Merge from rustc

269 files changed, 1705 insertions, 1658 deletions

diff --git a/compiler/rustc_abi/src/layout.rs b/compiler/rustc_abi/src/layout.rs
index 42250aa173b..21fd6be39fa 100644
--- a/compiler/rustc_abi/src/layout.rs
+++ b/compiler/rustc_abi/src/layout.rs
@@ -758,7 +758,7 @@ impl<Cx: HasDataLayout> LayoutCalculator<Cx> {
                         niche_variants,
                         niche_start,
                     },
-                    tag_field: 0,
+                    tag_field: FieldIdx::new(0),
                     variants: IndexVec::new(),
                 },
                 fields: FieldsShape::Arbitrary {
@@ -1072,7 +1072,7 @@ impl<Cx: HasDataLayout> LayoutCalculator<Cx> {
             variants: Variants::Multiple {
                 tag,
                 tag_encoding: TagEncoding::Direct,
-                tag_field: 0,
+                tag_field: FieldIdx::new(0),
                 variants: IndexVec::new(),
             },
             fields: FieldsShape::Arbitrary {
diff --git a/compiler/rustc_abi/src/layout/coroutine.rs b/compiler/rustc_abi/src/layout/coroutine.rs
index 27e704d538c..2b22276d4ae 100644
--- a/compiler/rustc_abi/src/layout/coroutine.rs
+++ b/compiler/rustc_abi/src/layout/coroutine.rs
@@ -158,7 +158,7 @@ pub(super) fn layout<
     // Build a prefix layout, including "promoting" all ineligible
     // locals as part of the prefix. We compute the layout of all of
     // these fields at once to get optimal packing.
-    let tag_index = prefix_layouts.len();
+    let tag_index = prefix_layouts.next_index();
 
     // `variant_fields` already accounts for the reserved variants, so no need to add them.
     let max_discr = (variant_fields.len() - 1) as u128;
@@ -187,7 +187,7 @@ pub(super) fn layout<
 
             // "a" (`0..b_start`) and "b" (`b_start..`) correspond to
             // "outer" and "promoted" fields respectively.
-            let b_start = FieldIdx::new(tag_index + 1);
+            let b_start = tag_index.plus(1);
             let offsets_b = IndexVec::from_raw(offsets.raw.split_off(b_start.index()));
             let offsets_a = offsets;
 
diff --git a/compiler/rustc_abi/src/lib.rs b/compiler/rustc_abi/src/lib.rs
index b806d0aba31..46b7a0c1e77 100644
--- a/compiler/rustc_abi/src/lib.rs
+++ b/compiler/rustc_abi/src/lib.rs
@@ -1573,7 +1573,7 @@ pub enum Variants<FieldIdx: Idx, VariantIdx: Idx> {
     Multiple {
         tag: Scalar,
         tag_encoding: TagEncoding<VariantIdx>,
-        tag_field: usize,
+        tag_field: FieldIdx,
         variants: IndexVec<VariantIdx, LayoutData<FieldIdx, VariantIdx>>,
     },
 }
diff --git a/compiler/rustc_ast/src/tokenstream.rs b/compiler/rustc_ast/src/tokenstream.rs
index 636c26bcde0..3c231be20dc 100644
--- a/compiler/rustc_ast/src/tokenstream.rs
+++ b/compiler/rustc_ast/src/tokenstream.rs
@@ -57,7 +57,9 @@ impl TokenTree {
         match (self, other) {
             (TokenTree::Token(token, _), TokenTree::Token(token2, _)) => token.kind == token2.kind,
             (TokenTree::Delimited(.., delim, tts), TokenTree::Delimited(.., delim2, tts2)) => {
-                delim == delim2 && tts.eq_unspanned(tts2)
+                delim == delim2
+                    && tts.len() == tts2.len()
+                    && tts.iter().zip(tts2.iter()).all(|(a, b)| a.eq_unspanned(b))
             }
             _ => false,
         }
@@ -694,18 +696,6 @@ impl TokenStream {
         TokenStreamIter::new(self)
     }
 
-    /// Compares two `TokenStream`s, checking equality without regarding span information.
-    pub fn eq_unspanned(&self, other: &TokenStream) -> bool {
-        let mut iter1 = self.iter();
-        let mut iter2 = other.iter();
-        for (tt1, tt2) in iter::zip(&mut iter1, &mut iter2) {
-            if !tt1.eq_unspanned(tt2) {
-                return false;
-            }
-        }
-        iter1.next().is_none() && iter2.next().is_none()
-    }
-
     /// Create a token stream containing a single token with alone spacing. The
     /// spacing used for the final token in a constructed stream doesn't matter
     /// because it's never used. In practice we arbitrarily use
diff --git a/compiler/rustc_ast/src/visit.rs b/compiler/rustc_ast/src/visit.rs
index 908d9fd4bda..1f7c97380dc 100644
--- a/compiler/rustc_ast/src/visit.rs
+++ b/compiler/rustc_ast/src/visit.rs
@@ -121,6 +121,10 @@ pub enum LifetimeCtxt {
 /// explicitly, you need to override each method. (And you also need
 /// to monitor future changes to `Visitor` in case a new method with a
 /// new default implementation gets introduced.)
+///
+/// Every `walk_*` method uses deconstruction to access fields of structs and
+/// enums. This will result in a compile error if a field is added, which makes
+/// it more likely the appropriate visit call will be added for it.
 pub trait Visitor<'ast>: Sized {
     /// The result type of the `visit_*` methods. Can be either `()`,
     /// or `ControlFlow<T>`.
diff --git a/compiler/rustc_attr_parsing/src/attributes/allow_unstable.rs b/compiler/rustc_attr_parsing/src/attributes/allow_unstable.rs
index b9b6ca26119..d0465546b73 100644
--- a/compiler/rustc_attr_parsing/src/attributes/allow_unstable.rs
+++ b/compiler/rustc_attr_parsing/src/attributes/allow_unstable.rs
@@ -53,7 +53,7 @@ fn parse_unstable<'a>(
 
     for param in list.mixed() {
         let param_span = param.span();
-        if let Some(ident) = param.meta_item().and_then(|i| i.path_without_args().word()) {
+        if let Some(ident) = param.meta_item().and_then(|i| i.path().word()) {
             res.push(ident.name);
         } else {
             cx.emit_err(session_diagnostics::ExpectsFeatures {
diff --git a/compiler/rustc_attr_parsing/src/attributes/deprecation.rs b/compiler/rustc_attr_parsing/src/attributes/deprecation.rs
index 1775770ec68..006c1fe3b9c 100644
--- a/compiler/rustc_attr_parsing/src/attributes/deprecation.rs
+++ b/compiler/rustc_attr_parsing/src/attributes/deprecation.rs
@@ -79,7 +79,7 @@ impl SingleAttributeParser for DeprecationParser {
                     return None;
                 };
 
-                let ident_name = param.path_without_args().word_sym();
+                let ident_name = param.path().word_sym();
 
                 match ident_name {
                     Some(name @ sym::since) => {
@@ -102,7 +102,7 @@ impl SingleAttributeParser for DeprecationParser {
                     _ => {
                         cx.emit_err(session_diagnostics::UnknownMetaItem {
                             span: param_span,
-                            item: param.path_without_args().to_string(),
+                            item: param.path().to_string(),
                             expected: if features.deprecated_suggestion() {
                                 &["since", "note", "suggestion"]
                             } else {
diff --git a/compiler/rustc_attr_parsing/src/attributes/repr.rs b/compiler/rustc_attr_parsing/src/attributes/repr.rs
index ab523ce0038..69316541e19 100644
--- a/compiler/rustc_attr_parsing/src/attributes/repr.rs
+++ b/compiler/rustc_attr_parsing/src/attributes/repr.rs
@@ -96,7 +96,7 @@ fn parse_repr(cx: &AcceptContext<'_>, param: &MetaItemParser<'_>) -> Option<Repr
 
     // FIXME(jdonszelmann): invert the parsing here to match on the word first and then the
     // structure.
-    let (name, ident_span) = if let Some(ident) = param.path_without_args().word() {
+    let (name, ident_span) = if let Some(ident) = param.path().word() {
         (Some(ident.name), ident.span)
     } else {
         (None, DUMMY_SP)
diff --git a/compiler/rustc_attr_parsing/src/attributes/stability.rs b/compiler/rustc_attr_parsing/src/attributes/stability.rs
index e30d7e7238e..ce69a54513d 100644
--- a/compiler/rustc_attr_parsing/src/attributes/stability.rs
+++ b/compiler/rustc_attr_parsing/src/attributes/stability.rs
@@ -204,7 +204,7 @@ fn insert_value_into_option_or_error(
     if item.is_some() {
         cx.emit_err(session_diagnostics::MultipleItem {
             span: param.span(),
-            item: param.path_without_args().to_string(),
+            item: param.path().to_string(),
         });
         None
     } else if let Some(v) = param.args().name_value()
@@ -242,13 +242,13 @@ pub(crate) fn parse_stability(
             return None;
         };
 
-        match param.path_without_args().word_sym() {
+        match param.path().word_sym() {
             Some(sym::feature) => insert_value_into_option_or_error(cx, &param, &mut feature)?,
             Some(sym::since) => insert_value_into_option_or_error(cx, &param, &mut since)?,
             _ => {
                 cx.emit_err(session_diagnostics::UnknownMetaItem {
                     span: param_span,
-                    item: param.path_without_args().to_string(),
+                    item: param.path().to_string(),
                     expected: &["feature", "since"],
                 });
                 return None;
@@ -310,7 +310,7 @@ pub(crate) fn parse_unstability(
             return None;
         };
 
-        match param.path_without_args().word_sym() {
+        match param.path().word_sym() {
             Some(sym::feature) => insert_value_into_option_or_error(cx, &param, &mut feature)?,
             Some(sym::reason) => insert_value_into_option_or_error(cx, &param, &mut reason)?,
             Some(sym::issue) => {
@@ -349,7 +349,7 @@ pub(crate) fn parse_unstability(
             _ => {
                 cx.emit_err(session_diagnostics::UnknownMetaItem {
                     span: param.span(),
-                    item: param.path_without_args().to_string(),
+                    item: param.path().to_string(),
                     expected: &["feature", "reason", "issue", "soft", "implied_by"],
                 });
                 return None;
diff --git a/compiler/rustc_attr_parsing/src/context.rs b/compiler/rustc_attr_parsing/src/context.rs
index 1360fc68714..c02760d830c 100644
--- a/compiler/rustc_attr_parsing/src/context.rs
+++ b/compiler/rustc_attr_parsing/src/context.rs
@@ -264,7 +264,8 @@ impl<'sess> AttributeParser<'sess> {
                 // }
                 ast::AttrKind::Normal(n) => {
                     let parser = MetaItemParser::from_attr(n, self.dcx());
-                    let (path, args) = parser.deconstruct();
+                    let path = parser.path();
+                    let args = parser.args();
                     let parts = path.segments().map(|i| i.name).collect::<Vec<_>>();
 
                     if let Some(accept) = ATTRIBUTE_MAPPING.0.get(parts.as_slice()) {
diff --git a/compiler/rustc_attr_parsing/src/parser.rs b/compiler/rustc_attr_parsing/src/parser.rs
index f433d3574e1..e10e3b511db 100644
--- a/compiler/rustc_attr_parsing/src/parser.rs
+++ b/compiler/rustc_attr_parsing/src/parser.rs
@@ -252,35 +252,18 @@ impl<'a> MetaItemParser<'a> {
         }
     }
 
-    /// Gets just the path, without the args.
-    pub fn path_without_args(&self) -> PathParser<'a> {
-        self.path.clone()
-    }
-
-    /// Gets just the args parser, without caring about the path.
-    pub fn args(&self) -> &ArgParser<'a> {
-        &self.args
-    }
-
-    pub fn deconstruct(&self) -> (PathParser<'a>, &ArgParser<'a>) {
-        (self.path_without_args(), self.args())
-    }
-
-    /// Asserts that this MetaItem starts with a path. Some examples:
+    /// Gets just the path, without the args. Some examples:
     ///
     /// - `#[rustfmt::skip]`: `rustfmt::skip` is a path
     /// - `#[allow(clippy::complexity)]`: `clippy::complexity` is a path
     /// - `#[inline]`: `inline` is a single segment path
-    pub fn path(&self) -> (PathParser<'a>, &ArgParser<'a>) {
-        self.deconstruct()
+    pub fn path(&self) -> &PathParser<'a> {
+        &self.path
     }
 
-    /// Asserts that this MetaItem starts with a word, or single segment path.
-    /// Doesn't return the args parser.
-    ///
-    /// For examples. see [`Self::word`]
-    pub fn word_without_args(&self) -> Option<Ident> {
-        Some(self.word()?.0)
+    /// Gets just the args parser, without caring about the path.
+    pub fn args(&self) -> &ArgParser<'a> {
+        &self.args
     }
 
     /// Asserts that this MetaItem starts with a word, or single segment path.
@@ -289,23 +272,8 @@ impl<'a> MetaItemParser<'a> {
     /// - `#[inline]`: `inline` is a word
     /// - `#[rustfmt::skip]`: `rustfmt::skip` is a path,
     ///   and not a word and should instead be parsed using [`path`](Self::path)
-    pub fn word(&self) -> Option<(Ident, &ArgParser<'a>)> {
-        let (path, args) = self.deconstruct();
-        Some((path.word()?, args))
-    }
-
-    /// Asserts that this MetaItem starts with some specific word.
-    ///
-    /// See [`word`](Self::word) for examples of what a word is.
     pub fn word_is(&self, sym: Symbol) -> Option<&ArgParser<'a>> {
-        self.path_without_args().word_is(sym).then(|| self.args())
-    }
-
-    /// Asserts that this MetaItem starts with some specific path.
-    ///
-    /// See [`word`](Self::path) for examples of what a word is.
-    pub fn path_is(&self, segments: &[Symbol]) -> Option<&ArgParser<'a>> {
-        self.path_without_args().segments_is(segments).then(|| self.args())
+        self.path().word_is(sym).then(|| self.args())
     }
 }
 
@@ -548,7 +516,7 @@ impl<'a> MetaItemListParser<'a> {
     }
 
     /// Lets you pick and choose as what you want to parse each element in the list
-    pub fn mixed<'s>(&'s self) -> impl Iterator<Item = &'s MetaItemOrLitParser<'a>> + 's {
+    pub fn mixed(&self) -> impl Iterator<Item = &MetaItemOrLitParser<'a>> {
         self.sub_parsers.iter()
     }
 
@@ -560,20 +528,6 @@ impl<'a> MetaItemListParser<'a> {
         self.len() == 0
     }
 
-    /// Asserts that every item in the list is another list starting with a word.
-    ///
-    /// See [`MetaItemParser::word`] for examples of words.
-    pub fn all_word_list<'s>(&'s self) -> Option<Vec<(Ident, &'s ArgParser<'a>)>> {
-        self.mixed().map(|i| i.meta_item()?.word()).collect()
-    }
-
-    /// Asserts that every item in the list is another list starting with a full path.
-    ///
-    /// See [`MetaItemParser::path`] for examples of paths.
-    pub fn all_path_list<'s>(&'s self) -> Option<Vec<(PathParser<'a>, &'s ArgParser<'a>)>> {
-        self.mixed().map(|i| Some(i.meta_item()?.path())).collect()
-    }
-
     /// Returns Some if the list contains only a single element.
     ///
     /// Inside the Some is the parser to parse this single element.
diff --git a/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs b/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs
index 3b7d31b1b13..b7b6a2da549 100644
--- a/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs
+++ b/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs
@@ -3314,7 +3314,13 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
                     "function parameter".to_string(),
                     "function parameter borrowed here".to_string(),
                 ),
-                LocalKind::Temp if self.body.local_decls[local].is_user_variable() => {
+                LocalKind::Temp
+                    if self.body.local_decls[local].is_user_variable()
+                        && !self.body.local_decls[local]
+                            .source_info
+                            .span
+                            .in_external_macro(self.infcx.tcx.sess.source_map()) =>
+                {
                     ("local binding".to_string(), "local binding introduced here".to_string())
                 }
                 LocalKind::ReturnPointer | LocalKind::Temp => {
diff --git a/compiler/rustc_codegen_cranelift/src/discriminant.rs b/compiler/rustc_codegen_cranelift/src/discriminant.rs
index 4d0d5dc60eb..a08b0e0cbfc 100644
--- a/compiler/rustc_codegen_cranelift/src/discriminant.rs
+++ b/compiler/rustc_codegen_cranelift/src/discriminant.rs
@@ -28,7 +28,7 @@ pub(crate) fn codegen_set_discriminant<'tcx>(
             tag_encoding: TagEncoding::Direct,
             variants: _,
         } => {
-            let ptr = place.place_field(fx, FieldIdx::new(tag_field));
+            let ptr = place.place_field(fx, tag_field);
             let to = layout.ty.discriminant_for_variant(fx.tcx, variant_index).unwrap().val;
             let to = match ptr.layout().ty.kind() {
                 ty::Uint(UintTy::U128) | ty::Int(IntTy::I128) => {
@@ -53,7 +53,7 @@ pub(crate) fn codegen_set_discriminant<'tcx>(
             variants: _,
         } => {
             if variant_index != untagged_variant {
-                let niche = place.place_field(fx, FieldIdx::new(tag_field));
+                let niche = place.place_field(fx, tag_field);
                 let niche_type = fx.clif_type(niche.layout().ty).unwrap();
                 let niche_value = variant_index.as_u32() - niche_variants.start().as_u32();
                 let niche_value = (niche_value as u128).wrapping_add(niche_start);
@@ -118,7 +118,7 @@ pub(crate) fn codegen_get_discriminant<'tcx>(
     let cast_to = fx.clif_type(dest_layout.ty).unwrap();
 
     // Read the tag/niche-encoded discriminant from memory.
-    let tag = value.value_field(fx, FieldIdx::new(tag_field));
+    let tag = value.value_field(fx, tag_field);
     let tag = tag.load_scalar(fx);
 
     // Decode the discriminant (specifically if it's niche-encoded).
diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/cpp_like.rs b/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/cpp_like.rs
index e9574108696..a5c80895741 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/cpp_like.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/cpp_like.rs
@@ -1,7 +1,7 @@
 use std::borrow::Cow;
 
 use libc::c_uint;
-use rustc_abi::{Align, Endian, Size, TagEncoding, VariantIdx, Variants};
+use rustc_abi::{Align, Endian, FieldIdx, Size, TagEncoding, VariantIdx, Variants};
 use rustc_codegen_ssa::debuginfo::type_names::compute_debuginfo_type_name;
 use rustc_codegen_ssa::debuginfo::{tag_base_type, wants_c_like_enum_debuginfo};
 use rustc_codegen_ssa::traits::{ConstCodegenMethods, MiscCodegenMethods};
@@ -401,7 +401,7 @@ fn build_union_fields_for_enum<'ll, 'tcx>(
     enum_type_and_layout: TyAndLayout<'tcx>,
     enum_type_di_node: &'ll DIType,
     variant_indices: impl Iterator<Item = VariantIdx> + Clone,
-    tag_field: usize,
+    tag_field: FieldIdx,
     untagged_variant_index: Option<VariantIdx>,
 ) -> SmallVec<&'ll DIType> {
     let tag_base_type = tag_base_type(cx.tcx, enum_type_and_layout);
@@ -805,7 +805,7 @@ fn build_union_fields_for_direct_tag_enum_or_coroutine<'ll, 'tcx>(
     variant_field_infos: &[VariantFieldInfo<'ll>],
     discr_type_di_node: &'ll DIType,
     tag_base_type: Ty<'tcx>,
-    tag_field: usize,
+    tag_field: FieldIdx,
     untagged_variant_index: Option<VariantIdx>,
     di_flags: DIFlags,
 ) -> SmallVec<&'ll DIType> {
@@ -858,7 +858,7 @@ fn build_union_fields_for_direct_tag_enum_or_coroutine<'ll, 'tcx>(
     }));
 
     assert_eq!(
-        cx.size_and_align_of(enum_type_and_layout.field(cx, tag_field).ty),
+        cx.size_and_align_of(enum_type_and_layout.field(cx, tag_field.as_usize()).ty),
         cx.size_and_align_of(self::tag_base_type(cx.tcx, enum_type_and_layout))
     );
 
@@ -875,7 +875,7 @@ fn build_union_fields_for_direct_tag_enum_or_coroutine<'ll, 'tcx>(
             Endian::Big => (8, 0),
         };
 
-        let tag_field_offset = enum_type_and_layout.fields.offset(tag_field).bytes();
+        let tag_field_offset = enum_type_and_layout.fields.offset(tag_field.as_usize()).bytes();
         let lo_offset = Size::from_bytes(tag_field_offset + lo_offset);
         let hi_offset = Size::from_bytes(tag_field_offset + hi_offset);
 
@@ -905,8 +905,8 @@ fn build_union_fields_for_direct_tag_enum_or_coroutine<'ll, 'tcx>(
             cx,
             enum_type_di_node,
             TAG_FIELD_NAME,
-            enum_type_and_layout.field(cx, tag_field),
-            enum_type_and_layout.fields.offset(tag_field),
+            enum_type_and_layout.field(cx, tag_field.as_usize()),
+            enum_type_and_layout.fields.offset(tag_field.as_usize()),
             di_flags,
             tag_base_type_di_node,
             None,
diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/native.rs b/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/native.rs
index 20a841f2287..62d38d463ab 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/native.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/native.rs
@@ -373,7 +373,7 @@ fn build_discr_member_di_node<'ll, 'tcx>(
                 file,
                 UNKNOWN_LINE_NUMBER,
                 layout,
-                enum_or_coroutine_type_and_layout.fields.offset(tag_field),
+                enum_or_coroutine_type_and_layout.fields.offset(tag_field.as_usize()),
                 DIFlags::FlagArtificial,
                 ty,
             ))
diff --git a/compiler/rustc_codegen_llvm/src/llvm_util.rs b/compiler/rustc_codegen_llvm/src/llvm_util.rs
index 8f57f0983ab..9718c95f38a 100644
--- a/compiler/rustc_codegen_llvm/src/llvm_util.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm_util.rs
@@ -282,6 +282,14 @@ pub(crate) fn to_llvm_features<'a>(sess: &Session, s: &'a str) -> Option<LLVMFea
         }
         // Filter out features that are not supported by the current LLVM version
         ("riscv32" | "riscv64", "zacas") if get_version().0 < 20 => None,
+        (
+            "s390x",
+            "message-security-assist-extension12"
+            | "concurrent-functions"
+            | "miscellaneous-extensions-4"
+            | "vector-enhancements-3"
+            | "vector-packed-decimal-enhancement-3",
+        ) if get_version().0 < 20 => None,
         // Enable the evex512 target feature if an avx512 target feature is enabled.
         ("x86", s) if s.starts_with("avx512") => Some(LLVMFeature::with_dependencies(
             s,
diff --git a/compiler/rustc_codegen_ssa/src/mir/operand.rs b/compiler/rustc_codegen_ssa/src/mir/operand.rs
index eade9e52de9..b7f2277bfda 100644
--- a/compiler/rustc_codegen_ssa/src/mir/operand.rs
+++ b/compiler/rustc_codegen_ssa/src/mir/operand.rs
@@ -462,10 +462,10 @@ impl<'a, 'tcx, V: CodegenObject> OperandRef<'tcx, V> {
         let tag_op = match self.val {
             OperandValue::ZeroSized => bug!(),
             OperandValue::Immediate(_) | OperandValue::Pair(_, _) => {
-                self.extract_field(fx, bx, tag_field)
+                self.extract_field(fx, bx, tag_field.as_usize())
             }
             OperandValue::Ref(place) => {
-                let tag = place.with_type(self.layout).project_field(bx, tag_field);
+                let tag = place.with_type(self.layout).project_field(bx, tag_field.as_usize());
                 bx.load_operand(tag)
             }
         };
diff --git a/compiler/rustc_codegen_ssa/src/mir/place.rs b/compiler/rustc_codegen_ssa/src/mir/place.rs
index 31db7fa9a18..937063c24a6 100644
--- a/compiler/rustc_codegen_ssa/src/mir/place.rs
+++ b/compiler/rustc_codegen_ssa/src/mir/place.rs
@@ -250,7 +250,7 @@ impl<'a, 'tcx, V: CodegenObject> PlaceRef<'tcx, V> {
             Variants::Single { index } => assert_eq!(index, variant_index),
 
             Variants::Multiple { tag_encoding: TagEncoding::Direct, tag_field, .. } => {
-                let ptr = self.project_field(bx, tag_field);
+                let ptr = self.project_field(bx, tag_field.as_usize());
                 let to =
                     self.layout.ty.discriminant_for_variant(bx.tcx(), variant_index).unwrap().val;
                 bx.store_to_place(
@@ -265,7 +265,7 @@ impl<'a, 'tcx, V: CodegenObject> PlaceRef<'tcx, V> {
                 ..
             } => {
                 if variant_index != untagged_variant {
-                    let niche = self.project_field(bx, tag_field);
+                    let niche = self.project_field(bx, tag_field.as_usize());
                     let niche_llty = bx.cx().immediate_backend_type(niche.layout);
                     let BackendRepr::Scalar(scalar) = niche.layout.backend_repr else {
                         bug!("expected a scalar placeref for the niche");
diff --git a/compiler/rustc_const_eval/src/interpret/discriminant.rs b/compiler/rustc_const_eval/src/interpret/discriminant.rs
index 2f0b1cb6d1e..020cd65d75d 100644
--- a/compiler/rustc_const_eval/src/interpret/discriminant.rs
+++ b/compiler/rustc_const_eval/src/interpret/discriminant.rs
@@ -1,6 +1,6 @@
 //! Functions for reading and writing discriminants of multi-variant layouts (enums and coroutines).
 
