link-to-rust-dylib/bar.c b/tests/run-make/c-link-to-rust-dylib/bar.c
index bb4036b06e1..bb4036b06e1 100644
--- a/tests/run-make-fulldeps/c-link-to-rust-dylib/bar.c
+++ b/tests/run-make/c-link-to-rust-dylib/bar.c
diff --git a/tests/run-make-fulldeps/c-link-to-rust-dylib/foo.rs b/tests/run-make/c-link-to-rust-dylib/foo.rs
index f197fa51334..f197fa51334 100644
--- a/tests/run-make-fulldeps/c-link-to-rust-dylib/foo.rs
+++ b/tests/run-make/c-link-to-rust-dylib/foo.rs
diff --git a/tests/run-make-fulldeps/c-link-to-rust-staticlib/Makefile b/tests/run-make/c-link-to-rust-staticlib/Makefile
index d38bcef309a..e14775f5c18 100644
--- a/tests/run-make-fulldeps/c-link-to-rust-staticlib/Makefile
+++ b/tests/run-make/c-link-to-rust-staticlib/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # ignore-freebsd
diff --git a/tests/run-make-fulldeps/c-link-to-rust-staticlib/bar.c b/tests/run-make/c-link-to-rust-staticlib/bar.c
index bb4036b06e1..bb4036b06e1 100644
--- a/tests/run-make-fulldeps/c-link-to-rust-staticlib/bar.c
+++ b/tests/run-make/c-link-to-rust-staticlib/bar.c
diff --git a/tests/run-make-fulldeps/c-link-to-rust-staticlib/foo.rs b/tests/run-make/c-link-to-rust-staticlib/foo.rs
index 2e59432cdb1..2e59432cdb1 100644
--- a/tests/run-make-fulldeps/c-link-to-rust-staticlib/foo.rs
+++ b/tests/run-make/c-link-to-rust-staticlib/foo.rs
diff --git a/tests/run-make-fulldeps/c-link-to-rust-va-list-fn/Makefile b/tests/run-make/c-link-to-rust-va-list-fn/Makefile
index 9ce2a34e677..596c0fce3ce 100644
--- a/tests/run-make-fulldeps/c-link-to-rust-va-list-fn/Makefile
+++ b/tests/run-make/c-link-to-rust-va-list-fn/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/c-link-to-rust-va-list-fn/checkrust.rs b/tests/run-make/c-link-to-rust-va-list-fn/checkrust.rs
index 5830ef033d3..5830ef033d3 100644
--- a/tests/run-make-fulldeps/c-link-to-rust-va-list-fn/checkrust.rs
+++ b/tests/run-make/c-link-to-rust-va-list-fn/checkrust.rs
diff --git a/tests/run-make-fulldeps/c-link-to-rust-va-list-fn/test.c b/tests/run-make/c-link-to-rust-va-list-fn/test.c
index 5bdb51680a6..5bdb51680a6 100644
--- a/tests/run-make-fulldeps/c-link-to-rust-va-list-fn/test.c
+++ b/tests/run-make/c-link-to-rust-va-list-fn/test.c
diff --git a/tests/run-make-fulldeps/c-static-dylib/Makefile b/tests/run-make/c-static-dylib/Makefile
index 5b78005e3ee..4e23edb6c57 100644
--- a/tests/run-make-fulldeps/c-static-dylib/Makefile
+++ b/tests/run-make/c-static-dylib/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: $(call NATIVE_STATICLIB,cfoo)
diff --git a/tests/run-make-fulldeps/c-static-dylib/bar.rs b/tests/run-make/c-static-dylib/bar.rs
index b8c798ffdb4..b8c798ffdb4 100644
--- a/tests/run-make-fulldeps/c-static-dylib/bar.rs
+++ b/tests/run-make/c-static-dylib/bar.rs
diff --git a/tests/run-make-fulldeps/c-static-dylib/cfoo.c b/tests/run-make/c-static-dylib/cfoo.c
index 9fe07f82f9e..9fe07f82f9e 100644
--- a/tests/run-make-fulldeps/c-static-dylib/cfoo.c
+++ b/tests/run-make/c-static-dylib/cfoo.c
diff --git a/tests/run-make-fulldeps/c-static-dylib/foo.rs b/tests/run-make/c-static-dylib/foo.rs
index 1e8af4d4404..1e8af4d4404 100644
--- a/tests/run-make-fulldeps/c-static-dylib/foo.rs
+++ b/tests/run-make/c-static-dylib/foo.rs
diff --git a/tests/run-make-fulldeps/c-static-rlib/Makefile b/tests/run-make/c-static-rlib/Makefile
index 11a3cf1940c..4e351127cb6 100644
--- a/tests/run-make-fulldeps/c-static-rlib/Makefile
+++ b/tests/run-make/c-static-rlib/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: $(call NATIVE_STATICLIB,cfoo)
diff --git a/tests/run-make-fulldeps/c-static-rlib/bar.rs b/tests/run-make/c-static-rlib/bar.rs
index b8c798ffdb4..b8c798ffdb4 100644
--- a/tests/run-make-fulldeps/c-static-rlib/bar.rs
+++ b/tests/run-make/c-static-rlib/bar.rs
diff --git a/tests/run-make-fulldeps/c-static-rlib/cfoo.c b/tests/run-make/c-static-rlib/cfoo.c
index 9fe07f82f9e..9fe07f82f9e 100644
--- a/tests/run-make-fulldeps/c-static-rlib/cfoo.c
+++ b/tests/run-make/c-static-rlib/cfoo.c
diff --git a/tests/run-make-fulldeps/c-static-rlib/foo.rs b/tests/run-make/c-static-rlib/foo.rs
index 9c6d2080ef4..9c6d2080ef4 100644
--- a/tests/run-make-fulldeps/c-static-rlib/foo.rs
+++ b/tests/run-make/c-static-rlib/foo.rs
diff --git a/tests/run-make-fulldeps/c-unwind-abi-catch-lib-panic/Makefile b/tests/run-make/c-unwind-abi-catch-lib-panic/Makefile
index 134f000d453..9c41a5a717e 100644
--- a/tests/run-make-fulldeps/c-unwind-abi-catch-lib-panic/Makefile
+++ b/tests/run-make/c-unwind-abi-catch-lib-panic/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: archive
diff --git a/tests/run-make-fulldeps/c-unwind-abi-catch-lib-panic/add.c b/tests/run-make/c-unwind-abi-catch-lib-panic/add.c
index 444359451f6..444359451f6 100644
--- a/tests/run-make-fulldeps/c-unwind-abi-catch-lib-panic/add.c
+++ b/tests/run-make/c-unwind-abi-catch-lib-panic/add.c
diff --git a/tests/run-make-fulldeps/c-unwind-abi-catch-lib-panic/main.rs b/tests/run-make/c-unwind-abi-catch-lib-panic/main.rs
index 78a71219c78..78a71219c78 100644
--- a/tests/run-make-fulldeps/c-unwind-abi-catch-lib-panic/main.rs
+++ b/tests/run-make/c-unwind-abi-catch-lib-panic/main.rs
diff --git a/tests/run-make-fulldeps/c-unwind-abi-catch-lib-panic/panic.rs b/tests/run-make/c-unwind-abi-catch-lib-panic/panic.rs
index a99a04d5c6f..a99a04d5c6f 100644
--- a/tests/run-make-fulldeps/c-unwind-abi-catch-lib-panic/panic.rs
+++ b/tests/run-make/c-unwind-abi-catch-lib-panic/panic.rs
diff --git a/tests/run-make-fulldeps/c-unwind-abi-catch-panic/Makefile b/tests/run-make/c-unwind-abi-catch-panic/Makefile
index e93ec99da2a..4398ac2ee24 100644
--- a/tests/run-make-fulldeps/c-unwind-abi-catch-panic/Makefile
+++ b/tests/run-make/c-unwind-abi-catch-panic/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: $(call NATIVE_STATICLIB,add)
diff --git a/tests/run-make-fulldeps/c-unwind-abi-catch-panic/add.c b/tests/run-make/c-unwind-abi-catch-panic/add.c
index 444359451f6..444359451f6 100644
--- a/tests/run-make-fulldeps/c-unwind-abi-catch-panic/add.c
+++ b/tests/run-make/c-unwind-abi-catch-panic/add.c
diff --git a/tests/run-make-fulldeps/c-unwind-abi-catch-panic/main.rs b/tests/run-make/c-unwind-abi-catch-panic/main.rs
index 15d38d72160..15d38d72160 100644
--- a/tests/run-make-fulldeps/c-unwind-abi-catch-panic/main.rs
+++ b/tests/run-make/c-unwind-abi-catch-panic/main.rs
diff --git a/tests/run-make-fulldeps/cat-and-grep-sanity-check/Makefile b/tests/run-make/cat-and-grep-sanity-check/Makefile
index 82351e22009..82351e22009 100644
--- a/tests/run-make-fulldeps/cat-and-grep-sanity-check/Makefile
+++ b/tests/run-make/cat-and-grep-sanity-check/Makefile
diff --git a/tests/run-make-fulldeps/cdylib-dylib-linkage/Makefile b/tests/run-make/cdylib-dylib-linkage/Makefile
index 5c9b2d1bb2f..51fbfef2d85 100644
--- a/tests/run-make-fulldeps/cdylib-dylib-linkage/Makefile
+++ b/tests/run-make/cdylib-dylib-linkage/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 TARGET_SYSROOT := $(shell $(RUSTC) --print sysroot)/lib/rustlib/$(TARGET)/lib
diff --git a/tests/run-make-fulldeps/cdylib-dylib-linkage/bar.rs b/tests/run-make/cdylib-dylib-linkage/bar.rs
index b3a7539abae..b3a7539abae 100644
--- a/tests/run-make-fulldeps/cdylib-dylib-linkage/bar.rs
+++ b/tests/run-make/cdylib-dylib-linkage/bar.rs
diff --git a/tests/run-make-fulldeps/cdylib-dylib-linkage/foo.c b/tests/run-make/cdylib-dylib-linkage/foo.c
index 154f9682ef8..154f9682ef8 100644
--- a/tests/run-make-fulldeps/cdylib-dylib-linkage/foo.c
+++ b/tests/run-make/cdylib-dylib-linkage/foo.c
diff --git a/tests/run-make-fulldeps/cdylib-dylib-linkage/foo.rs b/tests/run-make/cdylib-dylib-linkage/foo.rs
index c4069495aaf..c4069495aaf 100644
--- a/tests/run-make-fulldeps/cdylib-dylib-linkage/foo.rs
+++ b/tests/run-make/cdylib-dylib-linkage/foo.rs
diff --git a/tests/run-make-fulldeps/cdylib-fewer-symbols/Makefile b/tests/run-make/cdylib-fewer-symbols/Makefile
index 324791af8de..4e08f979c36 100644
--- a/tests/run-make-fulldeps/cdylib-fewer-symbols/Makefile
+++ b/tests/run-make/cdylib-fewer-symbols/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 # Test that allocator-related symbols don't show up as exported from a cdylib as
 # they're internal to Rust and not part of the public ABI.
 
diff --git a/tests/run-make-fulldeps/cdylib-fewer-symbols/foo.rs b/tests/run-make/cdylib-fewer-symbols/foo.rs
index af37bc8e953..af37bc8e953 100644
--- a/tests/run-make-fulldeps/cdylib-fewer-symbols/foo.rs
+++ b/tests/run-make/cdylib-fewer-symbols/foo.rs
diff --git a/tests/run-make-fulldeps/cdylib/Makefile b/tests/run-make/cdylib/Makefile
index 47ec762b3e9..3c8b5269554 100644
--- a/tests/run-make-fulldeps/cdylib/Makefile
+++ b/tests/run-make/cdylib/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: $(call RUN_BINFILE,foo)
diff --git a/tests/run-make-fulldeps/cdylib/bar.rs b/tests/run-make/cdylib/bar.rs
index fe665abc7c1..fe665abc7c1 100644
--- a/tests/run-make-fulldeps/cdylib/bar.rs
+++ b/tests/run-make/cdylib/bar.rs
diff --git a/tests/run-make-fulldeps/cdylib/foo.c b/tests/run-make/cdylib/foo.c
index 154f9682ef8..154f9682ef8 100644
--- a/tests/run-make-fulldeps/cdylib/foo.c
+++ b/tests/run-make/cdylib/foo.c
diff --git a/tests/run-make-fulldeps/cdylib/foo.rs b/tests/run-make/cdylib/foo.rs
index c4069495aaf..c4069495aaf 100644
--- a/tests/run-make-fulldeps/cdylib/foo.rs
+++ b/tests/run-make/cdylib/foo.rs
diff --git a/tests/run-make-fulldeps/codegen-options-parsing/Makefile b/tests/run-make/codegen-options-parsing/Makefile
index b063593c9d9..56bb900b7d8 100644
--- a/tests/run-make-fulldeps/codegen-options-parsing/Makefile
+++ b/tests/run-make/codegen-options-parsing/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/codegen-options-parsing/dummy.rs b/tests/run-make/codegen-options-parsing/dummy.rs
index f328e4d9d04..f328e4d9d04 100644
--- a/tests/run-make-fulldeps/codegen-options-parsing/dummy.rs
+++ b/tests/run-make/codegen-options-parsing/dummy.rs
diff --git a/tests/run-make-fulldeps/compile-stdin/Makefile b/tests/run-make/compile-stdin/Makefile
index be15548690f..2a495281c24 100644
--- a/tests/run-make-fulldeps/compile-stdin/Makefile
+++ b/tests/run-make/compile-stdin/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/compiler-lookup-paths-2/Makefile b/tests/run-make/compiler-lookup-paths-2/Makefile
index d4ff7d8daab..d4ff7d8daab 100644
--- a/tests/run-make-fulldeps/compiler-lookup-paths-2/Makefile
+++ b/tests/run-make/compiler-lookup-paths-2/Makefile
diff --git a/tests/run-make-fulldeps/compiler-lookup-paths-2/a.rs b/tests/run-make/compiler-lookup-paths-2/a.rs
index 83be6e807e0..83be6e807e0 100644
--- a/tests/run-make-fulldeps/compiler-lookup-paths-2/a.rs
+++ b/tests/run-make/compiler-lookup-paths-2/a.rs
diff --git a/tests/run-make-fulldeps/compiler-lookup-paths-2/b.rs b/tests/run-make/compiler-lookup-paths-2/b.rs
index 1be6cbc919d..1be6cbc919d 100644
--- a/tests/run-make-fulldeps/compiler-lookup-paths-2/b.rs
+++ b/tests/run-make/compiler-lookup-paths-2/b.rs
diff --git a/tests/run-make-fulldeps/compiler-lookup-paths-2/c.rs b/tests/run-make/compiler-lookup-paths-2/c.rs
index e37bc2e1dce..e37bc2e1dce 100644
--- a/tests/run-make-fulldeps/compiler-lookup-paths-2/c.rs
+++ b/tests/run-make/compiler-lookup-paths-2/c.rs
diff --git a/tests/run-make-fulldeps/compiler-lookup-paths/Makefile b/tests/run-make/compiler-lookup-paths/Makefile
index c16bf7af6c4..310d6772c34 100644
--- a/tests/run-make-fulldeps/compiler-lookup-paths/Makefile
+++ b/tests/run-make/compiler-lookup-paths/Makefile
@@ -1,5 +1,8 @@
 include ../tools.mk
 
+# ignore-wasm32 (need a C compiler)
+# ignore-wasm64 (need a C compiler)
+
 all: $(TMPDIR)/libnative.a
 	mkdir -p $(TMPDIR)/crate
 	mkdir -p $(TMPDIR)/native
diff --git a/tests/run-make-fulldeps/compiler-lookup-paths/a.rs b/tests/run-make/compiler-lookup-paths/a.rs
index 83be6e807e0..83be6e807e0 100644
--- a/tests/run-make-fulldeps/compiler-lookup-paths/a.rs
+++ b/tests/run-make/compiler-lookup-paths/a.rs
diff --git a/tests/run-make-fulldeps/compiler-lookup-paths/b.rs b/tests/run-make/compiler-lookup-paths/b.rs
index 1be6cbc919d..1be6cbc919d 100644
--- a/tests/run-make-fulldeps/compiler-lookup-paths/b.rs
+++ b/tests/run-make/compiler-lookup-paths/b.rs
diff --git a/tests/run-make-fulldeps/compiler-lookup-paths/c.rs b/tests/run-make/compiler-lookup-paths/c.rs
index 4c7ce01b6a0..4c7ce01b6a0 100644
--- a/tests/run-make-fulldeps/compiler-lookup-paths/c.rs
+++ b/tests/run-make/compiler-lookup-paths/c.rs
diff --git a/tests/run-make-fulldeps/compiler-lookup-paths/d.rs b/tests/run-make/compiler-lookup-paths/d.rs
index 6cd9916b6f6..6cd9916b6f6 100644
--- a/tests/run-make-fulldeps/compiler-lookup-paths/d.rs
+++ b/tests/run-make/compiler-lookup-paths/d.rs
diff --git a/tests/run-make-fulldeps/compiler-lookup-paths/e.rs b/tests/run-make/compiler-lookup-paths/e.rs
index 18eb60aca97..18eb60aca97 100644
--- a/tests/run-make-fulldeps/compiler-lookup-paths/e.rs
+++ b/tests/run-make/compiler-lookup-paths/e.rs
diff --git a/tests/run-make-fulldeps/compiler-lookup-paths/e2.rs b/tests/run-make/compiler-lookup-paths/e2.rs
index cbf08b98e7e..cbf08b98e7e 100644
--- a/tests/run-make-fulldeps/compiler-lookup-paths/e2.rs
+++ b/tests/run-make/compiler-lookup-paths/e2.rs
diff --git a/tests/run-make-fulldeps/compiler-lookup-paths/f.rs b/tests/run-make/compiler-lookup-paths/f.rs
index 483deaaea49..483deaaea49 100644
--- a/tests/run-make-fulldeps/compiler-lookup-paths/f.rs
+++ b/tests/run-make/compiler-lookup-paths/f.rs
diff --git a/tests/run-make-fulldeps/compiler-lookup-paths/native.c b/tests/run-make/compiler-lookup-paths/native.c
index d11c69f812a..d11c69f812a 100644
--- a/tests/run-make-fulldeps/compiler-lookup-paths/native.c
+++ b/tests/run-make/compiler-lookup-paths/native.c
diff --git a/tests/run-make-fulldeps/compiler-rt-works-on-mingw/Makefile b/tests/run-make/compiler-rt-works-on-mingw/Makefile
index 74917570a01..74917570a01 100644
--- a/tests/run-make-fulldeps/compiler-rt-works-on-mingw/Makefile
+++ b/tests/run-make/compiler-rt-works-on-mingw/Makefile
diff --git a/tests/run-make-fulldeps/compiler-rt-works-on-mingw/foo.cpp b/tests/run-make/compiler-rt-works-on-mingw/foo.cpp
index 4c2fb9cdb87..4c2fb9cdb87 100644
--- a/tests/run-make-fulldeps/compiler-rt-works-on-mingw/foo.cpp
+++ b/tests/run-make/compiler-rt-works-on-mingw/foo.cpp
diff --git a/tests/run-make-fulldeps/compiler-rt-works-on-mingw/foo.rs b/tests/run-make/compiler-rt-works-on-mingw/foo.rs
index 7fdb8158871..7fdb8158871 100644
--- a/tests/run-make-fulldeps/compiler-rt-works-on-mingw/foo.rs
+++ b/tests/run-make/compiler-rt-works-on-mingw/foo.rs
diff --git a/tests/run-make/const_fn_mir/Makefile b/tests/run-make/const_fn_mir/Makefile
index ad5695093a1..b2c268f0439 100644
--- a/tests/run-make/const_fn_mir/Makefile
+++ b/tests/run-make/const_fn_mir/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 all:
 	$(RUSTC) main.rs --emit=mir -o "$(TMPDIR)"/dump.mir
diff --git a/tests/run-make-fulldeps/core-no-fp-fmt-parse/Makefile b/tests/run-make/core-no-fp-fmt-parse/Makefile
index 837664d92b9..837664d92b9 100644
--- a/tests/run-make-fulldeps/core-no-fp-fmt-parse/Makefile
+++ b/tests/run-make/core-no-fp-fmt-parse/Makefile
diff --git a/tests/run-make/coverage/coverage_tools.mk b/tests/run-make/coverage/coverage_tools.mk
index 0b6bbc33167..028c020a461 100644
--- a/tests/run-make/coverage/coverage_tools.mk
+++ b/tests/run-make/coverage/coverage_tools.mk
@@ -3,4 +3,4 @@
 #
 # include ../coverage/coverage_tools.mk
 
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
diff --git a/tests/run-make-fulldeps/crate-data-smoke/Makefile b/tests/run-make/crate-data-smoke/Makefile
index a453f65ff3e..a453f65ff3e 100644
--- a/tests/run-make-fulldeps/crate-data-smoke/Makefile
+++ b/tests/run-make/crate-data-smoke/Makefile
diff --git a/tests/run-make-fulldeps/crate-data-smoke/crate.rs b/tests/run-make/crate-data-smoke/crate.rs
index a48a6f51c42..a48a6f51c42 100644
--- a/tests/run-make-fulldeps/crate-data-smoke/crate.rs
+++ b/tests/run-make/crate-data-smoke/crate.rs
diff --git a/tests/run-make-fulldeps/crate-data-smoke/lib.rs b/tests/run-make/crate-data-smoke/lib.rs
index 8002f11ec87..8002f11ec87 100644
--- a/tests/run-make-fulldeps/crate-data-smoke/lib.rs
+++ b/tests/run-make/crate-data-smoke/lib.rs
diff --git a/tests/run-make-fulldeps/crate-data-smoke/rlib.rs b/tests/run-make/crate-data-smoke/rlib.rs
index 47fcce4a7f6..47fcce4a7f6 100644
--- a/tests/run-make-fulldeps/crate-data-smoke/rlib.rs
+++ b/tests/run-make/crate-data-smoke/rlib.rs
diff --git a/tests/run-make-fulldeps/crate-hash-rustc-version/Makefile b/tests/run-make/crate-hash-rustc-version/Makefile
index 4f25a865ebd..f1d2a360410 100644
--- a/tests/run-make-fulldeps/crate-hash-rustc-version/Makefile
+++ b/tests/run-make/crate-hash-rustc-version/Makefile
@@ -1,4 +1,5 @@
-include ../../run-make-fulldeps/tools.mk
+# ignore-cross-compile
+include ../tools.mk
 
 # Ensure that crates compiled with different rustc versions cannot
 # be dynamically linked.
diff --git a/tests/run-make-fulldeps/crate-hash-rustc-version/a.rs b/tests/run-make/crate-hash-rustc-version/a.rs
index d65b5ce8e88..d65b5ce8e88 100644
--- a/tests/run-make-fulldeps/crate-hash-rustc-version/a.rs
+++ b/tests/run-make/crate-hash-rustc-version/a.rs
diff --git a/tests/run-make-fulldeps/crate-hash-rustc-version/b.rs b/tests/run-make/crate-hash-rustc-version/b.rs
index 316ac26e73f..316ac26e73f 100644
--- a/tests/run-make-fulldeps/crate-hash-rustc-version/b.rs
+++ b/tests/run-make/crate-hash-rustc-version/b.rs
diff --git a/tests/run-make-fulldeps/crate-name-priority/Makefile b/tests/run-make/crate-name-priority/Makefile
index 08a07c325e3..4adaa75a71c 100644
--- a/tests/run-make-fulldeps/crate-name-priority/Makefile
+++ b/tests/run-make/crate-name-priority/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/crate-name-priority/foo.rs b/tests/run-make/crate-name-priority/foo.rs
index f328e4d9d04..f328e4d9d04 100644
--- a/tests/run-make-fulldeps/crate-name-priority/foo.rs
+++ b/tests/run-make/crate-name-priority/foo.rs
diff --git a/tests/run-make-fulldeps/crate-name-priority/foo1.rs b/tests/run-make/crate-name-priority/foo1.rs
index 4ff3bd9516b..4ff3bd9516b 100644
--- a/tests/run-make-fulldeps/crate-name-priority/foo1.rs
+++ b/tests/run-make/crate-name-priority/foo1.rs
diff --git a/tests/run-make-fulldeps/cross-lang-lto-clang/Makefile b/tests/run-make/cross-lang-lto-clang/Makefile
index acaebf439d6..acaebf439d6 100644
--- a/tests/run-make-fulldeps/cross-lang-lto-clang/Makefile
+++ b/tests/run-make/cross-lang-lto-clang/Makefile
diff --git a/tests/run-make-fulldeps/cross-lang-lto-clang/clib.c b/tests/run-make/cross-lang-lto-clang/clib.c
index 90f33f24dc4..90f33f24dc4 100644
--- a/tests/run-make-fulldeps/cross-lang-lto-clang/clib.c
+++ b/tests/run-make/cross-lang-lto-clang/clib.c
diff --git a/tests/run-make-fulldeps/cross-lang-lto-clang/cmain.c b/tests/run-make/cross-lang-lto-clang/cmain.c
index e62a40117ce..e62a40117ce 100644
--- a/tests/run-make-fulldeps/cross-lang-lto-clang/cmain.c
+++ b/tests/run-make/cross-lang-lto-clang/cmain.c
diff --git a/tests/run-make-fulldeps/cross-lang-lto-clang/main.rs b/tests/run-make/cross-lang-lto-clang/main.rs
index 8129dcb85d9..8129dcb85d9 100644
--- a/tests/run-make-fulldeps/cross-lang-lto-clang/main.rs
+++ b/tests/run-make/cross-lang-lto-clang/main.rs
diff --git a/tests/run-make-fulldeps/cross-lang-lto-clang/rustlib.rs b/tests/run-make/cross-lang-lto-clang/rustlib.rs
index 8a74d74a420..8a74d74a420 100644
--- a/tests/run-make-fulldeps/cross-lang-lto-clang/rustlib.rs
+++ b/tests/run-make/cross-lang-lto-clang/rustlib.rs
diff --git a/tests/run-make-fulldeps/cross-lang-lto-pgo-smoketest/Makefile b/tests/run-make/cross-lang-lto-pgo-smoketest/Makefile
index 70085d9bde1..70085d9bde1 100644
--- a/tests/run-make-fulldeps/cross-lang-lto-pgo-smoketest/Makefile
+++ b/tests/run-make/cross-lang-lto-pgo-smoketest/Makefile
diff --git a/tests/run-make-fulldeps/cross-lang-lto-pgo-smoketest/clib.c b/tests/run-make/cross-lang-lto-pgo-smoketest/clib.c
index 90f33f24dc4..90f33f24dc4 100644
--- a/tests/run-make-fulldeps/cross-lang-lto-pgo-smoketest/clib.c
+++ b/tests/run-make/cross-lang-lto-pgo-smoketest/clib.c
diff --git a/tests/run-make-fulldeps/cross-lang-lto-pgo-smoketest/cmain.c b/tests/run-make/cross-lang-lto-pgo-smoketest/cmain.c
index e3f24828be3..e3f24828be3 100644
--- a/tests/run-make-fulldeps/cross-lang-lto-pgo-smoketest/cmain.c
+++ b/tests/run-make/cross-lang-lto-pgo-smoketest/cmain.c
diff --git a/tests/run-make-fulldeps/cross-lang-lto-pgo-smoketest/main.rs b/tests/run-make/cross-lang-lto-pgo-smoketest/main.rs
index 8129dcb85d9..8129dcb85d9 100644
--- a/tests/run-make-fulldeps/cross-lang-lto-pgo-smoketest/main.rs
+++ b/tests/run-make/cross-lang-lto-pgo-smoketest/main.rs
diff --git a/tests/run-make-fulldeps/cross-lang-lto-pgo-smoketest/rustlib.rs b/tests/run-make/cross-lang-lto-pgo-smoketest/rustlib.rs
index 8a74d74a420..8a74d74a420 100644
--- a/tests/run-make-fulldeps/cross-lang-lto-pgo-smoketest/rustlib.rs
+++ b/tests/run-make/cross-lang-lto-pgo-smoketest/rustlib.rs
diff --git a/tests/run-make-fulldeps/cross-lang-lto-upstream-rlibs/Makefile b/tests/run-make/cross-lang-lto-upstream-rlibs/Makefile
index 6f1caa31a80..6f1caa31a80 100644
--- a/tests/run-make-fulldeps/cross-lang-lto-upstream-rlibs/Makefile
+++ b/tests/run-make/cross-lang-lto-upstream-rlibs/Makefile
diff --git a/tests/run-make-fulldeps/cross-lang-lto-upstream-rlibs/staticlib.rs b/tests/run-make/cross-lang-lto-upstream-rlibs/staticlib.rs
index 34951dda3b6..34951dda3b6 100644
--- a/tests/run-make-fulldeps/cross-lang-lto-upstream-rlibs/staticlib.rs
+++ b/tests/run-make/cross-lang-lto-upstream-rlibs/staticlib.rs
diff --git a/tests/run-make-fulldeps/cross-lang-lto-upstream-rlibs/upstream.rs b/tests/run-make/cross-lang-lto-upstream-rlibs/upstream.rs
index bd6820098ee..bd6820098ee 100644
--- a/tests/run-make-fulldeps/cross-lang-lto-upstream-rlibs/upstream.rs
+++ b/tests/run-make/cross-lang-lto-upstream-rlibs/upstream.rs
diff --git a/tests/run-make-fulldeps/cross-lang-lto/Makefile b/tests/run-make/cross-lang-lto/Makefile
index 92058f952a9..92058f952a9 100644
--- a/tests/run-make-fulldeps/cross-lang-lto/Makefile
+++ b/tests/run-make/cross-lang-lto/Makefile
diff --git a/tests/run-make-fulldeps/cross-lang-lto/lib.rs b/tests/run-make/cross-lang-lto/lib.rs
index 94cfef6ada5..94cfef6ada5 100644
--- a/tests/run-make-fulldeps/cross-lang-lto/lib.rs
+++ b/tests/run-make/cross-lang-lto/lib.rs
diff --git a/tests/run-make-fulldeps/cross-lang-lto/main.rs b/tests/run-make/cross-lang-lto/main.rs
index f6320bcb04a..f6320bcb04a 100644
--- a/tests/run-make-fulldeps/cross-lang-lto/main.rs
+++ b/tests/run-make/cross-lang-lto/main.rs
diff --git a/tests/run-make-fulldeps/debug-assertions/Makefile b/tests/run-make/debug-assertions/Makefile
index 73beb4b03ae..e83337c597f 100644
--- a/tests/run-make-fulldeps/debug-assertions/Makefile
+++ b/tests/run-make/debug-assertions/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/debug-assertions/debug.rs b/tests/run-make/debug-assertions/debug.rs
index 76ca60a71c8..76ca60a71c8 100644
--- a/tests/run-make-fulldeps/debug-assertions/debug.rs
+++ b/tests/run-make/debug-assertions/debug.rs
diff --git a/tests/run-make/dep-graph/Makefile b/tests/run-make/dep-graph/Makefile
index ae97b1672ae..d06333f4454 100644
--- a/tests/run-make/dep-graph/Makefile
+++ b/tests/run-make/dep-graph/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # ignore-cross-compile
 
diff --git a/tests/run-make-fulldeps/dep-info-doesnt-run-much/Makefile b/tests/run-make/dep-info-doesnt-run-much/Makefile
index b4dc44ad2be..b4dc44ad2be 100644
--- a/tests/run-make-fulldeps/dep-info-doesnt-run-much/Makefile
+++ b/tests/run-make/dep-info-doesnt-run-much/Makefile
diff --git a/tests/run-make-fulldeps/dep-info-doesnt-run-much/foo.rs b/tests/run-make/dep-info-doesnt-run-much/foo.rs
index 316e681293e..316e681293e 100644
--- a/tests/run-make-fulldeps/dep-info-doesnt-run-much/foo.rs
+++ b/tests/run-make/dep-info-doesnt-run-much/foo.rs
diff --git a/tests/run-make-fulldeps/dep-info-spaces/Makefile b/tests/run-make/dep-info-spaces/Makefile
index 0cfe513e490..0cfe513e490 100644
--- a/tests/run-make-fulldeps/dep-info-spaces/Makefile
+++ b/tests/run-make/dep-info-spaces/Makefile
diff --git a/tests/run-make-fulldeps/dep-info-spaces/Makefile.foo b/tests/run-make/dep-info-spaces/Makefile.foo
index 80a5d4333cd..80a5d4333cd 100644
--- a/tests/run-make-fulldeps/dep-info-spaces/Makefile.foo
+++ b/tests/run-make/dep-info-spaces/Makefile.foo
diff --git a/tests/run-make-fulldeps/dep-info-spaces/bar.rs b/tests/run-make/dep-info-spaces/bar.rs
index c5c0bc606cd..c5c0bc606cd 100644
--- a/tests/run-make-fulldeps/dep-info-spaces/bar.rs
+++ b/tests/run-make/dep-info-spaces/bar.rs
diff --git a/tests/run-make-fulldeps/dep-info-spaces/foo foo.rs b/tests/run-make/dep-info-spaces/foo foo.rs
index b76b4321d62..b76b4321d62 100644
--- a/tests/run-make-fulldeps/dep-info-spaces/foo foo.rs
+++ b/tests/run-make/dep-info-spaces/foo foo.rs
diff --git a/tests/run-make-fulldeps/dep-info-spaces/lib.rs b/tests/run-make/dep-info-spaces/lib.rs
index 6264e7b67ec..6264e7b67ec 100644
--- a/tests/run-make-fulldeps/dep-info-spaces/lib.rs
+++ b/tests/run-make/dep-info-spaces/lib.rs
diff --git a/tests/run-make-fulldeps/dep-info/Makefile b/tests/run-make/dep-info/Makefile
index c76f43a8eed..c76f43a8eed 100644
--- a/tests/run-make-fulldeps/dep-info/Makefile
+++ b/tests/run-make/dep-info/Makefile
diff --git a/tests/run-make-fulldeps/dep-info/Makefile.foo b/tests/run-make/dep-info/Makefile.foo
index e5df31f88c1..e5df31f88c1 100644
--- a/tests/run-make-fulldeps/dep-info/Makefile.foo
+++ b/tests/run-make/dep-info/Makefile.foo
diff --git a/tests/run-make-fulldeps/dep-info/bar.rs b/tests/run-make/dep-info/bar.rs
index c5c0bc606cd..c5c0bc606cd 100644
--- a/tests/run-make-fulldeps/dep-info/bar.rs
+++ b/tests/run-make/dep-info/bar.rs
diff --git a/tests/run-make-fulldeps/dep-info/foo.rs b/tests/run-make/dep-info/foo.rs
index b76b4321d62..b76b4321d62 100644
--- a/tests/run-make-fulldeps/dep-info/foo.rs
+++ b/tests/run-make/dep-info/foo.rs
diff --git a/tests/run-make-fulldeps/dep-info/lib.rs b/tests/run-make/dep-info/lib.rs
index eb8631259d4..eb8631259d4 100644
--- a/tests/run-make-fulldeps/dep-info/lib.rs
+++ b/tests/run-make/dep-info/lib.rs
diff --git a/tests/run-make-fulldeps/dep-info/lib2.rs b/tests/run-make/dep-info/lib2.rs
index f4fda9c93c5..f4fda9c93c5 100644
--- a/tests/run-make-fulldeps/dep-info/lib2.rs
+++ b/tests/run-make/dep-info/lib2.rs
diff --git a/tests/run-make-fulldeps/doctests-keep-binaries/Makefile b/tests/run-make/doctests-keep-binaries/Makefile
index 273c8980b02..6254e93d333 100644
--- a/tests/run-make-fulldeps/doctests-keep-binaries/Makefile
+++ b/tests/run-make/doctests-keep-binaries/Makefile
@@ -1,4 +1,5 @@
-include ../../run-make-fulldeps/tools.mk
+# ignore-cross-compile
+include ../tools.mk
 
 # Check that valid binaries are persisted by running them, regardless of whether the --run or --no-run option is used.
 
diff --git a/tests/run-make-fulldeps/doctests-keep-binaries/t.rs b/tests/run-make/doctests-keep-binaries/t.rs
index c38cf0a0b25..c38cf0a0b25 100644
--- a/tests/run-make-fulldeps/doctests-keep-binaries/t.rs
+++ b/tests/run-make/doctests-keep-binaries/t.rs
diff --git a/tests/run-make/dump-mono-stats/Makefile b/tests/run-make/dump-mono-stats/Makefile
index fe1112fb0a4..196f84be6ec 100644
--- a/tests/run-make/dump-mono-stats/Makefile
+++ b/tests/run-make/dump-mono-stats/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 all:
 	$(RUSTC) --crate-type lib foo.rs -Z dump-mono-stats=$(TMPDIR) -Zdump-mono-stats-format=json
diff --git a/tests/run-make-fulldeps/duplicate-output-flavors/Makefile b/tests/run-make/duplicate-output-flavors/Makefile
index e33279966c9..e33279966c9 100644
--- a/tests/run-make-fulldeps/duplicate-output-flavors/Makefile
+++ b/tests/run-make/duplicate-output-flavors/Makefile
diff --git a/tests/run-make-fulldeps/duplicate-output-flavors/foo.rs b/tests/run-make/duplicate-output-flavors/foo.rs
index c1bfaa6cab5..c1bfaa6cab5 100644
--- a/tests/run-make-fulldeps/duplicate-output-flavors/foo.rs
+++ b/tests/run-make/duplicate-output-flavors/foo.rs
diff --git a/tests/run-make-fulldeps/dylib-chain/Makefile b/tests/run-make/dylib-chain/Makefile
index 1139822f4ea..f1fea99c5ee 100644
--- a/tests/run-make-fulldeps/dylib-chain/Makefile
+++ b/tests/run-make/dylib-chain/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/dylib-chain/m1.rs b/tests/run-make/dylib-chain/m1.rs
index 08c3f37522c..08c3f37522c 100644
--- a/tests/run-make-fulldeps/dylib-chain/m1.rs
+++ b/tests/run-make/dylib-chain/m1.rs
diff --git a/tests/run-make-fulldeps/dylib-chain/m2.rs b/tests/run-make/dylib-chain/m2.rs
index 62176ddc9f3..62176ddc9f3 100644
--- a/tests/run-make-fulldeps/dylib-chain/m2.rs
+++ b/tests/run-make/dylib-chain/m2.rs
diff --git a/tests/run-make-fulldeps/dylib-chain/m3.rs b/tests/run-make/dylib-chain/m3.rs
index d213aeda9ac..d213aeda9ac 100644
--- a/tests/run-make-fulldeps/dylib-chain/m3.rs
+++ b/tests/run-make/dylib-chain/m3.rs
diff --git a/tests/run-make-fulldeps/dylib-chain/m4.rs b/tests/run-make/dylib-chain/m4.rs
index fa8ec6079de..fa8ec6079de 100644
--- a/tests/run-make-fulldeps/dylib-chain/m4.rs
+++ b/tests/run-make/dylib-chain/m4.rs
diff --git a/tests/run-make/emit-named-files/Makefile b/tests/run-make/emit-named-files/Makefile
index e081fa4793b..2b97b841fc0 100644
--- a/tests/run-make/emit-named-files/Makefile
+++ b/tests/run-make/emit-named-files/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 OUT=$(TMPDIR)/emit
 
diff --git a/tests/run-make/emit-path-unhashed/Makefile b/tests/run-make/emit-path-unhashed/Makefile
index c144d4aa92f..74047fe5f86 100644
--- a/tests/run-make/emit-path-unhashed/Makefile
+++ b/tests/run-make/emit-path-unhashed/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 OUT=$(TMPDIR)/emit
 