-use rustc_abi::{self as abi, TagEncoding, VariantIdx, Variants};
+use rustc_abi::{self as abi, FieldIdx, TagEncoding, VariantIdx, Variants};
 use rustc_middle::ty::layout::{LayoutOf, PrimitiveExt, TyAndLayout};
 use rustc_middle::ty::{self, CoroutineArgsExt, ScalarInt, Ty};
 use rustc_middle::{mir, span_bug};
@@ -26,7 +26,7 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
                 // No need to validate that the discriminant here because the
                 // `TyAndLayout::for_variant()` call earlier already checks the
                 // variant is valid.
-                let tag_dest = self.project_field(dest, tag_field)?;
+                let tag_dest = self.project_field(dest, tag_field.as_usize())?;
                 self.write_scalar(tag, &tag_dest)
             }
             None => {
@@ -96,7 +96,7 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
         let tag_layout = self.layout_of(tag_scalar_layout.primitive().to_int_ty(*self.tcx))?;
 
         // Read tag and sanity-check `tag_layout`.
-        let tag_val = self.read_immediate(&self.project_field(op, tag_field)?)?;
+        let tag_val = self.read_immediate(&self.project_field(op, tag_field.as_usize())?)?;
         assert_eq!(tag_layout.size, tag_val.layout.size);
         assert_eq!(tag_layout.backend_repr.is_signed(), tag_val.layout.backend_repr.is_signed());
         trace!("tag value: {}", tag_val);
@@ -231,7 +231,7 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
         &self,
         layout: TyAndLayout<'tcx>,
         variant_index: VariantIdx,
-    ) -> InterpResult<'tcx, Option<(ScalarInt, usize)>> {
+    ) -> InterpResult<'tcx, Option<(ScalarInt, FieldIdx)>> {
         // Layout computation excludes uninhabited variants from consideration.
         // Therefore, there's no way to represent those variants in the given layout.
         // Essentially, uninhabited variants do not have a tag that corresponds to their
diff --git a/compiler/rustc_const_eval/src/interpret/validity.rs b/compiler/rustc_const_eval/src/interpret/validity.rs
index 8f39afa642a..7d76d925ef2 100644
--- a/compiler/rustc_const_eval/src/interpret/validity.rs
+++ b/compiler/rustc_const_eval/src/interpret/validity.rs
@@ -294,7 +294,7 @@ impl<'rt, 'tcx, M: Machine<'tcx>> ValidityVisitor<'rt, 'tcx, M> {
         // First, check if we are projecting to a variant.
         match layout.variants {
             Variants::Multiple { tag_field, .. } => {
-                if tag_field == field {
+                if tag_field.as_usize() == field {
                     return match layout.ty.kind() {
                         ty::Adt(def, ..) if def.is_enum() => PathElem::EnumTag,
                         ty::Coroutine(..) => PathElem::CoroutineTag,
diff --git a/compiler/rustc_hir/src/intravisit.rs b/compiler/rustc_hir/src/intravisit.rs
index b9932a7334e..bebac3a4b78 100644
--- a/compiler/rustc_hir/src/intravisit.rs
+++ b/compiler/rustc_hir/src/intravisit.rs
@@ -200,6 +200,10 @@ use nested_filter::NestedFilter;
 /// explicitly, you need to override each method. (And you also need
 /// to monitor future changes to `Visitor` in case a new method with a
 /// new default implementation gets introduced.)
+///
+/// Every `walk_*` method uses deconstruction to access fields of structs and
+/// enums. This will result in a compile error if a field is added, which makes
+/// it more likely the appropriate visit call will be added for it.
 pub trait Visitor<'v>: Sized {
     // This type should not be overridden, it exists for convenient usage as `Self::MaybeTyCtxt`.
     type MaybeTyCtxt: HirTyCtxt<'v> = <Self::NestedFilter as NestedFilter<'v>>::MaybeTyCtxt;
@@ -1201,7 +1205,6 @@ pub fn walk_trait_item<'v, V: Visitor<'v>>(
     visitor: &mut V,
     trait_item: &'v TraitItem<'v>,
 ) -> V::Result {
-    // N.B., deliberately force a compilation error if/when new fields are added.
     let TraitItem { ident, generics, ref defaultness, ref kind, span, owner_id: _ } = *trait_item;
     let hir_id = trait_item.hir_id();
     try_visit!(visitor.visit_ident(ident));
@@ -1240,7 +1243,6 @@ pub fn walk_trait_item_ref<'v, V: Visitor<'v>>(
     visitor: &mut V,
     trait_item_ref: &'v TraitItemRef,
 ) -> V::Result {
-    // N.B., deliberately force a compilation error if/when new fields are added.
     let TraitItemRef { id, ident, ref kind, span: _ } = *trait_item_ref;
     try_visit!(visitor.visit_nested_trait_item(id));
     try_visit!(visitor.visit_ident(ident));
@@ -1251,7 +1253,6 @@ pub fn walk_impl_item<'v, V: Visitor<'v>>(
     visitor: &mut V,
     impl_item: &'v ImplItem<'v>,
 ) -> V::Result {
-    // N.B., deliberately force a compilation error if/when new fields are added.
     let ImplItem {
         owner_id: _,
         ident,
@@ -1286,7 +1287,6 @@ pub fn walk_foreign_item_ref<'v, V: Visitor<'v>>(
     visitor: &mut V,
     foreign_item_ref: &'v ForeignItemRef,
 ) -> V::Result {
-    // N.B., deliberately force a compilation error if/when new fields are added.
     let ForeignItemRef { id, ident, span: _ } = *foreign_item_ref;
     try_visit!(visitor.visit_nested_foreign_item(id));
     visitor.visit_ident(ident)
@@ -1296,7 +1296,6 @@ pub fn walk_impl_item_ref<'v, V: Visitor<'v>>(
     visitor: &mut V,
     impl_item_ref: &'v ImplItemRef,
 ) -> V::Result {
-    // N.B., deliberately force a compilation error if/when new fields are added.
     let ImplItemRef { id, ident, ref kind, span: _, trait_item_def_id: _ } = *impl_item_ref;
     try_visit!(visitor.visit_nested_impl_item(id));
     try_visit!(visitor.visit_ident(ident));
@@ -1333,8 +1332,9 @@ pub fn walk_precise_capturing_arg<'v, V: Visitor<'v>>(
     match *arg {
         PreciseCapturingArg::Lifetime(lt) => visitor.visit_lifetime(lt),
         PreciseCapturingArg::Param(param) => {
-            let PreciseCapturingNonLifetimeArg { hir_id, ident: _, res: _ } = param;
-            visitor.visit_id(hir_id)
+            let PreciseCapturingNonLifetimeArg { hir_id, ident, res: _ } = param;
+            try_visit!(visitor.visit_id(hir_id));
+            visitor.visit_ident(ident)
         }
     }
 }
diff --git a/compiler/rustc_hir_analysis/src/check/check.rs b/compiler/rustc_hir_analysis/src/check/check.rs
index 846eacce9e1..bcf0353498e 100644
--- a/compiler/rustc_hir_analysis/src/check/check.rs
+++ b/compiler/rustc_hir_analysis/src/check/check.rs
@@ -702,6 +702,29 @@ fn check_static_linkage(tcx: TyCtxt<'_>, def_id: LocalDefId) {
 }
 
 pub(crate) fn check_item_type(tcx: TyCtxt<'_>, def_id: LocalDefId) {
+    let generics = tcx.generics_of(def_id);
+
+    for param in &generics.own_params {
+        match param.kind {
+            ty::GenericParamDefKind::Lifetime { .. } => {}
+            ty::GenericParamDefKind::Type { has_default, .. } => {
+                if has_default {
+                    tcx.ensure_ok().type_of(param.def_id);
+                }
+            }
+            ty::GenericParamDefKind::Const { has_default, .. } => {
+                tcx.ensure_ok().type_of(param.def_id);
+                if has_default {
+                    // need to store default and type of default
+                    let ct = tcx.const_param_default(param.def_id).skip_binder();
+                    if let ty::ConstKind::Unevaluated(uv) = ct.kind() {
+                        tcx.ensure_ok().type_of(uv.def);
+                    }
+                }
+            }
+        }
+    }
+
     match tcx.def_kind(def_id) {
         DefKind::Static { .. } => {
             check_static_inhabited(tcx, def_id);
@@ -770,6 +793,16 @@ pub(crate) fn check_item_type(tcx: TyCtxt<'_>, def_id: LocalDefId) {
             } else {
                 check_opaque(tcx, def_id);
             }
+
+            tcx.ensure_ok().predicates_of(def_id);
+            tcx.ensure_ok().explicit_item_bounds(def_id);
+            tcx.ensure_ok().explicit_item_self_bounds(def_id);
+            tcx.ensure_ok().item_bounds(def_id);
+            tcx.ensure_ok().item_self_bounds(def_id);
+            if tcx.is_conditionally_const(def_id) {
+                tcx.ensure_ok().explicit_implied_const_bounds(def_id);
+                tcx.ensure_ok().const_conditions(def_id);
+            }
         }
         DefKind::TyAlias => {
             check_type_alias_type_params_are_used(tcx, def_id);
@@ -827,6 +860,15 @@ pub(crate) fn check_item_type(tcx: TyCtxt<'_>, def_id: LocalDefId) {
                 }
             }
         }
+        DefKind::Closure => {
+            // This is guaranteed to be called by metadata encoding,
+            // we still call it in wfcheck eagerly to ensure errors in codegen
+            // attrs prevent lints from spamming the output.
+            tcx.ensure_ok().codegen_fn_attrs(def_id);
+            // We do not call `type_of` for closures here as that
+            // depends on typecheck and would therefore hide
+            // any further errors in case one typeck fails.
+        }
         _ => {}
     }
 }
diff --git a/compiler/rustc_hir_analysis/src/check/wfcheck.rs b/compiler/rustc_hir_analysis/src/check/wfcheck.rs
index b764b714fe1..00316682df8 100644
--- a/compiler/rustc_hir_analysis/src/check/wfcheck.rs
+++ b/compiler/rustc_hir_analysis/src/check/wfcheck.rs
@@ -7,7 +7,7 @@ use rustc_data_structures::fx::{FxHashSet, FxIndexMap, FxIndexSet};
 use rustc_errors::codes::*;
 use rustc_errors::{Applicability, ErrorGuaranteed, pluralize, struct_span_code_err};
 use rustc_hir::def::{DefKind, Res};
-use rustc_hir::def_id::{DefId, LocalDefId, LocalModDefId};
+use rustc_hir::def_id::{DefId, LocalDefId};
 use rustc_hir::lang_items::LangItem;
 use rustc_hir::{AmbigArg, ItemKind};
 use rustc_infer::infer::outlives::env::OutlivesEnvironment;
@@ -40,7 +40,6 @@ use tracing::{debug, instrument};
 use {rustc_ast as ast, rustc_hir as hir};
 
 use crate::autoderef::Autoderef;
-use crate::collect::CollectItemTypesVisitor;
 use crate::constrained_generic_params::{Parameter, identify_constrained_generic_params};
 use crate::errors::InvalidReceiverTyHint;
 use crate::{errors, fluent_generated as fluent};
@@ -195,7 +194,9 @@ fn check_well_formed(tcx: TyCtxt<'_>, def_id: LocalDefId) -> Result<(), ErrorGua
         hir::Node::TraitItem(item) => check_trait_item(tcx, item),
         hir::Node::ImplItem(item) => check_impl_item(tcx, item),
         hir::Node::ForeignItem(item) => check_foreign_item(tcx, item),
-        hir::Node::OpaqueTy(_) => Ok(crate::check::check::check_item_type(tcx, def_id)),
+        hir::Node::ConstBlock(_) | hir::Node::Expr(_) | hir::Node::OpaqueTy(_) => {
+            Ok(crate::check::check::check_item_type(tcx, def_id))
+        }
         _ => unreachable!("{node:?}"),
     };
 
@@ -229,7 +230,8 @@ fn check_item<'tcx>(tcx: TyCtxt<'tcx>, item: &'tcx hir::Item<'tcx>) -> Result<()
         ?item.owner_id,
         item.name = ? tcx.def_path_str(def_id)
     );
-    CollectItemTypesVisitor { tcx }.visit_item(item);
+    crate::collect::lower_item(tcx, item.item_id());
+    crate::collect::reject_placeholder_type_signatures_in_item(tcx, item);
 
     let res = match item.kind {
         // Right now we check that every default trait implementation
@@ -350,8 +352,6 @@ fn check_foreign_item<'tcx>(
 ) -> Result<(), ErrorGuaranteed> {
     let def_id = item.owner_id.def_id;
 
-    CollectItemTypesVisitor { tcx }.visit_foreign_item(item);
-
     debug!(
         ?item.owner_id,
         item.name = ? tcx.def_path_str(def_id)
@@ -374,7 +374,7 @@ fn check_trait_item<'tcx>(
 ) -> Result<(), ErrorGuaranteed> {
     let def_id = trait_item.owner_id.def_id;
 
-    CollectItemTypesVisitor { tcx }.visit_trait_item(trait_item);
+    crate::collect::lower_trait_item(tcx, trait_item.trait_item_id());
 
     let (method_sig, span) = match trait_item.kind {
         hir::TraitItemKind::Fn(ref sig, _) => (Some(sig), trait_item.span),
@@ -939,7 +939,7 @@ fn check_impl_item<'tcx>(
     tcx: TyCtxt<'tcx>,
     impl_item: &'tcx hir::ImplItem<'tcx>,
 ) -> Result<(), ErrorGuaranteed> {
-    CollectItemTypesVisitor { tcx }.visit_impl_item(impl_item);
+    crate::collect::lower_impl_item(tcx, impl_item.impl_item_id());
 
     let (method_sig, span) = match impl_item.kind {
         hir::ImplItemKind::Fn(ref sig, _) => (Some(sig), impl_item.span),
@@ -2402,8 +2402,8 @@ impl<'tcx> WfCheckingCtxt<'_, 'tcx> {
     }
 }
 
-fn check_mod_type_wf(tcx: TyCtxt<'_>, module: LocalModDefId) -> Result<(), ErrorGuaranteed> {
-    let items = tcx.hir_module_items(module);
+fn check_type_wf(tcx: TyCtxt<'_>, (): ()) -> Result<(), ErrorGuaranteed> {
+    let items = tcx.hir_crate_items(());
     let res = items
         .par_items(|item| tcx.ensure_ok().check_well_formed(item.owner_id.def_id))
         .and(items.par_impl_items(|item| tcx.ensure_ok().check_well_formed(item.owner_id.def_id)))
@@ -2411,10 +2411,10 @@ fn check_mod_type_wf(tcx: TyCtxt<'_>, module: LocalModDefId) -> Result<(), Error
         .and(
             items.par_foreign_items(|item| tcx.ensure_ok().check_well_formed(item.owner_id.def_id)),
         )
+        .and(items.par_nested_bodies(|item| tcx.ensure_ok().check_well_formed(item)))
         .and(items.par_opaques(|item| tcx.ensure_ok().check_well_formed(item)));
-    if module == LocalModDefId::CRATE_DEF_ID {
-        super::entry::check_for_entry_fn(tcx);
-    }
+    super::entry::check_for_entry_fn(tcx);
+
     res
 }
 
@@ -2552,5 +2552,5 @@ struct RedundantLifetimeArgsLint<'tcx> {
 }
 
 pub fn provide(providers: &mut Providers) {
-    *providers = Providers { check_mod_type_wf, check_well_formed, ..*providers };
+    *providers = Providers { check_type_wf, check_well_formed, ..*providers };
 }
diff --git a/compiler/rustc_hir_analysis/src/collect.rs b/compiler/rustc_hir_analysis/src/collect.rs
index a649e7d67af..e1df0d60452 100644
--- a/compiler/rustc_hir_analysis/src/collect.rs
+++ b/compiler/rustc_hir_analysis/src/collect.rs
@@ -28,11 +28,10 @@ use rustc_errors::{
 };
 use rustc_hir::def::DefKind;
 use rustc_hir::def_id::{DefId, LocalDefId};
-use rustc_hir::intravisit::{self, InferKind, Visitor, VisitorExt, walk_generics};
+use rustc_hir::intravisit::{InferKind, Visitor, VisitorExt, walk_generics};
 use rustc_hir::{self as hir, GenericParamKind, HirId, Node, PreciseCapturingArgKind};
 use rustc_infer::infer::{InferCtxt, TyCtxtInferExt};
 use rustc_infer::traits::{DynCompatibilityViolation, ObligationCause};
-use rustc_middle::hir::nested_filter;
 use rustc_middle::query::Providers;
 use rustc_middle::ty::util::{Discr, IntTypeExt};
 use rustc_middle::ty::{self, AdtKind, Const, IsSuggestable, Ty, TyCtxt, TypingMode, fold_regions};
@@ -148,10 +147,6 @@ impl<'v> Visitor<'v> for HirPlaceholderCollector {
     }
 }
 
-pub(crate) struct CollectItemTypesVisitor<'tcx> {
-    pub tcx: TyCtxt<'tcx>,
-}
-
 /// If there are any placeholder types (`_`), emit an error explaining that this is not allowed
 /// and suggest adding type parameters in the appropriate place, taking into consideration any and
 /// all already existing generic type parameters to avoid suggesting a name that is already in use.
@@ -243,7 +238,7 @@ pub(crate) fn placeholder_type_error_diag<'cx, 'tcx>(
     err
 }
 
-fn reject_placeholder_type_signatures_in_item<'tcx>(
+pub(super) fn reject_placeholder_type_signatures_in_item<'tcx>(
     tcx: TyCtxt<'tcx>,
     item: &'tcx hir::Item<'tcx>,
 ) {
@@ -274,81 +269,6 @@ fn reject_placeholder_type_signatures_in_item<'tcx>(
     );
 }
 
-impl<'tcx> Visitor<'tcx> for CollectItemTypesVisitor<'tcx> {
-    type NestedFilter = nested_filter::OnlyBodies;
-
-    fn maybe_tcx(&mut self) -> Self::MaybeTyCtxt {
-        self.tcx
-    }
-
-    fn visit_item(&mut self, item: &'tcx hir::Item<'tcx>) {
-        lower_item(self.tcx, item.item_id());
-        reject_placeholder_type_signatures_in_item(self.tcx, item);
-        intravisit::walk_item(self, item);
-    }
-
-    fn visit_generics(&mut self, generics: &'tcx hir::Generics<'tcx>) {
-        for param in generics.params {
-            match param.kind {
-                hir::GenericParamKind::Lifetime { .. } => {}
-                hir::GenericParamKind::Type { default: Some(_), .. } => {
-                    self.tcx.ensure_ok().type_of(param.def_id);
-                }
-                hir::GenericParamKind::Type { .. } => {}
-                hir::GenericParamKind::Const { default, .. } => {
-                    self.tcx.ensure_ok().type_of(param.def_id);
-                    if let Some(default) = default {
-                        // need to store default and type of default
-                        self.tcx.ensure_ok().const_param_default(param.def_id);
-                        if let hir::ConstArgKind::Anon(ac) = default.kind {
-                            self.tcx.ensure_ok().type_of(ac.def_id);
-                        }
-                    }
-                }
-            }
-        }
-        intravisit::walk_generics(self, generics);
-    }
-
-    fn visit_expr(&mut self, expr: &'tcx hir::Expr<'tcx>) {
-        if let hir::ExprKind::Closure(closure) = expr.kind {
-            self.tcx.ensure_ok().generics_of(closure.def_id);
-            self.tcx.ensure_ok().codegen_fn_attrs(closure.def_id);
-            // We do not call `type_of` for closures here as that
-            // depends on typecheck and would therefore hide
-            // any further errors in case one typeck fails.
-        }
-        intravisit::walk_expr(self, expr);
-    }
-
-    /// Don't call `type_of` on opaque types, since that depends on type checking function bodies.
-    /// `check_item_type` ensures that it's called instead.
-    fn visit_opaque_ty(&mut self, opaque: &'tcx hir::OpaqueTy<'tcx>) {
-        let def_id = opaque.def_id;
-        self.tcx.ensure_ok().generics_of(def_id);
-        self.tcx.ensure_ok().predicates_of(def_id);
-        self.tcx.ensure_ok().explicit_item_bounds(def_id);
-        self.tcx.ensure_ok().explicit_item_self_bounds(def_id);
-        self.tcx.ensure_ok().item_bounds(def_id);
-        self.tcx.ensure_ok().item_self_bounds(def_id);
-        if self.tcx.is_conditionally_const(def_id) {
-            self.tcx.ensure_ok().explicit_implied_const_bounds(def_id);
-            self.tcx.ensure_ok().const_conditions(def_id);
-        }
-        intravisit::walk_opaque_ty(self, opaque);
-    }
-
-    fn visit_trait_item(&mut self, trait_item: &'tcx hir::TraitItem<'tcx>) {
-        lower_trait_item(self.tcx, trait_item.trait_item_id());
-        intravisit::walk_trait_item(self, trait_item);
-    }
-
-    fn visit_impl_item(&mut self, impl_item: &'tcx hir::ImplItem<'tcx>) {
-        lower_impl_item(self.tcx, impl_item.impl_item_id());
-        intravisit::walk_impl_item(self, impl_item);
-    }
-}
-
 ///////////////////////////////////////////////////////////////////////////
 // Utility types and common code for the above passes.
 