diff --git a/tests/run-make/emit-shared-files/Makefile b/tests/run-make/emit-shared-files/Makefile
index cad0c9e5b81..27c72b00368 100644
--- a/tests/run-make/emit-shared-files/Makefile
+++ b/tests/run-make/emit-shared-files/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 INVOCATION_ONLY = $(TMPDIR)/invocation-only
 TOOLCHAIN_ONLY = $(TMPDIR)/toolchain-only
diff --git a/tests/run-make-fulldeps/emit-stack-sizes/Makefile b/tests/run-make/emit-stack-sizes/Makefile
index f636ebd28f2..f636ebd28f2 100644
--- a/tests/run-make-fulldeps/emit-stack-sizes/Makefile
+++ b/tests/run-make/emit-stack-sizes/Makefile
diff --git a/tests/run-make-fulldeps/emit-stack-sizes/foo.rs b/tests/run-make/emit-stack-sizes/foo.rs
index ee51ae32886..ee51ae32886 100644
--- a/tests/run-make-fulldeps/emit-stack-sizes/foo.rs
+++ b/tests/run-make/emit-stack-sizes/foo.rs
diff --git a/tests/run-make-fulldeps/emit/Makefile b/tests/run-make/emit/Makefile
index 78e68bd6111..b3ca0b79fb0 100644
--- a/tests/run-make-fulldeps/emit/Makefile
+++ b/tests/run-make/emit/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/emit/test-24876.rs b/tests/run-make/emit/test-24876.rs
index 734e2ee4bd4..734e2ee4bd4 100644
--- a/tests/run-make-fulldeps/emit/test-24876.rs
+++ b/tests/run-make/emit/test-24876.rs
diff --git a/tests/run-make-fulldeps/emit/test-26235.rs b/tests/run-make/emit/test-26235.rs
index 07d975f3317..07d975f3317 100644
--- a/tests/run-make-fulldeps/emit/test-26235.rs
+++ b/tests/run-make/emit/test-26235.rs
diff --git a/tests/run-make/env-dep-info/Makefile b/tests/run-make/env-dep-info/Makefile
index 1675a61b167..bc0ffc2df1e 100644
--- a/tests/run-make/env-dep-info/Makefile
+++ b/tests/run-make/env-dep-info/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # FIXME(eddyb) provide `HOST_RUSTC` and `TARGET_RUSTC`
 # instead of hardcoding them everywhere they're needed.
diff --git a/tests/run-make-fulldeps/error-found-staticlib-instead-crate/Makefile b/tests/run-make/error-found-staticlib-instead-crate/Makefile
index 0eae41d720c..0eae41d720c 100644
--- a/tests/run-make-fulldeps/error-found-staticlib-instead-crate/Makefile
+++ b/tests/run-make/error-found-staticlib-instead-crate/Makefile
diff --git a/tests/run-make-fulldeps/error-found-staticlib-instead-crate/bar.rs b/tests/run-make/error-found-staticlib-instead-crate/bar.rs
index fe35f1f8e2e..fe35f1f8e2e 100644
--- a/tests/run-make-fulldeps/error-found-staticlib-instead-crate/bar.rs
+++ b/tests/run-make/error-found-staticlib-instead-crate/bar.rs
diff --git a/tests/run-make-fulldeps/error-found-staticlib-instead-crate/foo.rs b/tests/run-make/error-found-staticlib-instead-crate/foo.rs
index b76b4321d62..b76b4321d62 100644
--- a/tests/run-make-fulldeps/error-found-staticlib-instead-crate/foo.rs
+++ b/tests/run-make/error-found-staticlib-instead-crate/foo.rs
diff --git a/tests/run-make-fulldeps/error-writing-dependencies/Makefile b/tests/run-make/error-writing-dependencies/Makefile
index a5d30a647f8..a5d30a647f8 100644
--- a/tests/run-make-fulldeps/error-writing-dependencies/Makefile
+++ b/tests/run-make/error-writing-dependencies/Makefile
diff --git a/tests/run-make-fulldeps/error-writing-dependencies/foo.rs b/tests/run-make/error-writing-dependencies/foo.rs
index f328e4d9d04..f328e4d9d04 100644
--- a/tests/run-make-fulldeps/error-writing-dependencies/foo.rs
+++ b/tests/run-make/error-writing-dependencies/foo.rs
diff --git a/tests/run-make-fulldeps/exit-code/Makefile b/tests/run-make/exit-code/Makefile
index 3ffaafe9065..6458b71688f 100644
--- a/tests/run-make-fulldeps/exit-code/Makefile
+++ b/tests/run-make/exit-code/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/exit-code/compile-error.rs b/tests/run-make/exit-code/compile-error.rs
index a96c197606c..a96c197606c 100644
--- a/tests/run-make-fulldeps/exit-code/compile-error.rs
+++ b/tests/run-make/exit-code/compile-error.rs
diff --git a/tests/run-make-fulldeps/exit-code/lint-failure.rs b/tests/run-make/exit-code/lint-failure.rs
index df876ec237f..df876ec237f 100644
--- a/tests/run-make-fulldeps/exit-code/lint-failure.rs
+++ b/tests/run-make/exit-code/lint-failure.rs
diff --git a/tests/run-make-fulldeps/exit-code/success.rs b/tests/run-make/exit-code/success.rs
index 55b8e42b6e2..55b8e42b6e2 100644
--- a/tests/run-make-fulldeps/exit-code/success.rs
+++ b/tests/run-make/exit-code/success.rs
diff --git a/tests/run-make/export-executable-symbols/Makefile b/tests/run-make/export-executable-symbols/Makefile
index daa77c99dcd..c4d29aa2bf4 100644
--- a/tests/run-make/export-executable-symbols/Makefile
+++ b/tests/run-make/export-executable-symbols/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # ignore-wasm32
 # ignore-wasm64
diff --git a/tests/run-make-fulldeps/extern-diff-internal-name/Makefile b/tests/run-make/extern-diff-internal-name/Makefile
index 54596c2f029..250f82dfac0 100644
--- a/tests/run-make-fulldeps/extern-diff-internal-name/Makefile
+++ b/tests/run-make/extern-diff-internal-name/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/extern-diff-internal-name/lib.rs b/tests/run-make/extern-diff-internal-name/lib.rs
index ad96f70866e..ad96f70866e 100644
--- a/tests/run-make-fulldeps/extern-diff-internal-name/lib.rs
+++ b/tests/run-make/extern-diff-internal-name/lib.rs
diff --git a/tests/run-make-fulldeps/extern-diff-internal-name/test.rs b/tests/run-make/extern-diff-internal-name/test.rs
index 4c53dc28a80..4c53dc28a80 100644
--- a/tests/run-make-fulldeps/extern-diff-internal-name/test.rs
+++ b/tests/run-make/extern-diff-internal-name/test.rs
diff --git a/tests/run-make-fulldeps/extern-flag-disambiguates/Makefile b/tests/run-make/extern-flag-disambiguates/Makefile
index a8f142a6402..e54a537ecd0 100644
--- a/tests/run-make-fulldeps/extern-flag-disambiguates/Makefile
+++ b/tests/run-make/extern-flag-disambiguates/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # Attempt to build this dependency tree:
diff --git a/tests/run-make-fulldeps/extern-flag-disambiguates/a.rs b/tests/run-make/extern-flag-disambiguates/a.rs
index 2b1a3190150..2b1a3190150 100644
--- a/tests/run-make-fulldeps/extern-flag-disambiguates/a.rs
+++ b/tests/run-make/extern-flag-disambiguates/a.rs
diff --git a/tests/run-make-fulldeps/extern-flag-disambiguates/b.rs b/tests/run-make/extern-flag-disambiguates/b.rs
index 1d7a7339ce2..1d7a7339ce2 100644
--- a/tests/run-make-fulldeps/extern-flag-disambiguates/b.rs
+++ b/tests/run-make/extern-flag-disambiguates/b.rs
diff --git a/tests/run-make-fulldeps/extern-flag-disambiguates/c.rs b/tests/run-make/extern-flag-disambiguates/c.rs
index 3f9d143ed2d..3f9d143ed2d 100644
--- a/tests/run-make-fulldeps/extern-flag-disambiguates/c.rs
+++ b/tests/run-make/extern-flag-disambiguates/c.rs
diff --git a/tests/run-make-fulldeps/extern-flag-disambiguates/d.rs b/tests/run-make/extern-flag-disambiguates/d.rs
index 249c6a107ff..249c6a107ff 100644
--- a/tests/run-make-fulldeps/extern-flag-disambiguates/d.rs
+++ b/tests/run-make/extern-flag-disambiguates/d.rs
diff --git a/tests/run-make-fulldeps/extern-flag-fun/Makefile b/tests/run-make/extern-flag-fun/Makefile
index a0b7c15edb9..687cdfd7675 100644
--- a/tests/run-make-fulldeps/extern-flag-fun/Makefile
+++ b/tests/run-make/extern-flag-fun/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/extern-flag-fun/bar-alt.rs b/tests/run-make/extern-flag-fun/bar-alt.rs
index cdc6c27d800..cdc6c27d800 100644
--- a/tests/run-make-fulldeps/extern-flag-fun/bar-alt.rs
+++ b/tests/run-make/extern-flag-fun/bar-alt.rs
diff --git a/tests/run-make-fulldeps/extern-flag-fun/bar.rs b/tests/run-make/extern-flag-fun/bar.rs
index d11c69f812a..d11c69f812a 100644
--- a/tests/run-make-fulldeps/extern-flag-fun/bar.rs
+++ b/tests/run-make/extern-flag-fun/bar.rs
diff --git a/tests/run-make-fulldeps/extern-flag-fun/foo.rs b/tests/run-make/extern-flag-fun/foo.rs
index 0edda7d7b88..0edda7d7b88 100644
--- a/tests/run-make-fulldeps/extern-flag-fun/foo.rs
+++ b/tests/run-make/extern-flag-fun/foo.rs
diff --git a/tests/run-make-fulldeps/extern-flag-fun/gated_unstable.rs b/tests/run-make/extern-flag-fun/gated_unstable.rs
index 03600c830ff..03600c830ff 100644
--- a/tests/run-make-fulldeps/extern-flag-fun/gated_unstable.rs
+++ b/tests/run-make/extern-flag-fun/gated_unstable.rs
diff --git a/tests/run-make-fulldeps/extern-flag-fun/rustc.rs b/tests/run-make/extern-flag-fun/rustc.rs
index b76b4321d62..b76b4321d62 100644
--- a/tests/run-make-fulldeps/extern-flag-fun/rustc.rs
+++ b/tests/run-make/extern-flag-fun/rustc.rs
diff --git a/tests/run-make-fulldeps/extern-flag-pathless/Makefile b/tests/run-make/extern-flag-pathless/Makefile
index 0f23815b650..701bfcd28c8 100644
--- a/tests/run-make-fulldeps/extern-flag-pathless/Makefile
+++ b/tests/run-make/extern-flag-pathless/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # Test mixing pathless --extern with paths.
diff --git a/tests/run-make-fulldeps/extern-flag-pathless/bar-dynamic.rs b/tests/run-make/extern-flag-pathless/bar-dynamic.rs
index e2d68d517ff..e2d68d517ff 100644
--- a/tests/run-make-fulldeps/extern-flag-pathless/bar-dynamic.rs
+++ b/tests/run-make/extern-flag-pathless/bar-dynamic.rs
diff --git a/tests/run-make-fulldeps/extern-flag-pathless/bar-static.rs b/tests/run-make/extern-flag-pathless/bar-static.rs
index 240d8bde4d1..240d8bde4d1 100644
--- a/tests/run-make-fulldeps/extern-flag-pathless/bar-static.rs
+++ b/tests/run-make/extern-flag-pathless/bar-static.rs
diff --git a/tests/run-make-fulldeps/extern-flag-pathless/foo.rs b/tests/run-make/extern-flag-pathless/foo.rs
index 1ea64da7dad..1ea64da7dad 100644
--- a/tests/run-make-fulldeps/extern-flag-pathless/foo.rs
+++ b/tests/run-make/extern-flag-pathless/foo.rs
diff --git a/tests/run-make-fulldeps/extern-flag-rename-transitive/Makefile b/tests/run-make/extern-flag-rename-transitive/Makefile
index d16a8e20868..d16a8e20868 100644
--- a/tests/run-make-fulldeps/extern-flag-rename-transitive/Makefile
+++ b/tests/run-make/extern-flag-rename-transitive/Makefile
diff --git a/tests/run-make-fulldeps/extern-flag-rename-transitive/bar.rs b/tests/run-make/extern-flag-rename-transitive/bar.rs
index 94446a07d6c..94446a07d6c 100644
--- a/tests/run-make-fulldeps/extern-flag-rename-transitive/bar.rs
+++ b/tests/run-make/extern-flag-rename-transitive/bar.rs
diff --git a/tests/run-make-fulldeps/extern-flag-rename-transitive/baz.rs b/tests/run-make/extern-flag-rename-transitive/baz.rs
index c3908db3429..c3908db3429 100644
--- a/tests/run-make-fulldeps/extern-flag-rename-transitive/baz.rs
+++ b/tests/run-make/extern-flag-rename-transitive/baz.rs
diff --git a/tests/run-make-fulldeps/extern-flag-rename-transitive/foo.rs b/tests/run-make/extern-flag-rename-transitive/foo.rs
index c1bfaa6cab5..c1bfaa6cab5 100644
--- a/tests/run-make-fulldeps/extern-flag-rename-transitive/foo.rs
+++ b/tests/run-make/extern-flag-rename-transitive/foo.rs
diff --git a/tests/run-make-fulldeps/extern-fn-generic/Makefile b/tests/run-make/extern-fn-generic/Makefile
index 71746fb10cb..7dceea6cb88 100644
--- a/tests/run-make-fulldeps/extern-fn-generic/Makefile
+++ b/tests/run-make/extern-fn-generic/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: $(call NATIVE_STATICLIB,test)
diff --git a/tests/run-make-fulldeps/extern-fn-generic/test.c b/tests/run-make/extern-fn-generic/test.c
index a8504ff2afb..a8504ff2afb 100644
--- a/tests/run-make-fulldeps/extern-fn-generic/test.c
+++ b/tests/run-make/extern-fn-generic/test.c
diff --git a/tests/run-make-fulldeps/extern-fn-generic/test.rs b/tests/run-make/extern-fn-generic/test.rs
index c9baa489881..c9baa489881 100644
--- a/tests/run-make-fulldeps/extern-fn-generic/test.rs
+++ b/tests/run-make/extern-fn-generic/test.rs
diff --git a/tests/run-make-fulldeps/extern-fn-generic/testcrate.rs b/tests/run-make/extern-fn-generic/testcrate.rs
index 39f76e59ca0..39f76e59ca0 100644
--- a/tests/run-make-fulldeps/extern-fn-generic/testcrate.rs
+++ b/tests/run-make/extern-fn-generic/testcrate.rs
diff --git a/tests/run-make-fulldeps/extern-fn-mangle/Makefile b/tests/run-make/extern-fn-mangle/Makefile
index 4f5d026f213..3cbbf383996 100644
--- a/tests/run-make-fulldeps/extern-fn-mangle/Makefile
+++ b/tests/run-make/extern-fn-mangle/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: $(call NATIVE_STATICLIB,test)
diff --git a/tests/run-make-fulldeps/extern-fn-mangle/test.c b/tests/run-make/extern-fn-mangle/test.c
index e94d75083b8..e94d75083b8 100644
--- a/tests/run-make-fulldeps/extern-fn-mangle/test.c
+++ b/tests/run-make/extern-fn-mangle/test.c
diff --git a/tests/run-make-fulldeps/extern-fn-mangle/test.rs b/tests/run-make/extern-fn-mangle/test.rs
index 40b08f1ed70..40b08f1ed70 100644
--- a/tests/run-make-fulldeps/extern-fn-mangle/test.rs
+++ b/tests/run-make/extern-fn-mangle/test.rs
diff --git a/tests/run-make-fulldeps/extern-fn-reachable/Makefile b/tests/run-make/extern-fn-reachable/Makefile
index 05bdb8d65b7..3297251bfd1 100644
--- a/tests/run-make-fulldeps/extern-fn-reachable/Makefile
+++ b/tests/run-make/extern-fn-reachable/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # ignore-windows-msvc
diff --git a/tests/run-make-fulldeps/extern-fn-reachable/dylib.rs b/tests/run-make/extern-fn-reachable/dylib.rs
index cd017934870..cd017934870 100644
--- a/tests/run-make-fulldeps/extern-fn-reachable/dylib.rs
+++ b/tests/run-make/extern-fn-reachable/dylib.rs
diff --git a/tests/run-make-fulldeps/extern-fn-struct-passing-abi/Makefile b/tests/run-make/extern-fn-struct-passing-abi/Makefile
index 4f5d026f213..3cbbf383996 100644
--- a/tests/run-make-fulldeps/extern-fn-struct-passing-abi/Makefile
+++ b/tests/run-make/extern-fn-struct-passing-abi/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: $(call NATIVE_STATICLIB,test)
diff --git a/tests/run-make-fulldeps/extern-fn-struct-passing-abi/test.c b/tests/run-make/extern-fn-struct-passing-abi/test.c
index 136b07129e1..136b07129e1 100644
--- a/tests/run-make-fulldeps/extern-fn-struct-passing-abi/test.c
+++ b/tests/run-make/extern-fn-struct-passing-abi/test.c
diff --git a/tests/run-make-fulldeps/extern-fn-struct-passing-abi/test.rs b/tests/run-make/extern-fn-struct-passing-abi/test.rs
index afe0f52ef0b..afe0f52ef0b 100644
--- a/tests/run-make-fulldeps/extern-fn-struct-passing-abi/test.rs
+++ b/tests/run-make/extern-fn-struct-passing-abi/test.rs
diff --git a/tests/run-make-fulldeps/extern-fn-with-extern-types/Makefile b/tests/run-make/extern-fn-with-extern-types/Makefile
index 1fa708950d4..07ec503aaae 100644
--- a/tests/run-make-fulldeps/extern-fn-with-extern-types/Makefile
+++ b/tests/run-make/extern-fn-with-extern-types/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: $(call NATIVE_STATICLIB,ctest)
diff --git a/tests/run-make-fulldeps/extern-fn-with-extern-types/ctest.c b/tests/run-make/extern-fn-with-extern-types/ctest.c
index 3b6fb4cfce9..3b6fb4cfce9 100644
--- a/tests/run-make-fulldeps/extern-fn-with-extern-types/ctest.c
+++ b/tests/run-make/extern-fn-with-extern-types/ctest.c
diff --git a/tests/run-make-fulldeps/extern-fn-with-extern-types/test.rs b/tests/run-make/extern-fn-with-extern-types/test.rs
index 90a6ebaf1aa..90a6ebaf1aa 100644
--- a/tests/run-make-fulldeps/extern-fn-with-extern-types/test.rs
+++ b/tests/run-make/extern-fn-with-extern-types/test.rs
diff --git a/tests/run-make-fulldeps/extern-fn-with-packed-struct/Makefile b/tests/run-make/extern-fn-with-packed-struct/Makefile
index 4f5d026f213..3cbbf383996 100644
--- a/tests/run-make-fulldeps/extern-fn-with-packed-struct/Makefile
+++ b/tests/run-make/extern-fn-with-packed-struct/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: $(call NATIVE_STATICLIB,test)
diff --git a/tests/run-make-fulldeps/extern-fn-with-packed-struct/test.c b/tests/run-make/extern-fn-with-packed-struct/test.c
index c89f8272b1e..c89f8272b1e 100644
--- a/tests/run-make-fulldeps/extern-fn-with-packed-struct/test.c
+++ b/tests/run-make/extern-fn-with-packed-struct/test.c
diff --git a/tests/run-make-fulldeps/extern-fn-with-packed-struct/test.rs b/tests/run-make/extern-fn-with-packed-struct/test.rs
index 2f261efb510..2f261efb510 100644
--- a/tests/run-make-fulldeps/extern-fn-with-packed-struct/test.rs
+++ b/tests/run-make/extern-fn-with-packed-struct/test.rs
diff --git a/tests/run-make-fulldeps/extern-fn-with-union/Makefile b/tests/run-make/extern-fn-with-union/Makefile
index 40bae923e30..e6c8c993679 100644
--- a/tests/run-make-fulldeps/extern-fn-with-union/Makefile
+++ b/tests/run-make/extern-fn-with-union/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: $(call NATIVE_STATICLIB,ctest)
diff --git a/tests/run-make-fulldeps/extern-fn-with-union/ctest.c b/tests/run-make/extern-fn-with-union/ctest.c
index 86cb6453723..86cb6453723 100644
--- a/tests/run-make-fulldeps/extern-fn-with-union/ctest.c
+++ b/tests/run-make/extern-fn-with-union/ctest.c
diff --git a/tests/run-make-fulldeps/extern-fn-with-union/test.rs b/tests/run-make/extern-fn-with-union/test.rs
index 438fbddf31f..438fbddf31f 100644
--- a/tests/run-make-fulldeps/extern-fn-with-union/test.rs
+++ b/tests/run-make/extern-fn-with-union/test.rs
diff --git a/tests/run-make-fulldeps/extern-fn-with-union/testcrate.rs b/tests/run-make/extern-fn-with-union/testcrate.rs
index 28d91ff37c3..28d91ff37c3 100644
--- a/tests/run-make-fulldeps/extern-fn-with-union/testcrate.rs
+++ b/tests/run-make/extern-fn-with-union/testcrate.rs
diff --git a/tests/run-make-fulldeps/extern-multiple-copies/Makefile b/tests/run-make/extern-multiple-copies/Makefile
index 00668a6bc88..b0b84278eda 100644
--- a/tests/run-make-fulldeps/extern-multiple-copies/Makefile
+++ b/tests/run-make/extern-multiple-copies/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/extern-multiple-copies/bar.rs b/tests/run-make/extern-multiple-copies/bar.rs
index c6b3595f677..c6b3595f677 100644
--- a/tests/run-make-fulldeps/extern-multiple-copies/bar.rs
+++ b/tests/run-make/extern-multiple-copies/bar.rs
diff --git a/tests/run-make-fulldeps/extern-multiple-copies/foo1.rs b/tests/run-make/extern-multiple-copies/foo1.rs
index c1bfaa6cab5..c1bfaa6cab5 100644
--- a/tests/run-make-fulldeps/extern-multiple-copies/foo1.rs
+++ b/tests/run-make/extern-multiple-copies/foo1.rs
diff --git a/tests/run-make-fulldeps/extern-multiple-copies/foo2.rs b/tests/run-make/extern-multiple-copies/foo2.rs
index c1bfaa6cab5..c1bfaa6cab5 100644
--- a/tests/run-make-fulldeps/extern-multiple-copies/foo2.rs
+++ b/tests/run-make/extern-multiple-copies/foo2.rs
diff --git a/tests/run-make-fulldeps/extern-multiple-copies2/Makefile b/tests/run-make/extern-multiple-copies2/Makefile
index 84de2ebf34d..708b1c1b540 100644
--- a/tests/run-make-fulldeps/extern-multiple-copies2/Makefile
+++ b/tests/run-make/extern-multiple-copies2/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/extern-multiple-copies2/bar.rs b/tests/run-make/extern-multiple-copies2/bar.rs
index b3088152d6a..b3088152d6a 100644
--- a/tests/run-make-fulldeps/extern-multiple-copies2/bar.rs
+++ b/tests/run-make/extern-multiple-copies2/bar.rs
diff --git a/tests/run-make-fulldeps/extern-multiple-copies2/foo1.rs b/tests/run-make/extern-multiple-copies2/foo1.rs
index 4c778e52ff4..4c778e52ff4 100644
--- a/tests/run-make-fulldeps/extern-multiple-copies2/foo1.rs
+++ b/tests/run-make/extern-multiple-copies2/foo1.rs
diff --git a/tests/run-make-fulldeps/extern-multiple-copies2/foo2.rs b/tests/run-make/extern-multiple-copies2/foo2.rs
index 2be103507df..2be103507df 100644
--- a/tests/run-make-fulldeps/extern-multiple-copies2/foo2.rs
+++ b/tests/run-make/extern-multiple-copies2/foo2.rs
diff --git a/tests/run-make-fulldeps/extern-overrides-distribution/Makefile b/tests/run-make/extern-overrides-distribution/Makefile
index c57b062cd5d..bfd0dd6991b 100644
--- a/tests/run-make-fulldeps/extern-overrides-distribution/Makefile
+++ b/tests/run-make/extern-overrides-distribution/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/extern-overrides-distribution/libc.rs b/tests/run-make/extern-overrides-distribution/libc.rs
index ee51ae32886..ee51ae32886 100644
--- a/tests/run-make-fulldeps/extern-overrides-distribution/libc.rs
+++ b/tests/run-make/extern-overrides-distribution/libc.rs
diff --git a/tests/run-make-fulldeps/extern-overrides-distribution/main.rs b/tests/run-make/extern-overrides-distribution/main.rs
index 1290a8c5670..1290a8c5670 100644
--- a/tests/run-make-fulldeps/extern-overrides-distribution/main.rs
+++ b/tests/run-make/extern-overrides-distribution/main.rs
diff --git a/tests/run-make-fulldeps/extra-filename-with-temp-outputs/Makefile b/tests/run-make/extra-filename-with-temp-outputs/Makefile
index 470448cf50c..64745bef5b8 100644
--- a/tests/run-make-fulldeps/extra-filename-with-temp-outputs/Makefile
+++ b/tests/run-make/extra-filename-with-temp-outputs/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/extra-filename-with-temp-outputs/foo.rs b/tests/run-make/extra-filename-with-temp-outputs/foo.rs
index f328e4d9d04..f328e4d9d04 100644
--- a/tests/run-make-fulldeps/extra-filename-with-temp-outputs/foo.rs
+++ b/tests/run-make/extra-filename-with-temp-outputs/foo.rs
diff --git a/tests/run-make/fmt-write-bloat/Makefile b/tests/run-make/fmt-write-bloat/Makefile
index 53615775486..70e04b9af51 100644
--- a/tests/run-make/fmt-write-bloat/Makefile
+++ b/tests/run-make/fmt-write-bloat/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # ignore-windows
 
diff --git a/tests/run-make-fulldeps/foreign-double-unwind/Makefile b/tests/run-make/foreign-double-unwind/Makefile
index ea2fe9ff881..f20fe3ce66e 100644
--- a/tests/run-make-fulldeps/foreign-double-unwind/Makefile
+++ b/tests/run-make/foreign-double-unwind/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: foo
diff --git a/tests/run-make-fulldeps/foreign-double-unwind/foo.cpp b/tests/run-make/foreign-double-unwind/foo.cpp
index 69a8f11c2db..69a8f11c2db 100644
--- a/tests/run-make-fulldeps/foreign-double-unwind/foo.cpp
+++ b/tests/run-make/foreign-double-unwind/foo.cpp
diff --git a/tests/run-make-fulldeps/foreign-double-unwind/foo.rs b/tests/run-make/foreign-double-unwind/foo.rs
index cae8aa9402d..cae8aa9402d 100644
--- a/tests/run-make-fulldeps/foreign-double-unwind/foo.rs
+++ b/tests/run-make/foreign-double-unwind/foo.rs
diff --git a/tests/run-make-fulldeps/foreign-exceptions/Makefile b/tests/run-make/foreign-exceptions/Makefile
index 38fe2773df2..a8e20ffb1f4 100644
--- a/tests/run-make-fulldeps/foreign-exceptions/Makefile
+++ b/tests/run-make/foreign-exceptions/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: foo
diff --git a/tests/run-make-fulldeps/foreign-exceptions/foo.cpp b/tests/run-make/foreign-exceptions/foo.cpp
index 8182021a2cc..8182021a2cc 100644
--- a/tests/run-make-fulldeps/foreign-exceptions/foo.cpp
+++ b/tests/run-make/foreign-exceptions/foo.cpp
diff --git a/tests/run-make-fulldeps/foreign-exceptions/foo.rs b/tests/run-make/foreign-exceptions/foo.rs
index dd3b7c76f28..dd3b7c76f28 100644
--- a/tests/run-make-fulldeps/foreign-exceptions/foo.rs
+++ b/tests/run-make/foreign-exceptions/foo.rs
diff --git a/tests/run-make-fulldeps/foreign-rust-exceptions/Makefile b/tests/run-make/foreign-rust-exceptions/Makefile
index 50fca7f24e6..0d007bf1c49 100644
--- a/tests/run-make-fulldeps/foreign-rust-exceptions/Makefile
+++ b/tests/run-make/foreign-rust-exceptions/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 # ignore-i686-pc-windows-gnu
 
 # This test doesn't work on 32-bit MinGW as cdylib has its own copy of unwinder
diff --git a/tests/run-make-fulldeps/foreign-rust-exceptions/bar.rs b/tests/run-make/foreign-rust-exceptions/bar.rs
index 5f9efe32360..5f9efe32360 100644
--- a/tests/run-make-fulldeps/foreign-rust-exceptions/bar.rs
+++ b/tests/run-make/foreign-rust-exceptions/bar.rs
diff --git a/tests/run-make-fulldeps/foreign-rust-exceptions/foo.rs b/tests/run-make/foreign-rust-exceptions/foo.rs
index 266987c5b6d..266987c5b6d 100644
--- a/tests/run-make-fulldeps/foreign-rust-exceptions/foo.rs
+++ b/tests/run-make/foreign-rust-exceptions/foo.rs
diff --git a/tests/run-make-fulldeps/fpic/Makefile b/tests/run-make/fpic/Makefile
index 5986de3666f..c38dd8d6e8c 100644
--- a/tests/run-make-fulldeps/fpic/Makefile
+++ b/tests/run-make/fpic/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # ignore-windows
diff --git a/tests/run-make-fulldeps/fpic/hello.rs b/tests/run-make/fpic/hello.rs
index 45590d86ba6..45590d86ba6 100644
--- a/tests/run-make-fulldeps/fpic/hello.rs
+++ b/tests/run-make/fpic/hello.rs
diff --git a/tests/run-make-fulldeps/glibc-staticlib-args/Makefile b/tests/run-make/glibc-staticlib-args/Makefile
index 39e64bacf58..cad6c049e45 100644
--- a/tests/run-make-fulldeps/glibc-staticlib-args/Makefile
+++ b/tests/run-make/glibc-staticlib-args/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 # only-gnu
 # only-linux
 
diff --git a/tests/run-make-fulldeps/glibc-staticlib-args/library.rs b/tests/run-make/glibc-staticlib-args/library.rs
index 5ab627a2ac1..5ab627a2ac1 100644
--- a/tests/run-make-fulldeps/glibc-staticlib-args/library.rs
+++ b/tests/run-make/glibc-staticlib-args/library.rs
diff --git a/tests/run-make-fulldeps/glibc-staticlib-args/program.c b/tests/run-make/glibc-staticlib-args/program.c
index 30f6974b750..30f6974b750 100644
--- a/tests/run-make-fulldeps/glibc-staticlib-args/program.c
+++ b/tests/run-make/glibc-staticlib-args/program.c
diff --git a/tests/run-make-fulldeps/hir-tree/Makefile b/tests/run-make/hir-tree/Makefile
index b0450ea4bc5..b0450ea4bc5 100644
--- a/tests/run-make-fulldeps/hir-tree/Makefile
+++ b/tests/run-make/hir-tree/Makefile
diff --git a/tests/run-make-fulldeps/hir-tree/input.rs b/tests/run-make/hir-tree/input.rs
index 9d1a4e9e47d..9d1a4e9e47d 100644
--- a/tests/run-make-fulldeps/hir-tree/input.rs
+++ b/tests/run-make/hir-tree/input.rs
diff --git a/tests/run-make-fulldeps/include_bytes_deps/Makefile b/tests/run-make/include_bytes_deps/Makefile
index 696dfd207bb..696dfd207bb 100644
--- a/tests/run-make-fulldeps/include_bytes_deps/Makefile
+++ b/tests/run-make/include_bytes_deps/Makefile
diff --git a/tests/run-make-fulldeps/include_bytes_deps/input.bin b/tests/run-make/include_bytes_deps/input.bin
index cd0875583aa..cd0875583aa 100644
--- a/tests/run-make-fulldeps/include_bytes_deps/input.bin
+++ b/tests/run-make/include_bytes_deps/input.bin
diff --git a/tests/run-make-fulldeps/include_bytes_deps/input.md b/tests/run-make/include_bytes_deps/input.md
index 2a19b7405f7..2a19b7405f7 100644
--- a/tests/run-make-fulldeps/include_bytes_deps/input.md
+++ b/tests/run-make/include_bytes_deps/input.md
diff --git a/tests/run-make-fulldeps/include_bytes_deps/input.txt b/tests/run-make/include_bytes_deps/input.txt
index cd0875583aa..cd0875583aa 100644
--- a/tests/run-make-fulldeps/include_bytes_deps/input.txt
+++ b/tests/run-make/include_bytes_deps/input.txt
diff --git a/tests/run-make-fulldeps/include_bytes_deps/main.rs b/tests/run-make/include_bytes_deps/main.rs
index 2fd55699d44..2fd55699d44 100644
--- a/tests/run-make-fulldeps/include_bytes_deps/main.rs
+++ b/tests/run-make/include_bytes_deps/main.rs
diff --git a/tests/run-make-fulldeps/incr-add-rust-src-component/Makefile b/tests/run-make/incr-add-rust-src-component/Makefile
index 5c1d953cc05..fd09c2299f9 100644
--- a/tests/run-make-fulldeps/incr-add-rust-src-component/Makefile
+++ b/tests/run-make/incr-add-rust-src-component/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # rust-lang/rust#70924: Test that if we add rust-src component in between two
diff --git a/tests/run-make-fulldeps/incr-add-rust-src-component/main.rs b/tests/run-make/incr-add-rust-src-component/main.rs
index f6320bcb04a..f6320bcb04a 100644
--- a/tests/run-make-fulldeps/incr-add-rust-src-component/main.rs
+++ b/tests/run-make/incr-add-rust-src-component/main.rs
diff --git a/tests/run-make/incr-foreign-head-span/Makefile b/tests/run-make/incr-foreign-head-span/Makefile
index 712965eaa88..9d6102cdd72 100644
--- a/tests/run-make/incr-foreign-head-span/Makefile
+++ b/tests/run-make/incr-foreign-head-span/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # ignore-none no-std is not supported
 # ignore-nvptx64-nvidia-cuda FIXME: can't find crate for 'std'
diff --git a/tests/run-make/incr-prev-body-beyond-eof/Makefile b/tests/run-make/incr-prev-body-beyond-eof/Makefile
index 24eea3acaea..aa47552f52c 100644
--- a/tests/run-make/incr-prev-body-beyond-eof/Makefile
+++ b/tests/run-make/incr-prev-body-beyond-eof/Makefile
@@ -1,7 +1,7 @@
 # ignore-none no-std is not supported
 # ignore-nvptx64-nvidia-cuda FIXME: can't find crate for `std`
 
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # Tests that we don't ICE during incremental compilation after modifying a
 # function span such that its previous end line exceeds the number of lines
diff --git a/tests/run-make/incremental-session-fail/Makefile b/tests/run-make/incremental-session-fail/Makefile
index 6ce1370927b..f43eece2eb7 100644
--- a/tests/run-make/incremental-session-fail/Makefile
+++ b/tests/run-make/incremental-session-fail/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 SESSION_DIR := $(TMPDIR)/session
 OUTPUT_FILE := $(TMPDIR)/build-output
diff --git a/tests/run-make-fulldeps/inline-always-many-cgu/Makefile b/tests/run-make/inline-always-many-cgu/Makefile
index 9945821db28..9945821db28 100644
--- a/tests/run-make-fulldeps/inline-always-many-cgu/Makefile
+++ b/tests/run-make/inline-always-many-cgu/Makefile
diff --git a/tests/run-make-fulldeps/inline-always-many-cgu/foo.rs b/tests/run-make/inline-always-many-cgu/foo.rs
index 65fe69c16fe..65fe69c16fe 100644
--- a/tests/run-make-fulldeps/inline-always-many-cgu/foo.rs
+++ b/tests/run-make/inline-always-many-cgu/foo.rs
diff --git a/tests/run-make-fulldeps/interdependent-c-libraries/Makefile b/tests/run-make/interdependent-c-libraries/Makefile
index dc5b55a9925..53a696d82bf 100644
--- a/tests/run-make-fulldeps/interdependent-c-libraries/Makefile
+++ b/tests/run-make/interdependent-c-libraries/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # The rust crate foo will link to the native library foo, while the rust crate
diff --git a/tests/run-make-fulldeps/interdependent-c-libraries/bar.c b/tests/run-make/interdependent-c-libraries/bar.c
index 812c9753528..812c9753528 100644
--- a/tests/run-make-fulldeps/interdependent-c-libraries/bar.c
+++ b/tests/run-make/interdependent-c-libraries/bar.c
diff --git a/tests/run-make-fulldeps/interdependent-c-libraries/bar.rs b/tests/run-make/interdependent-c-libraries/bar.rs
index 3c2c3f21814..3c2c3f21814 100644
--- a/tests/run-make-fulldeps/interdependent-c-libraries/bar.rs
+++ b/tests/run-make/interdependent-c-libraries/bar.rs
diff --git a/tests/run-make-fulldeps/interdependent-c-libraries/foo.c b/tests/run-make/interdependent-c-libraries/foo.c
index 85e6cd8c390..85e6cd8c390 100644
--- a/tests/run-make-fulldeps/interdependent-c-libraries/foo.c
+++ b/tests/run-make/interdependent-c-libraries/foo.c
diff --git a/tests/run-make-fulldeps/interdependent-c-libraries/foo.rs b/tests/run-make/interdependent-c-libraries/foo.rs
index a69809726c6..a69809726c6 100644
--- a/tests/run-make-fulldeps/interdependent-c-libraries/foo.rs
+++ b/tests/run-make/interdependent-c-libraries/foo.rs
diff --git a/tests/run-make-fulldeps/interdependent-c-libraries/main.rs b/tests/run-make/interdependent-c-libraries/main.rs
index 2aba427df47..2aba427df47 100644
--- a/tests/run-make-fulldeps/interdependent-c-libraries/main.rs
+++ b/tests/run-make/interdependent-c-libraries/main.rs
diff --git a/tests/run-make-fulldeps/intrinsic-unreachable/Makefile b/tests/run-make/intrinsic-unreachable/Makefile
index ff9cc57098c..ff9cc57098c 100644
--- a/tests/run-make-fulldeps/intrinsic-unreachable/Makefile
+++ b/tests/run-make/intrinsic-unreachable/Makefile
diff --git a/tests/run-make-fulldeps/intrinsic-unreachable/exit-ret.rs b/tests/run-make/intrinsic-unreachable/exit-ret.rs
index e7b9694d9f2..e7b9694d9f2 100644
--- a/tests/run-make-fulldeps/intrinsic-unreachable/exit-ret.rs
+++ b/tests/run-make/intrinsic-unreachable/exit-ret.rs
diff --git a/tests/run-make-fulldeps/intrinsic-unreachable/exit-unreachable.rs b/tests/run-make/intrinsic-unreachable/exit-unreachable.rs
index ec85db733df..ec85db733df 100644
--- a/tests/run-make-fulldeps/intrinsic-unreachable/exit-unreachable.rs
+++ b/tests/run-make/intrinsic-unreachable/exit-unreachable.rs
diff --git a/tests/run-make-fulldeps/invalid-library/Makefile b/tests/run-make/invalid-library/Makefile
index 910d9af7b05..910d9af7b05 100644
--- a/tests/run-make-fulldeps/invalid-library/Makefile
+++ b/tests/run-make/invalid-library/Makefile
diff --git a/tests/run-make-fulldeps/invalid-library/foo.rs b/tests/run-make/invalid-library/foo.rs
index bb7b36c496e..bb7b36c496e 100644
--- a/tests/run-make-fulldeps/invalid-library/foo.rs
+++ b/tests/run-make/invalid-library/foo.rs
diff --git a/tests/run-make/invalid-so/Makefile b/tests/run-make/invalid-so/Makefile
index 5b82ecd207d..e36c7040bc6 100644
--- a/tests/run-make/invalid-so/Makefile
+++ b/tests/run-make/invalid-so/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 DYLIB_NAME := $(shell echo | $(RUSTC) --crate-name foo --crate-type dylib --print file-names -)
 
diff --git a/tests/run-make-fulldeps/invalid-staticlib/Makefile b/tests/run-make/invalid-staticlib/Makefile
index 3f0f74ce3cb..3f0f74ce3cb 100644
--- a/tests/run-make-fulldeps/invalid-staticlib/Makefile
+++ b/tests/run-make/invalid-staticlib/Makefile
diff --git a/tests/run-make/issue-10971-temps-dir/Makefile b/tests/run-make/issue-10971-temps-dir/Makefile
index e589bbffe60..6e1649a58d2 100644
--- a/tests/run-make/issue-10971-temps-dir/Makefile
+++ b/tests/run-make/issue-10971-temps-dir/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # Regression test for issue #10971
 # Running two invocations in parallel would overwrite each other's temp files.
diff --git a/tests/run-make-fulldeps/issue-11908/Makefile b/tests/run-make/issue-11908/Makefile
index 47005537e41..38586662fc7 100644
--- a/tests/run-make-fulldeps/issue-11908/Makefile
+++ b/tests/run-make/issue-11908/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 # This test ensures that if you have the same rlib or dylib at two locations
 # in the same path that you don't hit an assertion in the compiler.
 #
diff --git a/tests/run-make-fulldeps/issue-11908/bar.rs b/tests/run-make/issue-11908/bar.rs
index bb7b36c496e..bb7b36c496e 100644
--- a/tests/run-make-fulldeps/issue-11908/bar.rs
+++ b/tests/run-make/issue-11908/bar.rs
diff --git a/tests/run-make-fulldeps/issue-11908/foo.rs b/tests/run-make/issue-11908/foo.rs
index 82b2dfe9fdb..82b2dfe9fdb 100644
--- a/tests/run-make-fulldeps/issue-11908/foo.rs
+++ b/tests/run-make/issue-11908/foo.rs
diff --git a/tests/run-make-fulldeps/issue-14500/Makefile b/tests/run-make/issue-14500/Makefile
index 52550e57018..eeab48de3b9 100644
--- a/tests/run-make-fulldeps/issue-14500/Makefile
+++ b/tests/run-make/issue-14500/Makefile
@@ -1,5 +1,7 @@
 include ../tools.mk
 
+# ignore-cross-compile
+
 # Test to make sure that reachable extern fns are always available in final
 # productcs, including when LTO is used. In this test, the `foo` crate has a
 # reahable symbol, and is a dependency of the `bar` crate. When the `bar` crate
diff --git a/tests/run-make-fulldeps/issue-14500/bar.rs b/tests/run-make/issue-14500/bar.rs
index 49af74e1b74..49af74e1b74 100644
--- a/tests/run-make-fulldeps/issue-14500/bar.rs
+++ b/tests/run-make/issue-14500/bar.rs
diff --git a/tests/run-make-fulldeps/issue-14500/foo.c b/tests/run-make/issue-14500/foo.c
index 2353d400df3..2353d400df3 100644
--- a/tests/run-make-fulldeps/issue-14500/foo.c
+++ b/tests/run-make/issue-14500/foo.c
diff --git a/tests/run-make-fulldeps/issue-14500/foo.rs b/tests/run-make/issue-14500/foo.rs
index 7c19c1f2c67..7c19c1f2c67 100644
--- a/tests/run-make-fulldeps/issue-14500/foo.rs
+++ b/tests/run-make/issue-14500/foo.rs
diff --git a/tests/run-make-fulldeps/issue-14698/Makefile b/tests/run-make/issue-14698/Makefile
index a1cfb5abab5..a1cfb5abab5 100644
--- a/tests/run-make-fulldeps/issue-14698/Makefile
+++ b/tests/run-make/issue-14698/Makefile
diff --git a/tests/run-make-fulldeps/issue-14698/foo.rs b/tests/run-make/issue-14698/foo.rs
index f328e4d9d04..f328e4d9d04 100644
--- a/tests/run-make-fulldeps/issue-14698/foo.rs
+++ b/tests/run-make/issue-14698/foo.rs
diff --git a/tests/run-make-fulldeps/issue-15460/Makefile b/tests/run-make/issue-15460/Makefile
index 1648d0c0c9b..a36a085fa6f 100644
--- a/tests/run-make-fulldeps/issue-15460/Makefile
+++ b/tests/run-make/issue-15460/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: $(call NATIVE_STATICLIB,foo)
diff --git a/tests/run-make-fulldeps/issue-15460/bar.rs b/tests/run-make/issue-15460/bar.rs
index e66aeb6bd39..e66aeb6bd39 100644
--- a/tests/run-make-fulldeps/issue-15460/bar.rs
+++ b/tests/run-make/issue-15460/bar.rs
diff --git a/tests/run-make-fulldeps/issue-15460/foo.c b/tests/run-make/issue-15460/foo.c
index fdf595b574e..fdf595b574e 100644
--- a/tests/run-make-fulldeps/issue-15460/foo.c
+++ b/tests/run-make/issue-15460/foo.c
diff --git a/tests/run-make-fulldeps/issue-15460/foo.rs b/tests/run-make/issue-15460/foo.rs
index b4eaa0b31c5..b4eaa0b31c5 100644
--- a/tests/run-make-fulldeps/issue-15460/foo.rs
+++ b/tests/run-make/issue-15460/foo.rs
diff --git a/tests/run-make-fulldeps/issue-18943/Makefile b/tests/run-make/issue-18943/Makefile
index fc40d756d6f..fc40d756d6f 100644
--- a/tests/run-make-fulldeps/issue-18943/Makefile
+++ b/tests/run-make/issue-18943/Makefile
diff --git a/tests/run-make-fulldeps/issue-18943/foo.rs b/tests/run-make/issue-18943/foo.rs
index d18400dd3a5..d18400dd3a5 100644
--- a/tests/run-make-fulldeps/issue-18943/foo.rs
+++ b/tests/run-make/issue-18943/foo.rs
diff --git a/tests/run-make-fulldeps/issue-20626/Makefile b/tests/run-make/issue-20626/Makefile
index f76f31e794a..63eee910a9c 100644
--- a/tests/run-make-fulldeps/issue-20626/Makefile
+++ b/tests/run-make/issue-20626/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # Test output to be four
diff --git a/tests/run-make-fulldeps/issue-20626/foo.rs b/tests/run-make/issue-20626/foo.rs
index a474e234e72..a474e234e72 100644
--- a/tests/run-make-fulldeps/issue-20626/foo.rs
+++ b/tests/run-make/issue-20626/foo.rs
diff --git a/tests/run-make-fulldeps/issue-22131/Makefile b/tests/run-make/issue-22131/Makefile
index 770f4b04ec3..4f33a4659cc 100644
--- a/tests/run-make-fulldeps/issue-22131/Makefile
+++ b/tests/run-make/issue-22131/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: foo.rs
diff --git a/tests/run-make-fulldeps/issue-22131/foo.rs b/tests/run-make/issue-22131/foo.rs
index 33255d76879..33255d76879 100644
--- a/tests/run-make-fulldeps/issue-22131/foo.rs
+++ b/tests/run-make/issue-22131/foo.rs
diff --git a/tests/run-make-fulldeps/issue-24445/Makefile b/tests/run-make/issue-24445/Makefile
index 2a12226a6c0..a13910aa73e 100644
--- a/tests/run-make-fulldeps/issue-24445/Makefile
+++ b/tests/run-make/issue-24445/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # only-linux
diff --git a/tests/run-make-fulldeps/issue-24445/foo.c b/tests/run-make/issue-24445/foo.c
index bb4036b06e1..bb4036b06e1 100644
--- a/tests/run-make-fulldeps/issue-24445/foo.c
+++ b/tests/run-make/issue-24445/foo.c
diff --git a/tests/run-make-fulldeps/issue-24445/foo.rs b/tests/run-make/issue-24445/foo.rs
index b67f3847cd4..b67f3847cd4 100644
--- a/tests/run-make-fulldeps/issue-24445/foo.rs
+++ b/tests/run-make/issue-24445/foo.rs
diff --git a/tests/run-make/issue-25581/Makefile b/tests/run-make/issue-25581/Makefile
new file mode 100644
index 00000000000..3cbbf383996
--- /dev/null
+++ b/tests/run-make/issue-25581/Makefile
@@ -0,0 +1,6 @@
+# ignore-cross-compile
+include ../tools.mk
+
+all: $(call NATIVE_STATICLIB,test)
+	$(RUSTC) test.rs
+	$(call RUN,test) || exit 1
diff --git a/tests/run-make-fulldeps/issue-25581/test.c b/tests/run-make/issue-25581/test.c
index 52fbf78510a..52fbf78510a 100644
--- a/tests/run-make-fulldeps/issue-25581/test.c
+++ b/tests/run-make/issue-25581/test.c
diff --git a/tests/run-make-fulldeps/issue-25581/test.rs b/tests/run-make/issue-25581/test.rs
index ba6749c9722..ba6749c9722 100644
--- a/tests/run-make-fulldeps/issue-25581/test.rs
+++ b/tests/run-make/issue-25581/test.rs
diff --git a/tests/run-make-fulldeps/issue-26006/Makefile b/tests/run-make/issue-26006/Makefile
index 0ff07302002..b679c121530 100644
--- a/tests/run-make-fulldeps/issue-26006/Makefile
+++ b/tests/run-make/issue-26006/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # ignore-windows
diff --git a/tests/run-make-fulldeps/issue-26006/in/libc/lib.rs b/tests/run-make/issue-26006/in/libc/lib.rs
index 23f2bf51800..23f2bf51800 100644
--- a/tests/run-make-fulldeps/issue-26006/in/libc/lib.rs
+++ b/tests/run-make/issue-26006/in/libc/lib.rs
diff --git a/tests/run-make-fulldeps/issue-26006/in/time/lib.rs b/tests/run-make/issue-26006/in/time/lib.rs
index 87f2f824a36..87f2f824a36 100644
--- a/tests/run-make-fulldeps/issue-26006/in/time/lib.rs
+++ b/tests/run-make/issue-26006/in/time/lib.rs
diff --git a/tests/run-make-fulldeps/issue-26092/Makefile b/tests/run-make/issue-26092/Makefile
index 96822e7690b..96822e7690b 100644
--- a/tests/run-make-fulldeps/issue-26092/Makefile
+++ b/tests/run-make/issue-26092/Makefile
diff --git a/tests/run-make-fulldeps/issue-26092/blank.rs b/tests/run-make/issue-26092/blank.rs
index f328e4d9d04..f328e4d9d04 100644
--- a/tests/run-make-fulldeps/issue-26092/blank.rs
+++ b/tests/run-make/issue-26092/blank.rs
diff --git a/tests/run-make-fulldeps/issue-28595/Makefile b/tests/run-make/issue-28595/Makefile
index 30a1d9c560a..258f9788aaf 100644
--- a/tests/run-make-fulldeps/issue-28595/Makefile
+++ b/tests/run-make/issue-28595/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: $(call NATIVE_STATICLIB,a) $(call NATIVE_STATICLIB,b)
diff --git a/tests/run-make-fulldeps/issue-28595/a.c b/tests/run-make/issue-28595/a.c
index 7bfd83cca21..7bfd83cca21 100644
--- a/tests/run-make-fulldeps/issue-28595/a.c
+++ b/tests/run-make/issue-28595/a.c
diff --git a/tests/run-make-fulldeps/issue-28595/a.rs b/tests/run-make/issue-28595/a.rs
index 07863cf64d6..07863cf64d6 100644
--- a/tests/run-make-fulldeps/issue-28595/a.rs
+++ b/tests/run-make/issue-28595/a.rs
diff --git a/tests/run-make-fulldeps/issue-28595/b.c b/tests/run-make/issue-28595/b.c
index 6aecb5f9e04..6aecb5f9e04 100644
--- a/tests/run-make-fulldeps/issue-28595/b.c
+++ b/tests/run-make/issue-28595/b.c
diff --git a/tests/run-make-fulldeps/issue-28595/b.rs b/tests/run-make/issue-28595/b.rs
index 1f389859fad..1f389859fad 100644
--- a/tests/run-make-fulldeps/issue-28595/b.rs
+++ b/tests/run-make/issue-28595/b.rs
diff --git a/tests/run-make-fulldeps/issue-28766/Makefile b/tests/run-make/issue-28766/Makefile
index 96d0bdc2b2a..96d0bdc2b2a 100644
--- a/tests/run-make-fulldeps/issue-28766/Makefile
+++ b/tests/run-make/issue-28766/Makefile
diff --git a/tests/run-make-fulldeps/issue-28766/foo.rs b/tests/run-make/issue-28766/foo.rs
index 1dcabe42dc1..1dcabe42dc1 100644
--- a/tests/run-make-fulldeps/issue-28766/foo.rs
+++ b/tests/run-make/issue-28766/foo.rs
diff --git a/tests/run-make-fulldeps/issue-28766/main.rs b/tests/run-make/issue-28766/main.rs
index de12b1fd9dc..de12b1fd9dc 100644
--- a/tests/run-make-fulldeps/issue-28766/main.rs
+++ b/tests/run-make/issue-28766/main.rs
diff --git a/tests/run-make-fulldeps/issue-30063/Makefile b/tests/run-make/issue-30063/Makefile
index e4ede598f7b..8a69ca79f51 100644
--- a/tests/run-make-fulldeps/issue-30063/Makefile
+++ b/tests/run-make/issue-30063/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/issue-30063/foo.rs b/tests/run-make/issue-30063/foo.rs
index 45590d86ba6..45590d86ba6 100644
--- a/tests/run-make-fulldeps/issue-30063/foo.rs
+++ b/tests/run-make/issue-30063/foo.rs
diff --git a/tests/run-make-fulldeps/issue-33329/Makefile b/tests/run-make/issue-33329/Makefile
index 9c149440d8e..9c149440d8e 100644
--- a/tests/run-make-fulldeps/issue-33329/Makefile
+++ b/tests/run-make/issue-33329/Makefile
diff --git a/tests/run-make-fulldeps/issue-33329/main.rs b/tests/run-make/issue-33329/main.rs
index f328e4d9d04..f328e4d9d04 100644
--- a/tests/run-make-fulldeps/issue-33329/main.rs
+++ b/tests/run-make/issue-33329/main.rs
diff --git a/tests/run-make-fulldeps/issue-35164/Makefile b/tests/run-make/issue-35164/Makefile
index 38aa6f1265f..38aa6f1265f 100644
--- a/tests/run-make-fulldeps/issue-35164/Makefile
+++ b/tests/run-make/issue-35164/Makefile
diff --git a/tests/run-make-fulldeps/issue-35164/main.rs b/tests/run-make/issue-35164/main.rs
index 1333d63224c..1333d63224c 100644
--- a/tests/run-make-fulldeps/issue-35164/main.rs
+++ b/tests/run-make/issue-35164/main.rs
diff --git a/tests/run-make-fulldeps/issue-35164/submodule/mod.rs b/tests/run-make/issue-35164/submodule/mod.rs
index a9045b242fb..a9045b242fb 100644
--- a/tests/run-make-fulldeps/issue-35164/submodule/mod.rs
+++ b/tests/run-make/issue-35164/submodule/mod.rs
diff --git a/tests/run-make/issue-36710/Makefile b/tests/run-make/issue-36710/Makefile
index c6b71f5fbd4..7b91107a234 100644
--- a/tests/run-make/issue-36710/Makefile
+++ b/tests/run-make/issue-36710/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 # ignore-none no-std is not supported
 # ignore-wasm32 FIXME: don't attempt to compile C++ to WASM
 # ignore-wasm64 FIXME: don't attempt to compile C++ to WASM
@@ -6,7 +7,7 @@
 #                    (see dist-i586-gnu-i586-i686-musl Dockerfile)
 # ignore-sgx
 