@@ -669,7 +589,7 @@ fn get_new_lifetime_name<'tcx>(
 }
 
 #[instrument(level = "debug", skip_all)]
-fn lower_item(tcx: TyCtxt<'_>, item_id: hir::ItemId) {
+pub(super) fn lower_item(tcx: TyCtxt<'_>, item_id: hir::ItemId) {
     let it = tcx.hir_item(item_id);
     debug!(item = ?it.kind.ident(), id = %it.hir_id());
     let def_id = item_id.owner_id.def_id;
@@ -790,7 +710,7 @@ fn lower_item(tcx: TyCtxt<'_>, item_id: hir::ItemId) {
     }
 }
 
-fn lower_trait_item(tcx: TyCtxt<'_>, trait_item_id: hir::TraitItemId) {
+pub(crate) fn lower_trait_item(tcx: TyCtxt<'_>, trait_item_id: hir::TraitItemId) {
     let trait_item = tcx.hir_trait_item(trait_item_id);
     let def_id = trait_item_id.owner_id;
     tcx.ensure_ok().generics_of(def_id);
@@ -861,7 +781,7 @@ fn lower_trait_item(tcx: TyCtxt<'_>, trait_item_id: hir::TraitItemId) {
     tcx.ensure_ok().predicates_of(def_id);
 }
 
-fn lower_impl_item(tcx: TyCtxt<'_>, impl_item_id: hir::ImplItemId) {
+pub(super) fn lower_impl_item(tcx: TyCtxt<'_>, impl_item_id: hir::ImplItemId) {
     let def_id = impl_item_id.owner_id;
     tcx.ensure_ok().generics_of(def_id);
     tcx.ensure_ok().type_of(def_id);
diff --git a/compiler/rustc_hir_analysis/src/lib.rs b/compiler/rustc_hir_analysis/src/lib.rs
index a64c24f5455..f255817bffc 100644
--- a/compiler/rustc_hir_analysis/src/lib.rs
+++ b/compiler/rustc_hir_analysis/src/lib.rs
@@ -182,9 +182,7 @@ pub fn check_crate(tcx: TyCtxt<'_>) {
         // what we are intending to discard, to help future type-based refactoring.
         type R = Result<(), ErrorGuaranteed>;
 
-        tcx.par_hir_for_each_module(|module| {
-            let _: R = tcx.ensure_ok().check_mod_type_wf(module);
-        });
+        let _: R = tcx.ensure_ok().check_type_wf(());
 
         for &trait_def_id in tcx.all_local_trait_impls(()).keys() {
             let _: R = tcx.ensure_ok().coherent_trait(trait_def_id);
diff --git a/compiler/rustc_index/src/bit_set.rs b/compiler/rustc_index/src/bit_set.rs
index 07934389158..a4885aabe1f 100644
--- a/compiler/rustc_index/src/bit_set.rs
+++ b/compiler/rustc_index/src/bit_set.rs
@@ -234,6 +234,32 @@ impl<T: Idx> DenseBitSet<T> {
         self.clear_excess_bits();
     }
 
+    /// Checks whether any bit in the given range is a 1.
+    #[inline]
+    pub fn contains_any(&self, elems: impl RangeBounds<T>) -> bool {
+        let Some((start, end)) = inclusive_start_end(elems, self.domain_size) else {
+            return false;
+        };
+        let (start_word_index, start_mask) = word_index_and_mask(start);
+        let (end_word_index, end_mask) = word_index_and_mask(end);
+
+        if start_word_index == end_word_index {
+            self.words[start_word_index] & (end_mask | (end_mask - start_mask)) != 0
+        } else {
+            if self.words[start_word_index] & !(start_mask - 1) != 0 {
+                return true;
+            }
+
+            let remaining = start_word_index + 1..end_word_index;
+            if remaining.start <= remaining.end {
+                self.words[remaining].iter().any(|&w| w != 0)
+                    || self.words[end_word_index] & (end_mask | (end_mask - 1)) != 0
+            } else {
+                false
+            }
+        }
+    }
+
     /// Returns `true` if the set has changed.
     #[inline]
     pub fn remove(&mut self, elem: T) -> bool {
diff --git a/compiler/rustc_index/src/bit_set/tests.rs b/compiler/rustc_index/src/bit_set/tests.rs
index 323a66ddc6f..9ce4cf4293f 100644
--- a/compiler/rustc_index/src/bit_set/tests.rs
+++ b/compiler/rustc_index/src/bit_set/tests.rs
@@ -692,6 +692,25 @@ fn dense_last_set_before() {
     }
 }
 
+#[test]
+fn dense_contains_any() {
+    let mut set: DenseBitSet<usize> = DenseBitSet::new_empty(300);
+    assert!(!set.contains_any(0..300));
+    set.insert_range(10..20);
+    set.insert_range(60..70);
+    set.insert_range(150..=250);
+
+    assert!(set.contains_any(0..30));
+    assert!(set.contains_any(5..100));
+    assert!(set.contains_any(250..255));
+
+    assert!(!set.contains_any(20..59));
+    assert!(!set.contains_any(256..290));
+
+    set.insert(22);
+    assert!(set.contains_any(20..59));
+}
+
 #[bench]
 fn bench_insert(b: &mut Bencher) {
     let mut bs = DenseBitSet::new_filled(99999usize);
diff --git a/compiler/rustc_lint/messages.ftl b/compiler/rustc_lint/messages.ftl
index 17485a838f3..e7e60e8701a 100644
--- a/compiler/rustc_lint/messages.ftl
+++ b/compiler/rustc_lint/messages.ftl
@@ -374,8 +374,6 @@ lint_improper_ctypes = `extern` {$desc} uses type `{$ty}`, which is not FFI-safe
     .label = not FFI-safe
     .note = the type is defined here
 
-lint_improper_ctypes_128bit = 128-bit integers don't currently have a known stable ABI
-
 lint_improper_ctypes_array_help = consider passing a pointer to the array
 
 lint_improper_ctypes_array_reason = passing raw arrays by value is not FFI-safe
diff --git a/compiler/rustc_lint/src/types.rs b/compiler/rustc_lint/src/types.rs
index 77dc6335113..fec23354c91 100644
--- a/compiler/rustc_lint/src/types.rs
+++ b/compiler/rustc_lint/src/types.rs
@@ -1,9 +1,7 @@
 use std::iter;
 use std::ops::ControlFlow;
 
-use rustc_abi::{
-    BackendRepr, Integer, IntegerType, TagEncoding, VariantIdx, Variants, WrappingRange,
-};
+use rustc_abi::{BackendRepr, TagEncoding, VariantIdx, Variants, WrappingRange};
 use rustc_data_structures::fx::FxHashSet;
 use rustc_errors::DiagMessage;
 use rustc_hir::intravisit::VisitorExt;
@@ -1284,14 +1282,6 @@ impl<'a, 'tcx> ImproperCTypesVisitor<'a, 'tcx> {
                             };
                         }
 
-                        if let Some(IntegerType::Fixed(Integer::I128, _)) = def.repr().int {
-                            return FfiUnsafe {
-                                ty,
-                                reason: fluent::lint_improper_ctypes_128bit,
-                                help: None,
-                            };
-                        }
-
                         use improper_ctypes::check_non_exhaustive_variant;
 
                         let non_exhaustive = def.variant_list_has_applicable_non_exhaustive();
@@ -1324,10 +1314,6 @@ impl<'a, 'tcx> ImproperCTypesVisitor<'a, 'tcx> {
             // but only the base type is relevant for being representable in FFI.
             ty::Pat(base, ..) => self.check_type_for_ffi(acc, base),
 
-            ty::Int(ty::IntTy::I128) | ty::Uint(ty::UintTy::U128) => {
-                FfiUnsafe { ty, reason: fluent::lint_improper_ctypes_128bit, help: None }
-            }
-
             // Primitive types with a stable representation.
             ty::Bool | ty::Int(..) | ty::Uint(..) | ty::Float(..) | ty::Never => FfiSafe,
 
diff --git a/compiler/rustc_middle/src/dep_graph/mod.rs b/compiler/rustc_middle/src/dep_graph/mod.rs
index 931d67087ac..0a8e6153817 100644
--- a/compiler/rustc_middle/src/dep_graph/mod.rs
+++ b/compiler/rustc_middle/src/dep_graph/mod.rs
@@ -2,6 +2,7 @@ use rustc_data_structures::profiling::SelfProfilerRef;
 use rustc_query_system::ich::StableHashingContext;
 use rustc_session::Session;
 
+use crate::ty::print::with_reduced_queries;
 use crate::ty::{self, TyCtxt};
 
 #[macro_use]
@@ -84,4 +85,8 @@ impl<'tcx> DepContext for TyCtxt<'tcx> {
     fn dep_kind_info(&self, dk: DepKind) -> &DepKindStruct<'tcx> {
         &self.query_kinds[dk.as_usize()]
     }
+
+    fn with_reduced_queries<T>(self, f: impl FnOnce() -> T) -> T {
+        with_reduced_queries!(f())
+    }
 }
diff --git a/compiler/rustc_middle/src/hir/mod.rs b/compiler/rustc_middle/src/hir/mod.rs
index a28dcb0cb8e..d1f5caaafb2 100644
--- a/compiler/rustc_middle/src/hir/mod.rs
+++ b/compiler/rustc_middle/src/hir/mod.rs
@@ -71,6 +71,7 @@ impl ModuleItems {
         self.opaques.iter().copied()
     }
 
+    /// Closures and inline consts
     pub fn nested_bodies(&self) -> impl Iterator<Item = LocalDefId> {
         self.nested_bodies.iter().copied()
     }
@@ -79,6 +80,14 @@ impl ModuleItems {
         self.owners().map(|id| id.def_id)
     }
 
+    /// Closures and inline consts
+    pub fn par_nested_bodies(
+        &self,
+        f: impl Fn(LocalDefId) -> Result<(), ErrorGuaranteed> + DynSend + DynSync,
+    ) -> Result<(), ErrorGuaranteed> {
+        try_par_for_each_in(&self.nested_bodies[..], |&&id| f(id))
+    }
+
     pub fn par_items(
         &self,
         f: impl Fn(ItemId) -> Result<(), ErrorGuaranteed> + DynSend + DynSync,
diff --git a/compiler/rustc_middle/src/query/mod.rs b/compiler/rustc_middle/src/query/mod.rs
index 542653efd30..d900e16b005 100644
--- a/compiler/rustc_middle/src/query/mod.rs
+++ b/compiler/rustc_middle/src/query/mod.rs
@@ -1148,8 +1148,8 @@ rustc_queries! {
         desc { |tcx| "checking deathness of variables in {}", describe_as_module(key, tcx) }
     }
 
-    query check_mod_type_wf(key: LocalModDefId) -> Result<(), ErrorGuaranteed> {
-        desc { |tcx| "checking that types are well-formed in {}", describe_as_module(key, tcx) }
+    query check_type_wf(key: ()) -> Result<(), ErrorGuaranteed> {
+        desc { "checking that types are well-formed" }
         return_result_from_ensure_ok
     }
 
diff --git a/compiler/rustc_middle/src/thir/visit.rs b/compiler/rustc_middle/src/thir/visit.rs
index 4da4dc3c02e..d8743814d79 100644
--- a/compiler/rustc_middle/src/thir/visit.rs
+++ b/compiler/rustc_middle/src/thir/visit.rs
@@ -3,6 +3,9 @@ use super::{
     Pat, PatKind, Stmt, StmtKind, Thir,
 };
 
+/// Every `walk_*` method uses deconstruction to access fields of structs and
+/// enums. This will result in a compile error if a field is added, which makes
+/// it more likely the appropriate visit call will be added for it.
 pub trait Visitor<'thir, 'tcx: 'thir>: Sized {
     fn thir(&self) -> &'thir Thir<'tcx>;
 
diff --git a/compiler/rustc_middle/src/ty/layout.rs b/compiler/rustc_middle/src/ty/layout.rs
index 7ebfebea44e..c2ae6b06192 100644
--- a/compiler/rustc_middle/src/ty/layout.rs
+++ b/compiler/rustc_middle/src/ty/layout.rs
@@ -934,7 +934,7 @@ where
                             .unwrap(),
                     ),
                     Variants::Multiple { tag, tag_field, .. } => {
-                        if i == tag_field {
+                        if FieldIdx::from_usize(i) == tag_field {
                             return TyMaybeWithLayout::TyAndLayout(tag_layout(tag));
                         }
                         TyMaybeWithLayout::Ty(args.as_coroutine().prefix_tys()[i])
@@ -1060,8 +1060,10 @@ where
                         tag_field,
                         variants,
                         ..
-                    } if variants.len() == 2 && this.fields.offset(*tag_field) == offset => {
-                        let tagged_variant = if untagged_variant.as_u32() == 0 {
+                    } if variants.len() == 2
+                        && this.fields.offset(tag_field.as_usize()) == offset =>
+                    {
+                        let tagged_variant = if *untagged_variant == VariantIdx::ZERO {
                             VariantIdx::from_u32(1)
                         } else {
                             VariantIdx::from_u32(0)
diff --git a/compiler/rustc_middle/src/ty/print/pretty.rs b/compiler/rustc_middle/src/ty/print/pretty.rs
index 877bea095f9..673a89a8134 100644
--- a/compiler/rustc_middle/src/ty/print/pretty.rs
+++ b/compiler/rustc_middle/src/ty/print/pretty.rs
@@ -1886,7 +1886,7 @@ pub trait PrettyPrinter<'tcx>: Printer<'tcx> + fmt::Write {
     ) -> Result<(), PrintError> {
         define_scoped_cx!(self);
 
-        if self.should_print_verbose() {
+        if with_reduced_queries() || self.should_print_verbose() {
             p!(write("ValTree({:?}: ", cv.valtree), print(cv.ty), ")");
             return Ok(());
         }
diff --git a/compiler/rustc_mir_transform/src/coroutine/drop.rs b/compiler/rustc_mir_transform/src/coroutine/drop.rs
index 6b266da5a69..625e53f9959 100644
--- a/compiler/rustc_mir_transform/src/coroutine/drop.rs
+++ b/compiler/rustc_mir_transform/src/coroutine/drop.rs
@@ -382,12 +382,34 @@ pub(super) fn expand_async_drops<'tcx>(
             dropline_call_bb = Some(drop_call_bb);
         }
 
-        // value needed only for return-yields or gen-coroutines, so just const here
-        let value = Operand::Constant(Box::new(ConstOperand {
-            span: body.span,
-            user_ty: None,
-            const_: Const::from_bool(tcx, false),
-        }));
+        let value =
+            if matches!(coroutine_kind, CoroutineKind::Desugared(CoroutineDesugaring::AsyncGen, _))
+            {
+                // For AsyncGen we need `yield Poll<OptRet>::Pending`
+                let full_yield_ty = body.yield_ty().unwrap();
+                let ty::Adt(_poll_adt, args) = *full_yield_ty.kind() else { bug!() };
+                let ty::Adt(_option_adt, args) = *args.type_at(0).kind() else { bug!() };
+                let yield_ty = args.type_at(0);
+                Operand::Constant(Box::new(ConstOperand {
+                    span: source_info.span,
+                    const_: Const::Unevaluated(
+                        UnevaluatedConst::new(
+                            tcx.require_lang_item(LangItem::AsyncGenPending, None),
+                            tcx.mk_args(&[yield_ty.into()]),
+                        ),
+                        full_yield_ty,
+                    ),
+                    user_ty: None,
+                }))
+            } else {
+                // value needed only for return-yields or gen-coroutines, so just const here
+                Operand::Constant(Box::new(ConstOperand {
+                    span: body.span,
+                    user_ty: None,
+                    const_: Const::from_bool(tcx, false),
+                }))
+            };
+
         use rustc_middle::mir::AssertKind::ResumedAfterDrop;
         let panic_bb = insert_panic_block(tcx, body, ResumedAfterDrop(coroutine_kind));
 
diff --git a/compiler/rustc_monomorphize/src/mono_checks/abi_check.rs b/compiler/rustc_monomorphize/src/mono_checks/abi_check.rs
index 5478e54a606..8dbbb4d1713 100644
--- a/compiler/rustc_monomorphize/src/mono_checks/abi_check.rs
+++ b/compiler/rustc_monomorphize/src/mono_checks/abi_check.rs
@@ -35,8 +35,6 @@ fn do_check_simd_vector_abi<'tcx>(
     is_call: bool,
     loc: impl Fn() -> (Span, HirId),
 ) {
-    // We check this on all functions, including those using the "Rust" ABI.
-    // For the "Rust" ABI it would be a bug if the lint ever triggered, but better safe than sorry.
     let feature_def = tcx.sess.target.features_for_correct_vector_abi();
     let codegen_attrs = tcx.codegen_fn_attrs(def_id);
     let have_feature = |feat: Symbol| {
@@ -123,8 +121,9 @@ fn do_check_wasm_abi<'tcx>(
     is_call: bool,
     loc: impl Fn() -> (Span, HirId),
 ) {
-    // Only proceed for `extern "C" fn` on wasm32-unknown-unknown (same check as what `adjust_for_foreign_abi` uses to call `compute_wasm_abi_info`),
-    // and only proceed if `wasm_c_abi_opt` indicates we should emit the lint.
+    // Only proceed for `extern "C" fn` on wasm32-unknown-unknown (same check as what
+    // `adjust_for_foreign_abi` uses to call `compute_wasm_abi_info`), and only proceed if
+    // `wasm_c_abi_opt` indicates we should emit the lint.
     if !(tcx.sess.target.arch == "wasm32"
         && tcx.sess.target.os == "unknown"
         && tcx.wasm_c_abi_opt() == WasmCAbi::Legacy { with_lint: true }
@@ -157,8 +156,15 @@ fn check_instance_abi<'tcx>(tcx: TyCtxt<'tcx>, instance: Instance<'tcx>) {
     else {
         // An error will be reported during codegen if we cannot determine the ABI of this
         // function.
+        tcx.dcx().delayed_bug("ABI computation failure should lead to compilation failure");
         return;
     };
+    // Unlike the call-site check, we do also check "Rust" ABI functions here.
+    // This should never trigger, *except* if we start making use of vector registers
+    // for the "Rust" ABI and the user disables those vector registers (which should trigger a
+    // warning as that's clearly disabling a "required" target feature for this target).
+    // Using such a function is where disabling the vector register actually can start leading
+    // to soundness issues, so erroring here seems good.
     let loc = || {
         let def_id = instance.def_id();
         (
@@ -179,7 +185,8 @@ fn check_call_site_abi<'tcx>(
     loc: impl Fn() -> (Span, HirId) + Copy,
 ) {
     if callee.fn_sig(tcx).abi().is_rustic_abi() {
-        // we directly handle the soundness of Rust ABIs
+        // We directly handle the soundness of Rust ABIs -- so let's skip the majority of
+        // call sites to avoid a perf regression.
         return;
     }
     let typing_env = ty::TypingEnv::fully_monomorphized();
diff --git a/compiler/rustc_parse/src/parser/tokenstream/tests.rs b/compiler/rustc_parse/src/parser/tokenstream/tests.rs
index aac75323ff3..19b2c98f5af 100644
--- a/compiler/rustc_parse/src/parser/tokenstream/tests.rs
+++ b/compiler/rustc_parse/src/parser/tokenstream/tests.rs
@@ -14,6 +14,10 @@ fn sp(a: u32, b: u32) -> Span {
     Span::with_root_ctxt(BytePos(a), BytePos(b))
 }
 
+fn cmp_token_stream(a: &TokenStream, b: &TokenStream) -> bool {
+    a.len() == b.len() && a.iter().zip(b.iter()).all(|(x, y)| x.eq_unspanned(y))
+}
+
 #[test]
 fn test_concat() {
     create_default_session_globals_then(|| {
@@ -25,7 +29,7 @@ fn test_concat() {
         eq_res.push_stream(test_snd);
         assert_eq!(test_res.iter().count(), 5);
         assert_eq!(eq_res.iter().count(), 5);
-        assert_eq!(test_res.eq_unspanned(&eq_res), true);
+        assert_eq!(cmp_token_stream(&test_res, &eq_res), true);
     })
 }
 