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 all: foo
 	$(call RUN,foo)
diff --git a/tests/run-make-fulldeps/issue-37839/Makefile b/tests/run-make/issue-37839/Makefile
index de50bd71379..6bad27b7bdc 100644
--- a/tests/run-make-fulldeps/issue-37839/Makefile
+++ b/tests/run-make/issue-37839/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/issue-37839/a.rs b/tests/run-make/issue-37839/a.rs
index b5dffac3ff6..b5dffac3ff6 100644
--- a/tests/run-make-fulldeps/issue-37839/a.rs
+++ b/tests/run-make/issue-37839/a.rs
diff --git a/tests/run-make-fulldeps/issue-37839/b.rs b/tests/run-make/issue-37839/b.rs
index 355d2b16527..355d2b16527 100644
--- a/tests/run-make-fulldeps/issue-37839/b.rs
+++ b/tests/run-make/issue-37839/b.rs
diff --git a/tests/run-make-fulldeps/issue-37839/c.rs b/tests/run-make/issue-37839/c.rs
index 4c7ce01b6a0..4c7ce01b6a0 100644
--- a/tests/run-make-fulldeps/issue-37839/c.rs
+++ b/tests/run-make/issue-37839/c.rs
diff --git a/tests/run-make-fulldeps/issue-37893/Makefile b/tests/run-make/issue-37893/Makefile
index 33a60830e5d..44e4a321a30 100644
--- a/tests/run-make-fulldeps/issue-37893/Makefile
+++ b/tests/run-make/issue-37893/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/issue-37893/a.rs b/tests/run-make/issue-37893/a.rs
index b5dffac3ff6..b5dffac3ff6 100644
--- a/tests/run-make-fulldeps/issue-37893/a.rs
+++ b/tests/run-make/issue-37893/a.rs
diff --git a/tests/run-make-fulldeps/issue-37893/b.rs b/tests/run-make/issue-37893/b.rs
index 355d2b16527..355d2b16527 100644
--- a/tests/run-make-fulldeps/issue-37893/b.rs
+++ b/tests/run-make/issue-37893/b.rs
diff --git a/tests/run-make-fulldeps/issue-37893/c.rs b/tests/run-make/issue-37893/c.rs
index b9c2155728c..b9c2155728c 100644
--- a/tests/run-make-fulldeps/issue-37893/c.rs
+++ b/tests/run-make/issue-37893/c.rs
diff --git a/tests/run-make-fulldeps/issue-38237/Makefile b/tests/run-make/issue-38237/Makefile
index 75121d04012..80dddc5bd13 100644
--- a/tests/run-make-fulldeps/issue-38237/Makefile
+++ b/tests/run-make/issue-38237/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/issue-38237/bar.rs b/tests/run-make/issue-38237/bar.rs
index 2b839f3a3b3..2b839f3a3b3 100644
--- a/tests/run-make-fulldeps/issue-38237/bar.rs
+++ b/tests/run-make/issue-38237/bar.rs
diff --git a/tests/run-make-fulldeps/issue-38237/baz.rs b/tests/run-make/issue-38237/baz.rs
index cd2425f9b69..cd2425f9b69 100644
--- a/tests/run-make-fulldeps/issue-38237/baz.rs
+++ b/tests/run-make/issue-38237/baz.rs
diff --git a/tests/run-make-fulldeps/issue-38237/foo.rs b/tests/run-make/issue-38237/foo.rs
index a106e4fde5c..a106e4fde5c 100644
--- a/tests/run-make-fulldeps/issue-38237/foo.rs
+++ b/tests/run-make/issue-38237/foo.rs
diff --git a/tests/run-make-fulldeps/issue-40535/Makefile b/tests/run-make/issue-40535/Makefile
index 155c8825214..155c8825214 100644
--- a/tests/run-make-fulldeps/issue-40535/Makefile
+++ b/tests/run-make/issue-40535/Makefile
diff --git a/tests/run-make-fulldeps/issue-40535/bar.rs b/tests/run-make/issue-40535/bar.rs
index b02b28f59d9..b02b28f59d9 100644
--- a/tests/run-make-fulldeps/issue-40535/bar.rs
+++ b/tests/run-make/issue-40535/bar.rs
diff --git a/tests/run-make-fulldeps/issue-40535/baz.rs b/tests/run-make/issue-40535/baz.rs
index 83be6e807e0..83be6e807e0 100644
--- a/tests/run-make-fulldeps/issue-40535/baz.rs
+++ b/tests/run-make/issue-40535/baz.rs
diff --git a/tests/run-make-fulldeps/issue-40535/foo.rs b/tests/run-make/issue-40535/foo.rs
index 27020266425..27020266425 100644
--- a/tests/run-make-fulldeps/issue-40535/foo.rs
+++ b/tests/run-make/issue-40535/foo.rs
diff --git a/tests/run-make-fulldeps/issue-46239/Makefile b/tests/run-make/issue-46239/Makefile
index a93ef321298..0006ced2515 100644
--- a/tests/run-make-fulldeps/issue-46239/Makefile
+++ b/tests/run-make/issue-46239/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/issue-46239/main.rs b/tests/run-make/issue-46239/main.rs
index b7df5cf4d81..b7df5cf4d81 100644
--- a/tests/run-make-fulldeps/issue-46239/main.rs
+++ b/tests/run-make/issue-46239/main.rs
diff --git a/tests/run-make/issue-47384/Makefile b/tests/run-make/issue-47384/Makefile
index 0aadf6c88c9..afc77cb275a 100644
--- a/tests/run-make/issue-47384/Makefile
+++ b/tests/run-make/issue-47384/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # only-linux
 # ignore-cross-compile
diff --git a/tests/run-make-fulldeps/issue-47551/Makefile b/tests/run-make/issue-47551/Makefile
index 5a6ac725701..5a6ac725701 100644
--- a/tests/run-make-fulldeps/issue-47551/Makefile
+++ b/tests/run-make/issue-47551/Makefile
diff --git a/tests/run-make-fulldeps/issue-47551/eh_frame-terminator.rs b/tests/run-make/issue-47551/eh_frame-terminator.rs
index a2c7a31b7c3..a2c7a31b7c3 100644
--- a/tests/run-make-fulldeps/issue-47551/eh_frame-terminator.rs
+++ b/tests/run-make/issue-47551/eh_frame-terminator.rs
diff --git a/tests/run-make-fulldeps/issue-51671/Makefile b/tests/run-make/issue-51671/Makefile
index c9364536992..c9364536992 100644
--- a/tests/run-make-fulldeps/issue-51671/Makefile
+++ b/tests/run-make/issue-51671/Makefile
diff --git a/tests/run-make-fulldeps/issue-51671/app.rs b/tests/run-make/issue-51671/app.rs
index e9dc1e9744f..e9dc1e9744f 100644
--- a/tests/run-make-fulldeps/issue-51671/app.rs
+++ b/tests/run-make/issue-51671/app.rs
diff --git a/tests/run-make-fulldeps/issue-53964/Makefile b/tests/run-make/issue-53964/Makefile
index 6bd83021374..6bd83021374 100644
--- a/tests/run-make-fulldeps/issue-53964/Makefile
+++ b/tests/run-make/issue-53964/Makefile
diff --git a/tests/run-make-fulldeps/issue-53964/app.rs b/tests/run-make/issue-53964/app.rs
index 8127b9578bf..8127b9578bf 100644
--- a/tests/run-make-fulldeps/issue-53964/app.rs
+++ b/tests/run-make/issue-53964/app.rs
diff --git a/tests/run-make-fulldeps/issue-53964/panic.rs b/tests/run-make/issue-53964/panic.rs
index a8781205071..a8781205071 100644
--- a/tests/run-make-fulldeps/issue-53964/panic.rs
+++ b/tests/run-make/issue-53964/panic.rs
diff --git a/tests/run-make-fulldeps/issue-64153/Makefile b/tests/run-make/issue-64153/Makefile
index f42ea620fb9..f42ea620fb9 100644
--- a/tests/run-make-fulldeps/issue-64153/Makefile
+++ b/tests/run-make/issue-64153/Makefile
diff --git a/tests/run-make-fulldeps/issue-64153/downstream.rs b/tests/run-make/issue-64153/downstream.rs
index e03704665d4..e03704665d4 100644
--- a/tests/run-make-fulldeps/issue-64153/downstream.rs
+++ b/tests/run-make/issue-64153/downstream.rs
diff --git a/tests/run-make-fulldeps/issue-64153/upstream.rs b/tests/run-make/issue-64153/upstream.rs
index 861a00298ea..861a00298ea 100644
--- a/tests/run-make-fulldeps/issue-64153/upstream.rs
+++ b/tests/run-make/issue-64153/upstream.rs
diff --git a/tests/run-make-fulldeps/issue-68794-textrel-on-minimal-lib/Makefile b/tests/run-make/issue-68794-textrel-on-minimal-lib/Makefile
index 13983f4ffe0..6140b39c0e2 100644
--- a/tests/run-make-fulldeps/issue-68794-textrel-on-minimal-lib/Makefile
+++ b/tests/run-make/issue-68794-textrel-on-minimal-lib/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 # Regression test for issue #68794
 #
 # Verify that no text relocations are accidentally introduced by linking a
diff --git a/tests/run-make-fulldeps/issue-68794-textrel-on-minimal-lib/bar.c b/tests/run-make/issue-68794-textrel-on-minimal-lib/bar.c
index bb4036b06e1..bb4036b06e1 100644
--- a/tests/run-make-fulldeps/issue-68794-textrel-on-minimal-lib/bar.c
+++ b/tests/run-make/issue-68794-textrel-on-minimal-lib/bar.c
diff --git a/tests/run-make-fulldeps/issue-68794-textrel-on-minimal-lib/foo.rs b/tests/run-make/issue-68794-textrel-on-minimal-lib/foo.rs
index a3e865b638e..a3e865b638e 100644
--- a/tests/run-make-fulldeps/issue-68794-textrel-on-minimal-lib/foo.rs
+++ b/tests/run-make/issue-68794-textrel-on-minimal-lib/foo.rs
diff --git a/tests/run-make-fulldeps/issue-69368/Makefile b/tests/run-make/issue-69368/Makefile
index 41770475db0..b1229d1b07f 100644
--- a/tests/run-make-fulldeps/issue-69368/Makefile
+++ b/tests/run-make/issue-69368/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # Test that previously triggered a linker failure with root cause
diff --git a/tests/run-make-fulldeps/issue-69368/a.rs b/tests/run-make/issue-69368/a.rs
index a54f429550e..a54f429550e 100644
--- a/tests/run-make-fulldeps/issue-69368/a.rs
+++ b/tests/run-make/issue-69368/a.rs
diff --git a/tests/run-make-fulldeps/issue-69368/b.rs b/tests/run-make/issue-69368/b.rs
index 4d6af026656..4d6af026656 100644
--- a/tests/run-make-fulldeps/issue-69368/b.rs
+++ b/tests/run-make/issue-69368/b.rs
diff --git a/tests/run-make-fulldeps/issue-69368/c.rs b/tests/run-make/issue-69368/c.rs
index 729c4249a05..729c4249a05 100644
--- a/tests/run-make-fulldeps/issue-69368/c.rs
+++ b/tests/run-make/issue-69368/c.rs
diff --git a/tests/run-make/issue-71519/Makefile b/tests/run-make/issue-71519/Makefile
index 57497f52053..0ee83328bb6 100644
--- a/tests/run-make/issue-71519/Makefile
+++ b/tests/run-make/issue-71519/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # ignore-msvc
 # needs-rust-lld
diff --git a/tests/run-make-fulldeps/issue-7349/Makefile b/tests/run-make/issue-7349/Makefile
index dc073b77fe1..dc073b77fe1 100644
--- a/tests/run-make-fulldeps/issue-7349/Makefile
+++ b/tests/run-make/issue-7349/Makefile
diff --git a/tests/run-make-fulldeps/issue-7349/foo.rs b/tests/run-make/issue-7349/foo.rs
index 246a1259580..246a1259580 100644
--- a/tests/run-make-fulldeps/issue-7349/foo.rs
+++ b/tests/run-make/issue-7349/foo.rs
diff --git a/tests/run-make-fulldeps/issue-83045/Makefile b/tests/run-make/issue-83045/Makefile
index fc180ccfe28..7053da00f6b 100644
--- a/tests/run-make-fulldeps/issue-83045/Makefile
+++ b/tests/run-make/issue-83045/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # This test case creates a situation where the crate loader would run
 # into an ICE when confronted with an invalid setup where it cannot
diff --git a/tests/run-make-fulldeps/issue-83045/a.rs b/tests/run-make/issue-83045/a.rs
index 66d9f758e9d..66d9f758e9d 100644
--- a/tests/run-make-fulldeps/issue-83045/a.rs
+++ b/tests/run-make/issue-83045/a.rs
diff --git a/tests/run-make-fulldeps/issue-83045/b.rs b/tests/run-make/issue-83045/b.rs
index f4876cfa457..f4876cfa457 100644
--- a/tests/run-make-fulldeps/issue-83045/b.rs
+++ b/tests/run-make/issue-83045/b.rs
diff --git a/tests/run-make-fulldeps/issue-83045/c.rs b/tests/run-make/issue-83045/c.rs
index e0c4525499e..e0c4525499e 100644
--- a/tests/run-make-fulldeps/issue-83045/c.rs
+++ b/tests/run-make/issue-83045/c.rs
diff --git a/tests/run-make/issue-83112-incr-test-moved-file/Makefile b/tests/run-make/issue-83112-incr-test-moved-file/Makefile
index 2f796e5b2fc..a00088cd9d6 100644
--- a/tests/run-make/issue-83112-incr-test-moved-file/Makefile
+++ b/tests/run-make/issue-83112-incr-test-moved-file/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # ignore-none no-std is not supported
 # ignore-nvptx64-nvidia-cuda FIXME: can't find crate for 'std'
diff --git a/tests/run-make-fulldeps/issue-84395-lto-embed-bitcode/Makefile b/tests/run-make/issue-84395-lto-embed-bitcode/Makefile
index 879ce174339..95c8d08a18b 100644
--- a/tests/run-make-fulldeps/issue-84395-lto-embed-bitcode/Makefile
+++ b/tests/run-make/issue-84395-lto-embed-bitcode/Makefile
@@ -3,7 +3,7 @@
 # This test makes sure the embed bitcode in elf created with
 # lto-embed-bitcode=optimized is valid llvm BC module.
 
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 all:
 	$(RUSTC) test.rs --target $(TARGET) -Clink-arg=-fuse-ld=lld -Clinker-plugin-lto -Clinker=$(CLANG) -Clink-arg=-Wl,--plugin-opt=-lto-embed-bitcode=optimized -Zemit-thin-lto=no
diff --git a/tests/run-make-fulldeps/issue-84395-lto-embed-bitcode/test.rs b/tests/run-make/issue-84395-lto-embed-bitcode/test.rs
index 47ad8c63411..47ad8c63411 100644
--- a/tests/run-make-fulldeps/issue-84395-lto-embed-bitcode/test.rs
+++ b/tests/run-make/issue-84395-lto-embed-bitcode/test.rs
diff --git a/tests/run-make/issue-85019-moved-src-dir/Makefile b/tests/run-make/issue-85019-moved-src-dir/Makefile
index 3606d4fdf57..dec289058f9 100644
--- a/tests/run-make/issue-85019-moved-src-dir/Makefile
+++ b/tests/run-make/issue-85019-moved-src-dir/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 INCR=$(TMPDIR)/incr
 FIRST_SRC=$(TMPDIR)/first_src
diff --git a/tests/run-make/issue-85401-static-mir/Makefile b/tests/run-make/issue-85401-static-mir/Makefile
index 99590166bca..47a36b6e453 100644
--- a/tests/run-make/issue-85401-static-mir/Makefile
+++ b/tests/run-make/issue-85401-static-mir/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # Regression test for issue #85401
 # Verify that we do not ICE when trying to access MIR for statics,
diff --git a/tests/run-make/issue-85441/Makefile b/tests/run-make/issue-85441/Makefile
index f04b07d51fa..987d7f7d4a7 100644
--- a/tests/run-make/issue-85441/Makefile
+++ b/tests/run-make/issue-85441/Makefile
@@ -1,6 +1,6 @@
 # only-windows-msvc
 
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # Tests that WS2_32.dll is not unnecessarily linked, see issue #85441
 
diff --git a/tests/run-make/issue-88756-default-output/Makefile b/tests/run-make/issue-88756-default-output/Makefile
index 275c35c2629..d1c3d0fe082 100644
--- a/tests/run-make/issue-88756-default-output/Makefile
+++ b/tests/run-make/issue-88756-default-output/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 all:
 	$(BARE_RUSTDOC) 2>&1 | sed -E 's@/nightly/|/beta/|/stable/|/1\.[0-9]+\.[0-9]+/@/$$CHANNEL/@g' | diff - output-default.stdout
diff --git a/tests/run-make/issue-96498/Makefile b/tests/run-make/issue-96498/Makefile
index ce2b1b1ff7c..efdd328c671 100644
--- a/tests/run-make/issue-96498/Makefile
+++ b/tests/run-make/issue-96498/Makefile
@@ -1,7 +1,7 @@
 # only-windows
 # needs-rust-lld
 
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # Ensure that LLD can link
 all:
diff --git a/tests/run-make-fulldeps/issue-97463-abi-param-passing/Makefile b/tests/run-make/issue-97463-abi-param-passing/Makefile
index db1b53e152e..7ce7aaeec57 100644
--- a/tests/run-make-fulldeps/issue-97463-abi-param-passing/Makefile
+++ b/tests/run-make/issue-97463-abi-param-passing/Makefile
@@ -1,4 +1,5 @@
--include ../tools.mk
+# ignore-cross-compile
+include ../tools.mk
 
 # ignore-msvc
 
diff --git a/tests/run-make-fulldeps/issue-97463-abi-param-passing/bad.c b/tests/run-make/issue-97463-abi-param-passing/bad.c
index 013314ab20d..013314ab20d 100644
--- a/tests/run-make-fulldeps/issue-97463-abi-param-passing/bad.c
+++ b/tests/run-make/issue-97463-abi-param-passing/bad.c
diff --git a/tests/run-make-fulldeps/issue-97463-abi-param-passing/param_passing.rs b/tests/run-make/issue-97463-abi-param-passing/param_passing.rs
index c11f3cc72bd..c11f3cc72bd 100644
--- a/tests/run-make-fulldeps/issue-97463-abi-param-passing/param_passing.rs
+++ b/tests/run-make/issue-97463-abi-param-passing/param_passing.rs
diff --git a/tests/run-make-fulldeps/issue64319/Makefile b/tests/run-make/issue64319/Makefile
index ee0d177abc9..56346cbcc15 100644
--- a/tests/run-make-fulldeps/issue64319/Makefile
+++ b/tests/run-make/issue64319/Makefile
@@ -1,4 +1,5 @@
-include ../../run-make-fulldeps/tools.mk
+# ignore-cross-compile
+include ../tools.mk
 
 # Different optimization levels imply different values for `-Zshare-generics`,
 # so try out a whole bunch of combinations to make sure everything is compatible
diff --git a/tests/run-make-fulldeps/issue64319/bar.rs b/tests/run-make/issue64319/bar.rs
index 3895c0b6cdb..3895c0b6cdb 100644
--- a/tests/run-make-fulldeps/issue64319/bar.rs
+++ b/tests/run-make/issue64319/bar.rs
diff --git a/tests/run-make-fulldeps/issue64319/foo.rs b/tests/run-make/issue64319/foo.rs
index c54a238e9ad..c54a238e9ad 100644
--- a/tests/run-make-fulldeps/issue64319/foo.rs
+++ b/tests/run-make/issue64319/foo.rs
diff --git a/tests/run-make/jobserver-error/Makefile b/tests/run-make/jobserver-error/Makefile
index 3b9104fc354..39946ae5edb 100644
--- a/tests/run-make/jobserver-error/Makefile
+++ b/tests/run-make/jobserver-error/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # only-linux
 
diff --git a/tests/run-make-fulldeps/libs-through-symlinks/Makefile b/tests/run-make/libs-through-symlinks/Makefile
index 45deaecb840..592eae663a4 100644
--- a/tests/run-make-fulldeps/libs-through-symlinks/Makefile
+++ b/tests/run-make/libs-through-symlinks/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # ignore-windows
diff --git a/tests/run-make-fulldeps/libs-through-symlinks/bar.rs b/tests/run-make/libs-through-symlinks/bar.rs
index bb7b36c496e..bb7b36c496e 100644
--- a/tests/run-make-fulldeps/libs-through-symlinks/bar.rs
+++ b/tests/run-make/libs-through-symlinks/bar.rs
diff --git a/tests/run-make-fulldeps/libs-through-symlinks/foo.rs b/tests/run-make/libs-through-symlinks/foo.rs
index 8e3df2c6d4e..8e3df2c6d4e 100644
--- a/tests/run-make-fulldeps/libs-through-symlinks/foo.rs
+++ b/tests/run-make/libs-through-symlinks/foo.rs
diff --git a/tests/run-make-fulldeps/libtest-json/Makefile b/tests/run-make/libtest-json/Makefile
index 37b6cb9e2d4..417637cf072 100644
--- a/tests/run-make-fulldeps/libtest-json/Makefile
+++ b/tests/run-make/libtest-json/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # Test expected libtest's JSON output
diff --git a/tests/run-make-fulldeps/libtest-json/f.rs b/tests/run-make/libtest-json/f.rs
index edfe25086ae..edfe25086ae 100644
--- a/tests/run-make-fulldeps/libtest-json/f.rs
+++ b/tests/run-make/libtest-json/f.rs
diff --git a/tests/run-make-fulldeps/libtest-json/output-default.json b/tests/run-make/libtest-json/output-default.json
index ad22b66eda6..ad22b66eda6 100644
--- a/tests/run-make-fulldeps/libtest-json/output-default.json
+++ b/tests/run-make/libtest-json/output-default.json
diff --git a/tests/run-make-fulldeps/libtest-json/output-stdout-success.json b/tests/run-make/libtest-json/output-stdout-success.json
index ec98172eb1c..ec98172eb1c 100644
--- a/tests/run-make-fulldeps/libtest-json/output-stdout-success.json
+++ b/tests/run-make/libtest-json/output-stdout-success.json
diff --git a/tests/run-make-fulldeps/libtest-json/validate_json.py b/tests/run-make/libtest-json/validate_json.py
index 657f732f2bf..657f732f2bf 100755
--- a/tests/run-make-fulldeps/libtest-json/validate_json.py
+++ b/tests/run-make/libtest-json/validate_json.py
diff --git a/tests/run-make/libtest-thread-limit/Makefile b/tests/run-make/libtest-thread-limit/Makefile
index d43a89e60ca..9496fa30159 100644
--- a/tests/run-make/libtest-thread-limit/Makefile
+++ b/tests/run-make/libtest-thread-limit/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # only-linux
 
diff --git a/tests/run-make-fulldeps/link-arg/Makefile b/tests/run-make/link-arg/Makefile
index 103527c3e14..103527c3e14 100644
--- a/tests/run-make-fulldeps/link-arg/Makefile
+++ b/tests/run-make/link-arg/Makefile
diff --git a/tests/run-make-fulldeps/link-arg/empty.rs b/tests/run-make/link-arg/empty.rs
index 45590d86ba6..45590d86ba6 100644
--- a/tests/run-make-fulldeps/link-arg/empty.rs
+++ b/tests/run-make/link-arg/empty.rs
diff --git a/tests/run-make-fulldeps/link-args-order/Makefile b/tests/run-make/link-args-order/Makefile
index c562cc1b396..c562cc1b396 100644
--- a/tests/run-make-fulldeps/link-args-order/Makefile
+++ b/tests/run-make/link-args-order/Makefile
diff --git a/tests/run-make-fulldeps/link-args-order/empty.rs b/tests/run-make/link-args-order/empty.rs
index f328e4d9d04..f328e4d9d04 100644
--- a/tests/run-make-fulldeps/link-args-order/empty.rs
+++ b/tests/run-make/link-args-order/empty.rs
diff --git a/tests/run-make-fulldeps/link-cfg/Makefile b/tests/run-make/link-cfg/Makefile
index 0b25ccded06..a4099701144 100644
--- a/tests/run-make-fulldeps/link-cfg/Makefile
+++ b/tests/run-make/link-cfg/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: $(call DYLIB,return1) $(call DYLIB,return2) $(call NATIVE_STATICLIB,return3)
diff --git a/tests/run-make-fulldeps/link-cfg/dep-with-staticlib.rs b/tests/run-make/link-cfg/dep-with-staticlib.rs
index 5ad66475d00..5ad66475d00 100644
--- a/tests/run-make-fulldeps/link-cfg/dep-with-staticlib.rs
+++ b/tests/run-make/link-cfg/dep-with-staticlib.rs
diff --git a/tests/run-make-fulldeps/link-cfg/dep.rs b/tests/run-make/link-cfg/dep.rs
index 40de77f05b3..40de77f05b3 100644
--- a/tests/run-make-fulldeps/link-cfg/dep.rs
+++ b/tests/run-make/link-cfg/dep.rs
diff --git a/tests/run-make-fulldeps/link-cfg/no-deps.rs b/tests/run-make/link-cfg/no-deps.rs
index ba5a8711a26..ba5a8711a26 100644
--- a/tests/run-make-fulldeps/link-cfg/no-deps.rs
+++ b/tests/run-make/link-cfg/no-deps.rs
diff --git a/tests/run-make-fulldeps/link-cfg/return1.c b/tests/run-make/link-cfg/return1.c
index 41c2809ade3..41c2809ade3 100644
--- a/tests/run-make-fulldeps/link-cfg/return1.c
+++ b/tests/run-make/link-cfg/return1.c
diff --git a/tests/run-make-fulldeps/link-cfg/return2.c b/tests/run-make/link-cfg/return2.c
index 622aeaa294c..622aeaa294c 100644
--- a/tests/run-make-fulldeps/link-cfg/return2.c
+++ b/tests/run-make/link-cfg/return2.c
diff --git a/tests/run-make-fulldeps/link-cfg/return3.c b/tests/run-make/link-cfg/return3.c
index f29dc60d5e8..f29dc60d5e8 100644
--- a/tests/run-make-fulldeps/link-cfg/return3.c
+++ b/tests/run-make/link-cfg/return3.c
diff --git a/tests/run-make-fulldeps/link-cfg/with-deps.rs b/tests/run-make/link-cfg/with-deps.rs
index 48b7828152e..48b7828152e 100644
--- a/tests/run-make-fulldeps/link-cfg/with-deps.rs
+++ b/tests/run-make/link-cfg/with-deps.rs
diff --git a/tests/run-make-fulldeps/link-cfg/with-staticlib-deps.rs b/tests/run-make/link-cfg/with-staticlib-deps.rs
index 23e5926a73c..23e5926a73c 100644
--- a/tests/run-make-fulldeps/link-cfg/with-staticlib-deps.rs
+++ b/tests/run-make/link-cfg/with-staticlib-deps.rs
diff --git a/tests/run-make-fulldeps/link-dedup/Makefile b/tests/run-make/link-dedup/Makefile
index eff18ab48ab..eff18ab48ab 100644
--- a/tests/run-make-fulldeps/link-dedup/Makefile
+++ b/tests/run-make/link-dedup/Makefile
diff --git a/tests/run-make-fulldeps/link-dedup/depa.rs b/tests/run-make/link-dedup/depa.rs
index 19178c5bd49..19178c5bd49 100644
--- a/tests/run-make-fulldeps/link-dedup/depa.rs
+++ b/tests/run-make/link-dedup/depa.rs
diff --git a/tests/run-make-fulldeps/link-dedup/depb.rs b/tests/run-make/link-dedup/depb.rs
index b1be21fe005..b1be21fe005 100644
--- a/tests/run-make-fulldeps/link-dedup/depb.rs
+++ b/tests/run-make/link-dedup/depb.rs
diff --git a/tests/run-make-fulldeps/link-dedup/depc.rs b/tests/run-make/link-dedup/depc.rs
index 8dcb3dee5a2..8dcb3dee5a2 100644
--- a/tests/run-make-fulldeps/link-dedup/depc.rs
+++ b/tests/run-make/link-dedup/depc.rs
diff --git a/tests/run-make-fulldeps/link-dedup/empty.rs b/tests/run-make/link-dedup/empty.rs
index e00ae18f4af..e00ae18f4af 100644
--- a/tests/run-make-fulldeps/link-dedup/empty.rs
+++ b/tests/run-make/link-dedup/empty.rs
diff --git a/tests/run-make-fulldeps/link-path-order/Makefile b/tests/run-make/link-path-order/Makefile
index ed7c299e61a..a3831a63ac7 100644
--- a/tests/run-make-fulldeps/link-path-order/Makefile
+++ b/tests/run-make/link-path-order/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # Verifies that the -L arguments given to the linker is in the same order
diff --git a/tests/run-make-fulldeps/link-path-order/correct.c b/tests/run-make/link-path-order/correct.c
index 3064af952f8..3064af952f8 100644
--- a/tests/run-make-fulldeps/link-path-order/correct.c
+++ b/tests/run-make/link-path-order/correct.c
diff --git a/tests/run-make-fulldeps/link-path-order/main.rs b/tests/run-make/link-path-order/main.rs
index 8024e343d19..8024e343d19 100644
--- a/tests/run-make-fulldeps/link-path-order/main.rs
+++ b/tests/run-make/link-path-order/main.rs
diff --git a/tests/run-make-fulldeps/link-path-order/wrong.c b/tests/run-make/link-path-order/wrong.c
index 64275b3ad6b..64275b3ad6b 100644
--- a/tests/run-make-fulldeps/link-path-order/wrong.c
+++ b/tests/run-make/link-path-order/wrong.c
diff --git a/tests/run-make-fulldeps/linkage-attr-on-static/Makefile b/tests/run-make/linkage-attr-on-static/Makefile
index 7cc54e40a3a..ef50a7ef9f1 100644
--- a/tests/run-make-fulldeps/linkage-attr-on-static/Makefile
+++ b/tests/run-make/linkage-attr-on-static/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: $(call NATIVE_STATICLIB,foo)
diff --git a/tests/run-make-fulldeps/linkage-attr-on-static/bar.rs b/tests/run-make/linkage-attr-on-static/bar.rs
index 68607cbb657..68607cbb657 100644
--- a/tests/run-make-fulldeps/linkage-attr-on-static/bar.rs
+++ b/tests/run-make/linkage-attr-on-static/bar.rs
diff --git a/tests/run-make-fulldeps/linkage-attr-on-static/foo.c b/tests/run-make/linkage-attr-on-static/foo.c
index 78a6934f57f..78a6934f57f 100644
--- a/tests/run-make-fulldeps/linkage-attr-on-static/foo.c
+++ b/tests/run-make/linkage-attr-on-static/foo.c
diff --git a/tests/run-make/llvm-outputs/Makefile b/tests/run-make/llvm-outputs/Makefile
index a3f25eba0b2..cccf1dd66fb 100644
--- a/tests/run-make/llvm-outputs/Makefile
+++ b/tests/run-make/llvm-outputs/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 all:
 	echo 'fn main() {}' | $(BARE_RUSTC) - --out-dir=$(TMPDIR)/random_directory_that_does_not_exist_ir/ --emit=llvm-ir
diff --git a/tests/run-make-fulldeps/long-linker-command-lines-cmd-exe/Makefile b/tests/run-make/long-linker-command-lines-cmd-exe/Makefile
index a38f4fe5dc5..e43aab7f8e0 100644
--- a/tests/run-make-fulldeps/long-linker-command-lines-cmd-exe/Makefile
+++ b/tests/run-make/long-linker-command-lines-cmd-exe/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/long-linker-command-lines-cmd-exe/foo.bat b/tests/run-make/long-linker-command-lines-cmd-exe/foo.bat
index a9350f12bbb..a9350f12bbb 100644
--- a/tests/run-make-fulldeps/long-linker-command-lines-cmd-exe/foo.bat
+++ b/tests/run-make/long-linker-command-lines-cmd-exe/foo.bat
diff --git a/tests/run-make-fulldeps/long-linker-command-lines-cmd-exe/foo.rs b/tests/run-make/long-linker-command-lines-cmd-exe/foo.rs
index 74d7b9b07f6..74d7b9b07f6 100644
--- a/tests/run-make-fulldeps/long-linker-command-lines-cmd-exe/foo.rs
+++ b/tests/run-make/long-linker-command-lines-cmd-exe/foo.rs
diff --git a/tests/run-make-fulldeps/long-linker-command-lines/Makefile b/tests/run-make/long-linker-command-lines/Makefile
index 00199ca970d..f864ea74f4a 100644
--- a/tests/run-make-fulldeps/long-linker-command-lines/Makefile
+++ b/tests/run-make/long-linker-command-lines/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/long-linker-command-lines/foo.rs b/tests/run-make/long-linker-command-lines/foo.rs
index db238c0cf1a..db238c0cf1a 100644
--- a/tests/run-make-fulldeps/long-linker-command-lines/foo.rs
+++ b/tests/run-make/long-linker-command-lines/foo.rs
diff --git a/tests/run-make-fulldeps/longjmp-across-rust/Makefile b/tests/run-make/longjmp-across-rust/Makefile
index 848638d82dd..5fd2d4f855f 100644
--- a/tests/run-make-fulldeps/longjmp-across-rust/Makefile
+++ b/tests/run-make/longjmp-across-rust/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: $(call NATIVE_STATICLIB,foo)
diff --git a/tests/run-make-fulldeps/longjmp-across-rust/foo.c b/tests/run-make/longjmp-across-rust/foo.c
index bd71cc4d777..bd71cc4d777 100644
--- a/tests/run-make-fulldeps/longjmp-across-rust/foo.c
+++ b/tests/run-make/longjmp-across-rust/foo.c
diff --git a/tests/run-make-fulldeps/longjmp-across-rust/main.rs b/tests/run-make/longjmp-across-rust/main.rs
index cc1d5b126dd..cc1d5b126dd 100644
--- a/tests/run-make-fulldeps/longjmp-across-rust/main.rs
+++ b/tests/run-make/longjmp-across-rust/main.rs
diff --git a/tests/run-make-fulldeps/ls-metadata/Makefile b/tests/run-make/ls-metadata/Makefile
index e0f916a248e..123dd64e15c 100644
--- a/tests/run-make-fulldeps/ls-metadata/Makefile
+++ b/tests/run-make/ls-metadata/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/ls-metadata/foo.rs b/tests/run-make/ls-metadata/foo.rs
index f328e4d9d04..f328e4d9d04 100644
--- a/tests/run-make-fulldeps/ls-metadata/foo.rs
+++ b/tests/run-make/ls-metadata/foo.rs
diff --git a/tests/run-make-fulldeps/lto-dylib-dep/Makefile b/tests/run-make/lto-dylib-dep/Makefile
index 41487b23c74..a9344597d08 100644
--- a/tests/run-make-fulldeps/lto-dylib-dep/Makefile
+++ b/tests/run-make/lto-dylib-dep/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # Test that we don't run into an assertion when using a Rust dylib dependency
diff --git a/tests/run-make-fulldeps/lto-dylib-dep/a_dylib.rs b/tests/run-make/lto-dylib-dep/a_dylib.rs
index e63457e6eb9..e63457e6eb9 100644
--- a/tests/run-make-fulldeps/lto-dylib-dep/a_dylib.rs
+++ b/tests/run-make/lto-dylib-dep/a_dylib.rs
diff --git a/tests/run-make-fulldeps/lto-dylib-dep/main.rs b/tests/run-make/lto-dylib-dep/main.rs
index 4fb3c4730b2..4fb3c4730b2 100644
--- a/tests/run-make-fulldeps/lto-dylib-dep/main.rs
+++ b/tests/run-make/lto-dylib-dep/main.rs
diff --git a/tests/run-make-fulldeps/lto-empty/Makefile b/tests/run-make/lto-empty/Makefile
index b4345ba1883..1b795c4b738 100644
--- a/tests/run-make-fulldeps/lto-empty/Makefile
+++ b/tests/run-make/lto-empty/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: cdylib-fat cdylib-thin
diff --git a/tests/run-make-fulldeps/lto-empty/lib.rs b/tests/run-make/lto-empty/lib.rs
index e3663c79078..e3663c79078 100644
--- a/tests/run-make-fulldeps/lto-empty/lib.rs
+++ b/tests/run-make/lto-empty/lib.rs
diff --git a/tests/run-make-fulldeps/lto-no-link-whole-rlib/Makefile b/tests/run-make/lto-no-link-whole-rlib/Makefile
index e576ee37cf7..3e82322e72d 100644
--- a/tests/run-make-fulldeps/lto-no-link-whole-rlib/Makefile
+++ b/tests/run-make/lto-no-link-whole-rlib/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: $(call NATIVE_STATICLIB,foo) $(call NATIVE_STATICLIB,bar)
diff --git a/tests/run-make-fulldeps/lto-no-link-whole-rlib/bar.c b/tests/run-make/lto-no-link-whole-rlib/bar.c
index b2501193029..b2501193029 100644
--- a/tests/run-make-fulldeps/lto-no-link-whole-rlib/bar.c
+++ b/tests/run-make/lto-no-link-whole-rlib/bar.c
diff --git a/tests/run-make-fulldeps/lto-no-link-whole-rlib/foo.c b/tests/run-make/lto-no-link-whole-rlib/foo.c
index 75010458ece..75010458ece 100644
--- a/tests/run-make-fulldeps/lto-no-link-whole-rlib/foo.c
+++ b/tests/run-make/lto-no-link-whole-rlib/foo.c
diff --git a/tests/run-make-fulldeps/lto-no-link-whole-rlib/lib1.rs b/tests/run-make/lto-no-link-whole-rlib/lib1.rs
index f70bb338223..f70bb338223 100644
--- a/tests/run-make-fulldeps/lto-no-link-whole-rlib/lib1.rs
+++ b/tests/run-make/lto-no-link-whole-rlib/lib1.rs
diff --git a/tests/run-make-fulldeps/lto-no-link-whole-rlib/lib2.rs b/tests/run-make/lto-no-link-whole-rlib/lib2.rs
index 2dec2a2718e..2dec2a2718e 100644
--- a/tests/run-make-fulldeps/lto-no-link-whole-rlib/lib2.rs
+++ b/tests/run-make/lto-no-link-whole-rlib/lib2.rs
diff --git a/tests/run-make-fulldeps/lto-no-link-whole-rlib/main.rs b/tests/run-make/lto-no-link-whole-rlib/main.rs
index 0c658808e6e..0c658808e6e 100644
--- a/tests/run-make-fulldeps/lto-no-link-whole-rlib/main.rs
+++ b/tests/run-make/lto-no-link-whole-rlib/main.rs
diff --git a/tests/run-make-fulldeps/lto-readonly-lib/Makefile b/tests/run-make/lto-readonly-lib/Makefile
index a20ecea88ea..11d944e3e3d 100644
--- a/tests/run-make-fulldeps/lto-readonly-lib/Makefile
+++ b/tests/run-make/lto-readonly-lib/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/lto-readonly-lib/lib.rs b/tests/run-make/lto-readonly-lib/lib.rs
index c1bfaa6cab5..c1bfaa6cab5 100644
--- a/tests/run-make-fulldeps/lto-readonly-lib/lib.rs
+++ b/tests/run-make/lto-readonly-lib/lib.rs
diff --git a/tests/run-make-fulldeps/lto-readonly-lib/main.rs b/tests/run-make/lto-readonly-lib/main.rs
index 69da798b3eb..69da798b3eb 100644
--- a/tests/run-make-fulldeps/lto-readonly-lib/main.rs
+++ b/tests/run-make/lto-readonly-lib/main.rs
diff --git a/tests/run-make-fulldeps/lto-smoke-c/Makefile b/tests/run-make/lto-smoke-c/Makefile
index 7c6ee3be849..f1ba3d95da2 100644
--- a/tests/run-make-fulldeps/lto-smoke-c/Makefile
+++ b/tests/run-make/lto-smoke-c/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # Apparently older versions of GCC segfault if -g is passed...
diff --git a/tests/run-make-fulldeps/lto-smoke-c/bar.c b/tests/run-make/lto-smoke-c/bar.c
index bb4036b06e1..bb4036b06e1 100644
--- a/tests/run-make-fulldeps/lto-smoke-c/bar.c
+++ b/tests/run-make/lto-smoke-c/bar.c
diff --git a/tests/run-make-fulldeps/lto-smoke-c/foo.rs b/tests/run-make/lto-smoke-c/foo.rs
index 2e59432cdb1..2e59432cdb1 100644
--- a/tests/run-make-fulldeps/lto-smoke-c/foo.rs
+++ b/tests/run-make/lto-smoke-c/foo.rs
diff --git a/tests/run-make-fulldeps/lto-smoke/Makefile b/tests/run-make/lto-smoke/Makefile
index 8bce708b44b..13a09fce734 100644
--- a/tests/run-make-fulldeps/lto-smoke/Makefile
+++ b/tests/run-make/lto-smoke/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: noparam bool_true bool_false thin fat
diff --git a/tests/run-make-fulldeps/lto-smoke/lib.rs b/tests/run-make/lto-smoke/lib.rs
index c1bfaa6cab5..c1bfaa6cab5 100644
--- a/tests/run-make-fulldeps/lto-smoke/lib.rs
+++ b/tests/run-make/lto-smoke/lib.rs
diff --git a/tests/run-make-fulldeps/lto-smoke/main.rs b/tests/run-make/lto-smoke/main.rs
index 69da798b3eb..69da798b3eb 100644
--- a/tests/run-make-fulldeps/lto-smoke/main.rs
+++ b/tests/run-make/lto-smoke/main.rs
diff --git a/tests/run-make/macos-deployment-target/Makefile b/tests/run-make/macos-deployment-target/Makefile
index 70fca043653..d0cf836bcdf 100644
--- a/tests/run-make/macos-deployment-target/Makefile
+++ b/tests/run-make/macos-deployment-target/Makefile
@@ -4,7 +4,7 @@
 # This is important since its a compatibility hazard. The linker will
 # generate load commands differently based on what minimum OS it can assume.
 
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 ifeq ($(strip $(shell uname -m)),arm64)
 	GREP_PATTERN = "minos 11.0"
diff --git a/tests/run-make/macos-fat-archive/Makefile b/tests/run-make/macos-fat-archive/Makefile
index cc99375db69..b6582c809e8 100644
--- a/tests/run-make/macos-fat-archive/Makefile
+++ b/tests/run-make/macos-fat-archive/Makefile
@@ -1,6 +1,6 @@
 # only-macos
 
--include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 "$(TMPDIR)"/libnative-library.a: native-library.c
 	$(CC) -arch arm64 -arch x86_64 native-library.c -c -o "$(TMPDIR)"/native-library.o
diff --git a/tests/run-make-fulldeps/manual-crate-name/Makefile b/tests/run-make/manual-crate-name/Makefile
index c00e20c7c57..c00e20c7c57 100644
--- a/tests/run-make-fulldeps/manual-crate-name/Makefile
+++ b/tests/run-make/manual-crate-name/Makefile
diff --git a/tests/run-make-fulldeps/manual-crate-name/bar.rs b/tests/run-make/manual-crate-name/bar.rs
index c1bfaa6cab5..c1bfaa6cab5 100644
--- a/tests/run-make-fulldeps/manual-crate-name/bar.rs
+++ b/tests/run-make/manual-crate-name/bar.rs
diff --git a/tests/run-make-fulldeps/manual-link/Makefile b/tests/run-make/manual-link/Makefile
index 401f6eb440a..8dbf0460fff 100644
--- a/tests/run-make-fulldeps/manual-link/Makefile
+++ b/tests/run-make/manual-link/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: $(TMPDIR)/libbar.a
diff --git a/tests/run-make-fulldeps/manual-link/bar.c b/tests/run-make/manual-link/bar.c
index e4259998678..e4259998678 100644
--- a/tests/run-make-fulldeps/manual-link/bar.c
+++ b/tests/run-make/manual-link/bar.c
diff --git a/tests/run-make-fulldeps/manual-link/foo.c b/tests/run-make/manual-link/foo.c
index e4259998678..e4259998678 100644
--- a/tests/run-make-fulldeps/manual-link/foo.c
+++ b/tests/run-make/manual-link/foo.c
diff --git a/tests/run-make-fulldeps/manual-link/foo.rs b/tests/run-make/manual-link/foo.rs
index c1f28236ffd..c1f28236ffd 100644
--- a/tests/run-make-fulldeps/manual-link/foo.rs
+++ b/tests/run-make/manual-link/foo.rs
diff --git a/tests/run-make-fulldeps/manual-link/main.rs b/tests/run-make/manual-link/main.rs
index fe35f1f8e2e..fe35f1f8e2e 100644
--- a/tests/run-make-fulldeps/manual-link/main.rs
+++ b/tests/run-make/manual-link/main.rs
diff --git a/tests/run-make-fulldeps/many-crates-but-no-match/Makefile b/tests/run-make/many-crates-but-no-match/Makefile
index ca0ab8e9e5f..ca0ab8e9e5f 100644
--- a/tests/run-make-fulldeps/many-crates-but-no-match/Makefile
+++ b/tests/run-make/many-crates-but-no-match/Makefile
diff --git a/tests/run-make-fulldeps/many-crates-but-no-match/crateA1.rs b/tests/run-make/many-crates-but-no-match/crateA1.rs
index 3fed5a38e2c..3fed5a38e2c 100644
--- a/tests/run-make-fulldeps/many-crates-but-no-match/crateA1.rs
+++ b/tests/run-make/many-crates-but-no-match/crateA1.rs
diff --git a/tests/run-make-fulldeps/many-crates-but-no-match/crateA2.rs b/tests/run-make/many-crates-but-no-match/crateA2.rs
index 8db07a015ff..8db07a015ff 100644
--- a/tests/run-make-fulldeps/many-crates-but-no-match/crateA2.rs
+++ b/tests/run-make/many-crates-but-no-match/crateA2.rs
diff --git a/tests/run-make-fulldeps/many-crates-but-no-match/crateA3.rs b/tests/run-make/many-crates-but-no-match/crateA3.rs
index a1e8e40a38c..a1e8e40a38c 100644
--- a/tests/run-make-fulldeps/many-crates-but-no-match/crateA3.rs
+++ b/tests/run-make/many-crates-but-no-match/crateA3.rs
diff --git a/tests/run-make-fulldeps/many-crates-but-no-match/crateB.rs b/tests/run-make/many-crates-but-no-match/crateB.rs
index 4ccd65d653e..4ccd65d653e 100644
--- a/tests/run-make-fulldeps/many-crates-but-no-match/crateB.rs
+++ b/tests/run-make/many-crates-but-no-match/crateB.rs
diff --git a/tests/run-make-fulldeps/many-crates-but-no-match/crateC.rs b/tests/run-make/many-crates-but-no-match/crateC.rs
index a8b817ec681..a8b817ec681 100644
--- a/tests/run-make-fulldeps/many-crates-but-no-match/crateC.rs
+++ b/tests/run-make/many-crates-but-no-match/crateC.rs
diff --git a/tests/run-make-fulldeps/metadata-flag-frobs-symbols/Makefile b/tests/run-make/metadata-flag-frobs-symbols/Makefile
index dc6b10f4e9d..53d7d065769 100644
--- a/tests/run-make-fulldeps/metadata-flag-frobs-symbols/Makefile
+++ b/tests/run-make/metadata-flag-frobs-symbols/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/metadata-flag-frobs-symbols/bar.rs b/tests/run-make/metadata-flag-frobs-symbols/bar.rs
index 1e6957a3694..1e6957a3694 100644
--- a/tests/run-make-fulldeps/metadata-flag-frobs-symbols/bar.rs
+++ b/tests/run-make/metadata-flag-frobs-symbols/bar.rs
diff --git a/tests/run-make-fulldeps/metadata-flag-frobs-symbols/foo.rs b/tests/run-make/metadata-flag-frobs-symbols/foo.rs
index 696aed2fa1d..696aed2fa1d 100644
--- a/tests/run-make-fulldeps/metadata-flag-frobs-symbols/foo.rs
+++ b/tests/run-make/metadata-flag-frobs-symbols/foo.rs
diff --git a/tests/run-make-fulldeps/min-global-align/Makefile b/tests/run-make/min-global-align/Makefile
index 82f38749e00..82f38749e00 100644
--- a/tests/run-make-fulldeps/min-global-align/Makefile
+++ b/tests/run-make/min-global-align/Makefile
diff --git a/tests/run-make-fulldeps/min-global-align/min_global_align.rs b/tests/run-make/min-global-align/min_global_align.rs
index 135792e9372..135792e9372 100644
--- a/tests/run-make-fulldeps/min-global-align/min_global_align.rs
+++ b/tests/run-make/min-global-align/min_global_align.rs
diff --git a/tests/run-make-fulldeps/mingw-export-call-convention/Makefile b/tests/run-make/mingw-export-call-convention/Makefile
index 4a60059cc54..4a60059cc54 100644
--- a/tests/run-make-fulldeps/mingw-export-call-convention/Makefile
+++ b/tests/run-make/mingw-export-call-convention/Makefile
diff --git a/tests/run-make-fulldeps/mingw-export-call-convention/foo.rs b/tests/run-make/mingw-export-call-convention/foo.rs
index 1fec00311ef..1fec00311ef 100644
--- a/tests/run-make-fulldeps/mingw-export-call-convention/foo.rs
+++ b/tests/run-make/mingw-export-call-convention/foo.rs
diff --git a/tests/run-make-fulldeps/mismatching-target-triples/Makefile b/tests/run-make/mismatching-target-triples/Makefile
index 409388e0414..409388e0414 100644
--- a/tests/run-make-fulldeps/mismatching-target-triples/Makefile
+++ b/tests/run-make/mismatching-target-triples/Makefile
diff --git a/tests/run-make-fulldeps/mismatching-target-triples/bar.rs b/tests/run-make/mismatching-target-triples/bar.rs
index b2c2fc1c410..b2c2fc1c410 100644
--- a/tests/run-make-fulldeps/mismatching-target-triples/bar.rs
+++ b/tests/run-make/mismatching-target-triples/bar.rs
diff --git a/tests/run-make-fulldeps/mismatching-target-triples/foo.rs b/tests/run-make/mismatching-target-triples/foo.rs
index 6fa05491448..6fa05491448 100644
--- a/tests/run-make-fulldeps/mismatching-target-triples/foo.rs
+++ b/tests/run-make/mismatching-target-triples/foo.rs
diff --git a/tests/run-make-fulldeps/missing-crate-dependency/Makefile b/tests/run-make/missing-crate-dependency/Makefile
index 7c271ab8a90..7c271ab8a90 100644
--- a/tests/run-make-fulldeps/missing-crate-dependency/Makefile
+++ b/tests/run-make/missing-crate-dependency/Makefile
diff --git a/tests/run-make-fulldeps/missing-crate-dependency/crateA.rs b/tests/run-make/missing-crate-dependency/crateA.rs
index 31433cb60b8..31433cb60b8 100644
--- a/tests/run-make-fulldeps/missing-crate-dependency/crateA.rs
+++ b/tests/run-make/missing-crate-dependency/crateA.rs
diff --git a/tests/run-make-fulldeps/missing-crate-dependency/crateB.rs b/tests/run-make/missing-crate-dependency/crateB.rs
index 4ccd65d653e..4ccd65d653e 100644
--- a/tests/run-make-fulldeps/missing-crate-dependency/crateB.rs
+++ b/tests/run-make/missing-crate-dependency/crateB.rs
diff --git a/tests/run-make-fulldeps/missing-crate-dependency/crateC.rs b/tests/run-make/missing-crate-dependency/crateC.rs
index a8b817ec681..a8b817ec681 100644
--- a/tests/run-make-fulldeps/missing-crate-dependency/crateC.rs
+++ b/tests/run-make/missing-crate-dependency/crateC.rs
diff --git a/tests/run-make-fulldeps/mixing-deps/Makefile b/tests/run-make/mixing-deps/Makefile
index 956e704ee16..c2a5a2a0abb 100644
--- a/tests/run-make-fulldeps/mixing-deps/Makefile
+++ b/tests/run-make/mixing-deps/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/mixing-deps/both.rs b/tests/run-make/mixing-deps/both.rs
index 6a58187633f..6a58187633f 100644
--- a/tests/run-make-fulldeps/mixing-deps/both.rs
+++ b/tests/run-make/mixing-deps/both.rs
diff --git a/tests/run-make-fulldeps/mixing-deps/dylib.rs b/tests/run-make/mixing-deps/dylib.rs
index 88976d5b663..88976d5b663 100644
--- a/tests/run-make-fulldeps/mixing-deps/dylib.rs
+++ b/tests/run-make/mixing-deps/dylib.rs
diff --git a/tests/run-make-fulldeps/mixing-deps/prog.rs b/tests/run-make/mixing-deps/prog.rs
index 188981dc1a3..188981dc1a3 100644
--- a/tests/run-make-fulldeps/mixing-deps/prog.rs
+++ b/tests/run-make/mixing-deps/prog.rs
diff --git a/tests/run-make-fulldeps/mixing-formats/Makefile b/tests/run-make/mixing-formats/Makefile
index b27e54257f9..d01978a1599 100644
--- a/tests/run-make-fulldeps/mixing-formats/Makefile
+++ b/tests/run-make/mixing-formats/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # Testing various mixings of rlibs and dylibs. Makes sure that it's possible to
diff --git a/tests/run-make-fulldeps/mixing-formats/bar1.rs b/tests/run-make/mixing-formats/bar1.rs
index 49af74e1b74..49af74e1b74 100644
--- a/tests/run-make-fulldeps/mixing-formats/bar1.rs
+++ b/tests/run-make/mixing-formats/bar1.rs
diff --git a/tests/run-make-fulldeps/mixing-formats/bar2.rs b/tests/run-make/mixing-formats/bar2.rs
index 49af74e1b74..49af74e1b74 100644
--- a/tests/run-make-fulldeps/mixing-formats/bar2.rs
+++ b/tests/run-make/mixing-formats/bar2.rs
diff --git a/tests/run-make-fulldeps/mixing-formats/baz.rs b/tests/run-make/mixing-formats/baz.rs
index 99a73159ea4..99a73159ea4 100644
--- a/tests/run-make-fulldeps/mixing-formats/baz.rs
+++ b/tests/run-make/mixing-formats/baz.rs
diff --git a/tests/run-make-fulldeps/mixing-formats/baz2.rs b/tests/run-make/mixing-formats/baz2.rs
index d0fab1e4cdf..d0fab1e4cdf 100644
--- a/tests/run-make-fulldeps/mixing-formats/baz2.rs
+++ b/tests/run-make/mixing-formats/baz2.rs
diff --git a/tests/run-make-fulldeps/mixing-formats/foo.rs b/tests/run-make/mixing-formats/foo.rs
index d11c69f812a..d11c69f812a 100644
--- a/tests/run-make-fulldeps/mixing-formats/foo.rs
+++ b/tests/run-make/mixing-formats/foo.rs
diff --git a/tests/run-make-fulldeps/mixing-libs/Makefile b/tests/run-make/mixing-libs/Makefile
index 39cc0708ca1..e8262b28401 100644
--- a/tests/run-make-fulldeps/mixing-libs/Makefile
+++ b/tests/run-make/mixing-libs/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/mixing-libs/dylib.rs b/tests/run-make/mixing-libs/dylib.rs
index 6856887501c..6856887501c 100644
--- a/tests/run-make-fulldeps/mixing-libs/dylib.rs
+++ b/tests/run-make/mixing-libs/dylib.rs
diff --git a/tests/run-make-fulldeps/mixing-libs/prog.rs b/tests/run-make/mixing-libs/prog.rs
index 14ce5c951a7..14ce5c951a7 100644
--- a/tests/run-make-fulldeps/mixing-libs/prog.rs
+++ b/tests/run-make/mixing-libs/prog.rs
diff --git a/tests/run-make-fulldeps/mixing-libs/rlib.rs b/tests/run-make/mixing-libs/rlib.rs
index 96dcd16bb93..96dcd16bb93 100644
--- a/tests/run-make-fulldeps/mixing-libs/rlib.rs
+++ b/tests/run-make/mixing-libs/rlib.rs
diff --git a/tests/run-make-fulldeps/msvc-opt-minsize/Makefile b/tests/run-make/msvc-opt-minsize/Makefile
index a5f019f244e..32e6e28018f 100644
--- a/tests/run-make-fulldeps/msvc-opt-minsize/Makefile
+++ b/tests/run-make/msvc-opt-minsize/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/msvc-opt-minsize/foo.rs b/tests/run-make/msvc-opt-minsize/foo.rs
index 3f5496c08ee..3f5496c08ee 100644
--- a/tests/run-make-fulldeps/msvc-opt-minsize/foo.rs
+++ b/tests/run-make/msvc-opt-minsize/foo.rs
diff --git a/tests/run-make-fulldeps/multiple-emits/Makefile b/tests/run-make/multiple-emits/Makefile
index d1f29764485..d1f29764485 100644
--- a/tests/run-make-fulldeps/multiple-emits/Makefile
+++ b/tests/run-make/multiple-emits/Makefile
diff --git a/tests/run-make-fulldeps/multiple-emits/foo.rs b/tests/run-make/multiple-emits/foo.rs
index f328e4d9d04..f328e4d9d04 100644
--- a/tests/run-make-fulldeps/multiple-emits/foo.rs
+++ b/tests/run-make/multiple-emits/foo.rs
diff --git a/tests/run-make/native-link-modifier-bundle/Makefile b/tests/run-make/native-link-modifier-bundle/Makefile
index e8a1121bfcd..527720922fe 100644
--- a/tests/run-make/native-link-modifier-bundle/Makefile
+++ b/tests/run-make/native-link-modifier-bundle/Makefile
@@ -1,7 +1,7 @@
 # ignore-cross-compile
 # ignore-windows-msvc
 
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # We're using the llvm-nm instead of the system nm to ensure it is compatible
 # with the LLVM bitcode generated by rustc.
diff --git a/tests/run-make/native-link-modifier-verbatim-linker/Makefile b/tests/run-make/native-link-modifier-verbatim-linker/Makefile
index 666e4084ce2..256dc2d0664 100644
--- a/tests/run-make/native-link-modifier-verbatim-linker/Makefile
+++ b/tests/run-make/native-link-modifier-verbatim-linker/Makefile
@@ -1,7 +1,7 @@
 # ignore-cross-compile
 # ignore-macos
 
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 all:
 	# Verbatim allows specify precise name.
diff --git a/tests/run-make/native-link-modifier-verbatim-rustc/Makefile b/tests/run-make/native-link-modifier-verbatim-rustc/Makefile
index 6f01f37804a..dfd6ec50fc0 100644
--- a/tests/run-make/native-link-modifier-verbatim-rustc/Makefile
+++ b/tests/run-make/native-link-modifier-verbatim-rustc/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 all:
 	# Verbatim allows specify precise name.
diff --git a/tests/run-make/native-link-modifier-whole-archive/Makefile b/tests/run-make/native-link-modifier-whole-archive/Makefile
index f26bd864ced..5eb7a416f91 100644
--- a/tests/run-make/native-link-modifier-whole-archive/Makefile
+++ b/tests/run-make/native-link-modifier-whole-archive/Makefile
@@ -8,7 +8,7 @@
 # that code would never make it into the final executable and we'd thus be missing some
 # of the output.
 