@@ -104,7 +108,7 @@ fn test_dotdotdot() {
         stream.push_tree(TokenTree::token_joint(token::Dot, sp(0, 1)));
         stream.push_tree(TokenTree::token_joint(token::Dot, sp(1, 2)));
         stream.push_tree(TokenTree::token_alone(token::Dot, sp(2, 3)));
-        assert!(stream.eq_unspanned(&string_to_ts("...")));
+        assert!(cmp_token_stream(&stream, &string_to_ts("...")));
         assert_eq!(stream.iter().count(), 1);
     })
 }
diff --git a/compiler/rustc_query_system/src/dep_graph/dep_node.rs b/compiler/rustc_query_system/src/dep_graph/dep_node.rs
index c0b3bd43e25..bdd1d5f3e88 100644
--- a/compiler/rustc_query_system/src/dep_graph/dep_node.rs
+++ b/compiler/rustc_query_system/src/dep_graph/dep_node.rs
@@ -178,9 +178,7 @@ pub trait DepNodeParams<Tcx: DepContext>: fmt::Debug + Sized {
         panic!("Not implemented. Accidentally called on anonymous node?")
     }
 
-    fn to_debug_str(&self, _: Tcx) -> String {
-        format!("{self:?}")
-    }
+    fn to_debug_str(&self, tcx: Tcx) -> String;
 
     /// This method tries to recover the query key from the given `DepNode`,
     /// something which is needed when forcing `DepNode`s during red-green
@@ -210,8 +208,11 @@ where
     }
 
     #[inline(always)]
-    default fn to_debug_str(&self, _: Tcx) -> String {
-        format!("{:?}", *self)
+    default fn to_debug_str(&self, tcx: Tcx) -> String {
+        // Make sure to print dep node params with reduced queries since printing
+        // may themselves call queries, which may lead to (possibly untracked!)
+        // query cycles.
+        tcx.with_reduced_queries(|| format!("{self:?}"))
     }
 
     #[inline(always)]
diff --git a/compiler/rustc_query_system/src/dep_graph/mod.rs b/compiler/rustc_query_system/src/dep_graph/mod.rs
index 89d1db87809..512034a8b2f 100644
--- a/compiler/rustc_query_system/src/dep_graph/mod.rs
+++ b/compiler/rustc_query_system/src/dep_graph/mod.rs
@@ -88,6 +88,8 @@ pub trait DepContext: Copy {
             f(self, dep_node)
         }
     }
+
+    fn with_reduced_queries<T>(self, _: impl FnOnce() -> T) -> T;
 }
 
 pub trait Deps: DynSync {
diff --git a/compiler/rustc_smir/src/rustc_smir/convert/abi.rs b/compiler/rustc_smir/src/rustc_smir/convert/abi.rs
index 06dfaf079a3..64901ee0502 100644
--- a/compiler/rustc_smir/src/rustc_smir/convert/abi.rs
+++ b/compiler/rustc_smir/src/rustc_smir/convert/abi.rs
@@ -180,7 +180,7 @@ impl<'tcx> Stable<'tcx> for rustc_abi::Variants<rustc_abi::FieldIdx, rustc_abi::
                 VariantsShape::Multiple {
                     tag: tag.stable(tables),
                     tag_encoding: tag_encoding.stable(tables),
-                    tag_field: *tag_field,
+                    tag_field: tag_field.stable(tables),
                     variants: variants.iter().as_slice().stable(tables),
                 }
             }
diff --git a/compiler/rustc_target/src/callconv/mod.rs b/compiler/rustc_target/src/callconv/mod.rs
index d2e49cea647..dcb79cce759 100644
--- a/compiler/rustc_target/src/callconv/mod.rs
+++ b/compiler/rustc_target/src/callconv/mod.rs
@@ -7,7 +7,7 @@ use rustc_abi::{
 use rustc_macros::HashStable_Generic;
 
 pub use crate::spec::AbiMap;
-use crate::spec::{HasTargetSpec, HasWasmCAbiOpt, HasX86AbiOpt, RustcAbi, WasmCAbi};
+use crate::spec::{HasTargetSpec, HasWasmCAbiOpt, HasX86AbiOpt, WasmCAbi};
 
 mod aarch64;
 mod amdgpu;
@@ -696,24 +696,6 @@ impl<'a, Ty> FnAbi<'a, Ty> {
             _ => {}
         };
 
-        // Decides whether we can pass the given SIMD argument via `PassMode::Direct`.
-        // May only return `true` if the target will always pass those arguments the same way,
-        // no matter what the user does with `-Ctarget-feature`! In other words, whatever
-        // target features are required to pass a SIMD value in registers must be listed in
-        // the `abi_required_features` for the current target and ABI.
-        let can_pass_simd_directly = |arg: &ArgAbi<'_, Ty>| match &*spec.arch {
-            // On x86, if we have SSE2 (which we have by default for x86_64), we can always pass up
-            // to 128-bit-sized vectors.
-            "x86" if spec.rustc_abi == Some(RustcAbi::X86Sse2) => arg.layout.size.bits() <= 128,
-            "x86_64" if spec.rustc_abi != Some(RustcAbi::X86Softfloat) => {
-                // FIXME once https://github.com/bytecodealliance/wasmtime/issues/10254 is fixed
-                // accept vectors up to 128bit rather than vectors of exactly 128bit.
-                arg.layout.size.bits() == 128
-            }
-            // So far, we haven't implemented this logic for any other target.
-            _ => false,
-        };
-
         for (arg_idx, arg) in self
             .args
             .iter_mut()
@@ -813,9 +795,10 @@ impl<'a, Ty> FnAbi<'a, Ty> {
                     // target feature sets. Some more information about this
                     // issue can be found in #44367.
                     //
-                    // Note that the intrinsic ABI is exempt here as those are not
-                    // real functions anyway, and the backend expects very specific types.
-                    if spec.simd_types_indirect && !can_pass_simd_directly(arg) {
+                    // We *could* do better in some cases, e.g. on x86_64 targets where SSE2 is
+                    // required. However, it turns out that that makes LLVM worse at optimizing this
+                    // code, so we pass things indirectly even there. See #139029 for more on that.
+                    if spec.simd_types_indirect {
                         arg.make_indirect();
                     }
                 }
diff --git a/compiler/rustc_target/src/target_features.rs b/compiler/rustc_target/src/target_features.rs
index 576c9bd6b57..682c4c5068f 100644
--- a/compiler/rustc_target/src/target_features.rs
+++ b/compiler/rustc_target/src/target_features.rs
@@ -710,29 +710,35 @@ static LOONGARCH_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     // tidy-alphabetical-end
 ];
 
+#[rustfmt::skip]
 const IBMZ_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     // tidy-alphabetical-start
     ("backchain", Unstable(sym::s390x_target_feature), &[]),
+    ("concurrent-functions", Unstable(sym::s390x_target_feature), &[]),
     ("deflate-conversion", Unstable(sym::s390x_target_feature), &[]),
     ("enhanced-sort", Unstable(sym::s390x_target_feature), &[]),
     ("guarded-storage", Unstable(sym::s390x_target_feature), &[]),
     ("high-word", Unstable(sym::s390x_target_feature), &[]),
+    // LLVM does not define message-security-assist-extension versions 1, 2, 6, 10 and 11.
+    ("message-security-assist-extension12", Unstable(sym::s390x_target_feature), &[]),
+    ("message-security-assist-extension3", Unstable(sym::s390x_target_feature), &[]),
+    ("message-security-assist-extension4", Unstable(sym::s390x_target_feature), &[]),
+    ("message-security-assist-extension5", Unstable(sym::s390x_target_feature), &[]),
+    ("message-security-assist-extension8", Unstable(sym::s390x_target_feature), &["message-security-assist-extension3"]),
+    ("message-security-assist-extension9", Unstable(sym::s390x_target_feature), &["message-security-assist-extension3", "message-security-assist-extension4"]),
+    ("miscellaneous-extensions-2", Unstable(sym::s390x_target_feature), &[]),
+    ("miscellaneous-extensions-3", Unstable(sym::s390x_target_feature), &[]),
+    ("miscellaneous-extensions-4", Unstable(sym::s390x_target_feature), &[]),
     ("nnp-assist", Unstable(sym::s390x_target_feature), &["vector"]),
     ("transactional-execution", Unstable(sym::s390x_target_feature), &[]),
     ("vector", Unstable(sym::s390x_target_feature), &[]),
     ("vector-enhancements-1", Unstable(sym::s390x_target_feature), &["vector"]),
     ("vector-enhancements-2", Unstable(sym::s390x_target_feature), &["vector-enhancements-1"]),
+    ("vector-enhancements-3", Unstable(sym::s390x_target_feature), &["vector-enhancements-2"]),
     ("vector-packed-decimal", Unstable(sym::s390x_target_feature), &["vector"]),
-    (
-        "vector-packed-decimal-enhancement",
-        Unstable(sym::s390x_target_feature),
-        &["vector-packed-decimal"],
-    ),
-    (
-        "vector-packed-decimal-enhancement-2",
-        Unstable(sym::s390x_target_feature),
-        &["vector-packed-decimal-enhancement"],
-    ),
+    ("vector-packed-decimal-enhancement", Unstable(sym::s390x_target_feature), &["vector-packed-decimal"]),
+    ("vector-packed-decimal-enhancement-2", Unstable(sym::s390x_target_feature), &["vector-packed-decimal-enhancement"]),
+    ("vector-packed-decimal-enhancement-3", Unstable(sym::s390x_target_feature), &["vector-packed-decimal-enhancement-2"]),
     // tidy-alphabetical-end
 ];
 
diff --git a/compiler/rustc_trait_selection/src/error_reporting/traits/suggestions.rs b/compiler/rustc_trait_selection/src/error_reporting/traits/suggestions.rs
index c4f1f7d712a..9c301373cf9 100644
--- a/compiler/rustc_trait_selection/src/error_reporting/traits/suggestions.rs
+++ b/compiler/rustc_trait_selection/src/error_reporting/traits/suggestions.rs
@@ -3841,7 +3841,9 @@ impl<'a, 'tcx> TypeErrCtxt<'a, 'tcx> {
                     .expr_ty_adjusted_opt(inner_expr)
                     .unwrap_or(Ty::new_misc_error(tcx));
                 let span = inner_expr.span;
-                if Some(span) != err.span.primary_span() {
+                if Some(span) != err.span.primary_span()
+                    && !span.in_external_macro(tcx.sess.source_map())
+                {
                     err.span_label(
                         span,
                         if ty.references_error() {
diff --git a/compiler/rustc_transmute/src/layout/tree.rs b/compiler/rustc_transmute/src/layout/tree.rs
index 7cf712ce9e9..ff665695b5a 100644
--- a/compiler/rustc_transmute/src/layout/tree.rs
+++ b/compiler/rustc_transmute/src/layout/tree.rs
@@ -451,7 +451,7 @@ pub(crate) mod rustc {
 
                     // For enums (but not coroutines), the tag field is
                     // currently always the first field of the layout.
-                    assert_eq!(*tag_field, 0);
+                    assert_eq!(*tag_field, FieldIdx::ZERO);
 
                     let variants = def.discriminants(cx.tcx()).try_fold(
                         Self::uninhabited(),
diff --git a/compiler/rustc_ty_utils/src/layout.rs b/compiler/rustc_ty_utils/src/layout.rs
index ad57555bd24..9774263e4c9 100644
--- a/compiler/rustc_ty_utils/src/layout.rs
+++ b/compiler/rustc_ty_utils/src/layout.rs
@@ -932,7 +932,7 @@ fn variant_info_for_coroutine<'tcx>(
             // However, if the discriminant is placed past the end of the variant, then we need
             // to factor in the size of the discriminant manually. This really should be refactored
             // better, but this "works" for now.
-            if layout.fields.offset(tag_field) >= variant_size {
+            if layout.fields.offset(tag_field.as_usize()) >= variant_size {
                 variant_size += match tag_encoding {
                     TagEncoding::Direct => tag.size(cx),
                     _ => Size::ZERO,
diff --git a/compiler/rustc_type_ir/src/interner.rs b/compiler/rustc_type_ir/src/interner.rs
index a9917192144..05ca6f10323 100644
--- a/compiler/rustc_type_ir/src/interner.rs
+++ b/compiler/rustc_type_ir/src/interner.rs
@@ -4,7 +4,6 @@ use std::ops::Deref;
 
 use rustc_ast_ir::Movability;
 use rustc_index::bit_set::DenseBitSet;
-use smallvec::SmallVec;
 
 use crate::fold::TypeFoldable;
 use crate::inherent::*;
@@ -382,28 +381,45 @@ impl<T, R> CollectAndApply<T, R> for T {
         F: FnOnce(&[T]) -> R,
     {
         // This code is hot enough that it's worth specializing for the most
-        // common length lists, to avoid the overhead of `SmallVec` creation.
-        // Lengths 0, 1, and 2 typically account for ~95% of cases. If
-        // `size_hint` is incorrect a panic will occur via an `unwrap` or an
-        // `assert`.
-        match iter.size_hint() {
-            (0, Some(0)) => {
-                assert!(iter.next().is_none());
-                f(&[])
-            }
-            (1, Some(1)) => {
-                let t0 = iter.next().unwrap();
-                assert!(iter.next().is_none());
-                f(&[t0])
-            }
-            (2, Some(2)) => {
-                let t0 = iter.next().unwrap();
-                let t1 = iter.next().unwrap();
-                assert!(iter.next().is_none());
-                f(&[t0, t1])
-            }
-            _ => f(&iter.collect::<SmallVec<[_; 8]>>()),
-        }
+        // common length lists, to avoid the overhead of `Vec` creation.
+
+        let Some(t0) = iter.next() else {
+            return f(&[]);
+        };
+
+        let Some(t1) = iter.next() else {
+            return f(&[t0]);
+        };
+
+        let Some(t2) = iter.next() else {
+            return f(&[t0, t1]);
+        };
+
+        let Some(t3) = iter.next() else {
+            return f(&[t0, t1, t2]);
+        };
+
+        let Some(t4) = iter.next() else {
+            return f(&[t0, t1, t2, t3]);
+        };
+
+        let Some(t5) = iter.next() else {
+            return f(&[t0, t1, t2, t3, t4]);
+        };
+
+        let Some(t6) = iter.next() else {
+            return f(&[t0, t1, t2, t3, t4, t5]);
+        };
+
+        let Some(t7) = iter.next() else {
+            return f(&[t0, t1, t2, t3, t4, t5, t6]);
+        };
+
+        let Some(t8) = iter.next() else {
+            return f(&[t0, t1, t2, t3, t4, t5, t6, t7]);
+        };
+
+        f(&[t0, t1, t2, t3, t4, t5, t6, t7, t8].into_iter().chain(iter).collect::<Vec<_>>())
     }
 }
 
@@ -419,29 +435,57 @@ impl<T, R, E> CollectAndApply<T, R> for Result<T, E> {
         F: FnOnce(&[T]) -> R,
     {
         // This code is hot enough that it's worth specializing for the most
-        // common length lists, to avoid the overhead of `SmallVec` creation.
-        // Lengths 0, 1, and 2 typically account for ~95% of cases. If
-        // `size_hint` is incorrect a panic will occur via an `unwrap` or an
-        // `assert`, unless a failure happens first, in which case the result
-        // will be an error anyway.
-        Ok(match iter.size_hint() {
-            (0, Some(0)) => {
-                assert!(iter.next().is_none());
-                f(&[])
-            }
-            (1, Some(1)) => {
-                let t0 = iter.next().unwrap()?;
-                assert!(iter.next().is_none());
-                f(&[t0])
-            }
-            (2, Some(2)) => {
-                let t0 = iter.next().unwrap()?;
-                let t1 = iter.next().unwrap()?;
-                assert!(iter.next().is_none());
-                f(&[t0, t1])
-            }
-            _ => f(&iter.collect::<Result<SmallVec<[_; 8]>, _>>()?),
-        })
+        // common length lists, to avoid the overhead of `Vec` creation.
+
+        let Some(t0) = iter.next() else {
+            return Ok(f(&[]));
+        };
+        let t0 = t0?;
+
+        let Some(t1) = iter.next() else {
+            return Ok(f(&[t0]));
+        };
+        let t1 = t1?;
+
+        let Some(t2) = iter.next() else {
+            return Ok(f(&[t0, t1]));
+        };
+        let t2 = t2?;
+
+        let Some(t3) = iter.next() else {
+            return Ok(f(&[t0, t1, t2]));
+        };
+        let t3 = t3?;
+
+        let Some(t4) = iter.next() else {
+            return Ok(f(&[t0, t1, t2, t3]));
+        };
+        let t4 = t4?;
+
+        let Some(t5) = iter.next() else {
+            return Ok(f(&[t0, t1, t2, t3, t4]));
+        };
+        let t5 = t5?;
+
+        let Some(t6) = iter.next() else {
+            return Ok(f(&[t0, t1, t2, t3, t4, t5]));
+        };
+        let t6 = t6?;
+
+        let Some(t7) = iter.next() else {
+            return Ok(f(&[t0, t1, t2, t3, t4, t5, t6]));
+        };
+        let t7 = t7?;
+
+        let Some(t8) = iter.next() else {
+            return Ok(f(&[t0, t1, t2, t3, t4, t5, t6, t7]));
+        };
+        let t8 = t8?;
+
+        Ok(f(&[Ok(t0), Ok(t1), Ok(t2), Ok(t3), Ok(t4), Ok(t5), Ok(t6), Ok(t7), Ok(t8)]
+            .into_iter()
+            .chain(iter)
+            .collect::<Result<Vec<_>, _>>()?))
     }
 }
 
diff --git a/library/alloc/src/collections/btree/map.rs b/library/alloc/src/collections/btree/map.rs
index 52b98291ff9..17c16e4aaff 100644
--- a/library/alloc/src/collections/btree/map.rs
+++ b/library/alloc/src/collections/btree/map.rs
@@ -1416,18 +1416,18 @@ impl<K, V, A: Allocator + Clone> BTreeMap<K, V, A> {
     ///
     /// # Examples
     ///
-    /// Splitting a map into even and odd keys, reusing the original map:
-    ///
     /// ```
     /// #![feature(btree_extract_if)]
     /// use std::collections::BTreeMap;
     ///
+    /// // Splitting a map into even and odd keys, reusing the original map:
     /// let mut map: BTreeMap<i32, i32> = (0..8).map(|x| (x, x)).collect();
     /// let evens: BTreeMap<_, _> = map.extract_if(.., |k, _v| k % 2 == 0).collect();
     /// let odds = map;
     /// assert_eq!(evens.keys().copied().collect::<Vec<_>>(), [0, 2, 4, 6]);
     /// assert_eq!(odds.keys().copied().collect::<Vec<_>>(), [1, 3, 5, 7]);
     ///
+    /// // Splitting a map into low and high halves, reusing the original map:
     /// let mut map: BTreeMap<i32, i32> = (0..8).map(|x| (x, x)).collect();
     /// let low: BTreeMap<_, _> = map.extract_if(0..4, |_k, _v| true).collect();
     /// let high = map;
diff --git a/library/alloc/src/collections/btree/set.rs b/library/alloc/src/collections/btree/set.rs
index 780bd8b0dd1..51418036f42 100644
--- a/library/alloc/src/collections/btree/set.rs
+++ b/library/alloc/src/collections/btree/set.rs
@@ -1201,21 +1201,21 @@ impl<T, A: Allocator + Clone> BTreeSet<T, A> {
     /// [`retain`]: BTreeSet::retain
     /// # Examples
     ///
-    /// Splitting a set into even and odd values, reusing the original set:
-    ///
     /// ```
     /// #![feature(btree_extract_if)]
     /// use std::collections::BTreeSet;
     ///
+    /// // Splitting a set into even and odd values, reusing the original set:
     /// let mut set: BTreeSet<i32> = (0..8).collect();
     /// let evens: BTreeSet<_> = set.extract_if(.., |v| v % 2 == 0).collect();
     /// let odds = set;
     /// assert_eq!(evens.into_iter().collect::<Vec<_>>(), vec![0, 2, 4, 6]);
     /// assert_eq!(odds.into_iter().collect::<Vec<_>>(), vec![1, 3, 5, 7]);
     ///
-    /// let mut map: BTreeSet<i32> = (0..8).collect();
-    /// let low: BTreeSet<_> = map.extract_if(0..4, |_v| true).collect();
-    /// let high = map;
+    /// // Splitting a set into low and high halves, reusing the original set:
+    /// let mut set: BTreeSet<i32> = (0..8).collect();
+    /// let low: BTreeSet<_> = set.extract_if(0..4, |_v| true).collect();
+    /// let high = set;
     /// assert_eq!(low.into_iter().collect::<Vec<_>>(), [0, 1, 2, 3]);
     /// assert_eq!(high.into_iter().collect::<Vec<_>>(), [4, 5, 6, 7]);
     /// ```
diff --git a/library/core/src/convert/num.rs b/library/core/src/convert/num.rs
index d5cb10a5d1c..50616732b77 100644
--- a/library/core/src/convert/num.rs
+++ b/library/core/src/convert/num.rs
@@ -175,7 +175,6 @@ impl_from!(u8 => f16, #[stable(feature = "lossless_float_conv", since = "1.6.0")
 impl_from!(u8 => f32, #[stable(feature = "lossless_float_conv", since = "1.6.0")]);
 impl_from!(u8 => f64, #[stable(feature = "lossless_float_conv", since = "1.6.0")]);
 impl_from!(u8 => f128, #[stable(feature = "lossless_float_conv", since = "1.6.0")]);
-impl_from!(u16 => f16, #[stable(feature = "lossless_float_conv", since = "1.6.0")]);
 impl_from!(u16 => f32, #[stable(feature = "lossless_float_conv", since = "1.6.0")]);
 impl_from!(u16 => f64, #[stable(feature = "lossless_float_conv", since = "1.6.0")]);
 impl_from!(u16 => f128, #[stable(feature = "lossless_float_conv", since = "1.6.0")]);
diff --git a/library/core/src/fmt/mod.rs b/library/core/src/fmt/mod.rs
index 5978cb660f6..145e581d1fb 100644
--- a/library/core/src/fmt/mod.rs
+++ b/library/core/src/fmt/mod.rs
@@ -928,6 +928,20 @@ pub use macros::Debug;
 /// [tostring]: ../../std/string/trait.ToString.html
 /// [tostring_function]: ../../std/string/trait.ToString.html#tymethod.to_string
 ///
+/// # Completeness and parseability
+///
+/// `Display` for a type might not necessarily be a lossless or complete representation of the type.
+/// It may omit internal state, precision, or other information the type does not consider important
+/// for user-facing output, as determined by the type. As such, the output of `Display` might not be
+/// possible to parse, and even if it is, the result of parsing might not exactly match the original
+/// value.
+///
+/// However, if a type has a lossless `Display` implementation whose output is meant to be
+/// conveniently machine-parseable and not just meant for human consumption, then the type may wish
+/// to accept the same format in `FromStr`, and document that usage. Having both `Display` and
+/// `FromStr` implementations where the result of `Display` cannot be parsed with `FromStr` may
+/// surprise users.
+///
 /// # Internationalization
 ///
 /// Because a type can only have one `Display` implementation, it is often preferable
diff --git a/library/core/src/primitive_docs.rs b/library/core/src/primitive_docs.rs
index 10b11613f90..cb1cf818bf0 100644
--- a/library/core/src/primitive_docs.rs
+++ b/library/core/src/primitive_docs.rs
@@ -1428,6 +1428,18 @@ mod prim_i64 {}
 #[rustc_doc_primitive = "i128"]
 //
 /// The 128-bit signed integer type.
+///
+/// # ABI compatibility
+///
+/// Rust's `i128` is expected to be ABI-compatible with C's `__int128` on platforms where the type
+/// is available, which includes most 64-bit architectures. If any platforms that do not specify
+/// `__int128` are updated to introduce it, the Rust `i128` ABI on relevant targets will be changed
+/// to match.
+///
+/// It is important to note that in C, `__int128` is _not_ the same as `_BitInt(128)`, and the two
+/// types are allowed to have different ABIs. In particular, on x86, `__int128` and `_BitInt(128)`
+/// do not use the same alignment. `i128` is intended to always match `__int128` and does not
+/// attempt to match `_BitInt(128)` on platforms without `__int128`.
 #[stable(feature = "i128", since = "1.26.0")]
 mod prim_i128 {}
 