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 all: $(TMPDIR)/$(call BIN,directly_linked) \
      $(TMPDIR)/$(call BIN,directly_linked_test_plus_whole_archive) \
diff --git a/tests/run-make-fulldeps/no-builtins-lto/Makefile b/tests/run-make/no-builtins-lto/Makefile
index c8f05d9918b..c8f05d9918b 100644
--- a/tests/run-make-fulldeps/no-builtins-lto/Makefile
+++ b/tests/run-make/no-builtins-lto/Makefile
diff --git a/tests/run-make-fulldeps/no-builtins-lto/main.rs b/tests/run-make/no-builtins-lto/main.rs
index 890c999c8cc..890c999c8cc 100644
--- a/tests/run-make-fulldeps/no-builtins-lto/main.rs
+++ b/tests/run-make/no-builtins-lto/main.rs
diff --git a/tests/run-make-fulldeps/no-builtins-lto/no_builtins.rs b/tests/run-make/no-builtins-lto/no_builtins.rs
index 5d001031a57..5d001031a57 100644
--- a/tests/run-make-fulldeps/no-builtins-lto/no_builtins.rs
+++ b/tests/run-make/no-builtins-lto/no_builtins.rs
diff --git a/tests/run-make-fulldeps/no-duplicate-libs/Makefile b/tests/run-make/no-duplicate-libs/Makefile
index b05aff7826e..4be8c026294 100644
--- a/tests/run-make-fulldeps/no-duplicate-libs/Makefile
+++ b/tests/run-make/no-duplicate-libs/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 ifdef IS_MSVC
diff --git a/tests/run-make-fulldeps/no-duplicate-libs/bar.c b/tests/run-make/no-duplicate-libs/bar.c
index e369526572d..e369526572d 100644
--- a/tests/run-make-fulldeps/no-duplicate-libs/bar.c
+++ b/tests/run-make/no-duplicate-libs/bar.c
diff --git a/tests/run-make-fulldeps/no-duplicate-libs/foo.c b/tests/run-make/no-duplicate-libs/foo.c
index 85e6cd8c390..85e6cd8c390 100644
--- a/tests/run-make-fulldeps/no-duplicate-libs/foo.c
+++ b/tests/run-make/no-duplicate-libs/foo.c
diff --git a/tests/run-make-fulldeps/no-duplicate-libs/main.rs b/tests/run-make/no-duplicate-libs/main.rs
index b25ef35ada6..b25ef35ada6 100644
--- a/tests/run-make-fulldeps/no-duplicate-libs/main.rs
+++ b/tests/run-make/no-duplicate-libs/main.rs
diff --git a/tests/run-make/no-input-file/Makefile b/tests/run-make/no-input-file/Makefile
index 2f02159229d..a754573a524 100644
--- a/tests/run-make/no-input-file/Makefile
+++ b/tests/run-make/no-input-file/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 all:
 	$(RUSTC) --print crate-name 2>&1 | diff - no-input-file.stderr
diff --git a/tests/run-make-fulldeps/no-intermediate-extras/Makefile b/tests/run-make/no-intermediate-extras/Makefile
index 4116aac1b8f..83b5cedcf2a 100644
--- a/tests/run-make-fulldeps/no-intermediate-extras/Makefile
+++ b/tests/run-make/no-intermediate-extras/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 # Regression test for issue #10973
 
 include ../tools.mk
diff --git a/tests/run-make-fulldeps/no-intermediate-extras/foo.rs b/tests/run-make/no-intermediate-extras/foo.rs
index d11c69f812a..d11c69f812a 100644
--- a/tests/run-make-fulldeps/no-intermediate-extras/foo.rs
+++ b/tests/run-make/no-intermediate-extras/foo.rs
diff --git a/tests/run-make-fulldeps/obey-crate-type-flag/Makefile b/tests/run-make/obey-crate-type-flag/Makefile
index effcfc94cc5..ecbb2e620ed 100644
--- a/tests/run-make-fulldeps/obey-crate-type-flag/Makefile
+++ b/tests/run-make/obey-crate-type-flag/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # check that rustc builds all crate_type attributes
diff --git a/tests/run-make-fulldeps/obey-crate-type-flag/test.rs b/tests/run-make/obey-crate-type-flag/test.rs
index 8a768f9de90..8a768f9de90 100644
--- a/tests/run-make-fulldeps/obey-crate-type-flag/test.rs
+++ b/tests/run-make/obey-crate-type-flag/test.rs
diff --git a/tests/run-make-fulldeps/output-filename-conflicts-with-directory/Makefile b/tests/run-make/output-filename-conflicts-with-directory/Makefile
index 45221356cd9..45221356cd9 100644
--- a/tests/run-make-fulldeps/output-filename-conflicts-with-directory/Makefile
+++ b/tests/run-make/output-filename-conflicts-with-directory/Makefile
diff --git a/tests/run-make-fulldeps/output-filename-conflicts-with-directory/foo.rs b/tests/run-make/output-filename-conflicts-with-directory/foo.rs
index f328e4d9d04..f328e4d9d04 100644
--- a/tests/run-make-fulldeps/output-filename-conflicts-with-directory/foo.rs
+++ b/tests/run-make/output-filename-conflicts-with-directory/foo.rs
diff --git a/tests/run-make-fulldeps/output-filename-overwrites-input/Makefile b/tests/run-make/output-filename-overwrites-input/Makefile
index 33069c06f5a..605b86b253e 100644
--- a/tests/run-make-fulldeps/output-filename-overwrites-input/Makefile
+++ b/tests/run-make/output-filename-overwrites-input/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/output-filename-overwrites-input/bar.rs b/tests/run-make/output-filename-overwrites-input/bar.rs
index 83be6e807e0..83be6e807e0 100644
--- a/tests/run-make-fulldeps/output-filename-overwrites-input/bar.rs
+++ b/tests/run-make/output-filename-overwrites-input/bar.rs
diff --git a/tests/run-make-fulldeps/output-filename-overwrites-input/foo.rs b/tests/run-make/output-filename-overwrites-input/foo.rs
index f328e4d9d04..f328e4d9d04 100644
--- a/tests/run-make-fulldeps/output-filename-overwrites-input/foo.rs
+++ b/tests/run-make/output-filename-overwrites-input/foo.rs
diff --git a/tests/run-make-fulldeps/output-type-permutations/Makefile b/tests/run-make/output-type-permutations/Makefile
index 791606c643b..035033b9fdd 100644
--- a/tests/run-make-fulldeps/output-type-permutations/Makefile
+++ b/tests/run-make/output-type-permutations/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/output-type-permutations/foo.rs b/tests/run-make/output-type-permutations/foo.rs
index f0a2cc6ad75..f0a2cc6ad75 100644
--- a/tests/run-make-fulldeps/output-type-permutations/foo.rs
+++ b/tests/run-make/output-type-permutations/foo.rs
diff --git a/tests/run-make-fulldeps/output-with-hyphens/Makefile b/tests/run-make/output-with-hyphens/Makefile
index 365fb6e591a..846c9a66a89 100644
--- a/tests/run-make-fulldeps/output-with-hyphens/Makefile
+++ b/tests/run-make/output-with-hyphens/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/output-with-hyphens/foo-bar.rs b/tests/run-make/output-with-hyphens/foo-bar.rs
index f328e4d9d04..f328e4d9d04 100644
--- a/tests/run-make-fulldeps/output-with-hyphens/foo-bar.rs
+++ b/tests/run-make/output-with-hyphens/foo-bar.rs
diff --git a/tests/run-make-fulldeps/override-aliased-flags/Makefile b/tests/run-make/override-aliased-flags/Makefile
index 186b8c7c85e..db1ff1ff981 100644
--- a/tests/run-make-fulldeps/override-aliased-flags/Makefile
+++ b/tests/run-make/override-aliased-flags/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # FIXME: it would be good to check that it's actually the rightmost flags
diff --git a/tests/run-make-fulldeps/override-aliased-flags/main.rs b/tests/run-make/override-aliased-flags/main.rs
index f328e4d9d04..f328e4d9d04 100644
--- a/tests/run-make-fulldeps/override-aliased-flags/main.rs
+++ b/tests/run-make/override-aliased-flags/main.rs
diff --git a/tests/run-make/overwrite-input/Makefile b/tests/run-make/overwrite-input/Makefile
index 03b03eb147d..c62b5aab190 100644
--- a/tests/run-make/overwrite-input/Makefile
+++ b/tests/run-make/overwrite-input/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 all:
 	$(RUSTC) main.rs -o main.rs 2> $(TMPDIR)/file.stderr || echo "failed successfully"
diff --git a/tests/run-make-fulldeps/panic-impl-transitive/Makefile b/tests/run-make/panic-impl-transitive/Makefile
index c3192efcb5a..9a271a22e10 100644
--- a/tests/run-make-fulldeps/panic-impl-transitive/Makefile
+++ b/tests/run-make/panic-impl-transitive/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # NOTE we use --emit=llvm-ir to avoid running the linker (linking will fail because there's no main
 # in this crate)
diff --git a/tests/run-make-fulldeps/panic-impl-transitive/panic-impl-consumer.rs b/tests/run-make/panic-impl-transitive/panic-impl-consumer.rs
index 82a98b12d04..82a98b12d04 100644
--- a/tests/run-make-fulldeps/panic-impl-transitive/panic-impl-consumer.rs
+++ b/tests/run-make/panic-impl-transitive/panic-impl-consumer.rs
diff --git a/tests/run-make-fulldeps/panic-impl-transitive/panic-impl-provider.rs b/tests/run-make/panic-impl-transitive/panic-impl-provider.rs
index f1b9873c83a..f1b9873c83a 100644
--- a/tests/run-make-fulldeps/panic-impl-transitive/panic-impl-provider.rs
+++ b/tests/run-make/panic-impl-transitive/panic-impl-provider.rs
diff --git a/tests/run-make/pass-linker-flags-from-dep/Makefile b/tests/run-make/pass-linker-flags-from-dep/Makefile
index b9426326aea..b57389bb7d4 100644
--- a/tests/run-make/pass-linker-flags-from-dep/Makefile
+++ b/tests/run-make/pass-linker-flags-from-dep/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 all:
 	# Build deps
diff --git a/tests/run-make/pass-linker-flags/Makefile b/tests/run-make/pass-linker-flags/Makefile
index a3efb8df6ac..6ddbcbb1b08 100644
--- a/tests/run-make/pass-linker-flags/Makefile
+++ b/tests/run-make/pass-linker-flags/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 all:
 	$(RUSTC) rs.rs -Z unstable-options -l static=l1 -l link-arg=a1 -l static=l2 -l link-arg=a2 -l dylib=d1 -l link-arg=a3 --print link-args | $(CGREP) -e 'l1.*a1.*l2.*a2.*d1.*a3'
diff --git a/tests/run-make-fulldeps/pass-non-c-like-enum-to-c/Makefile b/tests/run-make/pass-non-c-like-enum-to-c/Makefile
index 42d3c977f75..bd441d321bf 100644
--- a/tests/run-make-fulldeps/pass-non-c-like-enum-to-c/Makefile
+++ b/tests/run-make/pass-non-c-like-enum-to-c/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: $(call NATIVE_STATICLIB,test)
diff --git a/tests/run-make-fulldeps/pass-non-c-like-enum-to-c/nonclike.rs b/tests/run-make/pass-non-c-like-enum-to-c/nonclike.rs
index 517286a868d..517286a868d 100644
--- a/tests/run-make-fulldeps/pass-non-c-like-enum-to-c/nonclike.rs
+++ b/tests/run-make/pass-non-c-like-enum-to-c/nonclike.rs
diff --git a/tests/run-make-fulldeps/pass-non-c-like-enum-to-c/test.c b/tests/run-make/pass-non-c-like-enum-to-c/test.c
index 99511b2530f..99511b2530f 100644
--- a/tests/run-make-fulldeps/pass-non-c-like-enum-to-c/test.c
+++ b/tests/run-make/pass-non-c-like-enum-to-c/test.c
diff --git a/tests/run-make-fulldeps/pgo-branch-weights/Makefile b/tests/run-make/pgo-branch-weights/Makefile
index c60206a1f34..c60206a1f34 100644
--- a/tests/run-make-fulldeps/pgo-branch-weights/Makefile
+++ b/tests/run-make/pgo-branch-weights/Makefile
diff --git a/tests/run-make-fulldeps/pgo-branch-weights/filecheck-patterns.txt b/tests/run-make/pgo-branch-weights/filecheck-patterns.txt
index 70d5a645c14..70d5a645c14 100644
--- a/tests/run-make-fulldeps/pgo-branch-weights/filecheck-patterns.txt
+++ b/tests/run-make/pgo-branch-weights/filecheck-patterns.txt
diff --git a/tests/run-make-fulldeps/pgo-branch-weights/interesting.rs b/tests/run-make/pgo-branch-weights/interesting.rs
index a26d6fd69d1..a26d6fd69d1 100644
--- a/tests/run-make-fulldeps/pgo-branch-weights/interesting.rs
+++ b/tests/run-make/pgo-branch-weights/interesting.rs
diff --git a/tests/run-make-fulldeps/pgo-branch-weights/main.rs b/tests/run-make/pgo-branch-weights/main.rs
index 619cf9c698c..619cf9c698c 100644
--- a/tests/run-make-fulldeps/pgo-branch-weights/main.rs
+++ b/tests/run-make/pgo-branch-weights/main.rs
diff --git a/tests/run-make-fulldeps/pgo-branch-weights/opaque.rs b/tests/run-make/pgo-branch-weights/opaque.rs
index 72f93c9feab..72f93c9feab 100644
--- a/tests/run-make-fulldeps/pgo-branch-weights/opaque.rs
+++ b/tests/run-make/pgo-branch-weights/opaque.rs
diff --git a/tests/run-make-fulldeps/pgo-gen-lto/Makefile b/tests/run-make/pgo-gen-lto/Makefile
index 3f2f6a838b5..3f2f6a838b5 100644
--- a/tests/run-make-fulldeps/pgo-gen-lto/Makefile
+++ b/tests/run-make/pgo-gen-lto/Makefile
diff --git a/tests/run-make-fulldeps/pgo-gen-lto/test.rs b/tests/run-make/pgo-gen-lto/test.rs
index f328e4d9d04..f328e4d9d04 100644
--- a/tests/run-make-fulldeps/pgo-gen-lto/test.rs
+++ b/tests/run-make/pgo-gen-lto/test.rs
diff --git a/tests/run-make-fulldeps/pgo-gen-no-imp-symbols/Makefile b/tests/run-make/pgo-gen-no-imp-symbols/Makefile
index 7f72b11b611..7f72b11b611 100644
--- a/tests/run-make-fulldeps/pgo-gen-no-imp-symbols/Makefile
+++ b/tests/run-make/pgo-gen-no-imp-symbols/Makefile
diff --git a/tests/run-make-fulldeps/pgo-gen-no-imp-symbols/test.rs b/tests/run-make/pgo-gen-no-imp-symbols/test.rs
index f328e4d9d04..f328e4d9d04 100644
--- a/tests/run-make-fulldeps/pgo-gen-no-imp-symbols/test.rs
+++ b/tests/run-make/pgo-gen-no-imp-symbols/test.rs
diff --git a/tests/run-make-fulldeps/pgo-gen/Makefile b/tests/run-make/pgo-gen/Makefile
index 4623a74957b..4623a74957b 100644
--- a/tests/run-make-fulldeps/pgo-gen/Makefile
+++ b/tests/run-make/pgo-gen/Makefile
diff --git a/tests/run-make-fulldeps/pgo-gen/test.rs b/tests/run-make/pgo-gen/test.rs
index f328e4d9d04..f328e4d9d04 100644
--- a/tests/run-make-fulldeps/pgo-gen/test.rs
+++ b/tests/run-make/pgo-gen/test.rs
diff --git a/tests/run-make-fulldeps/pgo-indirect-call-promotion/Makefile b/tests/run-make/pgo-indirect-call-promotion/Makefile
index 45302215cc6..45302215cc6 100644
--- a/tests/run-make-fulldeps/pgo-indirect-call-promotion/Makefile
+++ b/tests/run-make/pgo-indirect-call-promotion/Makefile
diff --git a/tests/run-make-fulldeps/pgo-indirect-call-promotion/filecheck-patterns.txt b/tests/run-make/pgo-indirect-call-promotion/filecheck-patterns.txt
index e19c78350e9..e19c78350e9 100644
--- a/tests/run-make-fulldeps/pgo-indirect-call-promotion/filecheck-patterns.txt
+++ b/tests/run-make/pgo-indirect-call-promotion/filecheck-patterns.txt
diff --git a/tests/run-make-fulldeps/pgo-indirect-call-promotion/interesting.rs b/tests/run-make/pgo-indirect-call-promotion/interesting.rs
index 4fd096d626d..4fd096d626d 100644
--- a/tests/run-make-fulldeps/pgo-indirect-call-promotion/interesting.rs
+++ b/tests/run-make/pgo-indirect-call-promotion/interesting.rs
diff --git a/tests/run-make-fulldeps/pgo-indirect-call-promotion/main.rs b/tests/run-make/pgo-indirect-call-promotion/main.rs
index 27181f30710..27181f30710 100644
--- a/tests/run-make-fulldeps/pgo-indirect-call-promotion/main.rs
+++ b/tests/run-make/pgo-indirect-call-promotion/main.rs
diff --git a/tests/run-make-fulldeps/pgo-indirect-call-promotion/opaque.rs b/tests/run-make/pgo-indirect-call-promotion/opaque.rs
index 9628d711c50..9628d711c50 100644
--- a/tests/run-make-fulldeps/pgo-indirect-call-promotion/opaque.rs
+++ b/tests/run-make/pgo-indirect-call-promotion/opaque.rs
diff --git a/tests/run-make-fulldeps/pgo-use/Makefile b/tests/run-make/pgo-use/Makefile
index 3bac9b77aa3..3bac9b77aa3 100644
--- a/tests/run-make-fulldeps/pgo-use/Makefile
+++ b/tests/run-make/pgo-use/Makefile
diff --git a/tests/run-make-fulldeps/pgo-use/filecheck-patterns.txt b/tests/run-make/pgo-use/filecheck-patterns.txt
index 6da34f88f2a..6da34f88f2a 100644
--- a/tests/run-make-fulldeps/pgo-use/filecheck-patterns.txt
+++ b/tests/run-make/pgo-use/filecheck-patterns.txt
diff --git a/tests/run-make-fulldeps/pgo-use/main.rs b/tests/run-make/pgo-use/main.rs
index eb9192c87e6..eb9192c87e6 100644
--- a/tests/run-make-fulldeps/pgo-use/main.rs
+++ b/tests/run-make/pgo-use/main.rs
diff --git a/tests/run-make-fulldeps/pointer-auth-link-with-c/Makefile b/tests/run-make/pointer-auth-link-with-c/Makefile
index 7acea03802c..7acea03802c 100644
--- a/tests/run-make-fulldeps/pointer-auth-link-with-c/Makefile
+++ b/tests/run-make/pointer-auth-link-with-c/Makefile
diff --git a/tests/run-make-fulldeps/pointer-auth-link-with-c/test.c b/tests/run-make/pointer-auth-link-with-c/test.c
index 9fe07f82f9e..9fe07f82f9e 100644
--- a/tests/run-make-fulldeps/pointer-auth-link-with-c/test.c
+++ b/tests/run-make/pointer-auth-link-with-c/test.c
diff --git a/tests/run-make-fulldeps/pointer-auth-link-with-c/test.rs b/tests/run-make/pointer-auth-link-with-c/test.rs
index 615ad0aeb3d..615ad0aeb3d 100644
--- a/tests/run-make-fulldeps/pointer-auth-link-with-c/test.rs
+++ b/tests/run-make/pointer-auth-link-with-c/test.rs
diff --git a/tests/run-make-fulldeps/prefer-dylib/Makefile b/tests/run-make/prefer-dylib/Makefile
index 3817ca195eb..cc26e70ae67 100644
--- a/tests/run-make-fulldeps/prefer-dylib/Makefile
+++ b/tests/run-make/prefer-dylib/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/prefer-dylib/bar.rs b/tests/run-make/prefer-dylib/bar.rs
index c5c0bc606cd..c5c0bc606cd 100644
--- a/tests/run-make-fulldeps/prefer-dylib/bar.rs
+++ b/tests/run-make/prefer-dylib/bar.rs
diff --git a/tests/run-make-fulldeps/prefer-dylib/foo.rs b/tests/run-make/prefer-dylib/foo.rs
index 8d68535e3b6..8d68535e3b6 100644
--- a/tests/run-make-fulldeps/prefer-dylib/foo.rs
+++ b/tests/run-make/prefer-dylib/foo.rs
diff --git a/tests/run-make-fulldeps/prefer-rlib/Makefile b/tests/run-make/prefer-rlib/Makefile
index adc345d760d..2e86b9c1dd7 100644
--- a/tests/run-make-fulldeps/prefer-rlib/Makefile
+++ b/tests/run-make/prefer-rlib/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/prefer-rlib/bar.rs b/tests/run-make/prefer-rlib/bar.rs
index c5c0bc606cd..c5c0bc606cd 100644
--- a/tests/run-make-fulldeps/prefer-rlib/bar.rs
+++ b/tests/run-make/prefer-rlib/bar.rs
diff --git a/tests/run-make-fulldeps/prefer-rlib/foo.rs b/tests/run-make/prefer-rlib/foo.rs
index 8d68535e3b6..8d68535e3b6 100644
--- a/tests/run-make-fulldeps/prefer-rlib/foo.rs
+++ b/tests/run-make/prefer-rlib/foo.rs
diff --git a/tests/run-make-fulldeps/pretty-print-to-file/Makefile b/tests/run-make/pretty-print-to-file/Makefile
index ca11b8c47f0..ca11b8c47f0 100644
--- a/tests/run-make-fulldeps/pretty-print-to-file/Makefile
+++ b/tests/run-make/pretty-print-to-file/Makefile
diff --git a/tests/run-make-fulldeps/pretty-print-to-file/input.pp b/tests/run-make/pretty-print-to-file/input.pp
index e3f03242a6e..e3f03242a6e 100644
--- a/tests/run-make-fulldeps/pretty-print-to-file/input.pp
+++ b/tests/run-make/pretty-print-to-file/input.pp
diff --git a/tests/run-make-fulldeps/pretty-print-to-file/input.rs b/tests/run-make/pretty-print-to-file/input.rs
index aa828155b20..aa828155b20 100644
--- a/tests/run-make-fulldeps/pretty-print-to-file/input.rs
+++ b/tests/run-make/pretty-print-to-file/input.rs
diff --git a/tests/run-make-fulldeps/print-calling-conventions/Makefile b/tests/run-make/print-calling-conventions/Makefile
index d3fd06392b0..27b87e61086 100644
--- a/tests/run-make-fulldeps/print-calling-conventions/Makefile
+++ b/tests/run-make/print-calling-conventions/Makefile
@@ -1,4 +1,4 @@
--include ../tools.mk
+include ../tools.mk
 
 all:
 	$(RUSTC) --print calling-conventions
diff --git a/tests/run-make-fulldeps/print-cfg/Makefile b/tests/run-make/print-cfg/Makefile
index 126f5768c90..126f5768c90 100644
--- a/tests/run-make-fulldeps/print-cfg/Makefile
+++ b/tests/run-make/print-cfg/Makefile
diff --git a/tests/run-make-fulldeps/print-target-list/Makefile b/tests/run-make/print-target-list/Makefile
index f23c40d4281..f23c40d4281 100644
--- a/tests/run-make-fulldeps/print-target-list/Makefile
+++ b/tests/run-make/print-target-list/Makefile
diff --git a/tests/run-make-fulldeps/profile/Makefile b/tests/run-make/profile/Makefile
index fffc051adbf..fffc051adbf 100644
--- a/tests/run-make-fulldeps/profile/Makefile
+++ b/tests/run-make/profile/Makefile
diff --git a/tests/run-make-fulldeps/profile/test.rs b/tests/run-make/profile/test.rs
index f328e4d9d04..f328e4d9d04 100644
--- a/tests/run-make-fulldeps/profile/test.rs
+++ b/tests/run-make/profile/test.rs
diff --git a/tests/run-make-fulldeps/prune-link-args/Makefile b/tests/run-make/prune-link-args/Makefile
index a359dc5aef1..c21ba6ace38 100644
--- a/tests/run-make-fulldeps/prune-link-args/Makefile
+++ b/tests/run-make/prune-link-args/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # ignore-windows
diff --git a/tests/run-make-fulldeps/prune-link-args/empty.rs b/tests/run-make/prune-link-args/empty.rs
index 45590d86ba6..45590d86ba6 100644
--- a/tests/run-make-fulldeps/prune-link-args/empty.rs
+++ b/tests/run-make/prune-link-args/empty.rs
diff --git a/tests/run-make/raw-dylib-alt-calling-convention/Makefile b/tests/run-make/raw-dylib-alt-calling-convention/Makefile
index 03f8778d25d..1744c431f9c 100644
--- a/tests/run-make/raw-dylib-alt-calling-convention/Makefile
+++ b/tests/run-make/raw-dylib-alt-calling-convention/Makefile
@@ -3,7 +3,7 @@
 # only-x86
 # only-windows
 
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 all:
 	$(RUSTC) --crate-type lib --crate-name raw_dylib_alt_calling_convention_test lib.rs
diff --git a/tests/run-make/raw-dylib-c/Makefile b/tests/run-make/raw-dylib-c/Makefile
index f47ab24f4fb..06e7935c026 100644
--- a/tests/run-make/raw-dylib-c/Makefile
+++ b/tests/run-make/raw-dylib-c/Makefile
@@ -2,7 +2,7 @@
 
 # only-windows
 
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 all:
 	$(RUSTC) --crate-type lib --crate-name raw_dylib_test lib.rs
diff --git a/tests/run-make/raw-dylib-cross-compilation/Makefile b/tests/run-make/raw-dylib-cross-compilation/Makefile
index 2a714f3a11f..a8f97edd689 100644
--- a/tests/run-make/raw-dylib-cross-compilation/Makefile
+++ b/tests/run-make/raw-dylib-cross-compilation/Makefile
@@ -7,7 +7,7 @@
 # i686 dlltool.exe can't product x64 binaries.
 # ignore-i686-pc-windows-gnu
 
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 all:
 	# Build as x86 and make sure that we have x86 objects only.
diff --git a/tests/run-make/raw-dylib-import-name-type/Makefile b/tests/run-make/raw-dylib-import-name-type/Makefile
index fcc60e88e1a..67152329807 100644
--- a/tests/run-make/raw-dylib-import-name-type/Makefile
+++ b/tests/run-make/raw-dylib-import-name-type/Makefile
@@ -3,7 +3,7 @@
 # only-x86
 # only-windows
 
--include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 all:
 	$(RUSTC) --crate-type bin driver.rs -L "$(TMPDIR)"
diff --git a/tests/run-make/raw-dylib-inline-cross-dylib/Makefile b/tests/run-make/raw-dylib-inline-cross-dylib/Makefile
index 722a49b02cb..6d1d04bfd37 100644
--- a/tests/run-make/raw-dylib-inline-cross-dylib/Makefile
+++ b/tests/run-make/raw-dylib-inline-cross-dylib/Makefile
@@ -2,7 +2,7 @@
 
 # only-windows
 
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # We'd be using the llvm-objdump instead of the system objdump to ensure compatibility
 # with the LLVM bitcode generated by rustc but on Windows  piping/IO redirection under MSYS2 is wonky with llvm-objdump.
diff --git a/tests/run-make/raw-dylib-link-ordinal/Makefile b/tests/run-make/raw-dylib-link-ordinal/Makefile
index b55a94dbc46..374a0b59de3 100644
--- a/tests/run-make/raw-dylib-link-ordinal/Makefile
+++ b/tests/run-make/raw-dylib-link-ordinal/Makefile
@@ -2,7 +2,7 @@
 
 # only-windows
 
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 all:
 	$(RUSTC) --crate-type lib --crate-name raw_dylib_test lib.rs
diff --git a/tests/run-make/raw-dylib-stdcall-ordinal/Makefile b/tests/run-make/raw-dylib-stdcall-ordinal/Makefile
index b9deb7729c2..178c15ab3de 100644
--- a/tests/run-make/raw-dylib-stdcall-ordinal/Makefile
+++ b/tests/run-make/raw-dylib-stdcall-ordinal/Makefile
@@ -3,7 +3,7 @@
 # only-x86
 # only-windows
 
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 all:
 	$(RUSTC) --crate-type lib --crate-name raw_dylib_test lib.rs
diff --git a/tests/run-make-fulldeps/redundant-libs/Makefile b/tests/run-make/redundant-libs/Makefile
index b2dff05d163..0a48b2b2801 100644
--- a/tests/run-make-fulldeps/redundant-libs/Makefile
+++ b/tests/run-make/redundant-libs/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # ignore-windows-msvc
diff --git a/tests/run-make-fulldeps/redundant-libs/bar.c b/tests/run-make/redundant-libs/bar.c
index e4259998678..e4259998678 100644
--- a/tests/run-make-fulldeps/redundant-libs/bar.c
+++ b/tests/run-make/redundant-libs/bar.c
diff --git a/tests/run-make-fulldeps/redundant-libs/baz.c b/tests/run-make/redundant-libs/baz.c
index a4e2c2b717f..a4e2c2b717f 100644
--- a/tests/run-make-fulldeps/redundant-libs/baz.c
+++ b/tests/run-make/redundant-libs/baz.c
diff --git a/tests/run-make-fulldeps/redundant-libs/foo.c b/tests/run-make/redundant-libs/foo.c
index 339ee86c99e..339ee86c99e 100644
--- a/tests/run-make-fulldeps/redundant-libs/foo.c
+++ b/tests/run-make/redundant-libs/foo.c
diff --git a/tests/run-make-fulldeps/redundant-libs/main.rs b/tests/run-make/redundant-libs/main.rs
index 90d185ff51d..90d185ff51d 100644
--- a/tests/run-make-fulldeps/redundant-libs/main.rs
+++ b/tests/run-make/redundant-libs/main.rs
diff --git a/tests/run-make-fulldeps/relocation-model/Makefile b/tests/run-make/relocation-model/Makefile
index a31dbfd9167..8cc5205ed51 100644
--- a/tests/run-make-fulldeps/relocation-model/Makefile
+++ b/tests/run-make/relocation-model/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: others
diff --git a/tests/run-make-fulldeps/relocation-model/foo.rs b/tests/run-make/relocation-model/foo.rs
index da0f5d925d1..da0f5d925d1 100644
--- a/tests/run-make-fulldeps/relocation-model/foo.rs
+++ b/tests/run-make/relocation-model/foo.rs
diff --git a/tests/run-make-fulldeps/relro-levels/Makefile b/tests/run-make/relro-levels/Makefile
index 6176fc1a589..e0402f59f12 100644
--- a/tests/run-make-fulldeps/relro-levels/Makefile
+++ b/tests/run-make/relro-levels/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # only-linux
diff --git a/tests/run-make-fulldeps/relro-levels/hello.rs b/tests/run-make/relro-levels/hello.rs
index e7a11a969c0..e7a11a969c0 100644
--- a/tests/run-make-fulldeps/relro-levels/hello.rs
+++ b/tests/run-make/relro-levels/hello.rs
diff --git a/tests/run-make/remap-path-prefix-dwarf/Makefile b/tests/run-make/remap-path-prefix-dwarf/Makefile
index fbaea7b68fe..c9ede1b6027 100644
--- a/tests/run-make/remap-path-prefix-dwarf/Makefile
+++ b/tests/run-make/remap-path-prefix-dwarf/Makefile
@@ -6,7 +6,7 @@
 SRC_DIR := $(abspath .)
 SRC_DIR_PARENT := $(abspath ..)
 
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 all: \
   abs_input_outside_working_dir \
diff --git a/tests/run-make-fulldeps/remap-path-prefix/Makefile b/tests/run-make/remap-path-prefix/Makefile
index 2a7378fdf9e..2a7378fdf9e 100644
--- a/tests/run-make-fulldeps/remap-path-prefix/Makefile
+++ b/tests/run-make/remap-path-prefix/Makefile
diff --git a/tests/run-make-fulldeps/remap-path-prefix/auxiliary/lib.rs b/tests/run-make/remap-path-prefix/auxiliary/lib.rs
index 019c786a902..019c786a902 100644
--- a/tests/run-make-fulldeps/remap-path-prefix/auxiliary/lib.rs
+++ b/tests/run-make/remap-path-prefix/auxiliary/lib.rs
diff --git a/tests/run-make/repr128-dwarf/Makefile b/tests/run-make/repr128-dwarf/Makefile
index 2b03c22c0d0..3f933042724 100644
--- a/tests/run-make/repr128-dwarf/Makefile
+++ b/tests/run-make/repr128-dwarf/Makefile
@@ -2,7 +2,7 @@
 # This test should be replaced with one in tests/debuginfo once GDB or LLDB support 128-bit
 # enums.
 
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 all:
 	$(RUSTC) -Cdebuginfo=2 lib.rs -o $(TMPDIR)/repr128.rlib
diff --git a/tests/run-make-fulldeps/reproducible-build-2/Makefile b/tests/run-make/reproducible-build-2/Makefile
index 1df5e102ce3..68fcac8b47f 100644
--- a/tests/run-make-fulldeps/reproducible-build-2/Makefile
+++ b/tests/run-make/reproducible-build-2/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # ignore-musl
diff --git a/tests/run-make-fulldeps/reproducible-build-2/linker.rs b/tests/run-make/reproducible-build-2/linker.rs
index 998d1f32859..998d1f32859 100644
--- a/tests/run-make-fulldeps/reproducible-build-2/linker.rs
+++ b/tests/run-make/reproducible-build-2/linker.rs
diff --git a/tests/run-make-fulldeps/reproducible-build-2/reproducible-build-aux.rs b/tests/run-make/reproducible-build-2/reproducible-build-aux.rs
index 8105b3d2bda..8105b3d2bda 100644
--- a/tests/run-make-fulldeps/reproducible-build-2/reproducible-build-aux.rs
+++ b/tests/run-make/reproducible-build-2/reproducible-build-aux.rs
diff --git a/tests/run-make-fulldeps/reproducible-build-2/reproducible-build.rs b/tests/run-make/reproducible-build-2/reproducible-build.rs
index a6c04774c86..a6c04774c86 100644
--- a/tests/run-make-fulldeps/reproducible-build-2/reproducible-build.rs
+++ b/tests/run-make/reproducible-build-2/reproducible-build.rs
diff --git a/tests/run-make-fulldeps/reproducible-build/Makefile b/tests/run-make/reproducible-build/Makefile
index 642a480815b..f5d17a234c0 100644
--- a/tests/run-make-fulldeps/reproducible-build/Makefile
+++ b/tests/run-make/reproducible-build/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # ignore-musl
diff --git a/tests/run-make-fulldeps/reproducible-build/linker.rs b/tests/run-make/reproducible-build/linker.rs
index 3dda6f190e4..3dda6f190e4 100644
--- a/tests/run-make-fulldeps/reproducible-build/linker.rs
+++ b/tests/run-make/reproducible-build/linker.rs
diff --git a/tests/run-make-fulldeps/reproducible-build/reproducible-build-aux.rs b/tests/run-make/reproducible-build/reproducible-build-aux.rs
index 8105b3d2bda..8105b3d2bda 100644
--- a/tests/run-make-fulldeps/reproducible-build/reproducible-build-aux.rs
+++ b/tests/run-make/reproducible-build/reproducible-build-aux.rs
diff --git a/tests/run-make-fulldeps/reproducible-build/reproducible-build.rs b/tests/run-make/reproducible-build/reproducible-build.rs
index a6c04774c86..a6c04774c86 100644
--- a/tests/run-make-fulldeps/reproducible-build/reproducible-build.rs
+++ b/tests/run-make/reproducible-build/reproducible-build.rs
diff --git a/tests/run-make-fulldeps/resolve-rename/Makefile b/tests/run-make/resolve-rename/Makefile
index 00f83a5d6b2..00f83a5d6b2 100644
--- a/tests/run-make-fulldeps/resolve-rename/Makefile
+++ b/tests/run-make/resolve-rename/Makefile
diff --git a/tests/run-make-fulldeps/resolve-rename/bar.rs b/tests/run-make/resolve-rename/bar.rs
index 4a09ce355e6..4a09ce355e6 100644
--- a/tests/run-make-fulldeps/resolve-rename/bar.rs
+++ b/tests/run-make/resolve-rename/bar.rs
diff --git a/tests/run-make-fulldeps/resolve-rename/baz.rs b/tests/run-make/resolve-rename/baz.rs
index 9176073ef97..9176073ef97 100644
--- a/tests/run-make-fulldeps/resolve-rename/baz.rs
+++ b/tests/run-make/resolve-rename/baz.rs
diff --git a/tests/run-make-fulldeps/resolve-rename/foo.rs b/tests/run-make/resolve-rename/foo.rs
index bd6820098ee..bd6820098ee 100644
--- a/tests/run-make-fulldeps/resolve-rename/foo.rs
+++ b/tests/run-make/resolve-rename/foo.rs
diff --git a/tests/run-make-fulldeps/return-non-c-like-enum-from-c/Makefile b/tests/run-make/return-non-c-like-enum-from-c/Makefile
index 42d3c977f75..bd441d321bf 100644
--- a/tests/run-make-fulldeps/return-non-c-like-enum-from-c/Makefile
+++ b/tests/run-make/return-non-c-like-enum-from-c/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: $(call NATIVE_STATICLIB,test)
diff --git a/tests/run-make-fulldeps/return-non-c-like-enum-from-c/nonclike.rs b/tests/run-make/return-non-c-like-enum-from-c/nonclike.rs
index ea22a2a56e0..ea22a2a56e0 100644
--- a/tests/run-make-fulldeps/return-non-c-like-enum-from-c/nonclike.rs
+++ b/tests/run-make/return-non-c-like-enum-from-c/nonclike.rs
diff --git a/tests/run-make-fulldeps/return-non-c-like-enum-from-c/test.c b/tests/run-make/return-non-c-like-enum-from-c/test.c
index 3ad135bab4a..3ad135bab4a 100644
--- a/tests/run-make-fulldeps/return-non-c-like-enum-from-c/test.c
+++ b/tests/run-make/return-non-c-like-enum-from-c/test.c
diff --git a/tests/run-make-fulldeps/return-non-c-like-enum/Makefile b/tests/run-make/return-non-c-like-enum/Makefile
index 513311c8289..0c8d8bf3acc 100644
--- a/tests/run-make-fulldeps/return-non-c-like-enum/Makefile
+++ b/tests/run-make/return-non-c-like-enum/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/return-non-c-like-enum/nonclike.rs b/tests/run-make/return-non-c-like-enum/nonclike.rs
index de529cf641a..de529cf641a 100644
--- a/tests/run-make-fulldeps/return-non-c-like-enum/nonclike.rs
+++ b/tests/run-make/return-non-c-like-enum/nonclike.rs
diff --git a/tests/run-make-fulldeps/return-non-c-like-enum/test.c b/tests/run-make/return-non-c-like-enum/test.c
index afadd3c10c5..afadd3c10c5 100644
--- a/tests/run-make-fulldeps/return-non-c-like-enum/test.c
+++ b/tests/run-make/return-non-c-like-enum/test.c
diff --git a/tests/run-make-fulldeps/rlib-chain/Makefile b/tests/run-make/rlib-chain/Makefile
index 236943a2a3b..7a1f887fa52 100644
--- a/tests/run-make-fulldeps/rlib-chain/Makefile
+++ b/tests/run-make/rlib-chain/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/rlib-chain/m1.rs b/tests/run-make/rlib-chain/m1.rs
index 665b206ccf1..665b206ccf1 100644
--- a/tests/run-make-fulldeps/rlib-chain/m1.rs
+++ b/tests/run-make/rlib-chain/m1.rs
diff --git a/tests/run-make-fulldeps/rlib-chain/m2.rs b/tests/run-make/rlib-chain/m2.rs
index eba12fe1218..eba12fe1218 100644
--- a/tests/run-make-fulldeps/rlib-chain/m2.rs
+++ b/tests/run-make/rlib-chain/m2.rs
diff --git a/tests/run-make-fulldeps/rlib-chain/m3.rs b/tests/run-make/rlib-chain/m3.rs
index ade191db49c..ade191db49c 100644
--- a/tests/run-make-fulldeps/rlib-chain/m3.rs
+++ b/tests/run-make/rlib-chain/m3.rs
diff --git a/tests/run-make-fulldeps/rlib-chain/m4.rs b/tests/run-make/rlib-chain/m4.rs
index fa8ec6079de..fa8ec6079de 100644
--- a/tests/run-make-fulldeps/rlib-chain/m4.rs
+++ b/tests/run-make/rlib-chain/m4.rs
diff --git a/tests/run-make/rlib-format-packed-bundled-libs-2/Makefile b/tests/run-make/rlib-format-packed-bundled-libs-2/Makefile
index 37b8d809a27..d2a740b06b3 100644
--- a/tests/run-make/rlib-format-packed-bundled-libs-2/Makefile
+++ b/tests/run-make/rlib-format-packed-bundled-libs-2/Makefile
@@ -1,4 +1,4 @@
--include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # ignore-cross-compile
 
diff --git a/tests/run-make/rlib-format-packed-bundled-libs-3/Makefile b/tests/run-make/rlib-format-packed-bundled-libs-3/Makefile
index 62dc1b5f606..1f2812cb087 100644
--- a/tests/run-make/rlib-format-packed-bundled-libs-3/Makefile
+++ b/tests/run-make/rlib-format-packed-bundled-libs-3/Makefile
@@ -1,4 +1,4 @@
--include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # ignore-cross-compile
 # only-linux
diff --git a/tests/run-make/rlib-format-packed-bundled-libs/Makefile b/tests/run-make/rlib-format-packed-bundled-libs/Makefile
index 7fb6ce8d1e4..f454da67893 100644
--- a/tests/run-make/rlib-format-packed-bundled-libs/Makefile
+++ b/tests/run-make/rlib-format-packed-bundled-libs/Makefile
@@ -1,4 +1,4 @@
--include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # ignore-cross-compile
 
diff --git a/tests/run-make/rustc-macro-dep-files/Makefile b/tests/run-make/rustc-macro-dep-files/Makefile
index 6ae659db2e9..76d713c4bb3 100644
--- a/tests/run-make/rustc-macro-dep-files/Makefile
+++ b/tests/run-make/rustc-macro-dep-files/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # FIXME(eddyb) provide `HOST_RUSTC` and `TARGET_RUSTC`
 # instead of hardcoding them everywhere they're needed.
diff --git a/tests/run-make-fulldeps/rustdoc-determinism/Makefile b/tests/run-make/rustdoc-determinism/Makefile
index a3ef1690671..a3ef1690671 100644
--- a/tests/run-make-fulldeps/rustdoc-determinism/Makefile
+++ b/tests/run-make/rustdoc-determinism/Makefile
diff --git a/tests/run-make-fulldeps/rustdoc-determinism/bar.rs b/tests/run-make/rustdoc-determinism/bar.rs
index ca05a6a9076..ca05a6a9076 100644
--- a/tests/run-make-fulldeps/rustdoc-determinism/bar.rs
+++ b/tests/run-make/rustdoc-determinism/bar.rs
diff --git a/tests/run-make-fulldeps/rustdoc-determinism/foo.rs b/tests/run-make/rustdoc-determinism/foo.rs
index 4a835673a59..4a835673a59 100644
--- a/tests/run-make-fulldeps/rustdoc-determinism/foo.rs
+++ b/tests/run-make/rustdoc-determinism/foo.rs
diff --git a/tests/run-make-fulldeps/rustdoc-error-lines/Makefile b/tests/run-make/rustdoc-error-lines/Makefile
index 2dc30f56b83..2dc30f56b83 100644
--- a/tests/run-make-fulldeps/rustdoc-error-lines/Makefile
+++ b/tests/run-make/rustdoc-error-lines/Makefile
diff --git a/tests/run-make-fulldeps/rustdoc-error-lines/input.rs b/tests/run-make/rustdoc-error-lines/input.rs
index b4db182e85f..b4db182e85f 100644
--- a/tests/run-make-fulldeps/rustdoc-error-lines/input.rs
+++ b/tests/run-make/rustdoc-error-lines/input.rs
diff --git a/tests/run-make-fulldeps/rustdoc-io-error/Makefile b/tests/run-make/rustdoc-io-error/Makefile
index 27f5ecf94ab..27f5ecf94ab 100644
--- a/tests/run-make-fulldeps/rustdoc-io-error/Makefile
+++ b/tests/run-make/rustdoc-io-error/Makefile
diff --git a/tests/run-make-fulldeps/rustdoc-io-error/foo.rs b/tests/run-make/rustdoc-io-error/foo.rs
index 4a835673a59..4a835673a59 100644
--- a/tests/run-make-fulldeps/rustdoc-io-error/foo.rs
+++ b/tests/run-make/rustdoc-io-error/foo.rs
diff --git a/tests/run-make-fulldeps/rustdoc-map-file/Makefile b/tests/run-make/rustdoc-map-file/Makefile
index 5cbf7747af6..5cbf7747af6 100644
--- a/tests/run-make-fulldeps/rustdoc-map-file/Makefile
+++ b/tests/run-make/rustdoc-map-file/Makefile
diff --git a/tests/run-make-fulldeps/rustdoc-map-file/expected.json b/tests/run-make/rustdoc-map-file/expected.json
index 6b1ccbeac30..6b1ccbeac30 100644
--- a/tests/run-make-fulldeps/rustdoc-map-file/expected.json
+++ b/tests/run-make/rustdoc-map-file/expected.json
diff --git a/tests/run-make-fulldeps/rustdoc-map-file/foo.rs b/tests/run-make/rustdoc-map-file/foo.rs
index e12b9d2292c..e12b9d2292c 100644
--- a/tests/run-make-fulldeps/rustdoc-map-file/foo.rs
+++ b/tests/run-make/rustdoc-map-file/foo.rs
diff --git a/tests/run-make-fulldeps/rustdoc-map-file/validate_json.py b/tests/run-make/rustdoc-map-file/validate_json.py
index 5c14c90b70d..5c14c90b70d 100755
--- a/tests/run-make-fulldeps/rustdoc-map-file/validate_json.py
+++ b/tests/run-make/rustdoc-map-file/validate_json.py
diff --git a/tests/run-make-fulldeps/rustdoc-output-path/Makefile b/tests/run-make/rustdoc-output-path/Makefile
index 8f5cda9e56e..8f5cda9e56e 100644
--- a/tests/run-make-fulldeps/rustdoc-output-path/Makefile
+++ b/tests/run-make/rustdoc-output-path/Makefile
diff --git a/tests/run-make-fulldeps/rustdoc-output-path/foo.rs b/tests/run-make/rustdoc-output-path/foo.rs
index 4a835673a59..4a835673a59 100644
--- a/tests/run-make-fulldeps/rustdoc-output-path/foo.rs
+++ b/tests/run-make/rustdoc-output-path/foo.rs
diff --git a/tests/run-make-fulldeps/rustdoc-scrape-examples-macros/Makefile b/tests/run-make/rustdoc-scrape-examples-macros/Makefile
index c857aa4b993..edc19d8cb5d 100644
--- a/tests/run-make-fulldeps/rustdoc-scrape-examples-macros/Makefile
+++ b/tests/run-make/rustdoc-scrape-examples-macros/Makefile
@@ -1,4 +1,5 @@
-include ../../run-make-fulldeps/tools.mk
+# ignore-cross-compile
+include ../../run-make/tools.mk
 