@@ -1458,6 +1470,8 @@ mod prim_u64 {}
 #[rustc_doc_primitive = "u128"]
 //
 /// The 128-bit unsigned integer type.
+///
+/// Please see [the documentation for `i128`](prim@i128) for information on ABI compatibility.
 #[stable(feature = "i128", since = "1.26.0")]
 mod prim_u128 {}
 
diff --git a/library/core/src/str/traits.rs b/library/core/src/str/traits.rs
index 4baf9aacad7..b9559c83171 100644
--- a/library/core/src/str/traits.rs
+++ b/library/core/src/str/traits.rs
@@ -756,6 +756,20 @@ unsafe impl SliceIndex<str> for ops::RangeToInclusive<usize> {
 /// parse an `i32` with `FromStr`, but not a `&i32`. You can parse a struct that
 /// contains an `i32`, but not one that contains an `&i32`.
 ///
+/// # Input format and round-tripping
+///
+/// The input format expected by a type's `FromStr` implementation depends on the type. Check the
+/// type's documentation for the input formats it knows how to parse. Note that the input format of
+/// a type's `FromStr` implementation might not necessarily accept the output format of its
+/// `Display` implementation, and even if it does, the `Display` implementation may not be lossless
+/// so the round-trip may lose information.
+///
+/// However, if a type has a lossless `Display` implementation whose output is meant to be
+/// conveniently machine-parseable and not just meant for human consumption, then the type may wish
+/// to accept the same format in `FromStr`, and document that usage. Having both `Display` and
+/// `FromStr` implementations where the result of `Display` cannot be parsed with `FromStr` may
+/// surprise users.
+///
 /// # Examples
 ///
 /// Basic implementation of `FromStr` on an example `Point` type:
diff --git a/library/coretests/tests/lib.rs b/library/coretests/tests/lib.rs
index dd7cdd79c0d..92b920dd775 100644
--- a/library/coretests/tests/lib.rs
+++ b/library/coretests/tests/lib.rs
@@ -30,6 +30,7 @@
 #![feature(duration_constructors)]
 #![feature(duration_constructors_lite)]
 #![feature(error_generic_member_access)]
+#![feature(exact_div)]
 #![feature(exact_size_is_empty)]
 #![feature(extend_one)]
 #![feature(extern_types)]
diff --git a/library/coretests/tests/num/int_macros.rs b/library/coretests/tests/num/int_macros.rs
index 0d9fb9e797e..41d399c1ad9 100644
--- a/library/coretests/tests/num/int_macros.rs
+++ b/library/coretests/tests/num/int_macros.rs
@@ -683,5 +683,43 @@ macro_rules! int_module {
                 assert_eq_const_safe!($T: <$T>::unbounded_shr(17, SHIFT_AMOUNT_OVERFLOW3), 0);
             }
         }
+
+        const EXACT_DIV_SUCCESS_DIVIDEND1: $T = 42;
+        const EXACT_DIV_SUCCESS_DIVISOR1: $T = 6;
+        const EXACT_DIV_SUCCESS_QUOTIENT1: $T = 7;
+        const EXACT_DIV_SUCCESS_DIVIDEND2: $T = 18;
+        const EXACT_DIV_SUCCESS_DIVISOR2: $T = 3;
+        const EXACT_DIV_SUCCESS_QUOTIENT2: $T = 6;
+        const EXACT_DIV_SUCCESS_DIVIDEND3: $T = -91;
+        const EXACT_DIV_SUCCESS_DIVISOR3: $T = 13;
+        const EXACT_DIV_SUCCESS_QUOTIENT3: $T = -7;
+        const EXACT_DIV_SUCCESS_DIVIDEND4: $T = -57;
+        const EXACT_DIV_SUCCESS_DIVISOR4: $T = -3;
+        const EXACT_DIV_SUCCESS_QUOTIENT4: $T = 19;
+
+        test_runtime_and_compiletime! {
+            fn test_exact_div() {
+                // 42 / 6
+                assert_eq_const_safe!(Option<$T>: <$T>::checked_exact_div(EXACT_DIV_SUCCESS_DIVIDEND1, EXACT_DIV_SUCCESS_DIVISOR1), Some(EXACT_DIV_SUCCESS_QUOTIENT1));
+                assert_eq_const_safe!($T: <$T>::exact_div(EXACT_DIV_SUCCESS_DIVIDEND1, EXACT_DIV_SUCCESS_DIVISOR1), EXACT_DIV_SUCCESS_QUOTIENT1);
+
+                // 18 / 3
+                assert_eq_const_safe!(Option<$T>: <$T>::checked_exact_div(EXACT_DIV_SUCCESS_DIVIDEND2, EXACT_DIV_SUCCESS_DIVISOR2), Some(EXACT_DIV_SUCCESS_QUOTIENT2));
+                assert_eq_const_safe!($T: <$T>::exact_div(EXACT_DIV_SUCCESS_DIVIDEND2, EXACT_DIV_SUCCESS_DIVISOR2), EXACT_DIV_SUCCESS_QUOTIENT2);
+
+                // -91 / 13
+                assert_eq_const_safe!(Option<$T>: <$T>::checked_exact_div(EXACT_DIV_SUCCESS_DIVIDEND3, EXACT_DIV_SUCCESS_DIVISOR3), Some(EXACT_DIV_SUCCESS_QUOTIENT3));
+                assert_eq_const_safe!($T: <$T>::exact_div(EXACT_DIV_SUCCESS_DIVIDEND3, EXACT_DIV_SUCCESS_DIVISOR3), EXACT_DIV_SUCCESS_QUOTIENT3);
+
+                // -57 / -3
+                assert_eq_const_safe!(Option<$T>: <$T>::checked_exact_div(EXACT_DIV_SUCCESS_DIVIDEND4, EXACT_DIV_SUCCESS_DIVISOR4), Some(EXACT_DIV_SUCCESS_QUOTIENT4));
+                assert_eq_const_safe!($T: <$T>::exact_div(EXACT_DIV_SUCCESS_DIVIDEND4, EXACT_DIV_SUCCESS_DIVISOR4), EXACT_DIV_SUCCESS_QUOTIENT4);
+
+                // failures
+                assert_eq_const_safe!(Option<$T>: <$T>::checked_exact_div(1, 2), None);
+                assert_eq_const_safe!(Option<$T>: <$T>::checked_exact_div(<$T>::MIN, -1), None);
+                assert_eq_const_safe!(Option<$T>: <$T>::checked_exact_div(0, 0), None);
+            }
+        }
     };
 }
diff --git a/library/coretests/tests/num/uint_macros.rs b/library/coretests/tests/num/uint_macros.rs
index 2e35e8bf534..6f3d160964f 100644
--- a/library/coretests/tests/num/uint_macros.rs
+++ b/library/coretests/tests/num/uint_macros.rs
@@ -516,5 +516,28 @@ macro_rules! uint_module {
                 assert_eq_const_safe!($T: <$T>::unbounded_shr(17, SHIFT_AMOUNT_OVERFLOW3), 0);
             }
         }
+
+        const EXACT_DIV_SUCCESS_DIVIDEND1: $T = 42;
+        const EXACT_DIV_SUCCESS_DIVISOR1: $T = 6;
+        const EXACT_DIV_SUCCESS_QUOTIENT1: $T = 7;
+        const EXACT_DIV_SUCCESS_DIVIDEND2: $T = 18;
+        const EXACT_DIV_SUCCESS_DIVISOR2: $T = 3;
+        const EXACT_DIV_SUCCESS_QUOTIENT2: $T = 6;
+
+        test_runtime_and_compiletime! {
+            fn test_exact_div() {
+                // 42 / 6
+                assert_eq_const_safe!(Option<$T>: <$T>::checked_exact_div(EXACT_DIV_SUCCESS_DIVIDEND1, EXACT_DIV_SUCCESS_DIVISOR1), Some(EXACT_DIV_SUCCESS_QUOTIENT1));
+                assert_eq_const_safe!($T: <$T>::exact_div(EXACT_DIV_SUCCESS_DIVIDEND1, EXACT_DIV_SUCCESS_DIVISOR1), EXACT_DIV_SUCCESS_QUOTIENT1);
+
+                // 18 / 3
+                assert_eq_const_safe!(Option<$T>: <$T>::checked_exact_div(EXACT_DIV_SUCCESS_DIVIDEND2, EXACT_DIV_SUCCESS_DIVISOR2), Some(EXACT_DIV_SUCCESS_QUOTIENT2));
+                assert_eq_const_safe!($T: <$T>::exact_div(EXACT_DIV_SUCCESS_DIVIDEND2, EXACT_DIV_SUCCESS_DIVISOR2), EXACT_DIV_SUCCESS_QUOTIENT2);
+
+                // failures
+                assert_eq_const_safe!(Option<$T>: <$T>::checked_exact_div(1, 2), None);
+                assert_eq_const_safe!(Option<$T>: <$T>::checked_exact_div(0, 0), None);
+            }
+        }
     };
 }
diff --git a/library/std/src/ffi/os_str.rs b/library/std/src/ffi/os_str.rs
index b0580b467be..21d5b7292e8 100644
--- a/library/std/src/ffi/os_str.rs
+++ b/library/std/src/ffi/os_str.rs
@@ -137,7 +137,8 @@ impl OsString {
     #[stable(feature = "rust1", since = "1.0.0")]
     #[must_use]
     #[inline]
-    pub fn new() -> OsString {
+    #[rustc_const_unstable(feature = "const_pathbuf_osstring_new", issue = "141520")]
+    pub const fn new() -> OsString {
         OsString { inner: Buf::from_string(String::new()) }
     }
 
diff --git a/library/std/src/path.rs b/library/std/src/path.rs
index 050c617f564..014b56d28f4 100644
--- a/library/std/src/path.rs
+++ b/library/std/src/path.rs
@@ -1191,7 +1191,8 @@ impl PathBuf {
     #[stable(feature = "rust1", since = "1.0.0")]
     #[must_use]
     #[inline]
-    pub fn new() -> PathBuf {
+    #[rustc_const_unstable(feature = "const_pathbuf_osstring_new", issue = "141520")]
+    pub const fn new() -> PathBuf {
         PathBuf { inner: OsString::new() }
     }
 
diff --git a/library/std/src/sys/os_str/bytes.rs b/library/std/src/sys/os_str/bytes.rs
index 4a8808c9230..f8ab4543a3a 100644
--- a/library/std/src/sys/os_str/bytes.rs
+++ b/library/std/src/sys/os_str/bytes.rs
@@ -115,7 +115,7 @@ impl Buf {
     }
 
     #[inline]
-    pub fn from_string(s: String) -> Buf {
+    pub const fn from_string(s: String) -> Buf {
         Buf { inner: s.into_bytes() }
     }
 
diff --git a/library/std/src/sys/os_str/wtf8.rs b/library/std/src/sys/os_str/wtf8.rs
index 892bd2e3de6..bbc704ebf86 100644
--- a/library/std/src/sys/os_str/wtf8.rs
+++ b/library/std/src/sys/os_str/wtf8.rs
@@ -92,7 +92,7 @@ impl Buf {
     }
 
     #[inline]
-    pub fn from_string(s: String) -> Buf {
+    pub const fn from_string(s: String) -> Buf {
         Buf { inner: Wtf8Buf::from_string(s) }
     }
 
diff --git a/library/std/src/sys_common/wtf8.rs b/library/std/src/sys_common/wtf8.rs
index f9ec112b197..50bde88b5a4 100644
--- a/library/std/src/sys_common/wtf8.rs
+++ b/library/std/src/sys_common/wtf8.rs
@@ -209,7 +209,7 @@ impl Wtf8Buf {
     ///
     /// Since WTF-8 is a superset of UTF-8, this always succeeds.
     #[inline]
-    pub fn from_string(string: String) -> Wtf8Buf {
+    pub const fn from_string(string: String) -> Wtf8Buf {
         Wtf8Buf { bytes: string.into_bytes(), is_known_utf8: true }
     }
 
diff --git a/src/bootstrap/src/core/build_steps/check.rs b/src/bootstrap/src/core/build_steps/check.rs
index c8098501050..911a51b0e16 100644
--- a/src/bootstrap/src/core/build_steps/check.rs
+++ b/src/bootstrap/src/core/build_steps/check.rs
@@ -28,13 +28,16 @@ pub struct Std {
     /// passing `Builder::kind` to cargo invocations would run clippy on the entire compiler and library,
     /// which is not useful if we only want to lint a few crates with specific rules.
     override_build_kind: Option<Kind>,
+    /// Never use this from outside calls. It is intended for internal use only within `check::Std::make_run`
+    /// and `check::Std::run`.
+    custom_stage: Option<u32>,
 }
 
 impl Std {
     const CRATE_OR_DEPS: &[&str] = &["sysroot", "coretests", "alloctests"];
 
     pub fn new(target: TargetSelection) -> Self {
-        Self { target, crates: vec![], override_build_kind: None }
+        Self { target, crates: vec![], override_build_kind: None, custom_stage: None }
     }
 
     pub fn build_kind(mut self, kind: Option<Kind>) -> Self {
@@ -48,24 +51,29 @@ impl Step for Std {
     const DEFAULT: bool = true;
 
     fn should_run(run: ShouldRun<'_>) -> ShouldRun<'_> {
-        let builder = run.builder;
-        let stage = if builder.config.is_explicit_stage() || builder.top_stage >= 1 {
-            builder.top_stage
-        } else {
-            1
-        };
-
         let mut run = run;
         for c in Std::CRATE_OR_DEPS {
             run = run.crate_or_deps(c);
         }
 
-        run.path("library").default_condition(stage != 0)
+        run.path("library")
     }
 
     fn make_run(run: RunConfig<'_>) {
         let crates = std_crates_for_run_make(&run);
-        run.builder.ensure(Std { target: run.target, crates, override_build_kind: None });
+
+        let stage = if run.builder.config.is_explicit_stage() || run.builder.top_stage >= 1 {
+            run.builder.top_stage
+        } else {
+            1
+        };
+
+        run.builder.ensure(Std {
+            target: run.target,
+            crates,
+            override_build_kind: None,
+            custom_stage: Some(stage),
+        });
     }
 
     fn run(self, builder: &Builder<'_>) {
@@ -78,11 +86,7 @@ impl Step for Std {
 
         builder.require_submodule("library/stdarch", None);
 
-        let stage = if builder.config.is_explicit_stage() || builder.top_stage >= 1 {
-            builder.top_stage
-        } else {
-            1
-        };
+        let stage = self.custom_stage.unwrap_or(builder.top_stage);
 
         let target = self.target;
         let compiler = builder.compiler(stage, builder.config.build);
diff --git a/src/bootstrap/src/core/build_steps/compile.rs b/src/bootstrap/src/core/build_steps/compile.rs
index 37d53ce476a..d52b9dd1f3a 100644
--- a/src/bootstrap/src/core/build_steps/compile.rs
+++ b/src/bootstrap/src/core/build_steps/compile.rs
@@ -1878,23 +1878,27 @@ impl Step for Sysroot {
         // so that any tools relying on `rust-src` also work for local builds,
         // and also for translating the virtual `/rustc/$hash` back to the real
         // directory (for running tests with `rust.remap-debuginfo = true`).
-        let sysroot_lib_rustlib_src = sysroot.join("lib/rustlib/src");
-        t!(fs::create_dir_all(&sysroot_lib_rustlib_src));
-        let sysroot_lib_rustlib_src_rust = sysroot_lib_rustlib_src.join("rust");
-        if let Err(e) = symlink_dir(&builder.config, &builder.src, &sysroot_lib_rustlib_src_rust) {
-            eprintln!(
-                "ERROR: creating symbolic link `{}` to `{}` failed with {}",
-                sysroot_lib_rustlib_src_rust.display(),
-                builder.src.display(),
-                e,
-            );
-            if builder.config.rust_remap_debuginfo {
+        if compiler.stage != 0 {
+            let sysroot_lib_rustlib_src = sysroot.join("lib/rustlib/src");
+            t!(fs::create_dir_all(&sysroot_lib_rustlib_src));
+            let sysroot_lib_rustlib_src_rust = sysroot_lib_rustlib_src.join("rust");
+            if let Err(e) =
+                symlink_dir(&builder.config, &builder.src, &sysroot_lib_rustlib_src_rust)
+            {
                 eprintln!(
-                    "ERROR: some `tests/ui` tests will fail when lacking `{}`",
+                    "ERROR: creating symbolic link `{}` to `{}` failed with {}",
                     sysroot_lib_rustlib_src_rust.display(),
+                    builder.src.display(),
+                    e,
                 );
+                if builder.config.rust_remap_debuginfo {
+                    eprintln!(
+                        "ERROR: some `tests/ui` tests will fail when lacking `{}`",
+                        sysroot_lib_rustlib_src_rust.display(),
+                    );
+                }
+                build_helper::exit!(1);
             }
-            build_helper::exit!(1);
         }
 
         // rustc-src component is already part of CI rustc's sysroot
diff --git a/src/bootstrap/src/core/build_steps/test.rs b/src/bootstrap/src/core/build_steps/test.rs
index 22a458bac98..dddce8fe05d 100644
--- a/src/bootstrap/src/core/build_steps/test.rs
+++ b/src/bootstrap/src/core/build_steps/test.rs
@@ -2707,16 +2707,6 @@ impl Step for Crate {
                         .arg(builder.src.join("library/sysroot/Cargo.toml"));
                 } else {
                     compile::std_cargo(builder, target, compiler.stage, &mut cargo);
-                    // `std_cargo` actually does the wrong thing: it passes `--sysroot build/host/stage2`,
-                    // but we want to use the force-recompile std we just built in `build/host/stage2-test-sysroot`.
-                    // Override it.
-                    if builder.download_rustc() && compiler.stage > 0 {
-                        let sysroot = builder
-                            .out
-                            .join(compiler.host)
-                            .join(format!("stage{}-test-sysroot", compiler.stage));
-                        cargo.env("RUSTC_SYSROOT", sysroot);
-                    }
                 }
             }
             Mode::Rustc => {
diff --git a/src/bootstrap/src/core/builder/mod.rs b/src/bootstrap/src/core/builder/mod.rs
index af3e3cc37b9..19b79bfe818 100644
--- a/src/bootstrap/src/core/builder/mod.rs
+++ b/src/bootstrap/src/core/builder/mod.rs
@@ -945,7 +945,6 @@ impl<'a> Builder<'a> {
                 clippy::CI,
             ),
             Kind::Check | Kind::Fix => describe!(
-                check::Std,
                 check::Rustc,
                 check::Rustdoc,
                 check::CodegenBackend,
@@ -961,6 +960,13 @@ impl<'a> Builder<'a> {
                 check::Compiletest,
                 check::FeaturesStatusDump,
                 check::CoverageDump,
+                // This has special staging logic, it may run on stage 1 while others run on stage 0.
+                // It takes quite some time to build stage 1, so put this at the end.
+                //
+                // FIXME: This also helps bootstrap to not interfere with stage 0 builds. We should probably fix
+                // that issue somewhere else, but we still want to keep `check::Std` at the end so that the
+                // quicker steps run before this.
+                check::Std,
             ),
             Kind::Test => describe!(
                 crate::core::build_steps::toolstate::ToolStateCheck,
diff --git a/src/ci/docker/host-x86_64/dist-sparcv9-solaris/Dockerfile b/src/ci/docker/host-x86_64/dist-sparcv9-solaris/Dockerfile
new file mode 100644
index 00000000000..f7852c6364d
--- /dev/null
+++ b/src/ci/docker/host-x86_64/dist-sparcv9-solaris/Dockerfile
@@ -0,0 +1,36 @@
+FROM ubuntu:22.04
+
+COPY scripts/cross-apt-packages.sh /tmp/
+RUN bash /tmp/cross-apt-packages.sh
+
+# Required gcc dependencies.
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+    libgmp-dev \
+    libmpfr-dev \
+    libmpc-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY scripts/shared.sh /tmp/
+COPY scripts/solaris-toolchain.sh /tmp/
+
+RUN bash /tmp/solaris-toolchain.sh sparcv9 sysroot
+RUN bash /tmp/solaris-toolchain.sh sparcv9 binutils
+RUN bash /tmp/solaris-toolchain.sh sparcv9 gcc
+
+COPY scripts/sccache.sh /scripts/
+RUN sh /scripts/sccache.sh
+
+COPY scripts/cmake.sh /scripts/
+RUN /scripts/cmake.sh
+
+ENV \
+    AR_sparcv9_sun_solaris=sparcv9-solaris-ar \
+    RANLIB_sparcv9_sun_solaris=sparcv9-solaris-ranlib \
+    CC_sparcv9_sun_solaris=sparcv9-solaris-gcc \
+    CXX_sparcv9_sun_solaris=sparcv9-solaris-g++
+
+ENV HOSTS=sparcv9-sun-solaris
+
+ENV RUST_CONFIGURE_ARGS --enable-extended --disable-docs
+ENV SCRIPT python3 ../x.py dist --host $HOSTS --target $HOSTS
diff --git a/src/ci/docker/host-x86_64/dist-various-2/Dockerfile b/src/ci/docker/host-x86_64/dist-various-2/Dockerfile
index 03ec77f507e..e1d83d36087 100644
--- a/src/ci/docker/host-x86_64/dist-various-2/Dockerfile
+++ b/src/ci/docker/host-x86_64/dist-various-2/Dockerfile
@@ -43,12 +43,6 @@ ENV \
     CXX_aarch64_unknown_fuchsia=aarch64-unknown-fuchsia-clang++ \
     CXXFLAGS_aarch64_unknown_fuchsia="--target=aarch64-unknown-fuchsia --sysroot=/usr/local/core-linux-amd64-fuchsia-sdk/arch/arm64/sysroot -I/usr/local/core-linux-amd64-fuchsia-sdk/pkg/fdio/include" \
     LDFLAGS_aarch64_unknown_fuchsia="--target=aarch64-unknown-fuchsia --sysroot=/usr/local/core-linux-amd64-fuchsia-sdk/arch/arm64/sysroot -L/usr/local/core-linux-amd64-fuchsia-sdk/arch/arm64/lib" \
-    AR_sparcv9_sun_solaris=sparcv9-sun-solaris2.10-ar \
-    CC_sparcv9_sun_solaris=sparcv9-sun-solaris2.10-gcc \
-    CXX_sparcv9_sun_solaris=sparcv9-sun-solaris2.10-g++ \
-    AR_x86_64_pc_solaris=x86_64-pc-solaris2.10-ar \
-    CC_x86_64_pc_solaris=x86_64-pc-solaris2.10-gcc \
-    CXX_x86_64_pc_solaris=x86_64-pc-solaris2.10-g++ \
     CC_armv7_unknown_linux_gnueabi=arm-linux-gnueabi-gcc-9 \
     CXX_armv7_unknown_linux_gnueabi=arm-linux-gnueabi-g++-9 \
     AR_x86_64_fortanix_unknown_sgx=ar \
@@ -84,9 +78,6 @@ WORKDIR /tmp
 COPY scripts/shared.sh /tmp/
 COPY scripts/build-fuchsia-toolchain.sh /tmp/
 RUN /tmp/build-fuchsia-toolchain.sh
-COPY host-x86_64/dist-various-2/build-solaris-toolchain.sh /tmp/
-RUN /tmp/build-solaris-toolchain.sh x86_64  amd64   solaris-i386  pc
-RUN /tmp/build-solaris-toolchain.sh sparcv9 sparcv9 solaris-sparc sun
 COPY host-x86_64/dist-various-2/build-x86_64-fortanix-unknown-sgx-toolchain.sh /tmp/
 RUN /tmp/build-x86_64-fortanix-unknown-sgx-toolchain.sh
 