 OUTPUT_DIR := "$(TMPDIR)/rustdoc"
 DYLIB_NAME := $(shell echo | $(RUSTC) --crate-name foobar_macro --crate-type dylib --print file-names -)
diff --git a/tests/run-make-fulldeps/rustdoc-scrape-examples-macros/examples/ex.rs b/tests/run-make/rustdoc-scrape-examples-macros/examples/ex.rs
index 4d8c8b30e31..4d8c8b30e31 100644
--- a/tests/run-make-fulldeps/rustdoc-scrape-examples-macros/examples/ex.rs
+++ b/tests/run-make/rustdoc-scrape-examples-macros/examples/ex.rs
diff --git a/tests/run-make-fulldeps/rustdoc-scrape-examples-macros/src/lib.rs b/tests/run-make/rustdoc-scrape-examples-macros/src/lib.rs
index d8658a0f255..d8658a0f255 100644
--- a/tests/run-make-fulldeps/rustdoc-scrape-examples-macros/src/lib.rs
+++ b/tests/run-make/rustdoc-scrape-examples-macros/src/lib.rs
diff --git a/tests/run-make-fulldeps/rustdoc-scrape-examples-macros/src/proc.rs b/tests/run-make/rustdoc-scrape-examples-macros/src/proc.rs
index 46e518fdf6a..46e518fdf6a 100644
--- a/tests/run-make-fulldeps/rustdoc-scrape-examples-macros/src/proc.rs
+++ b/tests/run-make/rustdoc-scrape-examples-macros/src/proc.rs
diff --git a/tests/run-make/rustdoc-scrape-examples-multiple/scrape.mk b/tests/run-make/rustdoc-scrape-examples-multiple/scrape.mk
index 7a28d2145d5..57220bc6635 100644
--- a/tests/run-make/rustdoc-scrape-examples-multiple/scrape.mk
+++ b/tests/run-make/rustdoc-scrape-examples-multiple/scrape.mk
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 OUTPUT_DIR := "$(TMPDIR)/rustdoc"
 
diff --git a/tests/run-make-fulldeps/rustdoc-target-spec-json-path/Makefile b/tests/run-make/rustdoc-target-spec-json-path/Makefile
index 6d0bc4186f2..6d0bc4186f2 100644
--- a/tests/run-make-fulldeps/rustdoc-target-spec-json-path/Makefile
+++ b/tests/run-make/rustdoc-target-spec-json-path/Makefile
diff --git a/tests/run-make-fulldeps/rustdoc-target-spec-json-path/dummy_core.rs b/tests/run-make/rustdoc-target-spec-json-path/dummy_core.rs
index da27b7f3463..da27b7f3463 100644
--- a/tests/run-make-fulldeps/rustdoc-target-spec-json-path/dummy_core.rs
+++ b/tests/run-make/rustdoc-target-spec-json-path/dummy_core.rs
diff --git a/tests/run-make-fulldeps/rustdoc-target-spec-json-path/my_crate.rs b/tests/run-make/rustdoc-target-spec-json-path/my_crate.rs
index 12aa0822084..12aa0822084 100644
--- a/tests/run-make-fulldeps/rustdoc-target-spec-json-path/my_crate.rs
+++ b/tests/run-make/rustdoc-target-spec-json-path/my_crate.rs
diff --git a/tests/run-make-fulldeps/rustdoc-target-spec-json-path/target.json b/tests/run-make/rustdoc-target-spec-json-path/target.json
index 34357182c20..34357182c20 100644
--- a/tests/run-make-fulldeps/rustdoc-target-spec-json-path/target.json
+++ b/tests/run-make/rustdoc-target-spec-json-path/target.json
diff --git a/tests/run-make-fulldeps/rustdoc-themes/Makefile b/tests/run-make/rustdoc-themes/Makefile
index a6d9a43addf..a6d9a43addf 100644
--- a/tests/run-make-fulldeps/rustdoc-themes/Makefile
+++ b/tests/run-make/rustdoc-themes/Makefile
diff --git a/tests/run-make-fulldeps/rustdoc-themes/foo.rs b/tests/run-make/rustdoc-themes/foo.rs
index 995544aeff9..995544aeff9 100644
--- a/tests/run-make-fulldeps/rustdoc-themes/foo.rs
+++ b/tests/run-make/rustdoc-themes/foo.rs
diff --git a/tests/run-make/rustdoc-verify-output-files/Makefile b/tests/run-make/rustdoc-verify-output-files/Makefile
index 0666122e8ab..57ac7078d14 100644
--- a/tests/run-make/rustdoc-verify-output-files/Makefile
+++ b/tests/run-make/rustdoc-verify-output-files/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 OUTPUT_DIR := "$(TMPDIR)/rustdoc"
 TMP_OUTPUT_DIR := "$(TMPDIR)/tmp-rustdoc"
diff --git a/tests/run-make/rustdoc-with-out-dir-option/Makefile b/tests/run-make/rustdoc-with-out-dir-option/Makefile
index b3c3f5230c1..f5d5060ed13 100644
--- a/tests/run-make/rustdoc-with-out-dir-option/Makefile
+++ b/tests/run-make/rustdoc-with-out-dir-option/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 OUTPUT_DIR := "$(TMPDIR)/rustdoc"
 
diff --git a/tests/run-make/rustdoc-with-output-option/Makefile b/tests/run-make/rustdoc-with-output-option/Makefile
index 02093a35cfc..d0a8205a8ee 100644
--- a/tests/run-make/rustdoc-with-output-option/Makefile
+++ b/tests/run-make/rustdoc-with-output-option/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 OUTPUT_DIR := "$(TMPDIR)/rustdoc"
 
diff --git a/tests/run-make/rustdoc-with-short-out-dir-option/Makefile b/tests/run-make/rustdoc-with-short-out-dir-option/Makefile
index dc5056a86dd..1b9327bce22 100644
--- a/tests/run-make/rustdoc-with-short-out-dir-option/Makefile
+++ b/tests/run-make/rustdoc-with-short-out-dir-option/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 OUTPUT_DIR := "$(TMPDIR)/rustdoc"
 
diff --git a/tests/run-make-fulldeps/sanitizer-cdylib-link/Makefile b/tests/run-make/sanitizer-cdylib-link/Makefile
index 691585268bf..691585268bf 100644
--- a/tests/run-make-fulldeps/sanitizer-cdylib-link/Makefile
+++ b/tests/run-make/sanitizer-cdylib-link/Makefile
diff --git a/tests/run-make-fulldeps/sanitizer-cdylib-link/library.rs b/tests/run-make/sanitizer-cdylib-link/library.rs
index f2a52cb5ca1..f2a52cb5ca1 100644
--- a/tests/run-make-fulldeps/sanitizer-cdylib-link/library.rs
+++ b/tests/run-make/sanitizer-cdylib-link/library.rs
diff --git a/tests/run-make-fulldeps/sanitizer-cdylib-link/program.rs b/tests/run-make/sanitizer-cdylib-link/program.rs
index ef053aa2e7a..ef053aa2e7a 100644
--- a/tests/run-make-fulldeps/sanitizer-cdylib-link/program.rs
+++ b/tests/run-make/sanitizer-cdylib-link/program.rs
diff --git a/tests/run-make-fulldeps/sanitizer-dylib-link/Makefile b/tests/run-make/sanitizer-dylib-link/Makefile
index b0a91e5b197..b0a91e5b197 100644
--- a/tests/run-make-fulldeps/sanitizer-dylib-link/Makefile
+++ b/tests/run-make/sanitizer-dylib-link/Makefile
diff --git a/tests/run-make-fulldeps/sanitizer-dylib-link/library.rs b/tests/run-make/sanitizer-dylib-link/library.rs
index f2a52cb5ca1..f2a52cb5ca1 100644
--- a/tests/run-make-fulldeps/sanitizer-dylib-link/library.rs
+++ b/tests/run-make/sanitizer-dylib-link/library.rs
diff --git a/tests/run-make-fulldeps/sanitizer-dylib-link/program.rs b/tests/run-make/sanitizer-dylib-link/program.rs
index ef053aa2e7a..ef053aa2e7a 100644
--- a/tests/run-make-fulldeps/sanitizer-dylib-link/program.rs
+++ b/tests/run-make/sanitizer-dylib-link/program.rs
diff --git a/tests/run-make-fulldeps/sanitizer-staticlib-link/Makefile b/tests/run-make/sanitizer-staticlib-link/Makefile
index 7b1a286ed12..7b1a286ed12 100644
--- a/tests/run-make-fulldeps/sanitizer-staticlib-link/Makefile
+++ b/tests/run-make/sanitizer-staticlib-link/Makefile
diff --git a/tests/run-make-fulldeps/sanitizer-staticlib-link/library.rs b/tests/run-make/sanitizer-staticlib-link/library.rs
index f2a52cb5ca1..f2a52cb5ca1 100644
--- a/tests/run-make-fulldeps/sanitizer-staticlib-link/library.rs
+++ b/tests/run-make/sanitizer-staticlib-link/library.rs
diff --git a/tests/run-make-fulldeps/sanitizer-staticlib-link/program.c b/tests/run-make/sanitizer-staticlib-link/program.c
index 735e2b147fd..735e2b147fd 100644
--- a/tests/run-make-fulldeps/sanitizer-staticlib-link/program.c
+++ b/tests/run-make/sanitizer-staticlib-link/program.c
diff --git a/tests/run-make-fulldeps/sanitizer-staticlib-link/program.rs b/tests/run-make/sanitizer-staticlib-link/program.rs
index ec59bdb11c8..ec59bdb11c8 100644
--- a/tests/run-make-fulldeps/sanitizer-staticlib-link/program.rs
+++ b/tests/run-make/sanitizer-staticlib-link/program.rs
diff --git a/tests/run-make-fulldeps/separate-link-fail/Makefile b/tests/run-make/separate-link-fail/Makefile
index bfd18fbf972..bfd18fbf972 100644
--- a/tests/run-make-fulldeps/separate-link-fail/Makefile
+++ b/tests/run-make/separate-link-fail/Makefile
diff --git a/tests/run-make-fulldeps/separate-link/Makefile b/tests/run-make/separate-link/Makefile
index 3ccdb6275d1..d01158d9f5f 100644
--- a/tests/run-make-fulldeps/separate-link/Makefile
+++ b/tests/run-make/separate-link/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/sepcomp-cci-copies/Makefile b/tests/run-make/sepcomp-cci-copies/Makefile
index df289d0b0b1..df289d0b0b1 100644
--- a/tests/run-make-fulldeps/sepcomp-cci-copies/Makefile
+++ b/tests/run-make/sepcomp-cci-copies/Makefile
diff --git a/tests/run-make-fulldeps/sepcomp-cci-copies/cci_lib.rs b/tests/run-make/sepcomp-cci-copies/cci_lib.rs
index 869d4a6cd3e..869d4a6cd3e 100644
--- a/tests/run-make-fulldeps/sepcomp-cci-copies/cci_lib.rs
+++ b/tests/run-make/sepcomp-cci-copies/cci_lib.rs
diff --git a/tests/run-make-fulldeps/sepcomp-cci-copies/foo.rs b/tests/run-make/sepcomp-cci-copies/foo.rs
index ba251fcb0ac..ba251fcb0ac 100644
--- a/tests/run-make-fulldeps/sepcomp-cci-copies/foo.rs
+++ b/tests/run-make/sepcomp-cci-copies/foo.rs
diff --git a/tests/run-make-fulldeps/sepcomp-inlining/Makefile b/tests/run-make/sepcomp-inlining/Makefile
index 327aeb75e5e..327aeb75e5e 100644
--- a/tests/run-make-fulldeps/sepcomp-inlining/Makefile
+++ b/tests/run-make/sepcomp-inlining/Makefile
diff --git a/tests/run-make-fulldeps/sepcomp-inlining/foo.rs b/tests/run-make/sepcomp-inlining/foo.rs
index 2fe5f9cb726..2fe5f9cb726 100644
--- a/tests/run-make-fulldeps/sepcomp-inlining/foo.rs
+++ b/tests/run-make/sepcomp-inlining/foo.rs
diff --git a/tests/run-make-fulldeps/sepcomp-separate/Makefile b/tests/run-make/sepcomp-separate/Makefile
index 62cf54a88fb..62cf54a88fb 100644
--- a/tests/run-make-fulldeps/sepcomp-separate/Makefile
+++ b/tests/run-make/sepcomp-separate/Makefile
diff --git a/tests/run-make-fulldeps/sepcomp-separate/foo.rs b/tests/run-make/sepcomp-separate/foo.rs
index 169bafa9b3a..169bafa9b3a 100644
--- a/tests/run-make-fulldeps/sepcomp-separate/foo.rs
+++ b/tests/run-make/sepcomp-separate/foo.rs
diff --git a/tests/run-make-fulldeps/share-generics-dylib/Makefile b/tests/run-make/share-generics-dylib/Makefile
index 065fb574c3c..9d97eca80d3 100644
--- a/tests/run-make-fulldeps/share-generics-dylib/Makefile
+++ b/tests/run-make/share-generics-dylib/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 # This test makes sure all generic instances get re-exported from Rust dylibs for use by
 # `-Zshare-generics`. There are two rlibs (`instance_provider_a` and `instance_provider_b`)
 # which both provide an instance of `Cell<i32>::set`. There is `instance_user_dylib` which is
@@ -9,7 +10,7 @@
 #
 # This is regression test for https://github.com/rust-lang/rust/issues/67276.
 
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 COMMON_ARGS=-Cprefer-dynamic -Zshare-generics=yes -Ccodegen-units=1 -Csymbol-mangling-version=v0
 
diff --git a/tests/run-make-fulldeps/share-generics-dylib/instance_provider_a.rs b/tests/run-make/share-generics-dylib/instance_provider_a.rs
index b4e125ac052..b4e125ac052 100644
--- a/tests/run-make-fulldeps/share-generics-dylib/instance_provider_a.rs
+++ b/tests/run-make/share-generics-dylib/instance_provider_a.rs
diff --git a/tests/run-make-fulldeps/share-generics-dylib/instance_provider_b.rs b/tests/run-make/share-generics-dylib/instance_provider_b.rs
index f613db873e6..f613db873e6 100644
--- a/tests/run-make-fulldeps/share-generics-dylib/instance_provider_b.rs
+++ b/tests/run-make/share-generics-dylib/instance_provider_b.rs
diff --git a/tests/run-make-fulldeps/share-generics-dylib/instance_user_a_rlib.rs b/tests/run-make/share-generics-dylib/instance_user_a_rlib.rs
index c8e6ab95cf9..c8e6ab95cf9 100644
--- a/tests/run-make-fulldeps/share-generics-dylib/instance_user_a_rlib.rs
+++ b/tests/run-make/share-generics-dylib/instance_user_a_rlib.rs
diff --git a/tests/run-make-fulldeps/share-generics-dylib/instance_user_b_rlib.rs b/tests/run-make/share-generics-dylib/instance_user_b_rlib.rs
index 7c34af6d0dc..7c34af6d0dc 100644
--- a/tests/run-make-fulldeps/share-generics-dylib/instance_user_b_rlib.rs
+++ b/tests/run-make/share-generics-dylib/instance_user_b_rlib.rs
diff --git a/tests/run-make-fulldeps/share-generics-dylib/instance_user_dylib.rs b/tests/run-make/share-generics-dylib/instance_user_dylib.rs
index 7c8368eec65..7c8368eec65 100644
--- a/tests/run-make-fulldeps/share-generics-dylib/instance_user_dylib.rs
+++ b/tests/run-make/share-generics-dylib/instance_user_dylib.rs
diff --git a/tests/run-make-fulldeps/share-generics-dylib/linked_leaf.rs b/tests/run-make/share-generics-dylib/linked_leaf.rs
index e510dad691c..e510dad691c 100644
--- a/tests/run-make-fulldeps/share-generics-dylib/linked_leaf.rs
+++ b/tests/run-make/share-generics-dylib/linked_leaf.rs
diff --git a/tests/run-make-fulldeps/simd-ffi/Makefile b/tests/run-make/simd-ffi/Makefile
index 29735347041..29735347041 100644
--- a/tests/run-make-fulldeps/simd-ffi/Makefile
+++ b/tests/run-make/simd-ffi/Makefile
diff --git a/tests/run-make-fulldeps/simd-ffi/simd.rs b/tests/run-make/simd-ffi/simd.rs
index d11cfd77c5b..d11cfd77c5b 100644
--- a/tests/run-make-fulldeps/simd-ffi/simd.rs
+++ b/tests/run-make/simd-ffi/simd.rs
diff --git a/tests/run-make-fulldeps/simple-dylib/Makefile b/tests/run-make/simple-dylib/Makefile
index 5dda5d66d1c..f3e1c1da88c 100644
--- a/tests/run-make-fulldeps/simple-dylib/Makefile
+++ b/tests/run-make/simple-dylib/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 all:
 	$(RUSTC) bar.rs --crate-type=dylib -C prefer-dynamic
diff --git a/tests/run-make-fulldeps/simple-dylib/bar.rs b/tests/run-make/simple-dylib/bar.rs
index c5c0bc606cd..c5c0bc606cd 100644
--- a/tests/run-make-fulldeps/simple-dylib/bar.rs
+++ b/tests/run-make/simple-dylib/bar.rs
diff --git a/tests/run-make-fulldeps/simple-dylib/foo.rs b/tests/run-make/simple-dylib/foo.rs
index 8d68535e3b6..8d68535e3b6 100644
--- a/tests/run-make-fulldeps/simple-dylib/foo.rs
+++ b/tests/run-make/simple-dylib/foo.rs
diff --git a/tests/run-make-fulldeps/simple-rlib/Makefile b/tests/run-make/simple-rlib/Makefile
index d912b8a7bab..28df61a1547 100644
--- a/tests/run-make-fulldeps/simple-rlib/Makefile
+++ b/tests/run-make/simple-rlib/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 all:
 	$(RUSTC) bar.rs --crate-type=rlib
diff --git a/tests/run-make-fulldeps/simple-rlib/bar.rs b/tests/run-make/simple-rlib/bar.rs
index c5c0bc606cd..c5c0bc606cd 100644
--- a/tests/run-make-fulldeps/simple-rlib/bar.rs
+++ b/tests/run-make/simple-rlib/bar.rs
diff --git a/tests/run-make-fulldeps/simple-rlib/foo.rs b/tests/run-make/simple-rlib/foo.rs
index 8d68535e3b6..8d68535e3b6 100644
--- a/tests/run-make-fulldeps/simple-rlib/foo.rs
+++ b/tests/run-make/simple-rlib/foo.rs
diff --git a/tests/run-make-fulldeps/split-debuginfo/Makefile b/tests/run-make/split-debuginfo/Makefile
index 44cda0d3d11..71e014c1f71 100644
--- a/tests/run-make-fulldeps/split-debuginfo/Makefile
+++ b/tests/run-make/split-debuginfo/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: off packed unpacked
diff --git a/tests/run-make-fulldeps/split-debuginfo/bar.rs b/tests/run-make/split-debuginfo/bar.rs
index 07dd0715252..07dd0715252 100644
--- a/tests/run-make-fulldeps/split-debuginfo/bar.rs
+++ b/tests/run-make/split-debuginfo/bar.rs
diff --git a/tests/run-make-fulldeps/split-debuginfo/baz.rs b/tests/run-make/split-debuginfo/baz.rs
index 8b1a393741c..8b1a393741c 100644
--- a/tests/run-make-fulldeps/split-debuginfo/baz.rs
+++ b/tests/run-make/split-debuginfo/baz.rs
diff --git a/tests/run-make-fulldeps/split-debuginfo/foo.rs b/tests/run-make/split-debuginfo/foo.rs
index b058e540862..b058e540862 100644
--- a/tests/run-make-fulldeps/split-debuginfo/foo.rs
+++ b/tests/run-make/split-debuginfo/foo.rs
diff --git a/tests/run-make-fulldeps/split-debuginfo/main.rs b/tests/run-make/split-debuginfo/main.rs
index 21fa16e40a4..21fa16e40a4 100644
--- a/tests/run-make-fulldeps/split-debuginfo/main.rs
+++ b/tests/run-make/split-debuginfo/main.rs
diff --git a/tests/run-make-fulldeps/stable-symbol-names/Makefile b/tests/run-make/stable-symbol-names/Makefile
index bbfb8e38881..bbfb8e38881 100644
--- a/tests/run-make-fulldeps/stable-symbol-names/Makefile
+++ b/tests/run-make/stable-symbol-names/Makefile
diff --git a/tests/run-make-fulldeps/stable-symbol-names/stable-symbol-names1.rs b/tests/run-make/stable-symbol-names/stable-symbol-names1.rs
index b85a428278c..b85a428278c 100644
--- a/tests/run-make-fulldeps/stable-symbol-names/stable-symbol-names1.rs
+++ b/tests/run-make/stable-symbol-names/stable-symbol-names1.rs
diff --git a/tests/run-make-fulldeps/stable-symbol-names/stable-symbol-names2.rs b/tests/run-make/stable-symbol-names/stable-symbol-names2.rs
index 33df9d6c689..33df9d6c689 100644
--- a/tests/run-make-fulldeps/stable-symbol-names/stable-symbol-names2.rs
+++ b/tests/run-make/stable-symbol-names/stable-symbol-names2.rs
diff --git a/tests/run-make-fulldeps/static-dylib-by-default/Makefile b/tests/run-make/static-dylib-by-default/Makefile
index eedd0b32092..cdaab42d06c 100644
--- a/tests/run-make-fulldeps/static-dylib-by-default/Makefile
+++ b/tests/run-make/static-dylib-by-default/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 TO_LINK := $(call DYLIB,bar)
diff --git a/tests/run-make-fulldeps/static-dylib-by-default/bar.rs b/tests/run-make/static-dylib-by-default/bar.rs
index 14421165e2d..14421165e2d 100644
--- a/tests/run-make-fulldeps/static-dylib-by-default/bar.rs
+++ b/tests/run-make/static-dylib-by-default/bar.rs
diff --git a/tests/run-make-fulldeps/static-dylib-by-default/foo.rs b/tests/run-make/static-dylib-by-default/foo.rs
index 7ebec872055..7ebec872055 100644
--- a/tests/run-make-fulldeps/static-dylib-by-default/foo.rs
+++ b/tests/run-make/static-dylib-by-default/foo.rs
diff --git a/tests/run-make-fulldeps/static-dylib-by-default/main.c b/tests/run-make/static-dylib-by-default/main.c
index 5f7f2c27cd3..5f7f2c27cd3 100644
--- a/tests/run-make-fulldeps/static-dylib-by-default/main.c
+++ b/tests/run-make/static-dylib-by-default/main.c
diff --git a/tests/run-make-fulldeps/static-extern-type/Makefile b/tests/run-make/static-extern-type/Makefile
index e9aa95e63a0..77897154322 100644
--- a/tests/run-make-fulldeps/static-extern-type/Makefile
+++ b/tests/run-make/static-extern-type/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all: $(call NATIVE_STATICLIB,define-foo)
diff --git a/tests/run-make-fulldeps/static-extern-type/define-foo.c b/tests/run-make/static-extern-type/define-foo.c
index 39be5acfa11..39be5acfa11 100644
--- a/tests/run-make-fulldeps/static-extern-type/define-foo.c
+++ b/tests/run-make/static-extern-type/define-foo.c
diff --git a/tests/run-make-fulldeps/static-extern-type/use-foo.rs b/tests/run-make/static-extern-type/use-foo.rs
index 932b5b5944b..932b5b5944b 100644
--- a/tests/run-make-fulldeps/static-extern-type/use-foo.rs
+++ b/tests/run-make/static-extern-type/use-foo.rs
diff --git a/tests/run-make/static-pie/Makefile b/tests/run-make/static-pie/Makefile
index f4e6adf1b18..19c041d9428 100644
--- a/tests/run-make/static-pie/Makefile
+++ b/tests/run-make/static-pie/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # only-x86_64
 # only-linux
diff --git a/tests/run-make-fulldeps/static-unwinding/Makefile b/tests/run-make/static-unwinding/Makefile
index 9c755d4ab18..dec94fb16f4 100644
--- a/tests/run-make-fulldeps/static-unwinding/Makefile
+++ b/tests/run-make/static-unwinding/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/static-unwinding/lib.rs b/tests/run-make/static-unwinding/lib.rs
index 3fb1117a110..3fb1117a110 100644
--- a/tests/run-make-fulldeps/static-unwinding/lib.rs
+++ b/tests/run-make/static-unwinding/lib.rs
diff --git a/tests/run-make-fulldeps/static-unwinding/main.rs b/tests/run-make/static-unwinding/main.rs
index 0c66ea1aa07..0c66ea1aa07 100644
--- a/tests/run-make-fulldeps/static-unwinding/main.rs
+++ b/tests/run-make/static-unwinding/main.rs
diff --git a/tests/run-make-fulldeps/staticlib-blank-lib/Makefile b/tests/run-make/staticlib-blank-lib/Makefile
index fcbf87758fb..fcbf87758fb 100644
--- a/tests/run-make-fulldeps/staticlib-blank-lib/Makefile
+++ b/tests/run-make/staticlib-blank-lib/Makefile
diff --git a/tests/run-make-fulldeps/staticlib-blank-lib/foo.rs b/tests/run-make/staticlib-blank-lib/foo.rs
index bf48d069da9..bf48d069da9 100644
--- a/tests/run-make-fulldeps/staticlib-blank-lib/foo.rs
+++ b/tests/run-make/staticlib-blank-lib/foo.rs
diff --git a/tests/run-make-fulldeps/std-core-cycle/Makefile b/tests/run-make/std-core-cycle/Makefile
index 4f252863767..5ed6be905df 100644
--- a/tests/run-make-fulldeps/std-core-cycle/Makefile
+++ b/tests/run-make/std-core-cycle/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 ifeq ($(UNAME),Darwin)
diff --git a/tests/run-make-fulldeps/std-core-cycle/bar.rs b/tests/run-make/std-core-cycle/bar.rs
index 9f5e7c29bdd..9f5e7c29bdd 100644
--- a/tests/run-make-fulldeps/std-core-cycle/bar.rs
+++ b/tests/run-make/std-core-cycle/bar.rs
diff --git a/tests/run-make-fulldeps/std-core-cycle/foo.rs b/tests/run-make/std-core-cycle/foo.rs
index 6aa6e1ac3c5..6aa6e1ac3c5 100644
--- a/tests/run-make-fulldeps/std-core-cycle/foo.rs
+++ b/tests/run-make/std-core-cycle/foo.rs
diff --git a/tests/run-make-fulldeps/stdin-non-utf8/Makefile b/tests/run-make/stdin-non-utf8/Makefile
index 709d4cf1408..709d4cf1408 100644
--- a/tests/run-make-fulldeps/stdin-non-utf8/Makefile
+++ b/tests/run-make/stdin-non-utf8/Makefile
diff --git a/tests/run-make-fulldeps/stdin-non-utf8/non-utf8 b/tests/run-make/stdin-non-utf8/non-utf8
index bc87051a852..bc87051a852 100644
--- a/tests/run-make-fulldeps/stdin-non-utf8/non-utf8
+++ b/tests/run-make/stdin-non-utf8/non-utf8
diff --git a/tests/run-make-fulldeps/suspicious-library/Makefile b/tests/run-make/suspicious-library/Makefile
index 2af9e85c228..3b5ab3c53a5 100644
--- a/tests/run-make-fulldeps/suspicious-library/Makefile
+++ b/tests/run-make/suspicious-library/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/suspicious-library/bar.rs b/tests/run-make/suspicious-library/bar.rs
index 550c94cd0c6..550c94cd0c6 100644
--- a/tests/run-make-fulldeps/suspicious-library/bar.rs
+++ b/tests/run-make/suspicious-library/bar.rs
diff --git a/tests/run-make-fulldeps/suspicious-library/foo.rs b/tests/run-make/suspicious-library/foo.rs
index a382d8f2c7f..a382d8f2c7f 100644
--- a/tests/run-make-fulldeps/suspicious-library/foo.rs
+++ b/tests/run-make/suspicious-library/foo.rs
diff --git a/tests/run-make-fulldeps/symbol-visibility/Makefile b/tests/run-make/symbol-visibility/Makefile
index 17052ef4e63..9159af214ca 100644
--- a/tests/run-make-fulldeps/symbol-visibility/Makefile
+++ b/tests/run-make/symbol-visibility/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # ignore-windows-msvc
diff --git a/tests/run-make-fulldeps/symbol-visibility/a_cdylib.rs b/tests/run-make/symbol-visibility/a_cdylib.rs
index d4fbff85bfe..d4fbff85bfe 100644
--- a/tests/run-make-fulldeps/symbol-visibility/a_cdylib.rs
+++ b/tests/run-make/symbol-visibility/a_cdylib.rs
diff --git a/tests/run-make-fulldeps/symbol-visibility/a_proc_macro.rs b/tests/run-make/symbol-visibility/a_proc_macro.rs
index 9fd1a8a6717..9fd1a8a6717 100644
--- a/tests/run-make-fulldeps/symbol-visibility/a_proc_macro.rs
+++ b/tests/run-make/symbol-visibility/a_proc_macro.rs
diff --git a/tests/run-make-fulldeps/symbol-visibility/a_rust_dylib.rs b/tests/run-make/symbol-visibility/a_rust_dylib.rs
index a47df0ab7ee..a47df0ab7ee 100644
--- a/tests/run-make-fulldeps/symbol-visibility/a_rust_dylib.rs
+++ b/tests/run-make/symbol-visibility/a_rust_dylib.rs
diff --git a/tests/run-make-fulldeps/symbol-visibility/an_executable.rs b/tests/run-make/symbol-visibility/an_executable.rs
index 3f5e125ad19..3f5e125ad19 100644
--- a/tests/run-make-fulldeps/symbol-visibility/an_executable.rs
+++ b/tests/run-make/symbol-visibility/an_executable.rs
diff --git a/tests/run-make-fulldeps/symbol-visibility/an_rlib.rs b/tests/run-make/symbol-visibility/an_rlib.rs
index 3696422b11e..3696422b11e 100644
--- a/tests/run-make-fulldeps/symbol-visibility/an_rlib.rs
+++ b/tests/run-make/symbol-visibility/an_rlib.rs
diff --git a/tests/run-make-fulldeps/symbols-include-type-name/Makefile b/tests/run-make/symbols-include-type-name/Makefile
index ac26a852e36..ac26a852e36 100644
--- a/tests/run-make-fulldeps/symbols-include-type-name/Makefile
+++ b/tests/run-make/symbols-include-type-name/Makefile
diff --git a/tests/run-make-fulldeps/symbols-include-type-name/lib.rs b/tests/run-make/symbols-include-type-name/lib.rs
index 37d44591767..37d44591767 100644
--- a/tests/run-make-fulldeps/symbols-include-type-name/lib.rs
+++ b/tests/run-make/symbols-include-type-name/lib.rs
diff --git a/tests/run-make-fulldeps/symlinked-extern/Makefile b/tests/run-make/symlinked-extern/Makefile
index 058f43e857a..28c764b84e8 100644
--- a/tests/run-make-fulldeps/symlinked-extern/Makefile
+++ b/tests/run-make/symlinked-extern/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # ignore-windows
diff --git a/tests/run-make-fulldeps/symlinked-extern/bar.rs b/tests/run-make/symlinked-extern/bar.rs
index cd9c959d5e6..cd9c959d5e6 100644
--- a/tests/run-make-fulldeps/symlinked-extern/bar.rs
+++ b/tests/run-make/symlinked-extern/bar.rs
diff --git a/tests/run-make-fulldeps/symlinked-extern/baz.rs b/tests/run-make/symlinked-extern/baz.rs
index cd433a3ac7a..cd433a3ac7a 100644
--- a/tests/run-make-fulldeps/symlinked-extern/baz.rs
+++ b/tests/run-make/symlinked-extern/baz.rs
diff --git a/tests/run-make-fulldeps/symlinked-extern/foo.rs b/tests/run-make/symlinked-extern/foo.rs
index c00700b8cf8..c00700b8cf8 100644
--- a/tests/run-make-fulldeps/symlinked-extern/foo.rs
+++ b/tests/run-make/symlinked-extern/foo.rs
diff --git a/tests/run-make-fulldeps/symlinked-libraries/Makefile b/tests/run-make/symlinked-libraries/Makefile
index 576bf7e54be..fb0b6127e6f 100644
--- a/tests/run-make-fulldeps/symlinked-libraries/Makefile
+++ b/tests/run-make/symlinked-libraries/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # ignore-windows
diff --git a/tests/run-make-fulldeps/symlinked-libraries/bar.rs b/tests/run-make/symlinked-libraries/bar.rs
index fde0d746634..fde0d746634 100644
--- a/tests/run-make-fulldeps/symlinked-libraries/bar.rs
+++ b/tests/run-make/symlinked-libraries/bar.rs
diff --git a/tests/run-make-fulldeps/symlinked-libraries/foo.rs b/tests/run-make/symlinked-libraries/foo.rs
index cde9e291b45..cde9e291b45 100644
--- a/tests/run-make-fulldeps/symlinked-libraries/foo.rs
+++ b/tests/run-make/symlinked-libraries/foo.rs
diff --git a/tests/run-make-fulldeps/symlinked-rlib/Makefile b/tests/run-make/symlinked-rlib/Makefile
index 49d3f220a35..a8565f683c3 100644
--- a/tests/run-make-fulldeps/symlinked-rlib/Makefile
+++ b/tests/run-make/symlinked-rlib/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 # ignore-windows
diff --git a/tests/run-make-fulldeps/symlinked-rlib/bar.rs b/tests/run-make/symlinked-rlib/bar.rs
index fde0d746634..fde0d746634 100644
--- a/tests/run-make-fulldeps/symlinked-rlib/bar.rs
+++ b/tests/run-make/symlinked-rlib/bar.rs
diff --git a/tests/run-make-fulldeps/symlinked-rlib/foo.rs b/tests/run-make/symlinked-rlib/foo.rs
index c5c0bc606cd..c5c0bc606cd 100644
--- a/tests/run-make-fulldeps/symlinked-rlib/foo.rs
+++ b/tests/run-make/symlinked-rlib/foo.rs
diff --git a/tests/run-make-fulldeps/sysroot-crates-are-unstable/Makefile b/tests/run-make/sysroot-crates-are-unstable/Makefile
index 1e267fb9576..1e267fb9576 100644
--- a/tests/run-make-fulldeps/sysroot-crates-are-unstable/Makefile
+++ b/tests/run-make/sysroot-crates-are-unstable/Makefile
diff --git a/tests/run-make-fulldeps/sysroot-crates-are-unstable/test.py b/tests/run-make/sysroot-crates-are-unstable/test.py
index cb77eb34fef..cab4faa4e64 100644
--- a/tests/run-make-fulldeps/sysroot-crates-are-unstable/test.py
+++ b/tests/run-make/sysroot-crates-are-unstable/test.py
@@ -43,6 +43,7 @@ def check_lib(lib):
         return True
     print('verifying if {} is an unstable crate'.format(lib['name']))
     stdout, stderr = exec_command([os.environ['RUSTC'], '-', '--crate-type', 'rlib',
+                                   '--target', os.environ['TARGET'],
                                    '--extern', '{}={}'.format(lib['name'], lib['path'])],
                                   to_input=('extern crate {};'.format(lib['name'])).encode('utf-8'))
     if not 'use of unstable library feature' in '{}{}'.format(stdout, stderr):
diff --git a/tests/run-make-fulldeps/target-cpu-native/Makefile b/tests/run-make/target-cpu-native/Makefile
index eb3ca1e13aa..eb3ca1e13aa 100644
--- a/tests/run-make-fulldeps/target-cpu-native/Makefile
+++ b/tests/run-make/target-cpu-native/Makefile
diff --git a/tests/run-make-fulldeps/target-cpu-native/foo.rs b/tests/run-make/target-cpu-native/foo.rs
index f79c691f085..f79c691f085 100644
--- a/tests/run-make-fulldeps/target-cpu-native/foo.rs
+++ b/tests/run-make/target-cpu-native/foo.rs
diff --git a/tests/run-make-fulldeps/target-specs/Makefile b/tests/run-make/target-specs/Makefile
index a33f5368e3c..a33f5368e3c 100644
--- a/tests/run-make-fulldeps/target-specs/Makefile
+++ b/tests/run-make/target-specs/Makefile
diff --git a/tests/run-make-fulldeps/target-specs/definitely-not-builtin-target.json b/tests/run-make/target-specs/definitely-not-builtin-target.json
index b36fa993d97..b36fa993d97 100644
--- a/tests/run-make-fulldeps/target-specs/definitely-not-builtin-target.json
+++ b/tests/run-make/target-specs/definitely-not-builtin-target.json
diff --git a/tests/run-make-fulldeps/target-specs/foo.rs b/tests/run-make/target-specs/foo.rs
index 22939e87912..22939e87912 100644
--- a/tests/run-make-fulldeps/target-specs/foo.rs
+++ b/tests/run-make/target-specs/foo.rs
diff --git a/tests/run-make-fulldeps/target-specs/mismatching-data-layout.json b/tests/run-make/target-specs/mismatching-data-layout.json
index d12caaad14a..d12caaad14a 100644
--- a/tests/run-make-fulldeps/target-specs/mismatching-data-layout.json
+++ b/tests/run-make/target-specs/mismatching-data-layout.json
diff --git a/tests/run-make-fulldeps/target-specs/my-awesome-platform.json b/tests/run-make/target-specs/my-awesome-platform.json
index 00de3de05f0..00de3de05f0 100644
--- a/tests/run-make-fulldeps/target-specs/my-awesome-platform.json
+++ b/tests/run-make/target-specs/my-awesome-platform.json
diff --git a/tests/run-make-fulldeps/target-specs/my-incomplete-platform.json b/tests/run-make/target-specs/my-incomplete-platform.json
index ceaa25cdf2f..ceaa25cdf2f 100644
--- a/tests/run-make-fulldeps/target-specs/my-incomplete-platform.json
+++ b/tests/run-make/target-specs/my-incomplete-platform.json
diff --git a/tests/run-make-fulldeps/target-specs/my-invalid-platform.json b/tests/run-make/target-specs/my-invalid-platform.json
index 3feac45b7d6..3feac45b7d6 100644
--- a/tests/run-make-fulldeps/target-specs/my-invalid-platform.json
+++ b/tests/run-make/target-specs/my-invalid-platform.json
diff --git a/tests/run-make-fulldeps/target-specs/my-x86_64-unknown-linux-gnu-platform.json b/tests/run-make/target-specs/my-x86_64-unknown-linux-gnu-platform.json
index 6d5e964ed4f..6d5e964ed4f 100644
--- a/tests/run-make-fulldeps/target-specs/my-x86_64-unknown-linux-gnu-platform.json
+++ b/tests/run-make/target-specs/my-x86_64-unknown-linux-gnu-platform.json
diff --git a/tests/run-make-fulldeps/target-without-atomic-cas/Makefile b/tests/run-make/target-without-atomic-cas/Makefile
index 451f03d66cd..451f03d66cd 100644
--- a/tests/run-make-fulldeps/target-without-atomic-cas/Makefile
+++ b/tests/run-make/target-without-atomic-cas/Makefile
diff --git a/tests/run-make/test-benches/Makefile b/tests/run-make/test-benches/Makefile
index 8fc122515d0..0253a52637f 100644
--- a/tests/run-make/test-benches/Makefile
+++ b/tests/run-make/test-benches/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # ignore-cross-compile
 
diff --git a/tests/run-make-fulldeps/test-harness/Makefile b/tests/run-make/test-harness/Makefile
index 1fe059b07d2..ee8c9294f91 100644
--- a/tests/run-make-fulldeps/test-harness/Makefile
+++ b/tests/run-make/test-harness/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/test-harness/test-ignore-cfg.rs b/tests/run-make/test-harness/test-ignore-cfg.rs
index 31ef131f2ad..31ef131f2ad 100644
--- a/tests/run-make-fulldeps/test-harness/test-ignore-cfg.rs
+++ b/tests/run-make/test-harness/test-ignore-cfg.rs
diff --git a/tests/run-make/thumb-none-cortex-m/Makefile b/tests/run-make/thumb-none-cortex-m/Makefile
index 3065141c08a..e941fc4a78e 100644
--- a/tests/run-make/thumb-none-cortex-m/Makefile
+++ b/tests/run-make/thumb-none-cortex-m/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # How to run this
 # $ ./x.py clean
diff --git a/tests/run-make/thumb-none-qemu/Makefile b/tests/run-make/thumb-none-qemu/Makefile
index a1c2ba12cd0..eea6ca34992 100644
--- a/tests/run-make/thumb-none-qemu/Makefile
+++ b/tests/run-make/thumb-none-qemu/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # only-thumb
 
diff --git a/tests/run-make-fulldeps/tools.mk b/tests/run-make/tools.mk
index ea06b620c4c..ea06b620c4c 100644
--- a/tests/run-make-fulldeps/tools.mk
+++ b/tests/run-make/tools.mk
diff --git a/tests/run-make/track-path-dep-info/Makefile b/tests/run-make/track-path-dep-info/Makefile
index ee853943f8b..0d6c9b1d2f0 100644
--- a/tests/run-make/track-path-dep-info/Makefile
+++ b/tests/run-make/track-path-dep-info/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # FIXME(eddyb) provide `HOST_RUSTC` and `TARGET_RUSTC`
 # instead of hardcoding them everywhere they're needed.
diff --git a/tests/run-make/track-pgo-dep-info/Makefile b/tests/run-make/track-pgo-dep-info/Makefile
index 60b59c04aa9..6c7f67d0f0a 100644
--- a/tests/run-make/track-pgo-dep-info/Makefile
+++ b/tests/run-make/track-pgo-dep-info/Makefile
@@ -1,7 +1,7 @@
 # needs-profiler-support
 # ignore-windows-gnu
 