@@ -118,8 +109,6 @@ ENV TARGETS=$TARGETS,wasm32-wasip1
 ENV TARGETS=$TARGETS,wasm32-wasip1-threads
 ENV TARGETS=$TARGETS,wasm32-wasip2
 ENV TARGETS=$TARGETS,wasm32v1-none
-ENV TARGETS=$TARGETS,sparcv9-sun-solaris
-ENV TARGETS=$TARGETS,x86_64-pc-solaris
 ENV TARGETS=$TARGETS,x86_64-unknown-linux-gnux32
 ENV TARGETS=$TARGETS,x86_64-fortanix-unknown-sgx
 ENV TARGETS=$TARGETS,nvptx64-nvidia-cuda
diff --git a/src/ci/docker/host-x86_64/dist-various-2/build-solaris-toolchain.sh b/src/ci/docker/host-x86_64/dist-various-2/build-solaris-toolchain.sh
deleted file mode 100755
index d046b539036..00000000000
--- a/src/ci/docker/host-x86_64/dist-various-2/build-solaris-toolchain.sh
+++ /dev/null
@@ -1,111 +0,0 @@
-#!/usr/bin/env bash
-
-set -ex
-source shared.sh
-
-ARCH=$1
-LIB_ARCH=$2
-APT_ARCH=$3
-MANUFACTURER=$4
-BINUTILS=2.28.1
-GCC=6.5.0
-
-TARGET=${ARCH}-${MANUFACTURER}-solaris2.10
-
-# First up, build binutils
-mkdir binutils
-cd binutils
-
-curl https://ftp.gnu.org/gnu/binutils/binutils-$BINUTILS.tar.xz | tar xJf -
-mkdir binutils-build
-cd binutils-build
-hide_output ../binutils-$BINUTILS/configure --target=$TARGET
-hide_output make -j10
-hide_output make install
-
-cd ../..
-rm -rf binutils
-
-# Next, download and install the relevant solaris packages
-mkdir solaris
-cd solaris
-
-dpkg --add-architecture $APT_ARCH
-apt-get update
-apt-get install -y --download-only                           \
-  libc:$APT_ARCH                                             \
-  liblgrp:$APT_ARCH                                          \
-  libm-dev:$APT_ARCH                                         \
-  libpthread:$APT_ARCH                                       \
-  libresolv:$APT_ARCH                                        \
-  librt:$APT_ARCH                                            \
-  libsendfile:$APT_ARCH                                      \
-  libsocket:$APT_ARCH                                        \
-  system-crt:$APT_ARCH                                       \
-  system-header:$APT_ARCH
-
-for deb in /var/cache/apt/archives/*$APT_ARCH.deb; do
-  dpkg -x $deb .
-done
-apt-get clean
-
-# The -dev packages are not available from the apt repository we're using.
-# However, those packages are just symlinks from *.so to *.so.<version>.
-# This makes all those symlinks.
-for lib in $(find -name '*.so.*'); do
-  target=${lib%.so.*}.so
-  ln -s ${lib##*/} $target || echo "warning: silenced error symlinking $lib"
-done
-
-# Remove Solaris 11 functions that are optionally used by libbacktrace.
-# This is for Solaris 10 compatibility.
-rm usr/include/link.h
-patch -p0  << 'EOF'
---- usr/include/string.h
-+++ usr/include/string10.h
-@@ -93 +92,0 @@
--extern size_t strnlen(const char *, size_t);
-EOF
-
-mkdir                  /usr/local/$TARGET/usr
-mv usr/include         /usr/local/$TARGET/usr/include
-mv usr/lib/$LIB_ARCH/* /usr/local/$TARGET/lib
-mv     lib/$LIB_ARCH/* /usr/local/$TARGET/lib
-
-ln -s usr/include /usr/local/$TARGET/sys-include
-ln -s usr/include /usr/local/$TARGET/include
-
-cd ..
-rm -rf solaris
-
-# Finally, download and build gcc to target solaris
-mkdir gcc
-cd gcc
-
-curl https://ftp.gnu.org/gnu/gcc/gcc-$GCC/gcc-$GCC.tar.xz | tar xJf -
-cd gcc-$GCC
-
-mkdir ../gcc-build
-cd ../gcc-build
-hide_output ../gcc-$GCC/configure \
-  --enable-languages=c,c++        \
-  --target=$TARGET                \
-  --with-gnu-as                   \
-  --with-gnu-ld                   \
-  --disable-multilib              \
-  --disable-nls                   \
-  --disable-libgomp               \
-  --disable-libquadmath           \
-  --disable-libssp                \
-  --disable-libvtv                \
-  --disable-libcilkrts            \
-  --disable-libada                \
-  --disable-libsanitizer          \
-  --disable-libquadmath-support   \
-  --disable-lto
-
-hide_output make -j10
-hide_output make install
-
-cd ../..
-rm -rf gcc
diff --git a/src/ci/docker/host-x86_64/dist-x86_64-illumos/Dockerfile b/src/ci/docker/host-x86_64/dist-x86_64-illumos/Dockerfile
index 55fefd2b725..37a8dc56a5f 100644
--- a/src/ci/docker/host-x86_64/dist-x86_64-illumos/Dockerfile
+++ b/src/ci/docker/host-x86_64/dist-x86_64-illumos/Dockerfile
@@ -15,6 +15,7 @@ RUN apt-get update && \
     python2.7 \
     && rm -rf /var/lib/apt/lists/*
 
+COPY scripts/shared.sh /tmp/
 COPY scripts/illumos-toolchain.sh /tmp/
 
 RUN bash /tmp/illumos-toolchain.sh x86_64 sysroot
diff --git a/src/ci/docker/host-x86_64/dist-x86_64-solaris/Dockerfile b/src/ci/docker/host-x86_64/dist-x86_64-solaris/Dockerfile
new file mode 100644
index 00000000000..4d77f0aad26
--- /dev/null
+++ b/src/ci/docker/host-x86_64/dist-x86_64-solaris/Dockerfile
@@ -0,0 +1,36 @@
+FROM ubuntu:22.04
+
+COPY scripts/cross-apt-packages.sh /tmp/
+RUN bash /tmp/cross-apt-packages.sh
+
+# Required gcc dependencies.
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+    libgmp-dev \
+    libmpfr-dev \
+    libmpc-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY scripts/shared.sh /tmp/
+COPY scripts/solaris-toolchain.sh /tmp/
+
+RUN bash /tmp/solaris-toolchain.sh x86_64 sysroot
+RUN bash /tmp/solaris-toolchain.sh x86_64 binutils
+RUN bash /tmp/solaris-toolchain.sh x86_64 gcc
+
+COPY scripts/sccache.sh /scripts/
+RUN sh /scripts/sccache.sh
+
+COPY scripts/cmake.sh /scripts/
+RUN /scripts/cmake.sh
+
+ENV \
+    AR_x86_64_pc_solaris=x86_64-solaris-ar \
+    RANLIB_x86_64_pc_solaris=x86_64-solaris-ranlib \
+    CC_x86_64_pc_solaris=x86_64-solaris-gcc \
+    CXX_x86_64_pc_solaris=x86_64-solaris-g++
+
+ENV HOSTS=x86_64-pc-solaris
+
+ENV RUST_CONFIGURE_ARGS --enable-extended --disable-docs
+ENV SCRIPT python3 ../x.py dist --host $HOSTS --target $HOSTS
diff --git a/src/ci/docker/scripts/illumos-toolchain.sh b/src/ci/docker/scripts/illumos-toolchain.sh
index 0b2c09b3eed..7a3ca875554 100644
--- a/src/ci/docker/scripts/illumos-toolchain.sh
+++ b/src/ci/docker/scripts/illumos-toolchain.sh
@@ -4,6 +4,8 @@ set -o errexit
 set -o pipefail
 set -o xtrace
 
+source /tmp/shared.sh
+
 ARCH="$1"
 PHASE="$2"
 
@@ -59,52 +61,13 @@ BINUTILS_TAR="$BINUTILS_BASE.tar.bz2"
 BINUTILS_URL="https://ftp.gnu.org/gnu/binutils/$BINUTILS_TAR"
 
 
-download_file() {
-        local file="$1"
-        local url="$2"
-        local sum="$3"
-
-        while :; do
-                if [[ -f "$file" ]]; then
-                        if ! h="$(sha256sum "$file" | awk '{ print $1 }')"; then
-                                printf 'ERROR: reading hash\n' >&2
-                                exit 1
-                        fi
-
-                        if [[ "$h" == "$sum" ]]; then
-                                return 0
-                        fi
-
-                        printf 'WARNING: hash mismatch: %s != expected %s\n' \
-                            "$h" "$sum" >&2
-                        rm -f "$file"
-                fi
-
-                printf 'Downloading: %s\n' "$url"
-                if ! curl -f -L -o "$file" "$url"; then
-                        rm -f "$file"
-                        sleep 1
-                fi
-        done
-}
-
-
 case "$PHASE" in
 sysroot)
-        download_file "/tmp/$SYSROOT_TAR" "$SYSROOT_URL" "$SYSROOT_SUM"
-        mkdir -p "$SYSROOT_DIR"
-        cd "$SYSROOT_DIR"
-        tar -xzf "/tmp/$SYSROOT_TAR"
-        rm -f "/tmp/$SYSROOT_TAR"
+        download_tar_and_extract_into_dir "$SYSROOT_URL" "$SYSROOT_SUM" "$SYSROOT_DIR"
         ;;
 
 binutils)
-        download_file "/tmp/$BINUTILS_TAR" "$BINUTILS_URL" "$BINUTILS_SUM"
-        mkdir -p /ws/src/binutils
-        cd /ws/src/binutils
-        tar -xjf "/tmp/$BINUTILS_TAR"
-        rm -f "/tmp/$BINUTILS_TAR"
-
+        download_tar_and_extract_into_dir "$BINUTILS_URL" "$BINUTILS_SUM" /ws/src/binutils
         mkdir -p /ws/build/binutils
         cd /ws/build/binutils
         "/ws/src/binutils/$BINUTILS_BASE/configure" \
@@ -123,12 +86,7 @@ binutils)
         ;;
 
 gcc)
-        download_file "/tmp/$GCC_TAR" "$GCC_URL" "$GCC_SUM"
-        mkdir -p /ws/src/gcc
-        cd /ws/src/gcc
-        tar -xJf "/tmp/$GCC_TAR"
-        rm -f "/tmp/$GCC_TAR"
-
+        download_tar_and_extract_into_dir "$GCC_URL" "$GCC_SUM" /ws/src/gcc
         mkdir -p /ws/build/gcc
         cd /ws/build/gcc
         export CFLAGS='-fPIC'
diff --git a/src/ci/docker/scripts/shared.sh b/src/ci/docker/scripts/shared.sh
index 9969659088d..6efdbb2070d 100644
--- a/src/ci/docker/scripts/shared.sh
+++ b/src/ci/docker/scripts/shared.sh
@@ -40,3 +40,37 @@ function retry {
     }
   done
 }
+
+download_tar_and_extract_into_dir() {
+  local url="$1"
+  local sum="$2"
+  local dir="$3"
+  local file=$(mktemp -u)
+
+  while :; do
+    if [[ -f "$file" ]]; then
+      if ! h="$(sha256sum "$file" | awk '{ print $1 }')"; then
+        printf 'ERROR: reading hash\n' >&2
+        exit 1
+      fi
+
+      if [[ "$h" == "$sum" ]]; then
+        break
+      fi
+
+      printf 'WARNING: hash mismatch: %s != expected %s\n' "$h" "$sum" >&2
+      rm -f "$file"
+    fi
+
+    printf 'Downloading: %s\n' "$url"
+    if ! curl -f -L -o "$file" "$url"; then
+       rm -f "$file"
+      sleep 1
+    fi
+  done
+
+  mkdir -p "$dir"
+  cd "$dir"
+  tar -xf "$file"
+  rm -f "$file"
+}
diff --git a/src/ci/docker/scripts/solaris-toolchain.sh b/src/ci/docker/scripts/solaris-toolchain.sh
new file mode 100644
index 00000000000..82f0f105523
--- /dev/null
+++ b/src/ci/docker/scripts/solaris-toolchain.sh
@@ -0,0 +1,162 @@
+#!/bin/bash
+
+set -o errexit
+set -o pipefail
+set -o xtrace
+
+source /tmp/shared.sh
+
+ARCH="$1"
+PHASE="$2"
+
+JOBS="$(getconf _NPROCESSORS_ONLN)"
+
+case "$ARCH" in
+x86_64)
+        SYSROOT_MACH='i386'
+        ;;
+sparcv9)
+        SYSROOT_MACH='sparc'
+        ;;
+*)
+        printf 'ERROR: unknown architecture: %s\n' "$ARCH"
+        exit 1
+esac
+
+BUILD_TARGET="$ARCH-pc-solaris2.11"
+
+#
+# The illumos and the Solaris build both use the same GCC-level host triple,
+# though different versions of GCC are used and with different configuration
+# options.  To ensure as little accidental cross-pollination as possible, we
+# build the illumos toolchain in a specific directory tree and just symlink the
+# expected tools into /usr/local/bin at the end.  We omit /usr/local/bin from
+# PATH here for similar reasons.
+#
+PREFIX="/opt/solaris/$ARCH"
+export PATH="$PREFIX/bin:/usr/bin:/bin:/usr/sbin:/sbin"
+
+#
+# NOTE: The compiler version selected here is more specific than might appear.
+# GCC 7.X releases do not appear to cross-compile correctly for Solaris
+# targets, at least insofar as they refuse to enable TLS in libstdc++.  When
+# changing the GCC version in future, one must carefully verify that TLS is
+# enabled in all of the static libraries we intend to include in output
+# binaries.
+#
+GCC_VERSION='8.4.0'
+GCC_SUM='e30a6e52d10e1f27ed55104ad233c30bd1e99cfb5ff98ab022dc941edd1b2dd4'
+GCC_BASE="gcc-$GCC_VERSION"
+GCC_TAR="gcc-$GCC_VERSION.tar.xz"
+GCC_URL="https://ci-mirrors.rust-lang.org/rustc/$GCC_TAR"
+
+SYSROOT_VER='2025-02-21'
+if [ $ARCH = "x86_64" ]; then
+SYSROOT_SUM='e82b78c14464cc2dc71f3cdab312df3dd63441d7c23eeeaf34d41d8b947688d3'
+SYSROOT_TAR="solaris-11.4.42.111.0-i386-sysroot-v$SYSROOT_VER.tar.bz2"
+SYSROOT_DIR="$PREFIX/sysroot-x86_64"
+else
+SYSROOT_SUM='e249a7ef781b9b3297419bd014fa0574800703981d84e113d6af3a897a8b4ffc'
+SYSROOT_TAR="solaris-11.4.42.111.0-sparc-sysroot-v$SYSROOT_VER.tar.bz2"
+SYSROOT_DIR="$PREFIX/sysroot-sparcv9"
+fi
+SYSROOT_URL="https://ci-mirrors.rust-lang.org/rustc/$SYSROOT_TAR"
+
+BINUTILS_VERSION='2.44'
+BINUTILS_SUM='ce2017e059d63e67ddb9240e9d4ec49c2893605035cd60e92ad53177f4377237'
+BINUTILS_BASE="binutils-$BINUTILS_VERSION"
+BINUTILS_TAR="$BINUTILS_BASE.tar.xz"
+BINUTILS_URL="https://ci-mirrors.rust-lang.org/rustc/$BINUTILS_TAR"
+
+
+case "$PHASE" in
+sysroot)
+        download_tar_and_extract_into_dir "$SYSROOT_URL" "$SYSROOT_SUM" "$SYSROOT_DIR"
+        ;;
+
+binutils)
+        download_tar_and_extract_into_dir "$BINUTILS_URL" "$BINUTILS_SUM" /ws/src/binutils
+        cat > binutils.patch <<EOF
+Workaround for: https://github.com/rust-lang/rust/issues/137997
+--- binutils-2.44/bfd/elflink.c
++++ binutils-2.44/bfd/elflink.c
+@@ -5150,7 +5150,7 @@
+          if it is not a function, because it might be the version
+          symbol itself.  FIXME: What if it isn't?  */
+       if ((iver.vs_vers & VERSYM_HIDDEN) != 0
+-          || (vernum > 1
++          || (vernum > 1 && strcmp(name, "logb") != 0
+           && (!bfd_is_abs_section (sec)
+               || bed->is_function_type (ELF_ST_TYPE (isym->st_info)))))
+         {
+EOF
+        f=binutils-$BINUTILS_VERSION/bfd/elflink.c && expand -t 4 "$f" > "$f.exp"
+        mv binutils-$BINUTILS_VERSION/bfd/elflink.c.exp binutils-$BINUTILS_VERSION/bfd/elflink.c
+        patch binutils-$BINUTILS_VERSION/bfd/elflink.c < binutils.patch
+        rm binutils.patch
+
+        mkdir -p /ws/build/binutils
+        cd /ws/build/binutils
+        "/ws/src/binutils/$BINUTILS_BASE/configure" \
+            --prefix="$PREFIX" \
+            --target="$BUILD_TARGET" \
+            --program-prefix="$ARCH-solaris-" \
+            --with-sysroot="$SYSROOT_DIR"
+
+        make -j "$JOBS"
+
+        mkdir -p "$PREFIX"
+        make install
+
+        cd
+        rm -rf /ws/src/binutils /ws/build/binutils
+        ;;
+
+gcc)
+        download_tar_and_extract_into_dir "$GCC_URL" "$GCC_SUM" /ws/src/gcc
+        mkdir -p /ws/build/gcc
+        cd /ws/build/gcc
+        export CFLAGS='-fPIC'
+        export CXXFLAGS='-fPIC'
+        export CXXFLAGS_FOR_TARGET='-fPIC'
+        export CFLAGS_FOR_TARGET='-fPIC'
+        "/ws/src/gcc/$GCC_BASE/configure" \
+            --prefix="$PREFIX" \
+            --target="$BUILD_TARGET" \
+            --program-prefix="$ARCH-solaris-" \
+            --with-sysroot="$SYSROOT_DIR" \
+            --with-gnu-as \
+            --with-gnu-ld \
+            --disable-nls \
+            --disable-libgomp \
+            --disable-libquadmath \
+            --disable-libssp \
+            --disable-libvtv \
+            --disable-libcilkrts \
+            --disable-libada \
+            --disable-libsanitizer \
+            --disable-libquadmath-support \
+            --disable-shared \
+            --enable-tls
+
+        make -j "$JOBS"
+
+        mkdir -p "$PREFIX"
+        make install
+
+        #
+        # Link toolchain commands into /usr/local/bin so that cmake and others
+        # can find them:
+        #
+        (cd "$PREFIX/bin" && ls -U) | grep "^$ARCH-solaris-" |
+            xargs -t -I% ln -s "$PREFIX/bin/%" '/usr/local/bin/'
+
+        cd
+        rm -rf /ws/src/gcc /ws/build/gcc
+        ;;
+
+*)
+        printf 'ERROR: unknown phase "%s"\n' "$PHASE" >&2
+        exit 100
+        ;;
+esac
diff --git a/src/ci/github-actions/jobs.yml b/src/ci/github-actions/jobs.yml
index 543b79b2f5d..d59e440fb68 100644
--- a/src/ci/github-actions/jobs.yml
+++ b/src/ci/github-actions/jobs.yml
@@ -253,6 +253,12 @@ auto:
   - name: dist-x86_64-netbsd
     <<: *job-linux-4c
 
+  - name: dist-x86_64-solaris
+    <<: *job-linux-4c
+
+  - name: dist-sparcv9-solaris
+    <<: *job-linux-4c
+
   # The i686-gnu job is split into multiple jobs to run tests in parallel.
   # i686-gnu-1 skips tests that run in i686-gnu-2.
   - name: i686-gnu-1
diff --git a/src/doc/rustc/src/codegen-options/index.md b/src/doc/rustc/src/codegen-options/index.md
index 95e6afae8a1..bb109adf76f 100644
--- a/src/doc/rustc/src/codegen-options/index.md
+++ b/src/doc/rustc/src/codegen-options/index.md
@@ -192,7 +192,7 @@ to save information after compiling a crate to be reused when recompiling the
 crate, improving re-compile times. This takes a path to a directory where
 incremental files will be stored.
 