--include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # FIXME(eddyb) provide `HOST_RUSTC` and `TARGET_RUSTC`
 # instead of hardcoding them everywhere they're needed.
diff --git a/tests/run-make/translation/Makefile b/tests/run-make/translation/Makefile
index 397fc542909..0acf64e5da7 100644
--- a/tests/run-make/translation/Makefile
+++ b/tests/run-make/translation/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # This test uses `ln -s` rather than copying to save testing time, but its
 # usage doesn't work on Windows.
diff --git a/tests/run-make-fulldeps/type-mismatch-same-crate-name/Makefile b/tests/run-make/type-mismatch-same-crate-name/Makefile
index a2a2a41c7a5..a2a2a41c7a5 100644
--- a/tests/run-make-fulldeps/type-mismatch-same-crate-name/Makefile
+++ b/tests/run-make/type-mismatch-same-crate-name/Makefile
diff --git a/tests/run-make-fulldeps/type-mismatch-same-crate-name/crateA.rs b/tests/run-make/type-mismatch-same-crate-name/crateA.rs
index 4871c8c2e9c..4871c8c2e9c 100644
--- a/tests/run-make-fulldeps/type-mismatch-same-crate-name/crateA.rs
+++ b/tests/run-make/type-mismatch-same-crate-name/crateA.rs
diff --git a/tests/run-make-fulldeps/type-mismatch-same-crate-name/crateB.rs b/tests/run-make/type-mismatch-same-crate-name/crateB.rs
index 24fcc7cadc1..24fcc7cadc1 100644
--- a/tests/run-make-fulldeps/type-mismatch-same-crate-name/crateB.rs
+++ b/tests/run-make/type-mismatch-same-crate-name/crateB.rs
diff --git a/tests/run-make-fulldeps/type-mismatch-same-crate-name/crateC.rs b/tests/run-make/type-mismatch-same-crate-name/crateC.rs
index 71b38a9f8ca..71b38a9f8ca 100644
--- a/tests/run-make-fulldeps/type-mismatch-same-crate-name/crateC.rs
+++ b/tests/run-make/type-mismatch-same-crate-name/crateC.rs
diff --git a/tests/run-make/unstable-flag-required/Makefile b/tests/run-make/unstable-flag-required/Makefile
index d3a734fae77..17dd15b079c 100644
--- a/tests/run-make/unstable-flag-required/Makefile
+++ b/tests/run-make/unstable-flag-required/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 all:
 	$(RUSTDOC) --output-format=json x.html 2>&1 | diff - output-format-json.stderr
diff --git a/tests/run-make-fulldeps/use-extern-for-plugins/Makefile b/tests/run-make/use-extern-for-plugins/Makefile
index 6ae53afad20..6ae53afad20 100644
--- a/tests/run-make-fulldeps/use-extern-for-plugins/Makefile
+++ b/tests/run-make/use-extern-for-plugins/Makefile
diff --git a/tests/run-make-fulldeps/use-extern-for-plugins/bar.rs b/tests/run-make/use-extern-for-plugins/bar.rs
index 704d2120362..704d2120362 100644
--- a/tests/run-make-fulldeps/use-extern-for-plugins/bar.rs
+++ b/tests/run-make/use-extern-for-plugins/bar.rs
diff --git a/tests/run-make-fulldeps/use-extern-for-plugins/baz.rs b/tests/run-make/use-extern-for-plugins/baz.rs
index 49a96a0c80b..49a96a0c80b 100644
--- a/tests/run-make-fulldeps/use-extern-for-plugins/baz.rs
+++ b/tests/run-make/use-extern-for-plugins/baz.rs
diff --git a/tests/run-make-fulldeps/use-extern-for-plugins/foo.rs b/tests/run-make/use-extern-for-plugins/foo.rs
index dffdc079887..dffdc079887 100644
--- a/tests/run-make-fulldeps/use-extern-for-plugins/foo.rs
+++ b/tests/run-make/use-extern-for-plugins/foo.rs
diff --git a/tests/run-make-fulldeps/use-suggestions-rust-2018/Makefile b/tests/run-make/use-suggestions-rust-2018/Makefile
index 37cd6283c0a..37cd6283c0a 100644
--- a/tests/run-make-fulldeps/use-suggestions-rust-2018/Makefile
+++ b/tests/run-make/use-suggestions-rust-2018/Makefile
diff --git a/tests/run-make-fulldeps/use-suggestions-rust-2018/ep-nested-lib.rs b/tests/run-make/use-suggestions-rust-2018/ep-nested-lib.rs
index 62a0a9d8f1b..62a0a9d8f1b 100644
--- a/tests/run-make-fulldeps/use-suggestions-rust-2018/ep-nested-lib.rs
+++ b/tests/run-make/use-suggestions-rust-2018/ep-nested-lib.rs
diff --git a/tests/run-make-fulldeps/use-suggestions-rust-2018/use-suggestions.rs b/tests/run-make/use-suggestions-rust-2018/use-suggestions.rs
index d262d6f9877..d262d6f9877 100644
--- a/tests/run-make-fulldeps/use-suggestions-rust-2018/use-suggestions.rs
+++ b/tests/run-make/use-suggestions-rust-2018/use-suggestions.rs
diff --git a/tests/run-make-fulldeps/used-cdylib-macos/Makefile b/tests/run-make/used-cdylib-macos/Makefile
index 38a4c31c7b3..38a4c31c7b3 100644
--- a/tests/run-make-fulldeps/used-cdylib-macos/Makefile
+++ b/tests/run-make/used-cdylib-macos/Makefile
diff --git a/tests/run-make-fulldeps/used-cdylib-macos/dylib_used.rs b/tests/run-make/used-cdylib-macos/dylib_used.rs
index 85f0ff92fe7..85f0ff92fe7 100644
--- a/tests/run-make-fulldeps/used-cdylib-macos/dylib_used.rs
+++ b/tests/run-make/used-cdylib-macos/dylib_used.rs
diff --git a/tests/run-make-fulldeps/used/Makefile b/tests/run-make/used/Makefile
index e80eb9e4020..e80eb9e4020 100644
--- a/tests/run-make-fulldeps/used/Makefile
+++ b/tests/run-make/used/Makefile
diff --git a/tests/run-make-fulldeps/used/used.rs b/tests/run-make/used/used.rs
index dca0a5e1167..dca0a5e1167 100644
--- a/tests/run-make-fulldeps/used/used.rs
+++ b/tests/run-make/used/used.rs
diff --git a/tests/run-make/valid-print-requests/Makefile b/tests/run-make/valid-print-requests/Makefile
index c325e536e7c..99430e98d1c 100644
--- a/tests/run-make/valid-print-requests/Makefile
+++ b/tests/run-make/valid-print-requests/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 all:
 	$(RUSTC) --print uwu 2>&1 | diff - valid-print-requests.stderr
diff --git a/tests/run-make-fulldeps/version/Makefile b/tests/run-make/version/Makefile
index 3a130545d69..3a130545d69 100644
--- a/tests/run-make-fulldeps/version/Makefile
+++ b/tests/run-make/version/Makefile
diff --git a/tests/run-make-fulldeps/volatile-intrinsics/Makefile b/tests/run-make/volatile-intrinsics/Makefile
index 2a78c7b9cfe..5672a045873 100644
--- a/tests/run-make-fulldeps/volatile-intrinsics/Makefile
+++ b/tests/run-make/volatile-intrinsics/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/volatile-intrinsics/main.rs b/tests/run-make/volatile-intrinsics/main.rs
index 4295d95f3f3..4295d95f3f3 100644
--- a/tests/run-make-fulldeps/volatile-intrinsics/main.rs
+++ b/tests/run-make/volatile-intrinsics/main.rs
diff --git a/tests/run-make/wasm-abi/Makefile b/tests/run-make/wasm-abi/Makefile
index e713ca1876d..ed95464efef 100644
--- a/tests/run-make/wasm-abi/Makefile
+++ b/tests/run-make/wasm-abi/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # only-wasm32-bare
 
diff --git a/tests/run-make/wasm-custom-section/Makefile b/tests/run-make/wasm-custom-section/Makefile
index 92b0802e30a..2f7d38c2736 100644
--- a/tests/run-make/wasm-custom-section/Makefile
+++ b/tests/run-make/wasm-custom-section/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # only-wasm32-bare
 
diff --git a/tests/run-make/wasm-custom-sections-opt/Makefile b/tests/run-make/wasm-custom-sections-opt/Makefile
index e5b45d96310..a0d4378131b 100644
--- a/tests/run-make/wasm-custom-sections-opt/Makefile
+++ b/tests/run-make/wasm-custom-sections-opt/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # only-wasm32-bare
 
diff --git a/tests/run-make/wasm-export-all-symbols/Makefile b/tests/run-make/wasm-export-all-symbols/Makefile
index 834f4d258db..86713bc80b8 100644
--- a/tests/run-make/wasm-export-all-symbols/Makefile
+++ b/tests/run-make/wasm-export-all-symbols/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # only-wasm32-bare
 
diff --git a/tests/run-make/wasm-import-module/Makefile b/tests/run-make/wasm-import-module/Makefile
index 18cef16aac3..a0b4d920b3d 100644
--- a/tests/run-make/wasm-import-module/Makefile
+++ b/tests/run-make/wasm-import-module/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
  # only-wasm32-bare
 
diff --git a/tests/run-make/wasm-panic-small/Makefile b/tests/run-make/wasm-panic-small/Makefile
index 2af9f71357e..16f54521855 100644
--- a/tests/run-make/wasm-panic-small/Makefile
+++ b/tests/run-make/wasm-panic-small/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # only-wasm32-bare
 
diff --git a/tests/run-make/wasm-spurious-import/Makefile b/tests/run-make/wasm-spurious-import/Makefile
index 6f50e6e554e..ff9dfeac6d0 100644
--- a/tests/run-make/wasm-spurious-import/Makefile
+++ b/tests/run-make/wasm-spurious-import/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # only-wasm32-bare
 
diff --git a/tests/run-make/wasm-stringify-ints-small/Makefile b/tests/run-make/wasm-stringify-ints-small/Makefile
index 2fa2c954d4a..f959dbd426b 100644
--- a/tests/run-make/wasm-stringify-ints-small/Makefile
+++ b/tests/run-make/wasm-stringify-ints-small/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 ifeq ($(TARGET),wasm32-unknown-unknown)
 all:
diff --git a/tests/run-make/wasm-symbols-different-module/Makefile b/tests/run-make/wasm-symbols-different-module/Makefile
index 9e657222dea..0f86914c7b1 100644
--- a/tests/run-make/wasm-symbols-different-module/Makefile
+++ b/tests/run-make/wasm-symbols-different-module/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # only-wasm32-bare
 
diff --git a/tests/run-make/wasm-symbols-not-exported/Makefile b/tests/run-make/wasm-symbols-not-exported/Makefile
index 60b0dee001f..024ad779748 100644
--- a/tests/run-make/wasm-symbols-not-exported/Makefile
+++ b/tests/run-make/wasm-symbols-not-exported/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # only-wasm32-bare
 
diff --git a/tests/run-make/wasm-symbols-not-imported/Makefile b/tests/run-make/wasm-symbols-not-imported/Makefile
index dc7618c19a7..38440a8b025 100644
--- a/tests/run-make/wasm-symbols-not-imported/Makefile
+++ b/tests/run-make/wasm-symbols-not-imported/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 # only-wasm32-bare
 
diff --git a/tests/run-make-fulldeps/weird-output-filenames/Makefile b/tests/run-make/weird-output-filenames/Makefile
index d3a34e3b46e..d3a34e3b46e 100644
--- a/tests/run-make-fulldeps/weird-output-filenames/Makefile
+++ b/tests/run-make/weird-output-filenames/Makefile
diff --git a/tests/run-make-fulldeps/weird-output-filenames/foo.rs b/tests/run-make/weird-output-filenames/foo.rs
index f328e4d9d04..f328e4d9d04 100644
--- a/tests/run-make-fulldeps/weird-output-filenames/foo.rs
+++ b/tests/run-make/weird-output-filenames/foo.rs
diff --git a/tests/run-make-fulldeps/windows-binary-no-external-deps/Makefile b/tests/run-make/windows-binary-no-external-deps/Makefile
index 8960020fed5..8960020fed5 100644
--- a/tests/run-make-fulldeps/windows-binary-no-external-deps/Makefile
+++ b/tests/run-make/windows-binary-no-external-deps/Makefile
diff --git a/tests/run-make-fulldeps/windows-binary-no-external-deps/hello.rs b/tests/run-make/windows-binary-no-external-deps/hello.rs
index 47ad8c63411..47ad8c63411 100644
--- a/tests/run-make-fulldeps/windows-binary-no-external-deps/hello.rs
+++ b/tests/run-make/windows-binary-no-external-deps/hello.rs
diff --git a/tests/run-make-fulldeps/windows-spawn/Makefile b/tests/run-make/windows-spawn/Makefile
index b6cdb169bab..b6cdb169bab 100644
--- a/tests/run-make-fulldeps/windows-spawn/Makefile
+++ b/tests/run-make/windows-spawn/Makefile
diff --git a/tests/run-make-fulldeps/windows-spawn/hello.rs b/tests/run-make/windows-spawn/hello.rs
index 47ad8c63411..47ad8c63411 100644
--- a/tests/run-make-fulldeps/windows-spawn/hello.rs
+++ b/tests/run-make/windows-spawn/hello.rs
diff --git a/tests/run-make-fulldeps/windows-spawn/spawn.rs b/tests/run-make/windows-spawn/spawn.rs
index c34da3d5fde..c34da3d5fde 100644
--- a/tests/run-make-fulldeps/windows-spawn/spawn.rs
+++ b/tests/run-make/windows-spawn/spawn.rs
diff --git a/tests/run-make-fulldeps/windows-subsystem/Makefile b/tests/run-make/windows-subsystem/Makefile
index 78c4e2ac1e8..e3cf9181de4 100644
--- a/tests/run-make-fulldeps/windows-subsystem/Makefile
+++ b/tests/run-make/windows-subsystem/Makefile
@@ -1,3 +1,4 @@
+# ignore-cross-compile
 include ../tools.mk
 
 all:
diff --git a/tests/run-make-fulldeps/windows-subsystem/console.rs b/tests/run-make/windows-subsystem/console.rs
index 61a92eb6a9d..61a92eb6a9d 100644
--- a/tests/run-make-fulldeps/windows-subsystem/console.rs
+++ b/tests/run-make/windows-subsystem/console.rs
diff --git a/tests/run-make-fulldeps/windows-subsystem/windows.rs b/tests/run-make/windows-subsystem/windows.rs
index 1138248f07d..1138248f07d 100644
--- a/tests/run-make-fulldeps/windows-subsystem/windows.rs
+++ b/tests/run-make/windows-subsystem/windows.rs
diff --git a/tests/run-make/x86_64-fortanix-unknown-sgx-lvi/Makefile b/tests/run-make/x86_64-fortanix-unknown-sgx-lvi/Makefile
index 84dcd239351..3c88ec34f43 100644
--- a/tests/run-make/x86_64-fortanix-unknown-sgx-lvi/Makefile
+++ b/tests/run-make/x86_64-fortanix-unknown-sgx-lvi/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+include ../tools.mk
 
 #only-x86_64-fortanix-unknown-sgx
 
diff --git a/tests/rustdoc-gui/go-to-collapsed-elem.goml b/tests/rustdoc-gui/go-to-collapsed-elem.goml
new file mode 100644
index 00000000000..279048e37c1
--- /dev/null
+++ b/tests/rustdoc-gui/go-to-collapsed-elem.goml
@@ -0,0 +1,21 @@
+// This test ensures that when clicking on a link which leads to an item inside a collapsed element,
+// the collapsed element will be expanded.
+goto: "file://" + |DOC_PATH| + "/test_docs/struct.Foo.html"
+// We check that the implementors block is expanded.
+assert-property: ("#implementations-list .implementors-toggle", {"open": "true"})
+// We now collapse the implementors block.
+property: ("#implementations-list .implementors-toggle", {"open": "false"})
+// And now we click on the link to the method to ensure it'll expand the implementors block.
+click: "//*[@class='sidebar']//a[@href='#method.must_use']"
+assert-property: ("#implementations-list .implementors-toggle", {"open": "true"})
+
+// Now we do the same through search result.
+// First we reload the page without the anchor in the URL.
+goto: "file://" + |DOC_PATH| + "/test_docs/struct.Foo.html"
+// Then we collapse the section again...
+property: ("#implementations-list .implementors-toggle", {"open": "false"})
+// Then we run the search.
+write: (".search-input", "foo::must_use")
+wait-for: "//*[@id='search']//a[@href='../test_docs/struct.Foo.html#method.must_use']"
+click: "//*[@id='search']//a[@href='../test_docs/struct.Foo.html#method.must_use']"
+assert-property: ("#implementations-list .implementors-toggle", {"open": "true"})
diff --git a/tests/rustdoc-json/impls/local_for_local_primitive.rs b/tests/rustdoc-json/impls/local_for_local_primitive.rs
index 38e7e2658df..8383dcc0482 100644
--- a/tests/rustdoc-json/impls/local_for_local_primitive.rs
+++ b/tests/rustdoc-json/impls/local_for_local_primitive.rs
@@ -1,5 +1,5 @@
 #![feature(no_core)]
-#![feature(rustdoc_internals)]
+#![feature(rustc_attrs)]
 #![no_core]
 
 // @set Local = "$.index[*][?(@.name=='Local')].id"
@@ -16,6 +16,6 @@ impl Local for bool {}
 
 // FIXME(#101695): Test bool's `impls` include "Local for bool"
 // @has "$.index[*][?(@.name=='bool')]"
-#[doc(primitive = "bool")]
+#[rustc_doc_primitive = "bool"]
 /// Boolean docs
 mod prim_bool {}
diff --git a/tests/rustdoc-json/primitives/local_primitive.rs b/tests/rustdoc-json/primitives/local_primitive.rs
index f27e6a2adec..0cf479faf29 100644
--- a/tests/rustdoc-json/primitives/local_primitive.rs
+++ b/tests/rustdoc-json/primitives/local_primitive.rs
@@ -8,7 +8,7 @@
 
 //! Link to [i32][prim@i32] [i64][prim@i64]
 
-#[doc(primitive = "i32")]
+#[rustc_doc_primitive = "i32"]
 mod prim_i32 {}
 
 // @set local_i32 = "$.index[*][?(@.name=='i32')].id"
diff --git a/tests/rustdoc-json/primitives/primitive_impls.rs b/tests/rustdoc-json/primitives/primitive_impls.rs
index 1fc9374065f..85d179ee45f 100644
--- a/tests/rustdoc-json/primitives/primitive_impls.rs
+++ b/tests/rustdoc-json/primitives/primitive_impls.rs
@@ -25,7 +25,7 @@ pub trait Trait {}
 impl Trait for i32 {}
 
 /// i32
-#[doc(primitive = "i32")]
+#[rustc_doc_primitive = "i32"]
 mod prim_i32 {}
 
 // @set i32 = "$.index[*][?(@.docs=='i32')].id"
diff --git a/tests/rustdoc-json/primitives/primitive_overloading.rs b/tests/rustdoc-json/primitives/primitive_overloading.rs
index 56b35cd14c0..81e0acdc6e9 100644
--- a/tests/rustdoc-json/primitives/primitive_overloading.rs
+++ b/tests/rustdoc-json/primitives/primitive_overloading.rs
@@ -2,7 +2,7 @@
 
 // Regression test for <https://github.com/rust-lang/rust/issues/98006>.
 
-#![feature(rustdoc_internals)]
+#![feature(rustc_attrs)]
 #![feature(no_core)]
 
 #![no_core]
@@ -10,7 +10,7 @@
 // @has "$.index[*][?(@.name=='usize')]"
 // @has "$.index[*][?(@.name=='prim')]"
 
-#[doc(primitive = "usize")]
+#[rustc_doc_primitive = "usize"]
 /// This is the built-in type `usize`.
 mod prim {
 }
diff --git a/tests/rustdoc-json/primitives/use_primitive.rs b/tests/rustdoc-json/primitives/use_primitive.rs
index e2292737462..5180a804f07 100644
--- a/tests/rustdoc-json/primitives/use_primitive.rs
+++ b/tests/rustdoc-json/primitives/use_primitive.rs
@@ -1,8 +1,8 @@
 // edition:2018
 
-#![feature(rustdoc_internals)]
+#![feature(rustc_attrs)]
 
-#[doc(primitive = "usize")]
+#[rustc_doc_primitive = "usize"]
 mod usize {}
 
 // @set local_crate_id = "$.index[*][?(@.name=='use_primitive')].crate_id"
diff --git a/tests/rustdoc-ui/c-help.stdout b/tests/rustdoc-ui/c-help.stdout
index 75b2e2a2a43..0bd2d73efee 100644
--- a/tests/rustdoc-ui/c-help.stdout
+++ b/tests/rustdoc-ui/c-help.stdout
@@ -3,7 +3,7 @@
     -C            codegen-units=val -- divide crate into N units to optimize in parallel
     -C       control-flow-guard=val -- use Windows Control Flow Guard (default: no)
     -C         debug-assertions=val -- explicitly enable the `cfg(debug_assertions)` directive
-    -C                debuginfo=val -- debug info emission level (0 = no debug info, 1 = line tables only, 2 = full debug info with variable and type information; default: 0)
+    -C                debuginfo=val -- debug info emission level (0-2, none, line-directives-only, line-tables-only, limited, or full; default: 0)
     -C default-linker-libraries=val -- allow the linker to link its default libraries (default: no)
     -C            embed-bitcode=val -- emit bitcode in rlibs (default: yes)
     -C           extra-filename=val -- extra data to put in each output filename
diff --git a/tests/rustdoc-ui/coverage/exotic.rs b/tests/rustdoc-ui/coverage/exotic.rs
index 72b70d6980b..f45405fbf5d 100644
--- a/tests/rustdoc-ui/coverage/exotic.rs
+++ b/tests/rustdoc-ui/coverage/exotic.rs
@@ -2,12 +2,13 @@
 // check-pass
 
 #![feature(rustdoc_internals)]
+#![feature(rustc_attrs)]
 
 //! the features only used in std also have entries in the table, so make sure those get pulled out
 //! properly as well
 
 /// woo, check it out, we can write our own primitive docs lol
-#[doc(primitive="unit")]
+#[rustc_doc_primitive = "unit"]
 mod prim_unit {}
 
 /// keywords? sure, pile them on
diff --git a/tests/rustdoc-ui/intra-doc/ambiguity.rs b/tests/rustdoc-ui/intra-doc/ambiguity.rs
index 1f3dc722eff..0290b858204 100644
--- a/tests/rustdoc-ui/intra-doc/ambiguity.rs
+++ b/tests/rustdoc-ui/intra-doc/ambiguity.rs
@@ -35,6 +35,6 @@ pub mod foo {
 /// Ambiguous non-implied shortcut link [`foo::bar`]. //~ERROR `foo::bar`
 pub struct Docs {}
 
-/// [true] //~ ERROR `true` is both a module and a builtin type
+/// [true] //~ ERROR `true` is both a module and a primitive type
 /// [primitive@true]
 pub mod r#true {}
diff --git a/tests/rustdoc-ui/intra-doc/ambiguity.stderr b/tests/rustdoc-ui/intra-doc/ambiguity.stderr
index 7974796e47b..47853e0b589 100644
--- a/tests/rustdoc-ui/intra-doc/ambiguity.stderr
+++ b/tests/rustdoc-ui/intra-doc/ambiguity.stderr
@@ -1,4 +1,4 @@
-error: `true` is both a module and a builtin type
+error: `true` is both a module and a primitive type
   --> $DIR/ambiguity.rs:38:6
    |
 LL | /// [true]
@@ -13,89 +13,89 @@ help: to link to the module, prefix with `mod@`
    |
 LL | /// [mod@true]
    |      ++++
-help: to link to the builtin type, prefix with `prim@`
+help: to link to the primitive type, prefix with `prim@`
    |
 LL | /// [prim@true]
    |      +++++
 
-error: `ambiguous` is both a struct and a function
+error: `ambiguous` is both a function and a struct
   --> $DIR/ambiguity.rs:27:7
    |
 LL | /// [`ambiguous`] is ambiguous.
    |       ^^^^^^^^^ ambiguous link
    |
-help: to link to the struct, prefix with `struct@`
-   |
-LL | /// [`struct@ambiguous`] is ambiguous.
-   |       +++++++
 help: to link to the function, add parentheses
    |
 LL | /// [`ambiguous()`] is ambiguous.
    |                ++
+help: to link to the struct, prefix with `struct@`
+   |
+LL | /// [`struct@ambiguous`] is ambiguous.
+   |       +++++++
 
-error: `ambiguous` is both a struct and a function
+error: `ambiguous` is both a function and a struct
   --> $DIR/ambiguity.rs:29:6
    |
 LL | /// [ambiguous] is ambiguous.
    |      ^^^^^^^^^ ambiguous link
    |
-help: to link to the struct, prefix with `struct@`
-   |
-LL | /// [struct@ambiguous] is ambiguous.
-   |      +++++++
 help: to link to the function, add parentheses
    |
 LL | /// [ambiguous()] is ambiguous.
    |               ++
+help: to link to the struct, prefix with `struct@`
+   |
+LL | /// [struct@ambiguous] is ambiguous.
+   |      +++++++
 
-error: `multi_conflict` is a struct, a function, and a macro
+error: `multi_conflict` is a function, a struct, and a macro
   --> $DIR/ambiguity.rs:31:7
    |
 LL | /// [`multi_conflict`] is a three-way conflict.
    |       ^^^^^^^^^^^^^^ ambiguous link
    |
-help: to link to the struct, prefix with `struct@`
-   |
-LL | /// [`struct@multi_conflict`] is a three-way conflict.
-   |       +++++++
 help: to link to the function, add parentheses
    |
 LL | /// [`multi_conflict()`] is a three-way conflict.
    |                     ++
+help: to link to the struct, prefix with `struct@`
+   |
+LL | /// [`struct@multi_conflict`] is a three-way conflict.
+   |       +++++++
 help: to link to the macro, add an exclamation mark
    |
 LL | /// [`multi_conflict!`] is a three-way conflict.
    |                     +
 
-error: `type_and_value` is both a module and a constant
+error: `type_and_value` is both a constant and a module
   --> $DIR/ambiguity.rs:33:16
    |
 LL | /// Ambiguous [type_and_value].
    |                ^^^^^^^^^^^^^^ ambiguous link
    |
-help: to link to the module, prefix with `mod@`
-   |
-LL | /// Ambiguous [mod@type_and_value].
-   |                ++++
 help: to link to the constant, prefix with `const@`
    |
 LL | /// Ambiguous [const@type_and_value].
    |                ++++++
+help: to link to the module, prefix with `mod@`
+   |
+LL | /// Ambiguous [mod@type_and_value].
+   |                ++++
 
-error: `foo::bar` is both an enum and a function
+error: `foo::bar` is both a function and an enum
   --> $DIR/ambiguity.rs:35:43
    |
 LL | /// Ambiguous non-implied shortcut link [`foo::bar`].
    |                                           ^^^^^^^^ ambiguous link
    |
-help: to link to the enum, prefix with `enum@`
-   |
-LL | /// Ambiguous non-implied shortcut link [`enum@foo::bar`].
-   |                                           +++++
 help: to link to the function, add parentheses
    |
 LL | /// Ambiguous non-implied shortcut link [`foo::bar()`].
    |                                                   ++
+help: to link to the enum, prefix with `enum@`
+   |
+LL | /// Ambiguous non-implied shortcut link [`enum@foo::bar`].
+   |                                           +++++
 
 error: aborting due to 6 previous errors
 
diff --git a/tests/rustdoc-ui/intra-doc/errors.rs b/tests/rustdoc-ui/intra-doc/errors.rs
index 95dd2b98e03..f37f49c24cc 100644
--- a/tests/rustdoc-ui/intra-doc/errors.rs
+++ b/tests/rustdoc-ui/intra-doc/errors.rs
@@ -54,11 +54,11 @@
 
 /// [u8::not_found]
 //~^ ERROR unresolved link
-//~| NOTE the builtin type `u8` has no associated item named `not_found`
+//~| NOTE the primitive type `u8` has no associated item named `not_found`
 
 /// [std::primitive::u8::not_found]
 //~^ ERROR unresolved link
-//~| NOTE the builtin type `u8` has no associated item named `not_found`
+//~| NOTE the primitive type `u8` has no associated item named `not_found`
 
 /// [type@Vec::into_iter]
 //~^ ERROR unresolved link
diff --git a/tests/rustdoc-ui/intra-doc/errors.stderr b/tests/rustdoc-ui/intra-doc/errors.stderr
index 1b2416d7da7..a982bba0095 100644
--- a/tests/rustdoc-ui/intra-doc/errors.stderr
+++ b/tests/rustdoc-ui/intra-doc/errors.stderr
@@ -80,13 +80,13 @@ error: unresolved link to `u8::not_found`
   --> $DIR/errors.rs:55:6
    |
 LL | /// [u8::not_found]
-   |      ^^^^^^^^^^^^^ the builtin type `u8` has no associated item named `not_found`
+   |      ^^^^^^^^^^^^^ the primitive type `u8` has no associated item named `not_found`
 
 error: unresolved link to `std::primitive::u8::not_found`
   --> $DIR/errors.rs:59:6
    |
 LL | /// [std::primitive::u8::not_found]
-   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the builtin type `u8` has no associated item named `not_found`
+   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the primitive type `u8` has no associated item named `not_found`
 
 error: unresolved link to `Vec::into_iter`
   --> $DIR/errors.rs:63:6
diff --git a/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-10.rs b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-10.rs
new file mode 100644
index 00000000000..464c5f0d543
--- /dev/null
+++ b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-10.rs
@@ -0,0 +1,22 @@
+// This test ensures that this warning doesn't show up:
+// warning: `PartialEq` is both a trait and a derive macro
+//  --> tests/rustdoc-ui/intra-doc/issue-108653-associated-items-10.rs:1:7
+//   |
+// 1 | //! [`PartialEq`]
+//   |       ^^^^^^^^^ ambiguous link
+//   |
+//   = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
+// help: to link to the trait, prefix with `trait@`
+//   |
+// 1 | //! [`trait@PartialEq`]
+//   |       ++++++
+// help: to link to the derive macro, prefix with `derive@`
+//   |
+// 1 | //! [`derive@PartialEq`]
+//   |       +++++++
+
+// check-pass
+
+#![deny(rustdoc::broken_intra_doc_links)]
+
+//! [`PartialEq`]
diff --git a/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-2.rs b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-2.rs
new file mode 100644
index 00000000000..cbe60f746b6
--- /dev/null
+++ b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-2.rs
@@ -0,0 +1,17 @@
+// This is ensuring that the UI output for associated items is as expected.
+
+#![deny(rustdoc::broken_intra_doc_links)]
+
+/// [`Trait::IDENT`]
+//~^ ERROR both an associated constant and an associated type
+pub trait Trait {
+    type IDENT;
+    const IDENT: usize;
+}
+
+/// [`Trait2::IDENT`]
+//~^ ERROR both an associated function and an associated type
+pub trait Trait2 {
+    type IDENT;
+    fn IDENT() {}
+}
diff --git a/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-2.stderr b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-2.stderr
new file mode 100644
index 00000000000..952392548da
--- /dev/null
+++ b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-2.stderr
@@ -0,0 +1,37 @@
+error: `Trait::IDENT` is both an associated constant and an associated type
+  --> $DIR/issue-108653-associated-items-2.rs:5:7
+   |
+LL | /// [`Trait::IDENT`]
+   |       ^^^^^^^^^^^^ ambiguous link
+   |
+note: the lint level is defined here
+  --> $DIR/issue-108653-associated-items-2.rs:3:9
+   |
+LL | #![deny(rustdoc::broken_intra_doc_links)]
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+help: to link to the associated constant, prefix with `const@`
+   |
+LL | /// [`const@Trait::IDENT`]
+   |       ++++++
+help: to link to the associated type, prefix with `type@`
+   |
+LL | /// [`type@Trait::IDENT`]
+   |       +++++
+
+error: `Trait2::IDENT` is both an associated function and an associated type
+  --> $DIR/issue-108653-associated-items-2.rs:12:7
+   |
+LL | /// [`Trait2::IDENT`]
+   |       ^^^^^^^^^^^^^ ambiguous link
+   |
+help: to link to the associated function, add parentheses
+   |
+LL | /// [`Trait2::IDENT()`]
+   |                    ++
+help: to link to the associated type, prefix with `type@`
+   |
+LL | /// [`type@Trait2::IDENT`]
+   |       +++++
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-3.rs b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-3.rs
new file mode 100644
index 00000000000..7ffd0a40e7c
--- /dev/null
+++ b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-3.rs
@@ -0,0 +1,16 @@
+// This is ensuring that the UI output for associated items works when it's being documented
+// from another item.
+
+#![deny(rustdoc::broken_intra_doc_links)]
+#![allow(nonstandard_style)]
+
+pub trait Trait {
+    type Trait;
+    const Trait: usize;
+}
+
+/// [`Trait`]
+//~^ ERROR both a constant and a trait
+/// [`Trait::Trait`]
+//~^ ERROR both an associated constant and an associated type
+pub const Trait: usize = 0;
diff --git a/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-3.stderr b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-3.stderr
new file mode 100644
index 00000000000..6401dacb57a
--- /dev/null
+++ b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-3.stderr
@@ -0,0 +1,37 @@
+error: `Trait` is both a constant and a trait
+  --> $DIR/issue-108653-associated-items-3.rs:12:7
+   |
+LL | /// [`Trait`]
+   |       ^^^^^ ambiguous link
+   |
+note: the lint level is defined here
+  --> $DIR/issue-108653-associated-items-3.rs:4:9
+   |
+LL | #![deny(rustdoc::broken_intra_doc_links)]
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+help: to link to the constant, prefix with `const@`
+   |
+LL | /// [`const@Trait`]
+   |       ++++++
+help: to link to the trait, prefix with `trait@`
+   |
+LL | /// [`trait@Trait`]
+   |       ++++++
+
+error: `Trait::Trait` is both an associated constant and an associated type
+  --> $DIR/issue-108653-associated-items-3.rs:14:7
+   |
+LL | /// [`Trait::Trait`]
+   |       ^^^^^^^^^^^^ ambiguous link
+   |
+help: to link to the associated constant, prefix with `const@`
+   |
+LL | /// [`const@Trait::Trait`]
+   |       ++++++
+help: to link to the associated type, prefix with `type@`
+   |
+LL | /// [`type@Trait::Trait`]
+   |       +++++
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-4.rs b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-4.rs
new file mode 100644
index 00000000000..537d61364bb
--- /dev/null
+++ b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-4.rs
@@ -0,0 +1,21 @@
+// This is ensuring that the UI output for associated items works when it's being documented
+// from another item.
+
+#![deny(rustdoc::broken_intra_doc_links)]
+#![allow(nonstandard_style)]
+
+pub trait Trait {
+    type Trait;
+}
+
+/// [`Struct::Trait`]
+//~^ ERROR both an associated constant and an associated type
+pub struct Struct;
+
+impl Trait for Struct {
+    type Trait = Struct;
+}
+
+impl Struct {
+    pub const Trait: usize = 0;
+}
diff --git a/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-4.stderr b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-4.stderr
new file mode 100644
index 00000000000..a8dc91204c0
--- /dev/null
+++ b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-4.stderr
@@ -0,0 +1,22 @@
+error: `Struct::Trait` is both an associated constant and an associated type
+  --> $DIR/issue-108653-associated-items-4.rs:11:7
+   |
+LL | /// [`Struct::Trait`]
+   |       ^^^^^^^^^^^^^ ambiguous link
+   |
+note: the lint level is defined here
+  --> $DIR/issue-108653-associated-items-4.rs:4:9
+   |
+LL | #![deny(rustdoc::broken_intra_doc_links)]
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+help: to link to the associated constant, prefix with `const@`
+   |
+LL | /// [`const@Struct::Trait`]
+   |       ++++++
+help: to link to the associated type, prefix with `type@`
+   |
+LL | /// [`type@Struct::Trait`]
+   |       +++++
+
+error: aborting due to previous error
+
diff --git a/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-5.rs b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-5.rs
new file mode 100644
index 00000000000..bc28bc54421
--- /dev/null
+++ b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-5.rs
@@ -0,0 +1,8 @@
+#![deny(rustdoc::broken_intra_doc_links)]
+#![allow(nonstandard_style)]
+
+/// [`u32::MAX`]
+//~^ ERROR both an associated constant and a trait
+pub mod u32 {
+    pub trait MAX {}
+}
diff --git a/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-5.stderr b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-5.stderr
new file mode 100644
index 00000000000..7430044ac3f
--- /dev/null
+++ b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-5.stderr
@@ -0,0 +1,22 @@
+error: `u32::MAX` is both an associated constant and a trait
+  --> $DIR/issue-108653-associated-items-5.rs:4:7
+   |
+LL | /// [`u32::MAX`]
+   |       ^^^^^^^^ ambiguous link
+   |
+note: the lint level is defined here
+  --> $DIR/issue-108653-associated-items-5.rs:1:9
+   |
+LL | #![deny(rustdoc::broken_intra_doc_links)]
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+help: to link to the associated constant, prefix with `const@`
+   |
+LL | /// [`const@u32::MAX`]
+   |       ++++++
+help: to link to the trait, prefix with `trait@`
+   |
+LL | /// [`trait@u32::MAX`]
+   |       ++++++
+
+error: aborting due to previous error
+
diff --git a/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-6.rs b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-6.rs
new file mode 100644
index 00000000000..8fde74d0ddb
--- /dev/null
+++ b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-6.rs
@@ -0,0 +1,8 @@
+#![deny(rustdoc::broken_intra_doc_links)]
+#![allow(nonstandard_style)]
+
+/// [`u32::MAX`]
+//~^ ERROR both an associated constant and a primitive type
+pub mod u32 {
+    pub use std::primitive::u32 as MAX;
+}
diff --git a/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-6.stderr b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-6.stderr
new file mode 100644
index 00000000000..fe2d8cafa30
--- /dev/null
+++ b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-6.stderr
@@ -0,0 +1,22 @@
+error: `u32::MAX` is both an associated constant and a primitive type
+  --> $DIR/issue-108653-associated-items-6.rs:4:7
+   |
+LL | /// [`u32::MAX`]
+   |       ^^^^^^^^ ambiguous link
+   |
+note: the lint level is defined here
+  --> $DIR/issue-108653-associated-items-6.rs:1:9
+   |
+LL | #![deny(rustdoc::broken_intra_doc_links)]
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+help: to link to the associated constant, prefix with `const@`
+   |
+LL | /// [`const@u32::MAX`]
+   |       ++++++
+help: to link to the primitive type, prefix with `prim@`
+   |
+LL | /// [`prim@u32::MAX`]
+   |       +++++
+
+error: aborting due to previous error
+
diff --git a/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-7.rs b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-7.rs
new file mode 100644
index 00000000000..6e99f4365a7
--- /dev/null
+++ b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-7.rs
@@ -0,0 +1,12 @@
+#![deny(rustdoc::broken_intra_doc_links)]
+#![allow(nonstandard_style)]
+
+pub trait Trait {
+    type MAX;
+}
+
+/// [`u32::MAX`]
+//~^ ERROR both an associated constant and an associated type
+impl Trait for u32 {
+    type MAX = u32;
+}
diff --git a/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-7.stderr b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-7.stderr
new file mode 100644
index 00000000000..1d302ff42e8
--- /dev/null
+++ b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-7.stderr
@@ -0,0 +1,22 @@
+error: `u32::MAX` is both an associated constant and an associated type
+  --> $DIR/issue-108653-associated-items-7.rs:8:7
+   |
+LL | /// [`u32::MAX`]
+   |       ^^^^^^^^ ambiguous link
+   |
+note: the lint level is defined here
+  --> $DIR/issue-108653-associated-items-7.rs:1:9
+   |
+LL | #![deny(rustdoc::broken_intra_doc_links)]
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+help: to link to the associated constant, prefix with `const@`
+   |
+LL | /// [`const@u32::MAX`]
+   |       ++++++
+help: to link to the associated type, prefix with `type@`
+   |
+LL | /// [`type@u32::MAX`]
+   |       +++++
+
+error: aborting due to previous error
+
diff --git a/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-8.rs b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-8.rs
new file mode 100644
index 00000000000..2f8ee1566bd
--- /dev/null
+++ b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-8.rs
@@ -0,0 +1,12 @@
+#![deny(rustdoc::broken_intra_doc_links)]
+#![allow(nonstandard_style)]
+
+/// [`u32::MAX`]
+//~^ ERROR both an associated constant and an associated type
+pub trait T {
+    type MAX;
+}
+
+impl T for u32 {
+    type MAX = ();
+}
diff --git a/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-8.stderr b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-8.stderr
new file mode 100644
index 00000000000..efed0e2ce0f
--- /dev/null
+++ b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-8.stderr
@@ -0,0 +1,22 @@
+error: `u32::MAX` is both an associated constant and an associated type
+  --> $DIR/issue-108653-associated-items-8.rs:4:7
+   |
+LL | /// [`u32::MAX`]
+   |       ^^^^^^^^ ambiguous link
+   |
+note: the lint level is defined here
+  --> $DIR/issue-108653-associated-items-8.rs:1:9
+   |
+LL | #![deny(rustdoc::broken_intra_doc_links)]
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+help: to link to the associated constant, prefix with `const@`
+   |
+LL | /// [`const@u32::MAX`]
+   |       ++++++
+help: to link to the associated type, prefix with `type@`
+   |
+LL | /// [`type@u32::MAX`]
+   |       +++++
+
+error: aborting due to previous error
+
diff --git a/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-9.rs b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-9.rs
new file mode 100644
index 00000000000..3357ccf2460
--- /dev/null
+++ b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items-9.rs
@@ -0,0 +1,11 @@
+// check-pass
+
+#![deny(warnings)]
+
+//! [usize::Item]
+
+pub trait Foo { type Item; }
+pub trait Bar { type Item; }
+
+impl Foo for usize { type Item = u32; }
+impl Bar for usize { type Item = i32; }
diff --git a/tests/rustdoc-ui/intra-doc/issue-108653-associated-items.rs b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items.rs
new file mode 100644
index 00000000000..0a393e26d6a
--- /dev/null
+++ b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items.rs
@@ -0,0 +1,35 @@
+// This is ensuring that the UI output for associated items is as expected.
+
+#![deny(rustdoc::broken_intra_doc_links)]
+
+pub enum Enum {
+    IDENT,
+}
+
+/// [`Self::IDENT`]
+//~^ ERROR both an associated function and an associated type
+pub trait Trait {
+    type IDENT;
+    fn IDENT();
+}
+
+/// [`Self::IDENT`]
+//~^ ERROR both an associated function and a variant
+impl Trait for Enum {
+    type IDENT = usize;
+    fn IDENT() {}
+}
+
+/// [`Self::IDENT2`]
+//~^ ERROR both an associated constant and an associated type
+pub trait Trait2 {
+    type IDENT2;
+    const IDENT2: usize;
+}
+
+/// [`Self::IDENT2`]
+//~^ ERROR both an associated constant and an associated type
+impl Trait2 for Enum {
+    type IDENT2 = usize;
+    const IDENT2: usize = 0;
+}
diff --git a/tests/rustdoc-ui/intra-doc/issue-108653-associated-items.stderr b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items.stderr
new file mode 100644
index 00000000000..084aefc97c8
--- /dev/null
+++ b/tests/rustdoc-ui/intra-doc/issue-108653-associated-items.stderr
@@ -0,0 +1,67 @@
+error: `Self::IDENT` is both an associated function and an associated type
+  --> $DIR/issue-108653-associated-items.rs:9:7
+   |
+LL | /// [`Self::IDENT`]
+   |       ^^^^^^^^^^^ ambiguous link
+   |
+note: the lint level is defined here
+  --> $DIR/issue-108653-associated-items.rs:3:9
+   |
+LL | #![deny(rustdoc::broken_intra_doc_links)]
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+help: to link to the associated function, add parentheses
+   |
+LL | /// [`Self::IDENT()`]
+   |                  ++
+help: to link to the associated type, prefix with `type@`
+   |
+LL | /// [`type@Self::IDENT`]
+   |       +++++
+
+error: `Self::IDENT2` is both an associated constant and an associated type
+  --> $DIR/issue-108653-associated-items.rs:23:7
+   |
+LL | /// [`Self::IDENT2`]
+   |       ^^^^^^^^^^^^ ambiguous link
+   |
+help: to link to the associated constant, prefix with `const@`
+   |
+LL | /// [`const@Self::IDENT2`]
+   |       ++++++
+help: to link to the associated type, prefix with `type@`
+   |
+LL | /// [`type@Self::IDENT2`]
+   |       +++++
+
+error: `Self::IDENT2` is both an associated constant and an associated type
+  --> $DIR/issue-108653-associated-items.rs:30:7
+   |
+LL | /// [`Self::IDENT2`]
+   |       ^^^^^^^^^^^^ ambiguous link
+   |
+help: to link to the associated constant, prefix with `const@`
+   |
+LL | /// [`const@Self::IDENT2`]
+   |       ++++++
+help: to link to the associated type, prefix with `type@`
+   |
+LL | /// [`type@Self::IDENT2`]
+   |       +++++
+
+error: `Self::IDENT` is both an associated function and a variant
+  --> $DIR/issue-108653-associated-items.rs:16:7
+   |
+LL | /// [`Self::IDENT`]
+   |       ^^^^^^^^^^^ ambiguous link
+   |
+help: to link to the associated function, add parentheses
+   |
+LL | /// [`Self::IDENT()`]
+   |                  ++
+help: to link to the variant, prefix with `type@`
+   |
+LL | /// [`type@Self::IDENT`]
+   |       +++++
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/rustdoc-ui/intra-doc/non-path-primitives.stderr b/tests/rustdoc-ui/intra-doc/non-path-primitives.stderr
index 8ec894d101b..6e08a923963 100644
--- a/tests/rustdoc-ui/intra-doc/non-path-primitives.stderr
+++ b/tests/rustdoc-ui/intra-doc/non-path-primitives.stderr
@@ -39,25 +39,25 @@ error: unresolved link to `unit::eq`
   --> $DIR/non-path-primitives.rs:28:6
    |
 LL | //! [unit::eq]
-   |      ^^^^^^^^ the builtin type `unit` has no associated item named `eq`
+   |      ^^^^^^^^ the primitive type `unit` has no associated item named `eq`
 
 error: unresolved link to `tuple::eq`
   --> $DIR/non-path-primitives.rs:29:6
    |
 LL | //! [tuple::eq]
-   |      ^^^^^^^^^ the builtin type `tuple` has no associated item named `eq`
+   |      ^^^^^^^^^ the primitive type `tuple` has no associated item named `eq`
 
 error: unresolved link to `fn::eq`
   --> $DIR/non-path-primitives.rs:30:6
    |
 LL | //! [fn::eq]
-   |      ^^^^^^ the builtin type `fn` has no associated item named `eq`
+   |      ^^^^^^ the primitive type `fn` has no associated item named `eq`
 
 error: unresolved link to `reference::deref`
   --> $DIR/non-path-primitives.rs:34:6
    |
 LL | //! [reference::deref]
-   |      ^^^^^^^^^^^^^^^^ the builtin type `reference` has no associated item named `deref`
+   |      ^^^^^^^^^^^^^^^^ the primitive type `reference` has no associated item named `deref`
 
 error: aborting due to 8 previous errors
 
diff --git a/tests/rustdoc-ui/intra-doc/prim-conflict.rs b/tests/rustdoc-ui/intra-doc/prim-conflict.rs
index 2c1a8b5357a..e87ce095cd4 100644
--- a/tests/rustdoc-ui/intra-doc/prim-conflict.rs
+++ b/tests/rustdoc-ui/intra-doc/prim-conflict.rs
@@ -2,16 +2,16 @@
 //~^ NOTE lint level is defined
 
 /// [char]
-//~^ ERROR both a module and a builtin type
+//~^ ERROR both a module and a primitive type
 //~| NOTE ambiguous link
 //~| HELP to link to the module
-//~| HELP to link to the builtin type
+//~| HELP to link to the primitive type
 
 /// [type@char]
-//~^ ERROR both a module and a builtin type
+//~^ ERROR both a module and a primitive type
 //~| NOTE ambiguous link
 //~| HELP to link to the module
-//~| HELP to link to the builtin type
+//~| HELP to link to the primitive type
 
 /// [mod@char] // ok
 /// [prim@char] // ok
@@ -26,5 +26,5 @@ pub mod inner {
     //! [struct@char]
     //~^ ERROR incompatible link
     //~| HELP prefix with `prim@`
-    //~| NOTE resolved to a builtin type
+    //~| NOTE resolved to a primitive type
 }
diff --git a/tests/rustdoc-ui/intra-doc/prim-conflict.stderr b/tests/rustdoc-ui/intra-doc/prim-conflict.stderr
index 6ef3b7eab3b..03ce8f15f0a 100644
--- a/tests/rustdoc-ui/intra-doc/prim-conflict.stderr
+++ b/tests/rustdoc-ui/intra-doc/prim-conflict.stderr
@@ -1,4 +1,4 @@
-error: `char` is both a module and a builtin type
+error: `char` is both a module and a primitive type
   --> $DIR/prim-conflict.rs:4:6
    |
 LL | /// [char]
@@ -13,12 +13,12 @@ help: to link to the module, prefix with `mod@`
    |
 LL | /// [mod@char]
    |      ++++
-help: to link to the builtin type, prefix with `prim@`
+help: to link to the primitive type, prefix with `prim@`
    |
 LL | /// [prim@char]
    |      +++++
 
-error: `char` is both a module and a builtin type
+error: `char` is both a module and a primitive type
   --> $DIR/prim-conflict.rs:10:6
    |
 LL | /// [type@char]
@@ -28,7 +28,7 @@ help: to link to the module, prefix with `mod@`
    |
 LL | /// [mod@char]
    |      ~~~~
-help: to link to the builtin type, prefix with `prim@`
+help: to link to the primitive type, prefix with `prim@`
    |
 LL | /// [prim@char]
    |      ~~~~~
@@ -48,9 +48,9 @@ error: incompatible link kind for `char`
   --> $DIR/prim-conflict.rs:26:10
    |
 LL |     //! [struct@char]
-   |          ^^^^^^^^^^^ this link resolved to a builtin type, which is not a struct
+   |          ^^^^^^^^^^^ this link resolved to a primitive type, which is not a struct
    |
-help: to link to the builtin type, prefix with `prim@`
+help: to link to the primitive type, prefix with `prim@`
    |
 LL |     //! [prim@char]
    |          ~~~~~
diff --git a/tests/rustdoc/async-fn-opaque-item.rs b/tests/rustdoc/async-fn-opaque-item.rs
new file mode 100644
index 00000000000..a73e84f3fdc
--- /dev/null
+++ b/tests/rustdoc/async-fn-opaque-item.rs
@@ -0,0 +1,15 @@
+// compile-flags: --document-private-items --crate-type=lib
+// edition: 2021
+
+// Issue 109931 -- test against accidentally documenting the `impl Future`
+// that comes from an async fn desugaring.
+
+// Check that we don't document an unnamed opaque type
+// @!has async_fn_opaque_item/opaque..html
+
+// Checking there is only a "Functions" header and no "Opaque types".
+// @has async_fn_opaque_item/index.html
+// @count - '//*[@class="small-section-header"]' 1
+// @has - '//*[@class="small-section-header"]' 'Functions'
+
+pub async fn test() {}
diff --git a/tests/rustdoc/auto-impl-primitive.rs b/tests/rustdoc/auto-impl-primitive.rs
index 172333d445d..a6db93dbc33 100644
--- a/tests/rustdoc/auto-impl-primitive.rs
+++ b/tests/rustdoc/auto-impl-primitive.rs
@@ -1,10 +1,10 @@
-#![feature(rustdoc_internals)]
+#![feature(rustc_attrs)]
 
 #![crate_name = "foo"]
 
 pub use std::fs::File;
 
 // @has 'foo/primitive.i16.html' '//h2[@id="synthetic-implementations"]' 'Auto Trait Implementation'
-#[doc(primitive = "i16")]
+#[rustc_doc_primitive = "i16"]
 /// I love poneys!
 mod prim {}
diff --git a/tests/rustdoc/auxiliary/issue-15318.rs b/tests/rustdoc/auxiliary/issue-15318.rs
index 695fa58ef1d..a2f426c6352 100644
--- a/tests/rustdoc/auxiliary/issue-15318.rs
+++ b/tests/rustdoc/auxiliary/issue-15318.rs
@@ -2,6 +2,7 @@
 // compile-flags: -Cmetadata=aux
 #![crate_type = "rlib"]
 #![doc(html_root_url = "http://example.com/")]
+#![feature(rustc_attrs)]
 #![feature(lang_items)]
 #![no_std]
 
@@ -12,5 +13,5 @@ fn foo() {}
 fn bar(_: &core::panic::PanicInfo) -> ! { loop {} }
 
 /// dox
-#[doc(primitive = "pointer")]
+#[rustc_doc_primitive = "pointer"]
 pub mod ptr {}
diff --git a/tests/rustdoc/auxiliary/primitive-doc.rs b/tests/rustdoc/auxiliary/primitive-doc.rs
index e8da852a57e..d1785e42391 100644
--- a/tests/rustdoc/auxiliary/primitive-doc.rs
+++ b/tests/rustdoc/auxiliary/primitive-doc.rs
@@ -1,9 +1,10 @@
 // compile-flags: --crate-type lib --edition 2018
 
+#![feature(rustc_attrs)]
 #![feature(no_core)]
 #![no_core]
 
-#[doc(primitive = "usize")]
+#[rustc_doc_primitive = "usize"]
 /// This is the built-in type `usize`.
 mod usize {
 }
diff --git a/tests/rustdoc/check-source-code-urls-to-def.rs b/tests/rustdoc/check-source-code-urls-to-def.rs
index 5959f9c7c59..41b9d41fa44 100644
--- a/tests/rustdoc/check-source-code-urls-to-def.rs
+++ b/tests/rustdoc/check-source-code-urls-to-def.rs
@@ -2,7 +2,7 @@
 // aux-build:source_code.rs
 // build-aux-docs
 
-#![feature(rustdoc_internals)]
+#![feature(rustc_attrs)]
 
 #![crate_name = "foo"]
 
@@ -65,5 +65,5 @@ pub fn foo4() {
 }
 
 // @has - '//pre[@class="rust"]//a[@href="../../foo/primitive.bool.html"]' 'bool'
-#[doc(primitive = "bool")]
+#[rustc_doc_primitive = "bool"]
 mod whatever {}
diff --git a/tests/rustdoc/generic-associated-types/issue-109488.rs b/tests/rustdoc/generic-associated-types/issue-109488.rs
new file mode 100644
index 00000000000..99ae8a6c36c
--- /dev/null
+++ b/tests/rustdoc/generic-associated-types/issue-109488.rs
@@ -0,0 +1,18 @@
+// Make sure that we escape the arguments of the GAT projection even if we fail to compute
+// the href of the corresponding trait (in this case it is private).
+// Further, test that we also linkify the GAT arguments.
+
+// @has 'issue_109488/type.A.html'
+// @has - '//pre[@class="rust item-decl"]' '<S as Tr>::P<Option<i32>>'
+// @has - '//pre[@class="rust item-decl"]//a[@class="enum"]/@href' '{{channel}}/core/option/enum.Option.html'
+pub type A = <S as Tr>::P<Option<i32>>;
+
+/*private*/ trait Tr {
+    type P<T>;
+}
+
+pub struct S;
+
+impl Tr for S {
+    type P<T> = ();
+}
diff --git a/tests/rustdoc/intra-doc/auxiliary/my-core.rs b/tests/rustdoc/intra-doc/auxiliary/my-core.rs
index e22feb03ae6..c050929db96 100644
--- a/tests/rustdoc/intra-doc/auxiliary/my-core.rs
+++ b/tests/rustdoc/intra-doc/auxiliary/my-core.rs
@@ -3,7 +3,7 @@
 #![rustc_coherence_is_core]
 #![crate_type="rlib"]
 
-#[doc(primitive = "char")]
+#[rustc_doc_primitive = "char"]
 /// Some char docs
 mod char {}
 
diff --git a/tests/rustdoc/intra-doc/no-doc-primitive.rs b/tests/rustdoc/intra-doc/no-doc-primitive.rs
index e5eba1d8d48..711ac09ba9a 100644
--- a/tests/rustdoc/intra-doc/no-doc-primitive.rs
+++ b/tests/rustdoc/intra-doc/no-doc-primitive.rs
@@ -1,4 +1,4 @@
-// Crate tree without a `doc(primitive)` module for primitive type linked to by a doc link.
+// Crate tree without a `rustc_doc_primitive` module for primitive type linked to by a doc link.
 