-Using incremental compilation inhibits certain optimizations (for example by increasing the amount of codegen units) and is therefore not recommend for release builds.
+Using incremental compilation inhibits certain optimizations (for example by increasing the amount of codegen units) and is therefore not recommended for release builds.
 
 ## inline-threshold
 
diff --git a/src/doc/rustc/src/platform-support.md b/src/doc/rustc/src/platform-support.md
index 60002a5f9e5..e7dfaaf4fd5 100644
--- a/src/doc/rustc/src/platform-support.md
+++ b/src/doc/rustc/src/platform-support.md
@@ -110,6 +110,8 @@ target | notes
 `x86_64-unknown-linux-musl` | 64-bit Linux with musl 1.2.3
 [`x86_64-unknown-linux-ohos`](platform-support/openharmony.md) | x86_64 OpenHarmony
 [`x86_64-unknown-netbsd`](platform-support/netbsd.md) | NetBSD/amd64
+[`x86_64-pc-solaris`](platform-support/solaris.md) | 64-bit x86 Solaris 11.4
+[`sparcv9-sun-solaris`](platform-support/solaris.md) | SPARC V9 Solaris 11.4
 
 ## Tier 2 without Host Tools
 
@@ -183,7 +185,6 @@ target | std | notes
 `riscv64gc-unknown-none-elf` | * | Bare RISC-V (RV64IMAFDC ISA)
 `riscv64imac-unknown-none-elf` | * | Bare RISC-V (RV64IMAC ISA)
 `sparc64-unknown-linux-gnu` | ✓ | SPARC Linux (kernel 4.4, glibc 2.23)
-[`sparcv9-sun-solaris`](platform-support/solaris.md) | ✓ | SPARC V9 Solaris 11.4
 [`thumbv6m-none-eabi`](platform-support/thumbv6m-none-eabi.md) | * | Bare Armv6-M
 [`thumbv7em-none-eabi`](platform-support/thumbv7em-none-eabi.md) | * | Bare Armv7E-M
 [`thumbv7em-none-eabihf`](platform-support/thumbv7em-none-eabi.md) | * | Bare Armv7E-M, hardfloat
@@ -203,7 +204,6 @@ target | std | notes
 [`x86_64-apple-ios-macabi`](platform-support/apple-ios-macabi.md) | ✓ | Mac Catalyst on x86_64
 [`x86_64-fortanix-unknown-sgx`](platform-support/x86_64-fortanix-unknown-sgx.md) | ✓ | [Fortanix ABI] for 64-bit Intel SGX
 [`x86_64-linux-android`](platform-support/android.md) | ✓ | 64-bit x86 Android
-[`x86_64-pc-solaris`](platform-support/solaris.md) | ✓ | 64-bit x86 Solaris 11.4
 [`x86_64-pc-windows-gnullvm`](platform-support/windows-gnullvm.md) | ✓ | 64-bit x86 MinGW (Windows 10+), LLVM ABI
 [`x86_64-unknown-fuchsia`](platform-support/fuchsia.md) | ✓ | 64-bit x86 Fuchsia
 `x86_64-unknown-linux-gnux32` | ✓ | 64-bit Linux (x32 ABI) (kernel 4.15, glibc 2.27)
diff --git a/src/doc/rustc/src/platform-support/solaris.md b/src/doc/rustc/src/platform-support/solaris.md
index c22b5c24c12..1b2372eaa0e 100644
--- a/src/doc/rustc/src/platform-support/solaris.md
+++ b/src/doc/rustc/src/platform-support/solaris.md
@@ -12,7 +12,9 @@ Rust for Solaris operating system.
 
 ## Requirements
 
-Binary built for this target is expected to run on sparcv9 or x86_64, and Solaris 11.4.
+The `sparcv9-sun-solaris` and `x86_64-pc-solaris` targets are Tier 2 with host tools.
+
+Binary built for these targets are expected to run on sparcv9 or x86_64, and Solaris 11.4.
 
 ## Testing
 
diff --git a/src/etc/htmldocck.py b/src/etc/htmldocck.py
index 06fc6518e3b..1806e2be9bb 100755
--- a/src/etc/htmldocck.py
+++ b/src/etc/htmldocck.py
@@ -2,120 +2,8 @@
 # -*- coding: utf-8 -*-
 
 r"""
-htmldocck.py is a custom checker script for Rustdoc HTML outputs.
-
-# How and why?
-
-The principle is simple: This script receives a path to generated HTML
-documentation and a "template" script, which has a series of check
-commands like `@has` or `@matches`. Each command is used to check if
-some pattern is present or not present in the particular file or in
-a particular node of the HTML tree. In many cases, the template script
-happens to be the source code given to rustdoc.
-
-While it indeed is possible to test in smaller portions, it has been
-hard to construct tests in this fashion and major rendering errors were
-discovered much later. This script is designed to make black-box and
-regression testing of Rustdoc easy. This does not preclude the needs for
-unit testing, but can be used to complement related tests by quickly
-showing the expected renderings.
-
-In order to avoid one-off dependencies for this task, this script uses
-a reasonably working HTML parser and the existing XPath implementation
-from Python's standard library. Hopefully, we won't render
-non-well-formed HTML.
-
-# Commands
-
-Commands start with an `@` followed by a command name (letters and
-hyphens), and zero or more arguments separated by one or more whitespace
-characters and optionally delimited with single or double quotes. The `@`
-mark cannot be preceded by a non-whitespace character. Other lines
-(including every text up to the first `@`) are ignored, but it is
-recommended to avoid the use of `@` in the template file.
-
-There are a number of supported commands:
-
-* `@has PATH` checks for the existence of the given file.
-
-  `PATH` is relative to the output directory. It can be given as `-`
-  which repeats the most recently used `PATH`.
-
-* `@hasraw PATH PATTERN` and `@matchesraw PATH PATTERN` checks
-  for the occurrence of the given pattern `PATTERN` in the specified file.
-  Only one occurrence of the pattern is enough.
-
-  For `@hasraw`, `PATTERN` is a whitespace-normalized (every consecutive
-  whitespace being replaced by one single space character) string.
-  The entire file is also whitespace-normalized including newlines.
-
-  For `@matchesraw`, `PATTERN` is a Python-supported regular expression.
-  The file remains intact but the regexp is matched without the `MULTILINE`
-  and `IGNORECASE` options. You can still use a prefix `(?m)` or `(?i)`
-  to override them, and `\A` and `\Z` for definitely matching
-  the beginning and end of the file.
-
-  (The same distinction goes to other variants of these commands.)
-
-* `@has PATH XPATH PATTERN` and `@matches PATH XPATH PATTERN` checks for
-  the presence of the given XPath `XPATH` in the specified HTML file,
-  and also the occurrence of the given pattern `PATTERN` in the matching
-  node or attribute. Only one occurrence of the pattern in the match
-  is enough.
-
-  `PATH` should be a valid and well-formed HTML file. It does *not*
-  accept arbitrary HTML5; it should have matching open and close tags
-  and correct entity references at least.
-
-  `XPATH` is an XPath expression to match. The XPath is fairly limited:
-  `tag`, `*`, `.`, `//`, `..`, `[@attr]`, `[@attr='value']`, `[tag]`,
-  `[POS]` (element located in given `POS`), `[last()-POS]`, `text()`
-  and `@attr` (both as the last segment) are supported. Some examples:
-
-  - `//pre` or `.//pre` matches any element with a name `pre`.
-  - `//a[@href]` matches any element with an `href` attribute.
-  - `//*[@class="impl"]//code` matches any element with a name `code`,
-    which is an ancestor of some element which `class` attr is `impl`.
-  - `//h1[@class="fqn"]/span[1]/a[last()]/@class` matches a value of
-    `class` attribute in the last `a` element (can be followed by more
-    elements that are not `a`) inside the first `span` in the `h1` with
-    a class of `fqn`. Note that there cannot be any additional elements
-    between them due to the use of `/` instead of `//`.
-
-  Do not try to use non-absolute paths, it won't work due to the flawed
-  ElementTree implementation. The script rejects them.
-
-  For the text matches (i.e. paths not ending with `@attr`), any
-  subelements are flattened into one string; this is handy for ignoring
-  highlights for example. If you want to simply check for the presence of
-  a given node or attribute, use an empty string (`""`) as a `PATTERN`.
-
-* `@count PATH XPATH COUNT` checks for the occurrence of the given XPath
-  in the specified file. The number of occurrences must match the given
-  count.
-
-* `@count PATH XPATH TEXT COUNT` checks for the occurrence of the given XPath
-  with the given text in the specified file. The number of occurrences must
-  match the given count.
-
-* `@snapshot NAME PATH XPATH` creates a snapshot test named NAME.
-  A snapshot test captures a subtree of the DOM, at the location
-  determined by the XPath, and compares it to a pre-recorded value
-  in a file. The file's name is the test's name with the `.rs` extension
-  replaced with `.NAME.html`, where NAME is the snapshot's name.
-
-  htmldocck supports the `--bless` option to accept the current subtree
-  as expected, saving it to the file determined by the snapshot's name.
-  compiletest's `--bless` flag is forwarded to htmldocck.
-
-* `@has-dir PATH` checks for the existence of the given directory.
-
-* `@files FOLDER_PATH [ENTRIES]`, checks that `FOLDER_PATH` contains exactly
-  `[ENTRIES]`.
-
-All conditions can be negated with `!`. `@!has foo/type.NoSuch.html`
-checks if the given file does not exist, for example.
-
+For documentation and usage instructions, please see
+https://rustc-dev-guide.rust-lang.org/rustdoc-internals/rustdoc-test-suite.html
 """
 
 from __future__ import absolute_import, print_function, unicode_literals
diff --git a/src/librustdoc/core.rs b/src/librustdoc/core.rs
index 9d1c9ff00b1..204f8decffc 100644
--- a/src/librustdoc/core.rs
+++ b/src/librustdoc/core.rs
@@ -345,9 +345,7 @@ pub(crate) fn run_global_ctxt(
     // (see `override_queries` in the `config`)
 
     // NOTE: These are copy/pasted from typeck/lib.rs and should be kept in sync with those changes.
-    let _ = tcx.sess.time("wf_checking", || {
-        tcx.try_par_hir_for_each_module(|module| tcx.ensure_ok().check_mod_type_wf(module))
-    });
+    let _ = tcx.sess.time("wf_checking", || tcx.ensure_ok().check_type_wf(()));
 
     tcx.dcx().abort_if_errors();
 
diff --git a/src/tools/clippy/clippy_utils/src/ast_utils/mod.rs b/src/tools/clippy/clippy_utils/src/ast_utils/mod.rs
index 6c186ab4a6f..e65914b9b5e 100644
--- a/src/tools/clippy/clippy_utils/src/ast_utils/mod.rs
+++ b/src/tools/clippy/clippy_utils/src/ast_utils/mod.rs
@@ -960,5 +960,7 @@ pub fn eq_attr_args(l: &AttrArgs, r: &AttrArgs) -> bool {
 }
 
 pub fn eq_delim_args(l: &DelimArgs, r: &DelimArgs) -> bool {
-    l.delim == r.delim && l.tokens.eq_unspanned(&r.tokens)
+    l.delim == r.delim
+        && l.tokens.len() == r.tokens.len()
+        && l.tokens.iter().zip(r.tokens.iter()).all(|(a, b)| a.eq_unspanned(b))
 }
diff --git a/src/tools/miri/src/alloc/isolated_alloc.rs b/src/tools/miri/src/alloc/isolated_alloc.rs
index 7b74d171373..3a7879f372a 100644
--- a/src/tools/miri/src/alloc/isolated_alloc.rs
+++ b/src/tools/miri/src/alloc/isolated_alloc.rs
@@ -145,10 +145,7 @@ impl IsolatedAlloc {
             if pinfo.domain_size() < offset_pinfo + size_pinfo {
                 break;
             }
-            // FIXME: is there a more efficient way to check whether the entire range is unset
-            // in the bitset?
-            let range_avail = !(offset_pinfo..offset_pinfo + size_pinfo).any(|i| pinfo.contains(i));
-            if range_avail {
+            if !pinfo.contains_any(offset_pinfo..offset_pinfo + size_pinfo) {
                 pinfo.insert_range(offset_pinfo..offset_pinfo + size_pinfo);
                 // SAFETY: We checked the available bytes after `idx` in the call
                 // to `domain_size` above and asserted there are at least `idx +
diff --git a/tests/codegen/abi-x86-sse.rs b/tests/codegen/abi-x86-sse.rs
index 837bf6134b0..90757e601af 100644
--- a/tests/codegen/abi-x86-sse.rs
+++ b/tests/codegen/abi-x86-sse.rs
@@ -27,8 +27,9 @@ trait Copy {}
 #[repr(simd)]
 pub struct Sse([f32; 4]);
 
-// x86-64: <4 x float> @sse_id(<4 x float> {{[^,]*}})
-// x86-32: <4 x float> @sse_id(<4 x float> {{[^,]*}})
+// FIXME: due to #139029 we are passing them all indirectly.
+// x86-64: void @sse_id(ptr{{( [^,]*)?}} sret([16 x i8]){{( .*)?}}, ptr{{( [^,]*)?}})
+// x86-32: void @sse_id(ptr{{( [^,]*)?}} sret([16 x i8]){{( .*)?}}, ptr{{( [^,]*)?}})
 // x86-32-nosse: void @sse_id(ptr{{( [^,]*)?}} sret([16 x i8]){{( .*)?}}, ptr{{( [^,]*)?}})
 #[no_mangle]
 pub fn sse_id(x: Sse) -> Sse {
diff --git a/tests/codegen/simd-intrinsic/simd-intrinsic-transmute-array.rs b/tests/codegen/simd-intrinsic/simd-intrinsic-transmute-array.rs
index d3853361de9..977bf3379b7 100644
--- a/tests/codegen/simd-intrinsic/simd-intrinsic-transmute-array.rs
+++ b/tests/codegen/simd-intrinsic/simd-intrinsic-transmute-array.rs
@@ -1,14 +1,8 @@
 //
 //@ compile-flags: -C no-prepopulate-passes
-// LLVM IR isn't very portable and the one tested here depends on the ABI
-// which is different between x86 (where we use SSE registers) and others.
-// `x86-64` and `x86-32-sse2` are identical, but compiletest does not support
-// taking the union of multiple `only` annotations.
-//@ revisions: x86-64 x86-32-sse2 other
-//@[x86-64] only-x86_64
-//@[x86-32-sse2] only-rustc_abi-x86-sse2
-//@[other] ignore-rustc_abi-x86-sse2
-//@[other] ignore-x86_64
+// 32bit MSVC does not align things properly so we suppress high alignment annotations (#112480)
+//@ ignore-i686-pc-windows-msvc
+//@ ignore-i686-pc-windows-gnu
 
 #![crate_type = "lib"]
 #![allow(non_camel_case_types)]
@@ -47,9 +41,7 @@ pub fn build_array_s(x: [f32; 4]) -> S<4> {
 #[no_mangle]
 pub fn build_array_transmute_s(x: [f32; 4]) -> S<4> {
     // CHECK: %[[VAL:.+]] = load <4 x float>, ptr %x, align [[ARRAY_ALIGN]]
-    // x86-32: ret <4 x float> %[[VAL:.+]]
-    // x86-64: ret <4 x float> %[[VAL:.+]]
-    // other: store <4 x float> %[[VAL:.+]], ptr %_0, align [[VECTOR_ALIGN]]
+    // CHECK: store <4 x float> %[[VAL:.+]], ptr %_0, align [[VECTOR_ALIGN]]
     unsafe { std::mem::transmute(x) }
 }
 
@@ -64,8 +56,6 @@ pub fn build_array_t(x: [f32; 4]) -> T {
 #[no_mangle]
 pub fn build_array_transmute_t(x: [f32; 4]) -> T {
     // CHECK: %[[VAL:.+]] = load <4 x float>, ptr %x, align [[ARRAY_ALIGN]]
-    // x86-32: ret <4 x float> %[[VAL:.+]]
-    // x86-64: ret <4 x float> %[[VAL:.+]]
-    // other: store <4 x float> %[[VAL:.+]], ptr %_0, align [[VECTOR_ALIGN]]
+    // CHECK: store <4 x float> %[[VAL:.+]], ptr %_0, align [[VECTOR_ALIGN]]
     unsafe { std::mem::transmute(x) }
 }
diff --git a/tests/codegen/simd/packed-simd.rs b/tests/codegen/simd/packed-simd.rs
index a27d5e3af45..73e0d29d7d6 100644
--- a/tests/codegen/simd/packed-simd.rs
+++ b/tests/codegen/simd/packed-simd.rs
@@ -30,16 +30,18 @@ fn load<T, const N: usize>(v: PackedSimd<T, N>) -> FullSimd<T, N> {
     }
 }
 
-// CHECK-LABEL: define <3 x float> @square_packed_full(ptr{{[a-z_ ]*}} align 4 {{[^,]*}})
+// CHECK-LABEL: square_packed_full
+// CHECK-SAME: ptr{{[a-z_ ]*}} sret([[RET_TYPE:[^)]+]]) [[RET_ALIGN:align (8|16)]]{{[^%]*}} [[RET_VREG:%[_0-9]*]]
+// CHECK-SAME: ptr{{[a-z_ ]*}} align 4
 #[no_mangle]
 pub fn square_packed_full(x: PackedSimd<f32, 3>) -> FullSimd<f32, 3> {
-    // The unoptimized version of this is not very interesting to check
-    // since `load` does not get inlined.
-    // opt3-NEXT: start:
-    // opt3-NEXT: load <3 x float>
+    // CHECK-NEXT: start
+    // noopt: alloca [[RET_TYPE]], [[RET_ALIGN]]
+    // CHECK: load <3 x float>
     let x = load(x);
-    // opt3-NEXT: [[VREG:%[a-z0-9_]+]] = fmul <3 x float>
-    // opt3-NEXT: ret <3 x float> [[VREG:%[a-z0-9_]+]]
+    // CHECK: [[VREG:%[a-z0-9_]+]] = fmul <3 x float>
+    // CHECK-NEXT: store <3 x float> [[VREG]], ptr [[RET_VREG]], [[RET_ALIGN]]
+    // CHECK-NEXT: ret void
     unsafe { intrinsics::simd_mul(x, x) }
 }
 
diff --git a/tests/crashes/121429.rs b/tests/crashes/121429.rs
deleted file mode 100644
index e407754db5c..00000000000
--- a/tests/crashes/121429.rs
+++ /dev/null
@@ -1,14 +0,0 @@
-//@ known-bug: #121429
-
-#![feature(generic_const_exprs)]
-
-struct FixedI8<const X: usize>;
-const FRAC_LHS: usize = 0;
-const FRAC_RHS: usize = 1;
-
-pub trait True {}
-
-impl<const N: usize = { const { 3 } }> PartialEq<FixedI8<FRAC_RHS>> for FixedI8<FRAC_LHS> where
-    If<{}>: True
-{
-}
diff --git a/tests/incremental/print-dep-node-cycle.rs b/tests/incremental/print-dep-node-cycle.rs
new file mode 100644
index 00000000000..931d3da521e
--- /dev/null
+++ b/tests/incremental/print-dep-node-cycle.rs
@@ -0,0 +1,25 @@
+//@ compile-flags: -Z query-dep-graph
+//@ revisions: rpass1
+
+// Exercises a debug-assertions-only query cycle that when printing a valtree const in
+// a dep node's debug representation, we end up invoking a query that also has a valtree
+// const in its dep node's debug representation, which leads to a cycle (and ICE, since
+// deps are not tracked when printing dep nodes' debug representations).
+
+#![feature(adt_const_params)]
+
+use std::marker::ConstParamTy;
+
+#[derive(Debug, ConstParamTy, PartialEq, Eq)]
+enum Foo {
+    A1,
+}
+
+#[inline(never)]
+fn hello<const F: Foo>() {
+    println!("{:#?}", F);
+}
+
+fn main() {
+    hello::<{ Foo::A1 }>();
+}
diff --git a/tests/ui/asm/naked-functions-ffi.rs b/tests/ui/asm/naked-functions-ffi.rs
index 565c440022d..4ba5ccc57f6 100644
--- a/tests/ui/asm/naked-functions-ffi.rs
+++ b/tests/ui/asm/naked-functions-ffi.rs
@@ -7,6 +7,5 @@ use std::arch::naked_asm;
 #[unsafe(naked)]
 pub extern "C" fn naked(p: char) -> u128 {
     //~^ WARN uses type `char`
-    //~| WARN uses type `u128`
     naked_asm!("")
 }
diff --git a/tests/ui/asm/naked-functions-ffi.stderr b/tests/ui/asm/naked-functions-ffi.stderr
index 9df6185498e..f7893a3b8de 100644
--- a/tests/ui/asm/naked-functions-ffi.stderr
+++ b/tests/ui/asm/naked-functions-ffi.stderr
@@ -8,13 +8,5 @@ LL | pub extern "C" fn naked(p: char) -> u128 {
    = note: the `char` type has no C equivalent
    = note: `#[warn(improper_ctypes_definitions)]` on by default
 
-warning: `extern` fn uses type `u128`, which is not FFI-safe
-  --> $DIR/naked-functions-ffi.rs:8:37
-   |
-LL | pub extern "C" fn naked(p: char) -> u128 {
-   |                                     ^^^^ not FFI-safe
-   |
-   = note: 128-bit integers don't currently have a known stable ABI
-
-warning: 2 warnings emitted
+warning: 1 warning emitted
 
diff --git a/tests/ui/associated-inherent-types/issue-109299-1.stderr b/tests/ui/associated-inherent-types/issue-109299-1.stderr
index 940ccd7e400..6bc7a539680 100644
--- a/tests/ui/associated-inherent-types/issue-109299-1.stderr
+++ b/tests/ui/associated-inherent-types/issue-109299-1.stderr
@@ -1,3 +1,11 @@
+error: unconstrained opaque type
+  --> $DIR/issue-109299-1.rs:10:10
+   |
+LL | type X = impl for<T> Fn() -> Lexer<T>::Cursor;
+   |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: `X` must be used in combination with a concrete type within the same crate
+
 error[E0220]: associated type `Cursor` not found for `Lexer<T>` in the current scope
   --> $DIR/issue-109299-1.rs:10:40
    |
@@ -23,14 +31,6 @@ LL | type X = impl for<T> Fn() -> Lexer<T>::Cursor;
            - `Lexer<i32>`
    = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
 