 #![deny(rustdoc::broken_intra_doc_links)]
 #![feature(no_core, lang_items, rustc_attrs)]
diff --git a/tests/rustdoc/intra-doc/prim-methods-local.rs b/tests/rustdoc/intra-doc/prim-methods-local.rs
index 79d8df04515..6de4ec1802f 100644
--- a/tests/rustdoc/intra-doc/prim-methods-local.rs
+++ b/tests/rustdoc/intra-doc/prim-methods-local.rs
@@ -10,7 +10,7 @@
 
 //! A [prim@`char`] and its [`char::len_utf8`].
 
-#[doc(primitive = "char")]
+#[rustc_doc_primitive = "char"]
 mod char {}
 
 impl char {
diff --git a/tests/rustdoc/intra-doc/prim-self.rs b/tests/rustdoc/intra-doc/prim-self.rs
index c7ce71b15f3..d13858a53cf 100644
--- a/tests/rustdoc/intra-doc/prim-self.rs
+++ b/tests/rustdoc/intra-doc/prim-self.rs
@@ -25,7 +25,7 @@ impl usize {
     pub type ME = usize;
 }
 
-#[doc(primitive = "usize")]
+#[rustc_doc_primitive = "usize"]
 /// This has some docs.
 mod usize {}
 
diff --git a/tests/rustdoc/issue-15318-3.rs b/tests/rustdoc/issue-15318-3.rs
index 2fadc26b006..2dab8f94883 100644
--- a/tests/rustdoc/issue-15318-3.rs
+++ b/tests/rustdoc/issue-15318-3.rs
@@ -1,7 +1,7 @@
-#![feature(rustdoc_internals)]
+#![feature(rustc_attrs)]
 
 // @has issue_15318_3/primitive.pointer.html
 
 /// dox
-#[doc(primitive = "pointer")]
+#[rustc_doc_primitive = "pointer"]
 pub mod ptr {}
diff --git a/tests/rustdoc/issue-23511.rs b/tests/rustdoc/issue-23511.rs
index 7576ebb0305..21d02842431 100644
--- a/tests/rustdoc/issue-23511.rs
+++ b/tests/rustdoc/issue-23511.rs
@@ -3,7 +3,7 @@
 #![no_std]
 
 pub mod str {
-    #![doc(primitive = "str")]
+    #![rustc_doc_primitive = "str"]
 
     impl str {
         // @hasraw search-index.js foo
diff --git a/tests/rustdoc/notable-trait/doc-notable_trait-mut_t_is_not_an_iterator.rs b/tests/rustdoc/notable-trait/doc-notable_trait-mut_t_is_not_an_iterator.rs
index bfce46cf444..5af5f7616b5 100644
--- a/tests/rustdoc/notable-trait/doc-notable_trait-mut_t_is_not_an_iterator.rs
+++ b/tests/rustdoc/notable-trait/doc-notable_trait-mut_t_is_not_an_iterator.rs
@@ -6,10 +6,10 @@
 //!
 //! [#80737]: https://github.com/rust-lang/rust/issues/80737
 
-#![feature(rustdoc_internals)]
+#![feature(rustc_attrs)]
 #![no_std]
 
-#[doc(primitive = "reference")]
+#[rustc_doc_primitive = "reference"]
 /// Some useless docs, wouhou!
 ///
 /// We need to put this in here, because notable traits
diff --git a/tests/rustdoc/notable-trait/doc-notable_trait-mut_t_is_not_ref_t.rs b/tests/rustdoc/notable-trait/doc-notable_trait-mut_t_is_not_ref_t.rs
index b359dcea0ff..6c980aaa2b1 100644
--- a/tests/rustdoc/notable-trait/doc-notable_trait-mut_t_is_not_ref_t.rs
+++ b/tests/rustdoc/notable-trait/doc-notable_trait-mut_t_is_not_ref_t.rs
@@ -5,9 +5,9 @@
 //!
 //! [#78160]: https://github.com/rust-lang/rust/issues/78160
 
-#![feature(rustdoc_internals)]
+#![feature(rustc_attrs)]
 
-#[doc(primitive = "reference")]
+#[rustc_doc_primitive = "reference"]
 /// Some useless docs, wouhou!
 ///
 /// We need to put this in here, because notable traits
diff --git a/tests/rustdoc/primitive-reference.rs b/tests/rustdoc/primitive-reference.rs
index 10efbefd2b1..6f034224df5 100644
--- a/tests/rustdoc/primitive-reference.rs
+++ b/tests/rustdoc/primitive-reference.rs
@@ -1,6 +1,6 @@
 #![crate_name = "foo"]
 
-#![feature(rustdoc_internals)]
+#![feature(rustc_attrs)]
 
 // @has foo/index.html
 // @has - '//h2[@id="primitives"]' 'Primitive Types'
@@ -16,7 +16,7 @@
 // @count - '//*[@class="impl"]' 1
 // @has - '//*[@id="impl-Foo%3C%26A%3E-for-%26B"]/*[@class="code-header"]' \
 //        'impl<A, B> Foo<&A> for &B'
-#[doc(primitive = "reference")]
+#[rustc_doc_primitive = "reference"]
 /// this is a test!
 mod reference {}
 
diff --git a/tests/rustdoc/primitive-slice-auto-trait.rs b/tests/rustdoc/primitive-slice-auto-trait.rs
index 77922414676..ba15a73ca1d 100644
--- a/tests/rustdoc/primitive-slice-auto-trait.rs
+++ b/tests/rustdoc/primitive-slice-auto-trait.rs
@@ -1,7 +1,7 @@
 // compile-flags: --crate-type lib --edition 2018
 
 #![crate_name = "foo"]
-#![feature(rustdoc_internals)]
+#![feature(rustc_attrs)]
 
 // @has foo/primitive.slice.html '//a[@class="primitive"]' 'slice'
 // @has - '//h1' 'Primitive Type slice'
@@ -9,6 +9,6 @@
 // @has - '//h2[@id="synthetic-implementations"]' 'Auto Trait Implementations'
 // @has - '//div[@id="synthetic-implementations-list"]//h3' 'impl<T> Send for [T]where T: Send'
 // @has - '//div[@id="synthetic-implementations-list"]//h3' 'impl<T> Sync for [T]where T: Sync'
-#[doc(primitive = "slice")]
+#[rustc_doc_primitive = "slice"]
 /// this is a test!
 mod slice_prim {}
diff --git a/tests/rustdoc/primitive-tuple-auto-trait.rs b/tests/rustdoc/primitive-tuple-auto-trait.rs
index 4344d24f986..2b407b586a3 100644
--- a/tests/rustdoc/primitive-tuple-auto-trait.rs
+++ b/tests/rustdoc/primitive-tuple-auto-trait.rs
@@ -1,7 +1,7 @@
 // compile-flags: --crate-type lib --edition 2018
 
 #![crate_name = "foo"]
-#![feature(rustdoc_internals)]
+#![feature(rustc_attrs)]
 
 // @has foo/primitive.tuple.html '//a[@class="primitive"]' 'tuple'
 // @has - '//h1' 'Primitive Type tuple'
@@ -9,7 +9,7 @@
 // @has - '//h2[@id="synthetic-implementations"]' 'Auto Trait Implementations'
 // @has - '//div[@id="synthetic-implementations-list"]//h3' 'Send'
 // @has - '//div[@id="synthetic-implementations-list"]//h3' 'Sync'
-#[doc(primitive = "tuple")]
+#[rustc_doc_primitive = "tuple"]
 /// this is a test!
 ///
 // Hardcoded anchor to header written in library/core/src/primitive_docs.rs
diff --git a/tests/rustdoc/primitive-unit-auto-trait.rs b/tests/rustdoc/primitive-unit-auto-trait.rs
index 61850e2462d..5a56f1fd83b 100644
--- a/tests/rustdoc/primitive-unit-auto-trait.rs
+++ b/tests/rustdoc/primitive-unit-auto-trait.rs
@@ -1,7 +1,7 @@
 // compile-flags: --crate-type lib --edition 2018
 
 #![crate_name = "foo"]
-#![feature(rustdoc_internals)]
+#![feature(rustc_attrs)]
 
 // @has foo/primitive.unit.html '//a[@class="primitive"]' 'unit'
 // @has - '//h1' 'Primitive Type unit'
@@ -9,6 +9,6 @@
 // @has - '//h2[@id="synthetic-implementations"]' 'Auto Trait Implementations'
 // @has - '//div[@id="synthetic-implementations-list"]//h3' 'impl Send for ()'
 // @has - '//div[@id="synthetic-implementations-list"]//h3' 'impl Sync for ()'
-#[doc(primitive = "unit")]
+#[rustc_doc_primitive = "unit"]
 /// this is a test!
 mod unit_prim {}
diff --git a/tests/rustdoc/primitive/primitive-generic-impl.rs b/tests/rustdoc/primitive/primitive-generic-impl.rs
index 7b336b39810..2da8ae6ff38 100644
--- a/tests/rustdoc/primitive/primitive-generic-impl.rs
+++ b/tests/rustdoc/primitive/primitive-generic-impl.rs
@@ -1,8 +1,8 @@
-#![feature(rustdoc_internals)]
+#![feature(rustc_attrs)]
 #![crate_name = "foo"]
 
 // @has foo/primitive.i32.html '//*[@id="impl-ToString-for-i32"]//h3[@class="code-header"]' 'impl<T> ToString for T'
 
-#[doc(primitive = "i32")]
+#[rustc_doc_primitive = "i32"]
 /// Some useless docs, wouhou!
 mod i32 {}
diff --git a/tests/rustdoc/primitive/primitive.rs b/tests/rustdoc/primitive/primitive.rs
index 516c7c0c6fe..32af2636c18 100644
--- a/tests/rustdoc/primitive/primitive.rs
+++ b/tests/rustdoc/primitive/primitive.rs
@@ -1,6 +1,6 @@
 #![crate_name = "foo"]
 
-#![feature(rustdoc_internals)]
+#![feature(rustc_attrs)]
 
 // @has foo/index.html '//h2[@id="primitives"]' 'Primitive Types'
 // @has foo/index.html '//a[@href="primitive.i32.html"]' 'i32'
@@ -11,11 +11,11 @@
 // @has foo/primitive.i32.html '//section[@id="main-content"]//div[@class="docblock"]//p' 'this is a test!'
 // @has foo/index.html '//a/@href' '../foo/index.html'
 // @!has foo/index.html '//span' '🔒'
-#[doc(primitive = "i32")]
+#[rustc_doc_primitive = "i32"]
 /// this is a test!
 mod i32{}
 
 // @has foo/primitive.bool.html '//section[@id="main-content"]//div[@class="docblock"]//p' 'hello'
-#[doc(primitive = "bool")]
+#[rustc_doc_primitive = "bool"]
 /// hello
 mod bool {}
diff --git a/tests/rustdoc/sidebar-all-page.rs b/tests/rustdoc/sidebar-all-page.rs
index e74b981de64..45a6ba8ed2e 100644
--- a/tests/rustdoc/sidebar-all-page.rs
+++ b/tests/rustdoc/sidebar-all-page.rs
@@ -1,6 +1,6 @@
 #![crate_name = "foo"]
 
-#![feature(rustdoc_internals)]
+#![feature(rustc_attrs)]
 
 // @has 'foo/all.html'
 // @has - '//*[@class="sidebar-elems"]//li' 'Structs'
@@ -31,5 +31,5 @@ macro_rules! foo {
 pub type Type = u8;
 pub const FOO: u8 = 0;
 pub static BAR: u8 = 0;
-#[doc(primitive = "u8")]
+#[rustc_doc_primitive = "u8"]
 mod u8 {}
diff --git a/tests/rustdoc/tab_title.rs b/tests/rustdoc/tab_title.rs
index 0cc4f147e1c..8d781b40e46 100644
--- a/tests/rustdoc/tab_title.rs
+++ b/tests/rustdoc/tab_title.rs
@@ -1,4 +1,5 @@
 #![crate_name = "foo"]
+#![feature(rustc_attrs)]
 #![feature(rustdoc_internals)]
 
 // tests for the html <title> element
@@ -39,6 +40,6 @@ mod continue_keyword {}
 
 // @has foo/primitive.u8.html '//head/title' 'u8 - Rust'
 // @!has - '//head/title' 'foo'
-#[doc(primitive = "u8")]
+#[rustc_doc_primitive = "u8"]
 /// `u8` docs
 mod u8 {}
diff --git a/tests/rustdoc/titles.rs b/tests/rustdoc/titles.rs
index 69e8b856b0a..e1feb1cd64f 100644
--- a/tests/rustdoc/titles.rs
+++ b/tests/rustdoc/titles.rs
@@ -1,5 +1,5 @@
 #![crate_name = "foo"]
-#![feature(rustdoc_internals)]
+#![feature(rustc_attrs)]
 
 // @matches 'foo/index.html' '//h1' 'Crate foo'
 // @matches 'foo/index.html' '//h2[@class="location"]' 'Crate foo'
@@ -41,7 +41,7 @@ macro_rules! foo_macro {
 }
 
 // @matches 'foo/primitive.bool.html' '//h1' 'Primitive Type bool'
-#[doc(primitive = "bool")]
+#[rustc_doc_primitive = "bool"]
 mod bool {}
 
 // @matches 'foo/static.FOO_STATIC.html' '//h1' 'Static foo::FOO_STATIC'
diff --git a/tests/ui-fulldeps/fluent-messages/test.rs b/tests/ui-fulldeps/fluent-messages/test.rs
index 1ee7227a8e9..6ba13387b04 100644
--- a/tests/ui-fulldeps/fluent-messages/test.rs
+++ b/tests/ui-fulldeps/fluent-messages/test.rs
@@ -1,4 +1,4 @@
-// normalize-stderr-test "note.*" -> "note: os-specific message"
+// normalize-stderr-test "could not open Fluent resource:.*" -> "could not open Fluent resource: os-specific message"
 
 #![feature(rustc_private)]
 #![crate_type = "lib"]
diff --git a/tests/ui-fulldeps/fluent-messages/test.stderr b/tests/ui-fulldeps/fluent-messages/test.stderr
index 8a6a4a91cc2..2affe621c11 100644
--- a/tests/ui-fulldeps/fluent-messages/test.stderr
+++ b/tests/ui-fulldeps/fluent-messages/test.stderr
@@ -1,18 +1,14 @@
-error: could not open Fluent resource
+error: could not open Fluent resource: os-specific message
   --> $DIR/test.rs:24:24
    |
 LL |     fluent_messages! { "/definitely_does_not_exist.ftl" }
    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = note: os-specific message
 
-error: could not open Fluent resource
+error: could not open Fluent resource: os-specific message
   --> $DIR/test.rs:31:24
    |
 LL |     fluent_messages! { "../definitely_does_not_exist.ftl" }
    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = note: os-specific message
 
 error: could not parse Fluent resource
   --> $DIR/test.rs:38:24
@@ -89,7 +85,7 @@ error: invalid escape `\n` in Fluent resource
 LL |     fluent_messages! { "./invalid-escape.ftl" }
    |                        ^^^^^^^^^^^^^^^^^^^^^^
    |
-   = note: os-specific message
+   = note: Fluent does not interpret these escape sequences (<https://projectfluent.org/fluent/guide/special.html>)
 
 error: invalid escape `\"` in Fluent resource
   --> $DIR/test.rs:99:24
@@ -97,7 +93,7 @@ error: invalid escape `\"` in Fluent resource
 LL |     fluent_messages! { "./invalid-escape.ftl" }
    |                        ^^^^^^^^^^^^^^^^^^^^^^
    |
-   = note: os-specific message
+   = note: Fluent does not interpret these escape sequences (<https://projectfluent.org/fluent/guide/special.html>)
 
 error: invalid escape `\'` in Fluent resource
   --> $DIR/test.rs:99:24
@@ -105,7 +101,7 @@ error: invalid escape `\'` in Fluent resource
 LL |     fluent_messages! { "./invalid-escape.ftl" }
    |                        ^^^^^^^^^^^^^^^^^^^^^^
    |
-   = note: os-specific message
+   = note: Fluent does not interpret these escape sequences (<https://projectfluent.org/fluent/guide/special.html>)
 
 error: aborting due to 13 previous errors
 
diff --git a/tests/ui/associated-type-bounds/return-type-notation/bad-inputs-and-output.rs b/tests/ui/associated-type-bounds/return-type-notation/bad-inputs-and-output.rs
new file mode 100644
index 00000000000..2f9a1d1c76e
--- /dev/null
+++ b/tests/ui/associated-type-bounds/return-type-notation/bad-inputs-and-output.rs
@@ -0,0 +1,22 @@
+// edition: 2021
+
+#![feature(return_type_notation, async_fn_in_trait)]
+//~^ WARN the feature `return_type_notation` is incomplete
+//~| WARN the feature `async_fn_in_trait` is incomplete
+
+trait Trait {
+    async fn method() {}
+}
+
+fn foo<T: Trait<method(i32): Send>>() {}
+//~^ ERROR argument types not allowed with return type notation
+//~| ERROR associated type bounds are unstable
+
+fn bar<T: Trait<method(..) -> (): Send>>() {}
+//~^ ERROR return type not allowed with return type notation
+
+fn baz<T: Trait<method(): Send>>() {}
+//~^ ERROR return type notation arguments must be elided with `..`
+//~| ERROR associated type bounds are unstable
+
+fn main() {}
diff --git a/tests/ui/associated-type-bounds/return-type-notation/bad-inputs-and-output.stderr b/tests/ui/associated-type-bounds/return-type-notation/bad-inputs-and-output.stderr
new file mode 100644
index 00000000000..b354a6805d6
--- /dev/null
+++ b/tests/ui/associated-type-bounds/return-type-notation/bad-inputs-and-output.stderr
@@ -0,0 +1,56 @@
+error: return type not allowed with return type notation
+  --> $DIR/bad-inputs-and-output.rs:15:28
+   |
+LL | fn bar<T: Trait<method(..) -> (): Send>>() {}
+   |                            ^^^^^ help: remove the return type
+
+error[E0658]: associated type bounds are unstable
+  --> $DIR/bad-inputs-and-output.rs:11:17
+   |
+LL | fn foo<T: Trait<method(i32): Send>>() {}
+   |                 ^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #52662 <https://github.com/rust-lang/rust/issues/52662> for more information
+   = help: add `#![feature(associated_type_bounds)]` to the crate attributes to enable
+
+error[E0658]: associated type bounds are unstable
+  --> $DIR/bad-inputs-and-output.rs:18:17
+   |
+LL | fn baz<T: Trait<method(): Send>>() {}
+   |                 ^^^^^^^^^^^^^^
+   |
+   = note: see issue #52662 <https://github.com/rust-lang/rust/issues/52662> for more information
+   = help: add `#![feature(associated_type_bounds)]` to the crate attributes to enable
+
+warning: the feature `return_type_notation` is incomplete and may not be safe to use and/or cause compiler crashes
+  --> $DIR/bad-inputs-and-output.rs:3:12
+   |
+LL | #![feature(return_type_notation, async_fn_in_trait)]
+   |            ^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
+   = note: `#[warn(incomplete_features)]` on by default
+
+warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
+  --> $DIR/bad-inputs-and-output.rs:3:34
+   |
+LL | #![feature(return_type_notation, async_fn_in_trait)]
+   |                                  ^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
+
+error: argument types not allowed with return type notation
+  --> $DIR/bad-inputs-and-output.rs:11:23
+   |
+LL | fn foo<T: Trait<method(i32): Send>>() {}
+   |                       ^^^^^ help: remove the input types: `(..)`
+
+error: return type notation arguments must be elided with `..`
+  --> $DIR/bad-inputs-and-output.rs:18:23
+   |
+LL | fn baz<T: Trait<method(): Send>>() {}
+   |                       ^^ help: add `..`: `(..)`
+
+error: aborting due to 5 previous errors; 2 warnings emitted
+
+For more information about this error, try `rustc --explain E0658`.
diff --git a/tests/ui/associated-type-bounds/return-type-notation/basic.rs b/tests/ui/associated-type-bounds/return-type-notation/basic.rs
new file mode 100644
index 00000000000..75d1dc745d1
--- /dev/null
+++ b/tests/ui/associated-type-bounds/return-type-notation/basic.rs
@@ -0,0 +1,28 @@
+// revisions: with without
+// edition: 2021
+//[with] check-pass
+
+#![feature(return_type_notation, async_fn_in_trait)]
+//~^ WARN the feature `return_type_notation` is incomplete
+//~| WARN the feature `async_fn_in_trait` is incomplete
+
+trait Foo {
+    async fn method() -> Result<(), ()>;
+}
+
+async fn foo<T: Foo>() -> Result<(), ()> {
+    T::method().await?;
+    Ok(())
+}
+
+fn is_send(_: impl Send) {}
+
+fn test<
+    #[cfg(with)] T: Foo<method(..): Send>,
+    #[cfg(without)] T: Foo,
+>() {
+    is_send(foo::<T>());
+    //[without]~^ ERROR future cannot be sent between threads safely
+}
+
+fn main() {}
diff --git a/tests/ui/associated-type-bounds/return-type-notation/basic.with.stderr b/tests/ui/associated-type-bounds/return-type-notation/basic.with.stderr
new file mode 100644
index 00000000000..722c774cb33
--- /dev/null
+++ b/tests/ui/associated-type-bounds/return-type-notation/basic.with.stderr
@@ -0,0 +1,19 @@
+warning: the feature `return_type_notation` is incomplete and may not be safe to use and/or cause compiler crashes
+  --> $DIR/basic.rs:5:12
+   |
+LL | #![feature(return_type_notation, async_fn_in_trait)]
+   |            ^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
+   = note: `#[warn(incomplete_features)]` on by default
+
+warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
+  --> $DIR/basic.rs:5:34
+   |
+LL | #![feature(return_type_notation, async_fn_in_trait)]
+   |                                  ^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
+
+warning: 2 warnings emitted
+
diff --git a/tests/ui/associated-type-bounds/return-type-notation/basic.without.stderr b/tests/ui/associated-type-bounds/return-type-notation/basic.without.stderr
new file mode 100644
index 00000000000..1645d8c2650
--- /dev/null
+++ b/tests/ui/associated-type-bounds/return-type-notation/basic.without.stderr
@@ -0,0 +1,37 @@
+warning: the feature `return_type_notation` is incomplete and may not be safe to use and/or cause compiler crashes
+  --> $DIR/basic.rs:5:12
+   |
+LL | #![feature(return_type_notation, async_fn_in_trait)]
+   |            ^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
+   = note: `#[warn(incomplete_features)]` on by default
+
+warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
+  --> $DIR/basic.rs:5:34
+   |
+LL | #![feature(return_type_notation, async_fn_in_trait)]
+   |                                  ^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
+
+error: future cannot be sent between threads safely
+  --> $DIR/basic.rs:24:13
+   |
+LL |     is_send(foo::<T>());
+   |             ^^^^^^^^^^ future returned by `foo` is not `Send`
+   |
+   = help: within `impl Future<Output = Result<(), ()>>`, the trait `Send` is not implemented for `impl Future<Output = Result<(), ()>>`
+note: future is not `Send` as it awaits another future which is not `Send`
+  --> $DIR/basic.rs:14:5
+   |
+LL |     T::method().await?;
+   |     ^^^^^^^^^^^ await occurs here on type `impl Future<Output = Result<(), ()>>`, which is not `Send`
+note: required by a bound in `is_send`
+  --> $DIR/basic.rs:18:20
+   |
+LL | fn is_send(_: impl Send) {}
+   |                    ^^^^ required by this bound in `is_send`
+
+error: aborting due to previous error; 2 warnings emitted
+
diff --git a/tests/ui/associated-type-bounds/return-type-notation/equality.rs b/tests/ui/associated-type-bounds/return-type-notation/equality.rs
new file mode 100644
index 00000000000..c8fc980974e
--- /dev/null
+++ b/tests/ui/associated-type-bounds/return-type-notation/equality.rs
@@ -0,0 +1,16 @@
+// edition: 2021
+
+#![feature(return_type_notation, async_fn_in_trait)]
+//~^ WARN the feature `return_type_notation` is incomplete
+//~| WARN the feature `async_fn_in_trait` is incomplete
+
+use std::future::Future;
+
+trait Trait {
+    async fn method() {}
+}
+
+fn test<T: Trait<method(..) = Box<dyn Future<Output = ()>>>>() {}
+//~^ ERROR return type notation is not allowed to use type equality
+
+fn main() {}
diff --git a/tests/ui/associated-type-bounds/return-type-notation/equality.stderr b/tests/ui/associated-type-bounds/return-type-notation/equality.stderr
new file mode 100644
index 00000000000..cd50ff38694
--- /dev/null
+++ b/tests/ui/associated-type-bounds/return-type-notation/equality.stderr
@@ -0,0 +1,25 @@
+warning: the feature `return_type_notation` is incomplete and may not be safe to use and/or cause compiler crashes
+  --> $DIR/equality.rs:3:12
+   |
+LL | #![feature(return_type_notation, async_fn_in_trait)]
+   |            ^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
+   = note: `#[warn(incomplete_features)]` on by default
+
+warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
+  --> $DIR/equality.rs:3:34
+   |
+LL | #![feature(return_type_notation, async_fn_in_trait)]
+   |                                  ^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
+
+error: return type notation is not allowed to use type equality
+  --> $DIR/equality.rs:13:18
+   |
+LL | fn test<T: Trait<method(..) = Box<dyn Future<Output = ()>>>>() {}
+   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error; 2 warnings emitted
+
diff --git a/tests/ui/associated-type-bounds/return-type-notation/missing.rs b/tests/ui/associated-type-bounds/return-type-notation/missing.rs
new file mode 100644
index 00000000000..1263cae4477
--- /dev/null
+++ b/tests/ui/associated-type-bounds/return-type-notation/missing.rs
@@ -0,0 +1,14 @@
+// edition: 2021
+
+#![feature(return_type_notation, async_fn_in_trait)]
+//~^ WARN the feature `return_type_notation` is incomplete
+//~| WARN the feature `async_fn_in_trait` is incomplete
+
+trait Trait {
+    async fn method() {}
+}
+
+fn bar<T: Trait<methid(..): Send>>() {}
+//~^ ERROR cannot find associated function `methid` in trait `Trait`
+
+fn main() {}
diff --git a/tests/ui/associated-type-bounds/return-type-notation/missing.stderr b/tests/ui/associated-type-bounds/return-type-notation/missing.stderr
new file mode 100644
index 00000000000..93111b5c36b
--- /dev/null
+++ b/tests/ui/associated-type-bounds/return-type-notation/missing.stderr
@@ -0,0 +1,25 @@
+warning: the feature `return_type_notation` is incomplete and may not be safe to use and/or cause compiler crashes
+  --> $DIR/missing.rs:3:12
+   |
+LL | #![feature(return_type_notation, async_fn_in_trait)]
+   |            ^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
+   = note: `#[warn(incomplete_features)]` on by default
+
+warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
+  --> $DIR/missing.rs:3:34
+   |
+LL | #![feature(return_type_notation, async_fn_in_trait)]
+   |                                  ^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
+
+error: cannot find associated function `methid` in trait `Trait`
+  --> $DIR/missing.rs:11:17
+   |
+LL | fn bar<T: Trait<methid(..): Send>>() {}
+   |                 ^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error; 2 warnings emitted
+
diff --git a/tests/ui/associated-type-bounds/return-type-notation/non-rpitit.rs b/tests/ui/associated-type-bounds/return-type-notation/non-rpitit.rs
new file mode 100644
index 00000000000..d283c6eab37
--- /dev/null
+++ b/tests/ui/associated-type-bounds/return-type-notation/non-rpitit.rs
@@ -0,0 +1,11 @@
+#![feature(return_type_notation)]
+//~^ WARN the feature `return_type_notation` is incomplete
+
+trait Trait {
+    fn method() {}
+}
+
+fn test<T: Trait<method(..): Send>>() {}
+//~^ ERROR  return type notation used on function that is not `async` and does not return `impl Trait`
+
+fn main() {}
diff --git a/tests/ui/associated-type-bounds/return-type-notation/non-rpitit.stderr b/tests/ui/associated-type-bounds/return-type-notation/non-rpitit.stderr
new file mode 100644
index 00000000000..38c498bc2fb
--- /dev/null
+++ b/tests/ui/associated-type-bounds/return-type-notation/non-rpitit.stderr
@@ -0,0 +1,22 @@
+warning: the feature `return_type_notation` is incomplete and may not be safe to use and/or cause compiler crashes
+  --> $DIR/non-rpitit.rs:1:12
+   |
+LL | #![feature(return_type_notation)]
+   |            ^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
+   = note: `#[warn(incomplete_features)]` on by default
+
+error: return type notation used on function that is not `async` and does not return `impl Trait`
+  --> $DIR/non-rpitit.rs:8:18
+   |
+LL |     fn method() {}
+   |     ----------- this function must be `async` or return `impl Trait`
+...
+LL | fn test<T: Trait<method(..): Send>>() {}
+   |                  ^^^^^^^^^^^^^^^^
+   |
+   = note: function returns `()`, which is not compatible with associated type return bounds
+
+error: aborting due to previous error; 1 warning emitted
+
diff --git a/tests/ui/associated-type-bounds/return-type-notation/unpretty-parenthesized.rs b/tests/ui/associated-type-bounds/return-type-notation/unpretty-parenthesized.rs
new file mode 100644
index 00000000000..9129f37e0c6
--- /dev/null
+++ b/tests/ui/associated-type-bounds/return-type-notation/unpretty-parenthesized.rs
@@ -0,0 +1,11 @@
+// edition: 2021
+// compile-flags: -Zunpretty=expanded
+
+trait Trait {
+    async fn method() {}
+}
+
+fn foo<T: Trait<method(i32): Send>>() {}
+//~^ ERROR associated type bounds are unstable
+
+fn main() {}
diff --git a/tests/ui/associated-type-bounds/return-type-notation/unpretty-parenthesized.stderr b/tests/ui/associated-type-bounds/return-type-notation/unpretty-parenthesized.stderr
new file mode 100644
index 00000000000..77e015b4160
--- /dev/null
+++ b/tests/ui/associated-type-bounds/return-type-notation/unpretty-parenthesized.stderr
@@ -0,0 +1,12 @@
+error[E0658]: associated type bounds are unstable
+  --> $DIR/unpretty-parenthesized.rs:8:17
+   |
+LL | fn foo<T: Trait<method(i32): Send>>() {}
+   |                 ^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #52662 <https://github.com/rust-lang/rust/issues/52662> for more information
+   = help: add `#![feature(associated_type_bounds)]` to the crate attributes to enable
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0658`.
diff --git a/tests/ui/associated-type-bounds/return-type-notation/unpretty-parenthesized.stdout b/tests/ui/associated-type-bounds/return-type-notation/unpretty-parenthesized.stdout
new file mode 100644
index 00000000000..b3dea8f6eca
--- /dev/null
+++ b/tests/ui/associated-type-bounds/return-type-notation/unpretty-parenthesized.stdout
@@ -0,0 +1,15 @@
+#![feature(prelude_import)]
+#[prelude_import]
+use std::prelude::rust_2021::*;
+#[macro_use]
+extern crate std;
+// edition: 2021
+// compile-flags: -Zunpretty=expanded
+
+trait Trait {
+    async fn method() {}
+}
+
+fn foo<T: Trait<method(i32) : Send>>() {}
+
+fn main() {}
diff --git a/tests/ui/async-await/missed-capture-issue-107414.rs b/tests/ui/async-await/missed-capture-issue-107414.rs
new file mode 100644
index 00000000000..0ab4f5ade98
--- /dev/null
+++ b/tests/ui/async-await/missed-capture-issue-107414.rs
@@ -0,0 +1,24 @@
+// check-pass
+// edition:2018
+
+fn main() {}
+
+struct StructA {}
+struct StructB {}
+
+impl StructA {
+    fn fn_taking_struct_b(&self, struct_b: &StructB) -> bool {
+        true
+    }
+}
+
+async fn get_struct_a_async() -> StructA {
+    StructA {}
+}
+
+async fn ice() {
+    match Some(StructB {}) {
+        Some(struct_b) if get_struct_a_async().await.fn_taking_struct_b(&struct_b) => {}
+        _ => {}
+    }
+}
diff --git a/tests/ui/autoref-autoderef/issue-38940.rs b/tests/ui/autoref-autoderef/issue-38940.rs
deleted file mode 100644
index d2f1c6e3271..00000000000
--- a/tests/ui/autoref-autoderef/issue-38940.rs
+++ /dev/null
@@ -1,52 +0,0 @@
-// issue-38940: error printed twice for deref recursion limit exceeded
-// Test that the recursion limit can be changed. In this case, we have
-// deeply nested types that will fail the `Send` check by overflow
-// when the recursion limit is set very low.
-// compile-flags: -Zdeduplicate-diagnostics=yes
-
-#![allow(dead_code)]
-#![recursion_limit = "10"]
-macro_rules! link {
-    ($outer:ident, $inner:ident) => {
-        struct $outer($inner);
-        impl $outer {
-            fn new() -> $outer {
-                $outer($inner::new())
-            }
-        }
-        impl std::ops::Deref for $outer {
-            type Target = $inner;
-            fn deref(&self) -> &$inner {
-                &self.0
-            }
-        }
-    };
-}
-
-struct Bottom;
-
-impl Bottom {
-    fn new() -> Bottom {
-        Bottom
-    }
-}
-
-link!(Top, A);
-link!(A, B);
-link!(B, C);
-link!(C, D);
-link!(D, E);
-link!(E, F);
-link!(F, G);
-link!(G, H);
-link!(H, I);
-link!(I, J);
-link!(J, K);
-link!(K, Bottom);
-
-fn main() {
-    let t = Top::new();
-    let x: &Bottom = &t;
-    //~^ ERROR mismatched types
-    //~| ERROR reached the recursion limit while auto-dereferencing `J`
-}
diff --git a/tests/ui/autoref-autoderef/issue-38940.stderr b/tests/ui/autoref-autoderef/issue-38940.stderr
deleted file mode 100644
index 8e98bfcd90f..00000000000
--- a/tests/ui/autoref-autoderef/issue-38940.stderr
+++ /dev/null
@@ -1,23 +0,0 @@
-error[E0055]: reached the recursion limit while auto-dereferencing `J`
-  --> $DIR/issue-38940.rs:49:22
-   |
-LL |     let x: &Bottom = &t;
-   |                      ^^ deref recursion limit reached
-   |
-   = help: consider increasing the recursion limit by adding a `#![recursion_limit = "20"]` attribute to your crate (`issue_38940`)
-
-error[E0308]: mismatched types
-  --> $DIR/issue-38940.rs:49:22
-   |
-LL |     let x: &Bottom = &t;
-   |            -------   ^^ expected `&Bottom`, found `&Top`
-   |            |
-   |            expected due to this
-   |
-   = note: expected reference `&Bottom`
-              found reference `&Top`
-
-error: aborting due to 2 previous errors
-
-Some errors have detailed explanations: E0055, E0308.
-For more information about an error, try `rustc --explain E0055`.
diff --git a/tests/ui/closures/2229_closure_analysis/array_subslice.rs b/tests/ui/closures/2229_closure_analysis/array_subslice.rs
new file mode 100644
index 00000000000..5f244ea8936
--- /dev/null
+++ b/tests/ui/closures/2229_closure_analysis/array_subslice.rs
@@ -0,0 +1,13 @@
+// regression test for #109298
+// edition: 2021
+
+pub fn subslice_array(x: [u8; 3]) {
+    let f = || {
+        let [_x @ ..] = x;
+        let [ref y, ref mut z @ ..] = x; //~ ERROR cannot borrow `x[..]` as mutable
+    };
+
+    f(); //~ ERROR cannot borrow `f` as mutable
+}
+
+fn main() {}
diff --git a/tests/ui/closures/2229_closure_analysis/array_subslice.stderr b/tests/ui/closures/2229_closure_analysis/array_subslice.stderr
new file mode 100644
index 00000000000..888c60d5e91
--- /dev/null
+++ b/tests/ui/closures/2229_closure_analysis/array_subslice.stderr
@@ -0,0 +1,26 @@
+error[E0596]: cannot borrow `x[..]` as mutable, as `x` is not declared as mutable
+  --> $DIR/array_subslice.rs:7:21
+   |
+LL | pub fn subslice_array(x: [u8; 3]) {
+   |                       - help: consider changing this to be mutable: `mut x`
+...
+LL |         let [ref y, ref mut z @ ..] = x;
+   |                     ^^^^^^^^^ cannot borrow as mutable
+
+error[E0596]: cannot borrow `f` as mutable, as it is not declared as mutable
+  --> $DIR/array_subslice.rs:10:5
+   |
+LL |         let [ref y, ref mut z @ ..] = x;
+   |                                       - calling `f` requires mutable binding due to mutable borrow of `x`
+...
+LL |     f();
+   |     ^ cannot borrow as mutable
+   |
+help: consider changing this to be mutable
+   |
+LL |     let mut f = || {
+   |         +++
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0596`.
diff --git a/tests/ui/did_you_mean/recursion_limit_deref.stderr b/tests/ui/did_you_mean/recursion_limit_deref.stderr
index 32fb628c470..b0c493faf1e 100644
--- a/tests/ui/did_you_mean/recursion_limit_deref.stderr
+++ b/tests/ui/did_you_mean/recursion_limit_deref.stderr
@@ -1,3 +1,7 @@
+error: reached the recursion limit finding the struct tail for `Bottom`
+   |
+   = help: consider increasing the recursion limit by adding a `#![recursion_limit = "20"]`
+
 error[E0055]: reached the recursion limit while auto-dereferencing `J`
   --> $DIR/recursion_limit_deref.rs:51:22
    |
@@ -17,7 +21,7 @@ LL |     let x: &Bottom = &t;
    = note: expected reference `&Bottom`
               found reference `&Top`
 
-error: aborting due to 2 previous errors
+error: aborting due to 3 previous errors
 
 Some errors have detailed explanations: E0055, E0308.
 For more information about an error, try `rustc --explain E0055`.
diff --git a/tests/ui/feature-gates/feature-gate-return_type_notation.cfg.stderr b/tests/ui/feature-gates/feature-gate-return_type_notation.cfg.stderr
new file mode 100644
index 00000000000..85728f8e1ad
--- /dev/null
+++ b/tests/ui/feature-gates/feature-gate-return_type_notation.cfg.stderr
@@ -0,0 +1,21 @@
+error[E0658]: return type notation is experimental
+  --> $DIR/feature-gate-return_type_notation.rs:12:18
+   |
+LL | fn foo<T: Trait<m(..): Send>>() {}
+   |                  ^^^^
+   |
+   = note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
+   = help: add `#![feature(return_type_notation)]` to the crate attributes to enable
+
+warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
+  --> $DIR/feature-gate-return_type_notation.rs:4:12
+   |
+LL | #![feature(async_fn_in_trait)]
+   |            ^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
+   = note: `#[warn(incomplete_features)]` on by default
+
+error: aborting due to previous error; 1 warning emitted
+
+For more information about this error, try `rustc --explain E0658`.
diff --git a/tests/ui/feature-gates/feature-gate-return_type_notation.no.stderr b/tests/ui/feature-gates/feature-gate-return_type_notation.no.stderr
new file mode 100644
index 00000000000..85728f8e1ad
--- /dev/null
+++ b/tests/ui/feature-gates/feature-gate-return_type_notation.no.stderr
@@ -0,0 +1,21 @@
+error[E0658]: return type notation is experimental
+  --> $DIR/feature-gate-return_type_notation.rs:12:18
+   |
+LL | fn foo<T: Trait<m(..): Send>>() {}
+   |                  ^^^^
+   |
+   = note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
+   = help: add `#![feature(return_type_notation)]` to the crate attributes to enable
+
+warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
+  --> $DIR/feature-gate-return_type_notation.rs:4:12
+   |
+LL | #![feature(async_fn_in_trait)]
+   |            ^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
+   = note: `#[warn(incomplete_features)]` on by default
+
+error: aborting due to previous error; 1 warning emitted
+
+For more information about this error, try `rustc --explain E0658`.
diff --git a/tests/ui/feature-gates/feature-gate-return_type_notation.rs b/tests/ui/feature-gates/feature-gate-return_type_notation.rs
new file mode 100644
index 00000000000..b75feb130a6
--- /dev/null
+++ b/tests/ui/feature-gates/feature-gate-return_type_notation.rs
@@ -0,0 +1,15 @@
+// edition: 2021
+// revisions: cfg no
+
+#![feature(async_fn_in_trait)]
+//~^ WARN the feature `async_fn_in_trait` is incomplete
+
+trait Trait {
+    async fn m();
+}
+
+#[cfg(cfg)]
+fn foo<T: Trait<m(..): Send>>() {}
+//~^ ERROR return type notation is experimental
+
+fn main() {}
diff --git a/tests/ui/fn/fn-ptr-trait-int-float-infer-var.rs b/tests/ui/fn/fn-ptr-trait-int-float-infer-var.rs
new file mode 100644
index 00000000000..eec7da044c0
--- /dev/null
+++ b/tests/ui/fn/fn-ptr-trait-int-float-infer-var.rs
@@ -0,0 +1,10 @@
+// check-pass
+trait MyCmp {
+    fn cmp(&self) {}
+}
+impl MyCmp for f32 {}
+
+fn main() {
+    // Ensure that `impl<F: FnPtr> Ord for F` is never considered for int and float infer vars.
+    0.0.cmp();
+}
diff --git a/tests/ui/slightly-nice-generic-literal-messages.rs b/tests/ui/generics/slightly-nice-generic-literal-messages.rs
index 268009f65a5..268009f65a5 100644
--- a/tests/ui/slightly-nice-generic-literal-messages.rs
+++ b/tests/ui/generics/slightly-nice-generic-literal-messages.rs
diff --git a/tests/ui/slightly-nice-generic-literal-messages.stderr b/tests/ui/generics/slightly-nice-generic-literal-messages.stderr
index 83ef522ab46..83ef522ab46 100644
--- a/tests/ui/slightly-nice-generic-literal-messages.stderr
+++ b/tests/ui/generics/slightly-nice-generic-literal-messages.stderr
diff --git a/tests/ui/implied-bounds/normalization-nested.lifetime.stderr b/tests/ui/implied-bounds/normalization-nested.lifetime.stderr
new file mode 100644
index 00000000000..898e5e9511e
--- /dev/null
+++ b/tests/ui/implied-bounds/normalization-nested.lifetime.stderr
@@ -0,0 +1,18 @@
+error[E0759]: `fn` parameter has lifetime `'x` but it needs to satisfy a `'static` lifetime requirement
+  --> $DIR/normalization-nested.rs:35:20
+   |
+LL | pub fn test<'x>(_: Map<Vec<&'x ()>>, s: &'x str) -> &'static str {
+   |                    ^^^^^^^^^^^^^^^^
+   |                    |
+   |                    this data with lifetime `'x`...
+   |                    ...is used and required to live as long as `'static` here
+   |
+note: `'static` lifetime requirement introduced by this bound
+  --> $DIR/normalization-nested.rs:33:14
+   |
+LL |     I::Item: 'static;
+   |              ^^^^^^^
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0759`.
diff --git a/tests/ui/implied-bounds/normalization-nested.rs b/tests/ui/implied-bounds/normalization-nested.rs
new file mode 100644
index 00000000000..5f1cbb3f697
--- /dev/null
+++ b/tests/ui/implied-bounds/normalization-nested.rs
@@ -0,0 +1,39 @@
+// Test for normalization of projections that appear in the item bounds
+// (versus those that appear directly in the input types).
+// Both revisions should pass. `lifetime` revision is a bug.
+//
+// revisions: param_ty lifetime
+// [param_ty] check-pass
+// [lifetime] check-fail
+// [lifetime] known-bug: #109799
+
+pub trait Iter {
+    type Item;
+}
+
+#[cfg(param_ty)]
+impl<X, I> Iter for I
+where
+    I: IntoIterator<Item = X>,
+{
+    type Item = X;
+}
+
+#[cfg(lifetime)]
+impl<'x, I> Iter for I
+where
+    I: IntoIterator<Item = &'x ()>,
+{
+    type Item = &'x ();
+}
+
+pub struct Map<I>(I)
+where
+    I: Iter,
+    I::Item: 'static;
+
+pub fn test<'x>(_: Map<Vec<&'x ()>>, s: &'x str) -> &'static str {
+    s
+}
+
+fn main() {}
diff --git a/tests/ui/unterminated-comment.rs b/tests/ui/lexer/unterminated-comment.rs
index 1cfdfb1fb45..1cfdfb1fb45 100644
--- a/tests/ui/unterminated-comment.rs
+++ b/tests/ui/lexer/unterminated-comment.rs
diff --git a/tests/ui/unterminated-comment.stderr b/tests/ui/lexer/unterminated-comment.stderr
index c513fafeeb3..c513fafeeb3 100644
--- a/tests/ui/unterminated-comment.stderr
+++ b/tests/ui/lexer/unterminated-comment.stderr
diff --git a/tests/ui/unterminated-nested-comment.rs b/tests/ui/lexer/unterminated-nested-comment.rs
index db5f2f3ba13..db5f2f3ba13 100644
--- a/tests/ui/unterminated-nested-comment.rs
+++ b/tests/ui/lexer/unterminated-nested-comment.rs
diff --git a/tests/ui/unterminated-nested-comment.stderr b/tests/ui/lexer/unterminated-nested-comment.stderr
index 3653e76c9cb..3653e76c9cb 100644
--- a/tests/ui/unterminated-nested-comment.stderr
+++ b/tests/ui/lexer/unterminated-nested-comment.stderr
diff --git a/tests/ui/lifetimes/issue-93911.rs b/tests/ui/lifetimes/issue-93911.rs
new file mode 100644
index 00000000000..b7ccac1ee52
--- /dev/null
+++ b/tests/ui/lifetimes/issue-93911.rs
@@ -0,0 +1,18 @@
+// check-pass
+// edition:2021
+
+#![allow(dead_code)]
+
+struct Foo<'a>(&'a u32);
+
+impl<'a> Foo<'a> {
+    async fn foo() {
+        struct Bar<'b>(&'b u32);
+
+        impl<'b> Bar<'b> {
+            async fn bar() {}
+        }
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/lint/lint-temporary-cstring-as-ptr.rs b/tests/ui/lint/lint-temporary-cstring-as-ptr.rs
index 7aa4f2e1e00..fab792f1284 100644
--- a/tests/ui/lint/lint-temporary-cstring-as-ptr.rs
+++ b/tests/ui/lint/lint-temporary-cstring-as-ptr.rs
@@ -3,7 +3,15 @@
 
 use std::ffi::CString;
 
+macro_rules! mymacro {
+    () => {
+        let s = CString::new("some text").unwrap().as_ptr();
+        //~^ ERROR getting the inner pointer of a temporary `CString`
+    }
+}
+
 fn main() {
     let s = CString::new("some text").unwrap().as_ptr();
     //~^ ERROR getting the inner pointer of a temporary `CString`
+    mymacro!();
 }
diff --git a/tests/ui/lint/lint-temporary-cstring-as-ptr.stderr b/tests/ui/lint/lint-temporary-cstring-as-ptr.stderr
index 79ef57dd1a3..4e5c8aa0693 100644
--- a/tests/ui/lint/lint-temporary-cstring-as-ptr.stderr
+++ b/tests/ui/lint/lint-temporary-cstring-as-ptr.stderr
@@ -1,5 +1,5 @@
 error: getting the inner pointer of a temporary `CString`
-  --> $DIR/lint-temporary-cstring-as-ptr.rs:7:48
+  --> $DIR/lint-temporary-cstring-as-ptr.rs:14:48
    |
 LL |     let s = CString::new("some text").unwrap().as_ptr();
    |             ---------------------------------- ^^^^^^ this pointer will be invalid
@@ -14,5 +14,20 @@ note: the lint level is defined here
 LL | #![deny(temporary_cstring_as_ptr)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: aborting due to previous error
+error: getting the inner pointer of a temporary `CString`
+  --> $DIR/lint-temporary-cstring-as-ptr.rs:8:52
+   |
+LL |         let s = CString::new("some text").unwrap().as_ptr();
+   |                 ---------------------------------- ^^^^^^ this pointer will be invalid
+   |                 |
+   |                 this `CString` is deallocated at the end of the statement, bind it to a variable to extend its lifetime
+...
+LL |     mymacro!();
+   |     ---------- in this macro invocation
+   |
+   = note: pointers do not have a lifetime; when calling `as_ptr` the `CString` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned
+   = help: for more information, see https://doc.rust-lang.org/reference/destructors.html
+   = note: this error originates in the macro `mymacro` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: aborting due to 2 previous errors
 
diff --git a/tests/ui/lint/use-redundant/issue-92904.rs b/tests/ui/lint/use-redundant/issue-92904.rs
new file mode 100644
index 00000000000..511d9d263cf
--- /dev/null
+++ b/tests/ui/lint/use-redundant/issue-92904.rs
@@ -0,0 +1,17 @@
+// check-pass
+
+pub struct Foo(bar::Bar);
+
+pub mod bar {
+    pub struct Foo(pub Bar);
+    pub struct Bar(pub char);
+}
+
+pub fn warning() -> Foo {
+    use bar::*;
+    #[deny(unused_imports)]
+    use self::Foo; // no error
+    Foo(Bar('a'))
+}
+
+fn main() {}
diff --git a/tests/ui/lint/use-redundant/use-redundant-glob-parent.rs b/tests/ui/lint/use-redundant/use-redundant-glob-parent.rs
new file mode 100644
index 00000000000..6b1e018d2dc
--- /dev/null
+++ b/tests/ui/lint/use-redundant/use-redundant-glob-parent.rs
@@ -0,0 +1,16 @@
+// check-pass
+#![warn(unused_imports)]
+
+pub mod bar {
+    pub struct Foo(pub Bar);
+    pub struct Bar(pub char);
+}
+
+use bar::*;
+
+pub fn warning() -> Foo {
+    use bar::Foo; //~ WARNING imported redundantly
+    Foo(Bar('a'))
+}
+
+fn main() {}
diff --git a/tests/ui/lint/use-redundant/use-redundant-glob-parent.stderr b/tests/ui/lint/use-redundant/use-redundant-glob-parent.stderr
new file mode 100644
index 00000000000..2c3b3345270
--- /dev/null
+++ b/tests/ui/lint/use-redundant/use-redundant-glob-parent.stderr
@@ -0,0 +1,17 @@
+warning: the item `Foo` is imported redundantly
+  --> $DIR/use-redundant-glob-parent.rs:12:9
+   |
+LL | use bar::*;
+   |     ------ the item `Foo` is already imported here
+...
+LL |     use bar::Foo;
+   |         ^^^^^^^^
+   |
+note: the lint level is defined here
+  --> $DIR/use-redundant-glob-parent.rs:2:9
+   |
+LL | #![warn(unused_imports)]
+   |         ^^^^^^^^^^^^^^
+
+warning: 1 warning emitted
+
diff --git a/tests/ui/lint/use-redundant/use-redundant-glob.rs b/tests/ui/lint/use-redundant/use-redundant-glob.rs
new file mode 100644
index 00000000000..bd9e51b6f59
--- /dev/null
+++ b/tests/ui/lint/use-redundant/use-redundant-glob.rs
@@ -0,0 +1,15 @@
+// check-pass
+#![warn(unused_imports)]
+
+pub mod bar {
+    pub struct Foo(pub Bar);
+    pub struct Bar(pub char);
+}
+
+pub fn warning() -> bar::Foo {
+    use bar::*;
+    use bar::Foo; //~ WARNING imported redundantly
+    Foo(Bar('a'))
+}
+
+fn main() {}
diff --git a/tests/ui/lint/use-redundant/use-redundant-glob.stderr b/tests/ui/lint/use-redundant/use-redundant-glob.stderr
new file mode 100644
index 00000000000..d3b406d82b6
--- /dev/null
+++ b/tests/ui/lint/use-redundant/use-redundant-glob.stderr
@@ -0,0 +1,16 @@
+warning: the item `Foo` is imported redundantly
+  --> $DIR/use-redundant-glob.rs:11:9
+   |
+LL |     use bar::*;
+   |         ------ the item `Foo` is already imported here
+LL |     use bar::Foo;
+   |         ^^^^^^^^
+   |
+note: the lint level is defined here
+  --> $DIR/use-redundant-glob.rs:2:9
+   |
+LL | #![warn(unused_imports)]
+   |         ^^^^^^^^^^^^^^
+
+warning: 1 warning emitted
+
diff --git a/tests/ui/lint/use-redundant/use-redundant-multiple-namespaces.rs b/tests/ui/lint/use-redundant/use-redundant-multiple-namespaces.rs
new file mode 100644
index 00000000000..0fb60840f8a
--- /dev/null
+++ b/tests/ui/lint/use-redundant/use-redundant-multiple-namespaces.rs
@@ -0,0 +1,21 @@
+// check-pass
+#![allow(nonstandard_style)]
+
+pub mod bar {
+    pub struct Foo { pub bar: Bar }
+    pub struct Bar(pub char);
+}
+
+pub mod x {
+    use crate::bar;
+    pub const Foo: bar::Bar = bar::Bar('a');
+}
+
+pub fn warning() -> bar::Foo {
+    #![deny(unused_imports)] // no error
+    use bar::*;
+    use x::Foo;
+    Foo { bar: Foo }
+}
+
+fn main() {}
diff --git a/tests/ui/lint/use-redundant/use-redundant-not-parent.rs b/tests/ui/lint/use-redundant/use-redundant-not-parent.rs
new file mode 100644
index 00000000000..c97a3d34163
--- /dev/null
+++ b/tests/ui/lint/use-redundant/use-redundant-not-parent.rs
@@ -0,0 +1,19 @@
+// check-pass
+
+pub mod bar {
+    pub struct Foo(pub Bar);
+    pub struct Bar(pub char);
+}
+
+pub mod x {
+    pub struct Foo(pub crate::bar::Bar);
+}
+
+pub fn warning() -> x::Foo {
+    use bar::*;
+    #[deny(unused_imports)]
+    use x::Foo; // no error
+    Foo(Bar('a'))
+}
+
+fn main() {}
diff --git a/tests/ui/lint/use-redundant.rs b/tests/ui/lint/use-redundant/use-redundant.rs
index 53315dcf638..53315dcf638 100644
--- a/tests/ui/lint/use-redundant.rs
+++ b/tests/ui/lint/use-redundant/use-redundant.rs
diff --git a/tests/ui/lint/use-redundant.stderr b/tests/ui/lint/use-redundant/use-redundant.stderr
index c861a1956e1..c861a1956e1 100644
--- a/tests/ui/lint/use-redundant.stderr
+++ b/tests/ui/lint/use-redundant/use-redundant.stderr
diff --git a/tests/ui/mir/issue-109004-drop-large-array.rs b/tests/ui/mir/issue-109004-drop-large-array.rs
new file mode 100644
index 00000000000..5e3361cef6e
--- /dev/null
+++ b/tests/ui/mir/issue-109004-drop-large-array.rs
@@ -0,0 +1,16 @@
+// check-pass
+
+const SZ: usize = 64_000_000;
+type BigDrop = [String; SZ];
+
+fn f(_dropme: BigDrop) {}
+
+fn f2(_moveme: BigDrop) -> String {
+    let [a, ..] = _moveme;
+    a
+}
+
+fn main() {
+    f(std::array::from_fn(|_| String::new()));
+    f2(std::array::from_fn(|_| String::new()));
+}
diff --git a/tests/ui/mir/issue-109743.rs b/tests/ui/mir/issue-109743.rs
new file mode 100644
index 00000000000..73f3405e3ad
--- /dev/null
+++ b/tests/ui/mir/issue-109743.rs
@@ -0,0 +1,51 @@
+// build-pass
+// compile-flags: --crate-type=lib
+
+use std::marker::PhantomData;
+
+pub trait StreamOnce {
+    type Token;
+}
+
+impl StreamOnce for &str {
+    type Token = ();
+}
+
+pub trait Parser<Input: StreamOnce> {
+    type PartialState: Default;
+    fn parse_mode(&self, _state: &Self::PartialState) {}
+    fn parse_mode_impl() {}
+}
+
+pub fn parse_bool<'a>() -> impl Parser<&'a str> {
+    pub struct TokensCmp<C, Input>
+    where
+        Input: StreamOnce,
+    {
+        _cmp: C,
+        _marker: PhantomData<Input>,
+    }
+
+    impl<Input, C> Parser<Input> for TokensCmp<C, Input>
+    where
+        C: FnMut(Input::Token),
+        Input: StreamOnce,
+    {
+        type PartialState = ();
+    }
+
+    TokensCmp { _cmp: |_| (), _marker: PhantomData }
+}
+
+pub struct ParseBool;
+
+impl<'a> Parser<&'a str> for ParseBool
+where
+    &'a str: StreamOnce,
+{
+    type PartialState = ();
+
+    fn parse_mode_impl() {
+        parse_bool().parse_mode(&Default::default())
+    }
+}
diff --git a/tests/ui/nll/user-annotations/region-error-ice-109072.rs b/tests/ui/nll/user-annotations/region-error-ice-109072.rs
new file mode 100644
index 00000000000..3f2ad3ccbf5
--- /dev/null
+++ b/tests/ui/nll/user-annotations/region-error-ice-109072.rs
@@ -0,0 +1,14 @@
+// Regression test for #109072.
+// Check that we don't ICE when canonicalizing user annotation.
+
+trait Lt<'a> {
+    type T;
+}
+
+impl Lt<'missing> for () { //~ ERROR undeclared lifetime
+    type T = &'missing (); //~ ERROR undeclared lifetime
+}
+
+fn main() {
+    let _: <() as Lt<'_>>::T = &();
+}
diff --git a/tests/ui/nll/user-annotations/region-error-ice-109072.stderr b/tests/ui/nll/user-annotations/region-error-ice-109072.stderr
new file mode 100644
index 00000000000..d90971bed25
--- /dev/null
+++ b/tests/ui/nll/user-annotations/region-error-ice-109072.stderr
@@ -0,0 +1,26 @@
+error[E0261]: use of undeclared lifetime name `'missing`
+  --> $DIR/region-error-ice-109072.rs:8:9
+   |
+LL | impl Lt<'missing> for () {
+   |     -   ^^^^^^^^ undeclared lifetime
+   |     |
+   |     help: consider introducing lifetime `'missing` here: `<'missing>`
+
+error[E0261]: use of undeclared lifetime name `'missing`
+  --> $DIR/region-error-ice-109072.rs:9:15
+   |
+LL |     type T = &'missing ();
+   |               ^^^^^^^^ undeclared lifetime
+   |
+help: consider introducing lifetime `'missing` here
+   |
+LL |     type T<'missing> = &'missing ();
+   |           ++++++++++
+help: consider introducing lifetime `'missing` here
+   |
+LL | impl<'missing> Lt<'missing> for () {
+   |     ++++++++++
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0261`.
diff --git a/tests/ui/auxiliary/xc-private-method-lib.rs b/tests/ui/privacy/auxiliary/xc-private-method-lib.rs
index 4d5ec6de392..4d5ec6de392 100644
--- a/tests/ui/auxiliary/xc-private-method-lib.rs
+++ b/tests/ui/privacy/auxiliary/xc-private-method-lib.rs
diff --git a/tests/ui/xc-private-method.rs b/tests/ui/privacy/xc-private-method.rs
index f05994646b3..f05994646b3 100644
--- a/tests/ui/xc-private-method.rs
+++ b/tests/ui/privacy/xc-private-method.rs
diff --git a/tests/ui/xc-private-method.stderr b/tests/ui/privacy/xc-private-method.stderr
index 0eabc592aa4..0eabc592aa4 100644
--- a/tests/ui/xc-private-method.stderr
+++ b/tests/ui/privacy/xc-private-method.stderr
diff --git a/tests/ui/xc-private-method2.rs b/tests/ui/privacy/xc-private-method2.rs
index f11b251082b..f11b251082b 100644
--- a/tests/ui/xc-private-method2.rs
+++ b/tests/ui/privacy/xc-private-method2.rs
diff --git a/tests/ui/xc-private-method2.stderr b/tests/ui/privacy/xc-private-method2.stderr
index af0c3cfcb2c..af0c3cfcb2c 100644
--- a/tests/ui/xc-private-method2.stderr
+++ b/tests/ui/privacy/xc-private-method2.stderr
diff --git a/tests/ui/reachable-unnameable-type-alias.rs b/tests/ui/reachable/reachable-unnameable-type-alias.rs
index 461355f87cf..461355f87cf 100644
--- a/tests/ui/reachable-unnameable-type-alias.rs
+++ b/tests/ui/reachable/reachable-unnameable-type-alias.rs
diff --git a/tests/ui/disambiguate-identical-names.rs b/tests/ui/resolve/disambiguate-identical-names.rs
index 708d2cd76a1..708d2cd76a1 100644
--- a/tests/ui/disambiguate-identical-names.rs
+++ b/tests/ui/resolve/disambiguate-identical-names.rs
diff --git a/tests/ui/disambiguate-identical-names.stderr b/tests/ui/resolve/disambiguate-identical-names.stderr
index 7d8293018d2..7d8293018d2 100644
--- a/tests/ui/disambiguate-identical-names.stderr
+++ b/tests/ui/resolve/disambiguate-identical-names.stderr
diff --git a/tests/ui/rfc-2008-non-exhaustive/omitted-patterns.rs b/tests/ui/rfc-2008-non-exhaustive/omitted-patterns.rs
index d8f07bb8f24..3482af74752 100644
--- a/tests/ui/rfc-2008-non-exhaustive/omitted-patterns.rs
+++ b/tests/ui/rfc-2008-non-exhaustive/omitted-patterns.rs
@@ -184,4 +184,28 @@ fn main() {
     // OK: both unstable and stable fields are matched with feature on
     #[warn(non_exhaustive_omitted_patterns)]
     let UnstableStruct { stable, stable2, unstable, .. } = UnstableStruct::default();
+
+    // Ok: local bindings are allowed
+    #[deny(non_exhaustive_omitted_patterns)]
+    let local = NonExhaustiveEnum::Unit;
+
+    // Ok: missing patterns will be blocked by the pattern being refutable
+    #[deny(non_exhaustive_omitted_patterns)]
+    let local_refutable @ NonExhaustiveEnum::Unit = NonExhaustiveEnum::Unit;
+    //~^ refutable pattern in local binding
+
+    // Check that matching on a reference results in a correctly spanned diagnostic
+    #[deny(non_exhaustive_omitted_patterns)]
+    match &non_enum {
+        NonExhaustiveEnum::Unit => {}
+        NonExhaustiveEnum::Tuple(_) => {}
+        _ => {}
+    }
+    //~^^ some variants are not matched explicitly
+}
+
+#[deny(non_exhaustive_omitted_patterns)]
+// Ok: Pattern in a param is always wildcard
+pub fn takes_non_exhaustive(_: NonExhaustiveEnum) {
+    let _closure = |_: NonExhaustiveEnum| {};
 }
diff --git a/tests/ui/rfc-2008-non-exhaustive/omitted-patterns.stderr b/tests/ui/rfc-2008-non-exhaustive/omitted-patterns.stderr
index 996bd4a1298..520a90322c1 100644
--- a/tests/ui/rfc-2008-non-exhaustive/omitted-patterns.stderr
+++ b/tests/ui/rfc-2008-non-exhaustive/omitted-patterns.stderr
@@ -184,5 +184,34 @@ note: the lint level is defined here
 LL |     #[deny(non_exhaustive_omitted_patterns)]
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: aborting due to 8 previous errors; 6 warnings emitted
+error[E0005]: refutable pattern in local binding
+  --> $DIR/omitted-patterns.rs:194:9
+   |
+LL |     let local_refutable @ NonExhaustiveEnum::Unit = NonExhaustiveEnum::Unit;
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ pattern `_` not covered
+   |
+   = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
+   = note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
+   = note: the matched value is of type `NonExhaustiveEnum`
+help: you might want to use `let else` to handle the variant that isn't matched
+   |
+LL |     let local_refutable @ NonExhaustiveEnum::Unit = NonExhaustiveEnum::Unit else { todo!() };
+   |                                                                             ++++++++++++++++
+
+error: some variants are not matched explicitly
+  --> $DIR/omitted-patterns.rs:202:9
+   |
+LL |         _ => {}
+   |         ^ pattern `NonExhaustiveEnum::Struct { .. }` not covered
+   |
+   = help: ensure that all variants are matched explicitly by adding the suggested match arms
+   = note: the matched value is of type `NonExhaustiveEnum` and the `non_exhaustive_omitted_patterns` attribute was found
+note: the lint level is defined here
+  --> $DIR/omitted-patterns.rs:198:12
+   |
+LL |     #[deny(non_exhaustive_omitted_patterns)]
+   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to 10 previous errors; 6 warnings emitted
 
+For more information about this error, try `rustc --explain E0005`.
diff --git a/tests/ui/rustdoc/doc-primitive.rs b/tests/ui/rustdoc/doc-primitive.rs
new file mode 100644
index 00000000000..4336961e3b5
--- /dev/null
+++ b/tests/ui/rustdoc/doc-primitive.rs
@@ -0,0 +1,8 @@
+#![deny(invalid_doc_attributes)]
+
+#[doc(primitive = "foo")]
+//~^ ERROR unknown `doc` attribute `primitive`
+//~| WARN
+mod bar {}
+
+fn main() {}
diff --git a/tests/ui/rustdoc/doc-primitive.stderr b/tests/ui/rustdoc/doc-primitive.stderr
new file mode 100644
index 00000000000..d61eb381647
--- /dev/null
+++ b/tests/ui/rustdoc/doc-primitive.stderr
@@ -0,0 +1,16 @@
+error: unknown `doc` attribute `primitive`
+  --> $DIR/doc-primitive.rs:3:7
+   |
+LL | #[doc(primitive = "foo")]
+   |       ^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #82730 <https://github.com/rust-lang/rust/issues/82730>
+note: the lint level is defined here
+  --> $DIR/doc-primitive.rs:1:9
+   |
+LL | #![deny(invalid_doc_attributes)]
+   |         ^^^^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/rustdoc/feature-gate-doc_primitive.rs b/tests/ui/rustdoc/feature-gate-doc_primitive.rs
index 18e99e72f8b..78fcd90752e 100644
--- a/tests/ui/rustdoc/feature-gate-doc_primitive.rs
+++ b/tests/ui/rustdoc/feature-gate-doc_primitive.rs
@@ -1,7 +1,5 @@
-// check-pass
-#[doc(primitive = "usize")]
-//~^ WARNING `doc(primitive)` should never have been stable
-//~| WARNING hard error in a future release
+#[rustc_doc_primitive = "usize"]
+//~^ ERROR `rustc_doc_primitive` is a rustc internal attribute
 /// Some docs
 mod usize {}
 
diff --git a/tests/ui/rustdoc/feature-gate-doc_primitive.stderr b/tests/ui/rustdoc/feature-gate-doc_primitive.stderr
index 194b2d87db2..5920880675d 100644
--- a/tests/ui/rustdoc/feature-gate-doc_primitive.stderr
+++ b/tests/ui/rustdoc/feature-gate-doc_primitive.stderr
@@ -1,12 +1,11 @@
-warning: `doc(primitive)` should never have been stable
-  --> $DIR/feature-gate-doc_primitive.rs:2:7
+error[E0658]: `rustc_doc_primitive` is a rustc internal attribute
+  --> $DIR/feature-gate-doc_primitive.rs:1:1
    |
-LL | #[doc(primitive = "usize")]
-   |       ^^^^^^^^^^^^^^^^^^^
+LL | #[rustc_doc_primitive = "usize"]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #82730 <https://github.com/rust-lang/rust/issues/82730>
-   = note: `#[warn(invalid_doc_attributes)]` on by default
+   = help: add `#![feature(rustc_attrs)]` to the crate attributes to enable
 
-warning: 1 warning emitted
+error: aborting due to previous error
 
+For more information about this error, try `rustc --explain E0658`.
diff --git a/tests/ui/stats/hir-stats.stderr b/tests/ui/stats/hir-stats.stderr
index ee62d8f2d25..d723ff538a8 100644
--- a/tests/ui/stats/hir-stats.stderr
+++ b/tests/ui/stats/hir-stats.stderr
@@ -15,45 +15,45 @@ ast-stats-1 Arm                       96 ( 1.5%)             2            48
 ast-stats-1 ForeignItem               96 ( 1.5%)             1            96
 ast-stats-1 - Fn                        96 ( 1.5%)             1
 ast-stats-1 FnDecl                   120 ( 1.8%)             5            24
-ast-stats-1 FieldDef                 160 ( 2.4%)             2            80
-ast-stats-1 Stmt                     160 ( 2.4%)             5            32
+ast-stats-1 FieldDef                 160 ( 2.5%)             2            80
+ast-stats-1 Stmt                     160 ( 2.5%)             5            32
 ast-stats-1 - Local                     32 ( 0.5%)             1
 ast-stats-1 - MacCall                   32 ( 0.5%)             1
 ast-stats-1 - Expr                      96 ( 1.5%)             3
-ast-stats-1 Param                    160 ( 2.4%)             4            40
-ast-stats-1 Block                    192 ( 2.9%)             6            32
+ast-stats-1 Param                    160 ( 2.5%)             4            40
+ast-stats-1 Block                    192 ( 3.0%)             6            32
 ast-stats-1 Variant                  208 ( 3.2%)             2           104
-ast-stats-1 GenericBound             224 ( 3.4%)             4            56
-ast-stats-1 - Trait                    224 ( 3.4%)             4
-ast-stats-1 AssocItem                416 ( 6.3%)             4           104
-ast-stats-1 - Type                     208 ( 3.2%)             2
-ast-stats-1 - Fn                       208 ( 3.2%)             2
-ast-stats-1 GenericParam             480 ( 7.3%)             5            96
-ast-stats-1 Pat                      504 ( 7.7%)             7            72
+ast-stats-1 GenericBound             224 ( 3.5%)             4            56
+ast-stats-1 - Trait                    224 ( 3.5%)             4
+ast-stats-1 AssocItem                352 ( 5.4%)             4            88
+ast-stats-1 - Type                     176 ( 2.7%)             2
+ast-stats-1 - Fn                       176 ( 2.7%)             2
+ast-stats-1 GenericParam             480 ( 7.4%)             5            96
+ast-stats-1 Pat                      504 ( 7.8%)             7            72
 ast-stats-1 - Struct                    72 ( 1.1%)             1
 ast-stats-1 - Wild                      72 ( 1.1%)             1
 ast-stats-1 - Ident                    360 ( 5.5%)             5
-ast-stats-1 Expr                     576 ( 8.8%)             8            72
+ast-stats-1 Expr                     576 ( 8.9%)             8            72
 ast-stats-1 - Path                      72 ( 1.1%)             1
 ast-stats-1 - Match                     72 ( 1.1%)             1
 ast-stats-1 - Struct                    72 ( 1.1%)             1
 ast-stats-1 - Lit                      144 ( 2.2%)             2
 ast-stats-1 - Block                    216 ( 3.3%)             3
-ast-stats-1 PathSegment              720 (11.0%)            30            24
-ast-stats-1 Ty                       896 (13.7%)            14            64
+ast-stats-1 PathSegment              720 (11.1%)            30            24
+ast-stats-1 Ty                       896 (13.8%)            14            64
 ast-stats-1 - Ptr                       64 ( 1.0%)             1
 ast-stats-1 - Ref                       64 ( 1.0%)             1
 ast-stats-1 - ImplicitSelf             128 ( 2.0%)             2
-ast-stats-1 - Path                     640 ( 9.8%)            10
-ast-stats-1 Item                   1_224 (18.7%)             9           136
+ast-stats-1 - Path                     640 ( 9.9%)            10
+ast-stats-1 Item                   1_224 (18.9%)             9           136
 ast-stats-1 - Trait                    136 ( 2.1%)             1
 ast-stats-1 - Enum                     136 ( 2.1%)             1
 ast-stats-1 - ForeignMod               136 ( 2.1%)             1
 ast-stats-1 - Impl                     136 ( 2.1%)             1
 ast-stats-1 - Fn                       272 ( 4.2%)             2
-ast-stats-1 - Use                      408 ( 6.2%)             3
+ast-stats-1 - Use                      408 ( 6.3%)             3
 ast-stats-1 ----------------------------------------------------------------
-ast-stats-1 Total                  6_552
+ast-stats-1 Total                  6_488
 ast-stats-1
 ast-stats-2 POST EXPANSION AST STATS
 ast-stats-2 Name                Accumulated Size         Count     Item Size
@@ -65,32 +65,32 @@ ast-stats-2 ExprField                 48 ( 0.7%)             1            48
 ast-stats-2 WherePredicate            56 ( 0.8%)             1            56
 ast-stats-2 - BoundPredicate            56 ( 0.8%)             1
 ast-stats-2 Local                     72 ( 1.0%)             1            72
-ast-stats-2 Arm                       96 ( 1.3%)             2            48
-ast-stats-2 ForeignItem               96 ( 1.3%)             1            96
-ast-stats-2 - Fn                        96 ( 1.3%)             1
+ast-stats-2 Arm                       96 ( 1.4%)             2            48
+ast-stats-2 ForeignItem               96 ( 1.4%)             1            96
+ast-stats-2 - Fn                        96 ( 1.4%)             1
 ast-stats-2 InlineAsm                120 ( 1.7%)             1           120
 ast-stats-2 FnDecl                   120 ( 1.7%)             5            24
 ast-stats-2 Attribute                128 ( 1.8%)             4            32
-ast-stats-2 - DocComment                32 ( 0.4%)             1
-ast-stats-2 - Normal                    96 ( 1.3%)             3
-ast-stats-2 FieldDef                 160 ( 2.2%)             2            80
-ast-stats-2 Stmt                     160 ( 2.2%)             5            32
-ast-stats-2 - Local                     32 ( 0.4%)             1
-ast-stats-2 - Semi                      32 ( 0.4%)             1
-ast-stats-2 - Expr                      96 ( 1.3%)             3
-ast-stats-2 Param                    160 ( 2.2%)             4            40
+ast-stats-2 - DocComment                32 ( 0.5%)             1
+ast-stats-2 - Normal                    96 ( 1.4%)             3
+ast-stats-2 FieldDef                 160 ( 2.3%)             2            80
+ast-stats-2 Stmt                     160 ( 2.3%)             5            32
+ast-stats-2 - Local                     32 ( 0.5%)             1
+ast-stats-2 - Semi                      32 ( 0.5%)             1
+ast-stats-2 - Expr                      96 ( 1.4%)             3
+ast-stats-2 Param                    160 ( 2.3%)             4            40
 ast-stats-2 Block                    192 ( 2.7%)             6            32
 ast-stats-2 Variant                  208 ( 2.9%)             2           104
-ast-stats-2 GenericBound             224 ( 3.1%)             4            56
-ast-stats-2 - Trait                    224 ( 3.1%)             4
-ast-stats-2 AssocItem                416 ( 5.8%)             4           104
-ast-stats-2 - Type                     208 ( 2.9%)             2
-ast-stats-2 - Fn                       208 ( 2.9%)             2
-ast-stats-2 GenericParam             480 ( 6.7%)             5            96
-ast-stats-2 Pat                      504 ( 7.0%)             7            72
+ast-stats-2 GenericBound             224 ( 3.2%)             4            56
+ast-stats-2 - Trait                    224 ( 3.2%)             4
+ast-stats-2 AssocItem                352 ( 5.0%)             4            88
+ast-stats-2 - Type                     176 ( 2.5%)             2
+ast-stats-2 - Fn                       176 ( 2.5%)             2
+ast-stats-2 GenericParam             480 ( 6.8%)             5            96
+ast-stats-2 Pat                      504 ( 7.1%)             7            72
 ast-stats-2 - Struct                    72 ( 1.0%)             1
 ast-stats-2 - Wild                      72 ( 1.0%)             1
-ast-stats-2 - Ident                    360 ( 5.0%)             5
+ast-stats-2 - Ident                    360 ( 5.1%)             5
 ast-stats-2 Expr                     648 ( 9.1%)             9            72
 ast-stats-2 - Path                      72 ( 1.0%)             1
 ast-stats-2 - Match                     72 ( 1.0%)             1
@@ -98,22 +98,22 @@ ast-stats-2 - Struct                    72 ( 1.0%)             1
 ast-stats-2 - InlineAsm                 72 ( 1.0%)             1
 ast-stats-2 - Lit                      144 ( 2.0%)             2
 ast-stats-2 - Block                    216 ( 3.0%)             3
-ast-stats-2 PathSegment              792 (11.1%)            33            24
-ast-stats-2 Ty                       896 (12.5%)            14            64
+ast-stats-2 PathSegment              792 (11.2%)            33            24
+ast-stats-2 Ty                       896 (12.6%)            14            64
 ast-stats-2 - Ptr                       64 ( 0.9%)             1
 ast-stats-2 - Ref                       64 ( 0.9%)             1
 ast-stats-2 - ImplicitSelf             128 ( 1.8%)             2
-ast-stats-2 - Path                     640 ( 8.9%)            10
-ast-stats-2 Item                   1_496 (20.9%)            11           136
+ast-stats-2 - Path                     640 ( 9.0%)            10
+ast-stats-2 Item                   1_496 (21.1%)            11           136
 ast-stats-2 - Trait                    136 ( 1.9%)             1
 ast-stats-2 - Enum                     136 ( 1.9%)             1
 ast-stats-2 - ExternCrate              136 ( 1.9%)             1
 ast-stats-2 - ForeignMod               136 ( 1.9%)             1
 ast-stats-2 - Impl                     136 ( 1.9%)             1
 ast-stats-2 - Fn                       272 ( 3.8%)             2
-ast-stats-2 - Use                      544 ( 7.6%)             4
+ast-stats-2 - Use                      544 ( 7.7%)             4
 ast-stats-2 ----------------------------------------------------------------
-ast-stats-2 Total                  7_152
+ast-stats-2 Total                  7_088
 ast-stats-2
 hir-stats HIR STATS
 hir-stats Name                Accumulated Size         Count     Item Size
diff --git a/tests/ui/thread-local-mutation.rs b/tests/ui/thread-local/thread-local-mutation.rs
index e738225ce2a..e738225ce2a 100644
--- a/tests/ui/thread-local-mutation.rs
+++ b/tests/ui/thread-local/thread-local-mutation.rs
diff --git a/tests/ui/thread-local-mutation.stderr b/tests/ui/thread-local/thread-local-mutation.stderr
index e5dc0e72edf..e5dc0e72edf 100644
--- a/tests/ui/thread-local-mutation.stderr
+++ b/tests/ui/thread-local/thread-local-mutation.stderr
diff --git a/tests/ui/thread-local-static.rs b/tests/ui/thread-local/thread-local-static.rs
index c7fee9e6b4c..c7fee9e6b4c 100644
--- a/tests/ui/thread-local-static.rs
+++ b/tests/ui/thread-local/thread-local-static.rs
diff --git a/tests/ui/thread-local-static.stderr b/tests/ui/thread-local/thread-local-static.stderr
index 712050a25fc..712050a25fc 100644
--- a/tests/ui/thread-local-static.stderr
+++ b/tests/ui/thread-local/thread-local-static.stderr
diff --git a/tests/ui/wrong-mul-method-signature.rs b/tests/ui/traits/wrong-mul-method-signature.rs
index 1c2f865599e..1c2f865599e 100644
--- a/tests/ui/wrong-mul-method-signature.rs
+++ b/tests/ui/traits/wrong-mul-method-signature.rs
diff --git a/tests/ui/wrong-mul-method-signature.stderr b/tests/ui/traits/wrong-mul-method-signature.stderr
index 25a92f5ec12..25a92f5ec12 100644
--- a/tests/ui/wrong-mul-method-signature.stderr
+++ b/tests/ui/traits/wrong-mul-method-signature.stderr
diff --git a/tests/ui/tuple-index.rs b/tests/ui/tuple/tuple-index.rs
index 3e1d92b42aa..3e1d92b42aa 100644
--- a/tests/ui/tuple-index.rs
+++ b/tests/ui/tuple/tuple-index.rs
diff --git a/tests/ui/output-type-mismatch.rs b/tests/ui/typeck/output-type-mismatch.rs
index 35097aa9ec6..35097aa9ec6 100644
--- a/tests/ui/output-type-mismatch.rs
+++ b/tests/ui/typeck/output-type-mismatch.rs
diff --git a/tests/ui/output-type-mismatch.stderr b/tests/ui/typeck/output-type-mismatch.stderr
index 4507a4df621..4507a4df621 100644
--- a/tests/ui/output-type-mismatch.stderr
+++ b/tests/ui/typeck/output-type-mismatch.stderr
diff --git a/tests/ui/suppressed-error.rs b/tests/ui/typeck/suppressed-error.rs
index 1e39be46080..1e39be46080 100644
--- a/tests/ui/suppressed-error.rs
+++ b/tests/ui/typeck/suppressed-error.rs
diff --git a/tests/ui/suppressed-error.stderr b/tests/ui/typeck/suppressed-error.stderr
index 11d70f8a433..11d70f8a433 100644
--- a/tests/ui/suppressed-error.stderr
+++ b/tests/ui/typeck/suppressed-error.stderr
diff --git a/tests/ui/tag-that-dare-not-speak-its-name.rs b/tests/ui/typeck/tag-that-dare-not-speak-its-name.rs
index 0e76ec246d7..0e76ec246d7 100644
--- a/tests/ui/tag-that-dare-not-speak-its-name.rs
+++ b/tests/ui/typeck/tag-that-dare-not-speak-its-name.rs
diff --git a/tests/ui/tag-that-dare-not-speak-its-name.stderr b/tests/ui/typeck/tag-that-dare-not-speak-its-name.stderr
index f53abe53bf1..f53abe53bf1 100644
--- a/tests/ui/tag-that-dare-not-speak-its-name.stderr
+++ b/tests/ui/typeck/tag-that-dare-not-speak-its-name.stderr
diff --git a/tests/ui/terr-in-field.rs b/tests/ui/typeck/terr-in-field.rs
index cfe350ef86d..cfe350ef86d 100644
--- a/tests/ui/terr-in-field.rs
+++ b/tests/ui/typeck/terr-in-field.rs
diff --git a/tests/ui/terr-in-field.stderr b/tests/ui/typeck/terr-in-field.stderr
index 09df4b34bb5..09df4b34bb5 100644
--- a/tests/ui/terr-in-field.stderr
+++ b/tests/ui/typeck/terr-in-field.stderr
diff --git a/tests/ui/terr-sorts.rs b/tests/ui/typeck/terr-sorts.rs
index c1e2f7daee5..c1e2f7daee5 100644
--- a/tests/ui/terr-sorts.rs
+++ b/tests/ui/typeck/terr-sorts.rs
diff --git a/tests/ui/terr-sorts.stderr b/tests/ui/typeck/terr-sorts.stderr
index 8f1975374a5..8f1975374a5 100644
--- a/tests/ui/terr-sorts.stderr
+++ b/tests/ui/typeck/terr-sorts.stderr
diff --git a/tests/ui/while-type-error.rs b/tests/ui/typeck/while-type-error.rs
index 8098bfcd8d9..8098bfcd8d9 100644
--- a/tests/ui/while-type-error.rs
+++ b/tests/ui/typeck/while-type-error.rs
diff --git a/tests/ui/while-type-error.stderr b/tests/ui/typeck/while-type-error.stderr
index 529cbff0563..529cbff0563 100644
--- a/tests/ui/while-type-error.stderr
+++ b/tests/ui/typeck/while-type-error.stderr
diff --git a/tests/ui/wrong-ret-type.rs b/tests/ui/typeck/wrong-ret-type.rs
index cbff8dbae21..cbff8dbae21 100644
--- a/tests/ui/wrong-ret-type.rs
+++ b/tests/ui/typeck/wrong-ret-type.rs
diff --git a/tests/ui/wrong-ret-type.stderr b/tests/ui/typeck/wrong-ret-type.stderr
index c686a0b2f5a..c686a0b2f5a 100644
--- a/tests/ui/wrong-ret-type.stderr
+++ b/tests/ui/typeck/wrong-ret-type.stderr
diff --git a/tests/ui/ufcs-polymorphic-paths.rs b/tests/ui/ufcs/ufcs-polymorphic-paths.rs
index a14ebd6a41f..a14ebd6a41f 100644
--- a/tests/ui/ufcs-polymorphic-paths.rs
+++ b/tests/ui/ufcs/ufcs-polymorphic-paths.rs
diff --git a/tests/ui/expr-block-generic-unique1.rs b/tests/ui/unique/expr-block-generic-unique1.rs
index 14603a2c71f..14603a2c71f 100644
--- a/tests/ui/expr-block-generic-unique1.rs
+++ b/tests/ui/unique/expr-block-generic-unique1.rs
diff --git a/tests/ui/expr-block-generic-unique2.rs b/tests/ui/unique/expr-block-generic-unique2.rs
index 7879c144b10..7879c144b10 100644
--- a/tests/ui/expr-block-generic-unique2.rs
+++ b/tests/ui/unique/expr-block-generic-unique2.rs
diff --git a/tests/ui/expr-if-unique.rs b/tests/ui/unique/expr-if-unique.rs
index 86232683549..86232683549 100644
--- a/tests/ui/expr-if-unique.rs
+++ b/tests/ui/unique/expr-if-unique.rs
diff --git a/tests/ui/unique-object-noncopyable.rs b/tests/ui/unique/unique-object-noncopyable.rs
index 2c40dfc7a4b..2c40dfc7a4b 100644
--- a/tests/ui/unique-object-noncopyable.rs
+++ b/tests/ui/unique/unique-object-noncopyable.rs
diff --git a/tests/ui/unique-object-noncopyable.stderr b/tests/ui/unique/unique-object-noncopyable.stderr
index db42ed9baf1..db42ed9baf1 100644
--- a/tests/ui/unique-object-noncopyable.stderr
+++ b/tests/ui/unique/unique-object-noncopyable.stderr
diff --git a/tests/ui/unique-pinned-nocopy.rs b/tests/ui/unique/unique-pinned-nocopy.rs
index 8edaeef51e0..8edaeef51e0 100644
--- a/tests/ui/unique-pinned-nocopy.rs
+++ b/tests/ui/unique/unique-pinned-nocopy.rs
diff --git a/tests/ui/unique-pinned-nocopy.stderr b/tests/ui/unique/unique-pinned-nocopy.stderr
index de6611324ca..de6611324ca 100644
--- a/tests/ui/unique-pinned-nocopy.stderr
+++ b/tests/ui/unique/unique-pinned-nocopy.stderr
diff --git a/tests/ui/unwind-unique.rs b/tests/ui/unique/unwind-unique.rs
index 50ecf751a86..50ecf751a86 100644
--- a/tests/ui/unwind-unique.rs
+++ b/tests/ui/unique/unwind-unique.rs
diff --git a/tests/ui/mir-unpretty.rs b/tests/ui/unpretty/mir-unpretty.rs
index 30620c69fea..30620c69fea 100644
--- a/tests/ui/mir-unpretty.rs
+++ b/tests/ui/unpretty/mir-unpretty.rs
diff --git a/tests/ui/mir-unpretty.stderr b/tests/ui/unpretty/mir-unpretty.stderr
index 3808f8583b8..3808f8583b8 100644
--- a/tests/ui/mir-unpretty.stderr
+++ b/tests/ui/unpretty/mir-unpretty.stderr
diff --git a/tests/ui/unpretty-expr-fn-arg.rs b/tests/ui/unpretty/unpretty-expr-fn-arg.rs
index 6e1132a3372..6e1132a3372 100644
--- a/tests/ui/unpretty-expr-fn-arg.rs
+++ b/tests/ui/unpretty/unpretty-expr-fn-arg.rs
diff --git a/tests/ui/unpretty-expr-fn-arg.stdout b/tests/ui/unpretty/unpretty-expr-fn-arg.stdout
index b745b988631..b745b988631 100644
--- a/tests/ui/unpretty-expr-fn-arg.stdout
+++ b/tests/ui/unpretty/unpretty-expr-fn-arg.stdout
diff --git a/tests/ui/foreign-unsafe-fn-called.mir.stderr b/tests/ui/unsafe/foreign-unsafe-fn-called.mir.stderr
index d3cf5d84fdd..d3cf5d84fdd 100644
--- a/tests/ui/foreign-unsafe-fn-called.mir.stderr
+++ b/tests/ui/unsafe/foreign-unsafe-fn-called.mir.stderr
diff --git a/tests/ui/foreign-unsafe-fn-called.rs b/tests/ui/unsafe/foreign-unsafe-fn-called.rs
index 67302ea1bcd..67302ea1bcd 100644
--- a/tests/ui/foreign-unsafe-fn-called.rs
+++ b/tests/ui/unsafe/foreign-unsafe-fn-called.rs
diff --git a/tests/ui/foreign-unsafe-fn-called.thir.stderr b/tests/ui/unsafe/foreign-unsafe-fn-called.thir.stderr
index 00ba0f7a6a3..00ba0f7a6a3 100644
--- a/tests/ui/foreign-unsafe-fn-called.thir.stderr
+++ b/tests/ui/unsafe/foreign-unsafe-fn-called.thir.stderr
diff --git a/tests/ui/new-unsafe-pointers.rs b/tests/ui/unsafe/new-unsafe-pointers.rs
index d99eb4cbd1c..d99eb4cbd1c 100644
--- a/tests/ui/new-unsafe-pointers.rs
+++ b/tests/ui/unsafe/new-unsafe-pointers.rs
diff --git a/tests/ui/unsafe-fn-called-from-unsafe-blk.rs b/tests/ui/unsafe/unsafe-fn-called-from-unsafe-blk.rs
index 3713a7065f5..3713a7065f5 100644
--- a/tests/ui/unsafe-fn-called-from-unsafe-blk.rs
+++ b/tests/ui/unsafe/unsafe-fn-called-from-unsafe-blk.rs
diff --git a/tests/ui/unsafe-fn-called-from-unsafe-fn.rs b/tests/ui/unsafe/unsafe-fn-called-from-unsafe-fn.rs
index 5e953107686..5e953107686 100644
--- a/tests/ui/unsafe-fn-called-from-unsafe-fn.rs
+++ b/tests/ui/unsafe/unsafe-fn-called-from-unsafe-fn.rs
diff --git a/tests/ui/unsafe-pointer-assignability.rs b/tests/ui/unsafe/unsafe-pointer-assignability.rs
index db822bb6a02..db822bb6a02 100644
--- a/tests/ui/unsafe-pointer-assignability.rs
+++ b/tests/ui/unsafe/unsafe-pointer-assignability.rs
diff --git a/tests/ui/variance-intersection-of-ref-and-opt-ref.rs b/tests/ui/variance/variance-intersection-of-ref-and-opt-ref.rs
index 74707a98d32..74707a98d32 100644
--- a/tests/ui/variance-intersection-of-ref-and-opt-ref.rs
+++ b/tests/ui/variance/variance-intersection-of-ref-and-opt-ref.rs
diff --git a/tests/ui/variance-iterators-in-libcore.rs b/tests/ui/variance/variance-iterators-in-libcore.rs
index a542e44d517..a542e44d517 100644
--- a/tests/ui/variance-iterators-in-libcore.rs
+++ b/tests/ui/variance/variance-iterators-in-libcore.rs
diff --git a/tests/ui/wasm-custom-section-relocations.rs b/tests/ui/wasm/wasm-custom-section-relocations.rs
index c3cca3a35ac..c3cca3a35ac 100644
--- a/tests/ui/wasm-custom-section-relocations.rs
+++ b/tests/ui/wasm/wasm-custom-section-relocations.rs
diff --git a/tests/ui/wasm-custom-section-relocations.stderr b/tests/ui/wasm/wasm-custom-section-relocations.stderr
index a37edc51d19..a37edc51d19 100644
--- a/tests/ui/wasm-custom-section-relocations.stderr
+++ b/tests/ui/wasm/wasm-custom-section-relocations.stderr
diff --git a/triagebot.toml b/triagebot.toml
index c86c1613fa9..20a8be283b9 100644
--- a/triagebot.toml
+++ b/triagebot.toml
@@ -482,7 +482,7 @@ message = "This PR changes src/bootstrap/defaults/config.codegen.toml. If approp
 
 [assign]
 warn_non_default_branch = true
-contributing_url = "https://rustc-dev-guide.rust-lang.org/contributing.html"
+contributing_url = "https://rustc-dev-guide.rust-lang.org/getting-started.html"
 
 [assign.adhoc_groups]
 compiler-team = [