-error: unconstrained opaque type
-  --> $DIR/issue-109299-1.rs:10:10
-   |
-LL | type X = impl for<T> Fn() -> Lexer<T>::Cursor;
-   |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = note: `X` must be used in combination with a concrete type within the same crate
-
 error: aborting due to 3 previous errors
 
 For more information about this error, try `rustc --explain E0220`.
diff --git a/tests/ui/associated-type-bounds/duplicate.stderr b/tests/ui/associated-type-bounds/duplicate.stderr
index 1ce212a9ff3..68fbb345f6f 100644
--- a/tests/ui/associated-type-bounds/duplicate.stderr
+++ b/tests/ui/associated-type-bounds/duplicate.stderr
@@ -199,16 +199,6 @@ LL | fn FRPIT1() -> impl Iterator<Item: Copy, Item: Send> {
    |                              `Item` bound here first
 
 error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified
-  --> $DIR/duplicate.rs:133:42
-   |
-LL | fn FRPIT1() -> impl Iterator<Item: Copy, Item: Send> {
-   |                              ----------  ^^^^^^^^^^ re-bound here
-   |                              |
-   |                              `Item` bound here first
-   |
-   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
-
-error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified
   --> $DIR/duplicate.rs:139:42
    |
 LL | fn FRPIT2() -> impl Iterator<Item: Copy, Item: Copy> {
@@ -217,32 +207,12 @@ LL | fn FRPIT2() -> impl Iterator<Item: Copy, Item: Copy> {
    |                              `Item` bound here first
 
 error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified
-  --> $DIR/duplicate.rs:139:42
-   |
-LL | fn FRPIT2() -> impl Iterator<Item: Copy, Item: Copy> {
-   |                              ----------  ^^^^^^^^^^ re-bound here
-   |                              |
-   |                              `Item` bound here first
-   |
-   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
-
-error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified
-  --> $DIR/duplicate.rs:145:45
-   |
-LL | fn FRPIT3() -> impl Iterator<Item: 'static, Item: 'static> {
-   |                              -------------  ^^^^^^^^^^^^^ re-bound here
-   |                              |
-   |                              `Item` bound here first
-
-error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified
   --> $DIR/duplicate.rs:145:45
    |
 LL | fn FRPIT3() -> impl Iterator<Item: 'static, Item: 'static> {
    |                              -------------  ^^^^^^^^^^^^^ re-bound here
    |                              |
    |                              `Item` bound here first
-   |
-   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
 
 error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified
   --> $DIR/duplicate.rs:151:40
@@ -341,60 +311,6 @@ LL | type ETAI3<T: Iterator<Item: 'static, Item: 'static>> = impl Copy;
    |                        `Item` bound here first
 
 error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified
-  --> $DIR/duplicate.rs:189:40
-   |
-LL | type ETAI4 = impl Iterator<Item: Copy, Item: Send>;
-   |                            ----------  ^^^^^^^^^^ re-bound here
-   |                            |
-   |                            `Item` bound here first
-
-error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified
-  --> $DIR/duplicate.rs:189:40
-   |
-LL | type ETAI4 = impl Iterator<Item: Copy, Item: Send>;
-   |                            ----------  ^^^^^^^^^^ re-bound here
-   |                            |
-   |                            `Item` bound here first
-   |
-   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
-
-error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified
-  --> $DIR/duplicate.rs:193:40
-   |
-LL | type ETAI5 = impl Iterator<Item: Copy, Item: Copy>;
-   |                            ----------  ^^^^^^^^^^ re-bound here
-   |                            |
-   |                            `Item` bound here first
-
-error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified
-  --> $DIR/duplicate.rs:193:40
-   |
-LL | type ETAI5 = impl Iterator<Item: Copy, Item: Copy>;
-   |                            ----------  ^^^^^^^^^^ re-bound here
-   |                            |
-   |                            `Item` bound here first
-   |
-   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
-
-error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified
-  --> $DIR/duplicate.rs:197:43
-   |
-LL | type ETAI6 = impl Iterator<Item: 'static, Item: 'static>;
-   |                            -------------  ^^^^^^^^^^^^^ re-bound here
-   |                            |
-   |                            `Item` bound here first
-
-error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified
-  --> $DIR/duplicate.rs:197:43
-   |
-LL | type ETAI6 = impl Iterator<Item: 'static, Item: 'static>;
-   |                            -------------  ^^^^^^^^^^^^^ re-bound here
-   |                            |
-   |                            `Item` bound here first
-   |
-   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
-
-error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified
   --> $DIR/duplicate.rs:202:36
    |
 LL | trait TRI1<T: Iterator<Item: Copy, Item: Send>> {}
@@ -664,6 +580,16 @@ LL |     type A: Iterator<Item: 'static, Item: 'static>;
    |
    = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
 
+error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified
+  --> $DIR/duplicate.rs:133:42
+   |
+LL | fn FRPIT1() -> impl Iterator<Item: Copy, Item: Send> {
+   |                              ----------  ^^^^^^^^^^ re-bound here
+   |                              |
+   |                              `Item` bound here first
+   |
+   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
+
 error[E0282]: type annotations needed
   --> $DIR/duplicate.rs:136:5
    |
@@ -675,6 +601,16 @@ help: consider specifying the generic argument
 LL |     iter::empty::<T>()
    |                +++++
 
+error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified
+  --> $DIR/duplicate.rs:139:42
+   |
+LL | fn FRPIT2() -> impl Iterator<Item: Copy, Item: Copy> {
+   |                              ----------  ^^^^^^^^^^ re-bound here
+   |                              |
+   |                              `Item` bound here first
+   |
+   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
+
 error[E0282]: type annotations needed
   --> $DIR/duplicate.rs:142:5
    |
@@ -686,6 +622,16 @@ help: consider specifying the generic argument
 LL |     iter::empty::<T>()
    |                +++++
 
+error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified
+  --> $DIR/duplicate.rs:145:45
+   |
+LL | fn FRPIT3() -> impl Iterator<Item: 'static, Item: 'static> {
+   |                              -------------  ^^^^^^^^^^^^^ re-bound here
+   |                              |
+   |                              `Item` bound here first
+   |
+   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
+
 error[E0282]: type annotations needed
   --> $DIR/duplicate.rs:148:5
    |
@@ -729,6 +675,24 @@ LL | type ETAI4 = impl Iterator<Item: Copy, Item: Send>;
    |
    = note: `ETAI4` must be used in combination with a concrete type within the same crate
 
+error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified
+  --> $DIR/duplicate.rs:189:40
+   |
+LL | type ETAI4 = impl Iterator<Item: Copy, Item: Send>;
+   |                            ----------  ^^^^^^^^^^ re-bound here
+   |                            |
+   |                            `Item` bound here first
+
+error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified
+  --> $DIR/duplicate.rs:189:40
+   |
+LL | type ETAI4 = impl Iterator<Item: Copy, Item: Send>;
+   |                            ----------  ^^^^^^^^^^ re-bound here
+   |                            |
+   |                            `Item` bound here first
+   |
+   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
+
 error: unconstrained opaque type
   --> $DIR/duplicate.rs:193:14
    |
@@ -737,6 +701,24 @@ LL | type ETAI5 = impl Iterator<Item: Copy, Item: Copy>;
    |
    = note: `ETAI5` must be used in combination with a concrete type within the same crate
 
+error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified
+  --> $DIR/duplicate.rs:193:40
+   |
+LL | type ETAI5 = impl Iterator<Item: Copy, Item: Copy>;
+   |                            ----------  ^^^^^^^^^^ re-bound here
+   |                            |
+   |                            `Item` bound here first
+
+error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified
+  --> $DIR/duplicate.rs:193:40
+   |
+LL | type ETAI5 = impl Iterator<Item: Copy, Item: Copy>;
+   |                            ----------  ^^^^^^^^^^ re-bound here
+   |                            |
+   |                            `Item` bound here first
+   |
+   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
+
 error: unconstrained opaque type
   --> $DIR/duplicate.rs:197:14
    |
@@ -745,6 +727,24 @@ LL | type ETAI6 = impl Iterator<Item: 'static, Item: 'static>;
    |
    = note: `ETAI6` must be used in combination with a concrete type within the same crate
 
+error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified
+  --> $DIR/duplicate.rs:197:43
+   |
+LL | type ETAI6 = impl Iterator<Item: 'static, Item: 'static>;
+   |                            -------------  ^^^^^^^^^^^^^ re-bound here
+   |                            |
+   |                            `Item` bound here first
+
+error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified
+  --> $DIR/duplicate.rs:197:43
+   |
+LL | type ETAI6 = impl Iterator<Item: 'static, Item: 'static>;
+   |                            -------------  ^^^^^^^^^^^^^ re-bound here
+   |                            |
+   |                            `Item` bound here first
+   |
+   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
+
 error: aborting due to 87 previous errors
 
 Some errors have detailed explanations: E0282, E0719.
diff --git a/tests/crashes/140530.rs b/tests/ui/async-await/async-drop/assign-incompatible-types.rs
index 7e0372a4bd8..359939ff9ac 100644
--- a/tests/crashes/140530.rs
+++ b/tests/ui/async-await/async-drop/assign-incompatible-types.rs
@@ -1,7 +1,8 @@
-//@ known-bug: #140530
+// ex-ice: #140530
 //@ edition: 2024
-
+//@ build-pass
 #![feature(async_drop, gen_blocks)]
+#![allow(incomplete_features)]
 async gen fn a() {
   _ = async {}
 }
diff --git a/tests/ui/autoref-autoderef/autoderef-privacy.rs b/tests/ui/autoref-autoderef/autoderef-privacy.rs
index d2a217257e5..5fa28750f73 100644
--- a/tests/ui/autoref-autoderef/autoderef-privacy.rs
+++ b/tests/ui/autoref-autoderef/autoderef-privacy.rs
@@ -14,28 +14,28 @@ impl Bar2 {
 
 mod foo {
     #[derive(Default)]
-    pub struct Bar { i: ::Bar2 }
+    pub struct Bar { i: crate::Bar2 }
     #[derive(Default)]
-    pub struct Baz(::Baz2);
+    pub struct Baz(crate::Baz2);
 
     impl Bar {
         fn f(&self) -> bool { false }
     }
 
     impl ::std::ops::Deref for Bar {
-        type Target = ::Bar2;
-        fn deref(&self) -> &::Bar2 { &self.i }
+        type Target = crate::Bar2;
+        fn deref(&self) -> &crate::Bar2 { &self.i }
     }
 
     impl ::std::ops::Deref for Baz {
-        type Target = ::Baz2;
-        fn deref(&self) -> &::Baz2 { &self.0 }
+        type Target = crate::Baz2;
+        fn deref(&self) -> &crate::Baz2 { &self.0 }
     }
 
     pub fn f(bar: &Bar, baz: &Baz) {
         // Since the private fields and methods are visible here, there should be no autoderefs.
-        let _: &::Bar2 = &bar.i;
-        let _: &::Baz2 = &baz.0;
+        let _: &crate::Bar2 = &bar.i;
+        let _: &crate::Baz2 = &baz.0;
         assert!(!bar.f());
     }
 }
diff --git a/tests/ui/auxiliary/crate-method-reexport-grrrrrrr2.rs b/tests/ui/auxiliary/crate-method-reexport-grrrrrrr2.rs
index d08504005a5..06413e13526 100644
--- a/tests/ui/auxiliary/crate-method-reexport-grrrrrrr2.rs
+++ b/tests/ui/auxiliary/crate-method-reexport-grrrrrrr2.rs
@@ -16,7 +16,7 @@ pub mod name_pool {
 }
 
 pub mod rust {
-    pub use name_pool::add;
+    pub use crate::name_pool::add;
 
     pub type rt = Box<()>;
 
diff --git a/tests/ui/auxiliary/pub-and-stability.rs b/tests/ui/auxiliary/pub-and-stability.rs
index d2d07f99398..8866233b61e 100644
--- a/tests/ui/auxiliary/pub-and-stability.rs
+++ b/tests/ui/auxiliary/pub-and-stability.rs
@@ -44,7 +44,7 @@ mod m {
         #[unstable(feature = "unstable_undeclared", issue = "38412")] // SILLY
         pub(crate) b_crate: i32,
         #[unstable(feature = "unstable_declared", issue = "38412")] // SILLY
-        pub(in m) c_mod: i32,
+        pub(in crate::m) c_mod: i32,
         #[stable(feature = "unit_test", since = "1.0.0")] // SILLY
         d_priv: i32
     }
@@ -60,7 +60,7 @@ mod m {
         pub i32,
 
         pub(crate) i32,
-        pub(in m) i32,
+        pub(in crate::m) i32,
         i32);
 
     impl Record {
@@ -113,7 +113,7 @@ mod m {
         #[unstable(feature = "unstable_undeclared", issue = "38412")] // SILLY
         pub(crate) fn pub_crate(&self) -> i32 { self.d_priv }
         #[unstable(feature = "unstable_declared", issue = "38412")] // SILLY
-        pub(in m) fn pub_mod(&self) -> i32 { self.d_priv }
+        pub(in crate::m) fn pub_mod(&self) -> i32 { self.d_priv }
         #[stable(feature = "unit_test", since = "1.0.0")] // SILLY
         fn private(&self) -> i32 { self.d_priv }
     }
@@ -127,7 +127,7 @@ mod m {
         pub fn stable(&self) -> i32 { self.0 }
 
         pub(crate) fn pub_crate(&self) -> i32 { self.0 }
-        pub(in m) fn pub_mod(&self) -> i32 { self.0 }
+        pub(in crate::m) fn pub_mod(&self) -> i32 { self.0 }
         fn private(&self) -> i32 { self.0 }
     }
 }
diff --git a/tests/ui/check-cfg/target_feature.stderr b/tests/ui/check-cfg/target_feature.stderr
index eb66633f9dd..ec81ba2e3d8 100644
--- a/tests/ui/check-cfg/target_feature.stderr
+++ b/tests/ui/check-cfg/target_feature.stderr
@@ -62,6 +62,7 @@ LL |     cfg!(target_feature = "_UNEXPECTED_VALUE");
 `c`
 `cache`
 `cmpxchg16b`
+`concurrent-functions`
 `crc`
 `crt-static`
 `cssc`
@@ -159,6 +160,15 @@ LL |     cfg!(target_feature = "_UNEXPECTED_VALUE");
 `lzcnt`
 `m`
 `mclass`
+`message-security-assist-extension12`
+`message-security-assist-extension3`
+`message-security-assist-extension4`
+`message-security-assist-extension5`
+`message-security-assist-extension8`
+`message-security-assist-extension9`
+`miscellaneous-extensions-2`
+`miscellaneous-extensions-3`
+`miscellaneous-extensions-4`
 `mops`
 `movbe`
 `movrs`
@@ -287,9 +297,11 @@ LL |     cfg!(target_feature = "_UNEXPECTED_VALUE");
 `vector`
 `vector-enhancements-1`
 `vector-enhancements-2`
+`vector-enhancements-3`
 `vector-packed-decimal`
 `vector-packed-decimal-enhancement`
 `vector-packed-decimal-enhancement-2`
+`vector-packed-decimal-enhancement-3`
 `vfp2`
 `vfp3`
 `vfp4`
diff --git a/tests/ui/coherence/coherence_inherent.rs b/tests/ui/coherence/coherence_inherent.rs
index f3ebf000386..b2007e3437d 100644
--- a/tests/ui/coherence/coherence_inherent.rs
+++ b/tests/ui/coherence/coherence_inherent.rs
@@ -15,8 +15,8 @@ mod Lib {
 
 mod Import {
     // Trait is in scope here:
-    use Lib::TheStruct;
-    use Lib::TheTrait;
+    use crate::Lib::TheStruct;
+    use crate::Lib::TheTrait;
 
     fn call_the_fn(s: &TheStruct) {
         s.the_fn();
@@ -25,7 +25,7 @@ mod Import {
 
 mod NoImport {
     // Trait is not in scope here:
-    use Lib::TheStruct;
+    use crate::Lib::TheStruct;
 
     fn call_the_fn(s: &TheStruct) {
         s.the_fn();
diff --git a/tests/ui/consts/const-blocks/migrate-fail.rs b/tests/ui/consts/const-blocks/migrate-fail.rs
index fddbfbb9d32..e7dbb68d920 100644
--- a/tests/ui/consts/const-blocks/migrate-fail.rs
+++ b/tests/ui/consts/const-blocks/migrate-fail.rs
@@ -4,7 +4,7 @@
 struct Bar;
 
 mod non_constants {
-    use Bar;
+    use crate::Bar;
 
     fn no_impl_copy_empty_value_multiple_elements() {
         let x = None;
diff --git a/tests/ui/consts/const-blocks/migrate-pass.rs b/tests/ui/consts/const-blocks/migrate-pass.rs
index 308834bd646..629d4db0dc6 100644
--- a/tests/ui/consts/const-blocks/migrate-pass.rs
+++ b/tests/ui/consts/const-blocks/migrate-pass.rs
@@ -5,7 +5,7 @@
 struct Bar;
 
 mod constants {
-    use Bar;
+    use crate::Bar;
 
     fn no_impl_copy_empty_value_no_elements() {
         const FOO: Option<Bar> = None;
@@ -69,7 +69,7 @@ mod constants {
 }
 
 mod non_constants {
-    use Bar;
+    use crate::Bar;
 
     fn no_impl_copy_empty_value_no_elements() {
         let x = None;
diff --git a/tests/ui/consts/const-blocks/nll-fail.rs b/tests/ui/consts/const-blocks/nll-fail.rs
index fddbfbb9d32..e7dbb68d920 100644
--- a/tests/ui/consts/const-blocks/nll-fail.rs
+++ b/tests/ui/consts/const-blocks/nll-fail.rs
@@ -4,7 +4,7 @@
 struct Bar;
 
 mod non_constants {
-    use Bar;
+    use crate::Bar;
 
     fn no_impl_copy_empty_value_multiple_elements() {
         let x = None;
diff --git a/tests/ui/consts/const-blocks/nll-pass.rs b/tests/ui/consts/const-blocks/nll-pass.rs
index 308834bd646..629d4db0dc6 100644
--- a/tests/ui/consts/const-blocks/nll-pass.rs
+++ b/tests/ui/consts/const-blocks/nll-pass.rs
@@ -5,7 +5,7 @@
 struct Bar;
 
 mod constants {
-    use Bar;
+    use crate::Bar;
 
     fn no_impl_copy_empty_value_no_elements() {
         const FOO: Option<Bar> = None;
@@ -69,7 +69,7 @@ mod constants {
 }
 
 mod non_constants {
-    use Bar;
+    use crate::Bar;
 
     fn no_impl_copy_empty_value_no_elements() {
         let x = None;
diff --git a/tests/ui/cross-crate/auxiliary/static_priv_by_default.rs b/tests/ui/cross-crate/auxiliary/static_priv_by_default.rs
index 39f912066ec..fe9aef42feb 100644
--- a/tests/ui/cross-crate/auxiliary/static_priv_by_default.rs
+++ b/tests/ui/cross-crate/auxiliary/static_priv_by_default.rs
@@ -31,11 +31,11 @@ mod foo {
 }
 
 pub mod bar {
-    pub use foo::reexported_a as e;
-    pub use foo::reexported_b as f;
-    pub use foo::reexported_c as g;
-    pub use foo::reexported_d as h;
-    pub use foo::reexported_e as i;
+    pub use crate::foo::reexported_a as e;
+    pub use crate::foo::reexported_b as f;
+    pub use crate::foo::reexported_c as g;
+    pub use crate::foo::reexported_d as h;
+    pub use crate::foo::reexported_e as i;
 }
 
 pub static a: isize = 0;
diff --git a/tests/ui/dep-graph/dep-graph-assoc-type-codegen.rs b/tests/ui/dep-graph/dep-graph-assoc-type-codegen.rs
index 9525ff2e5ef..9a7a10529fa 100644
--- a/tests/ui/dep-graph/dep-graph-assoc-type-codegen.rs
+++ b/tests/ui/dep-graph/dep-graph-assoc-type-codegen.rs
@@ -15,7 +15,7 @@ pub trait Foo: Sized {
 }
 
 mod x {
-    use Foo;
+    use crate::Foo;
 
     #[rustc_if_this_changed]
     impl Foo for char { type T = char; }
@@ -24,7 +24,7 @@ mod x {
 }
 
 mod y {
-    use Foo;
+    use crate::Foo;
 
     #[rustc_then_this_would_need(typeck)] //~ ERROR OK
     pub fn use_char_assoc() {
diff --git a/tests/ui/dep-graph/dep-graph-caller-callee.rs b/tests/ui/dep-graph/dep-graph-caller-callee.rs
index e56cd5202e5..b1318a169d9 100644
--- a/tests/ui/dep-graph/dep-graph-caller-callee.rs
+++ b/tests/ui/dep-graph/dep-graph-caller-callee.rs
@@ -15,7 +15,7 @@ mod x {
 }
 
 mod y {
-    use x;
+    use crate::x;
 
     // These dependencies SHOULD exist:
     #[rustc_then_this_would_need(typeck)] //~ ERROR OK
@@ -25,7 +25,7 @@ mod y {
 }
 
 mod z {
-    use y;
+    use crate::y;
 
     // These are expected to yield errors, because changes to `x`
     // affect the BODY of `y`, but not its signature.
diff --git a/tests/ui/dep-graph/dep-graph-struct-signature.rs b/tests/ui/dep-graph/dep-graph-struct-signature.rs
index 5303c6d2e53..eea81b26f9f 100644
--- a/tests/ui/dep-graph/dep-graph-struct-signature.rs
+++ b/tests/ui/dep-graph/dep-graph-struct-signature.rs
@@ -23,7 +23,7 @@ struct WontChange {
 
 // these are valid dependencies
 mod signatures {
-    use WillChange;
+    use crate::WillChange;
 
     #[rustc_then_this_would_need(type_of)] //~ ERROR no path
     #[rustc_then_this_would_need(associated_item)] //~ ERROR no path
@@ -70,7 +70,7 @@ mod signatures {
 }
 
 mod invalid_signatures {
-    use WontChange;
+    use crate::WontChange;
 
     #[rustc_then_this_would_need(type_of)] //~ ERROR no path
     trait A {
diff --git a/tests/ui/dep-graph/dep-graph-trait-impl-two-traits-same-method.rs b/tests/ui/dep-graph/dep-graph-trait-impl-two-traits-same-method.rs
index b3e8e9a512e..eab4c792105 100644
--- a/tests/ui/dep-graph/dep-graph-trait-impl-two-traits-same-method.rs
+++ b/tests/ui/dep-graph/dep-graph-trait-impl-two-traits-same-method.rs
@@ -19,7 +19,7 @@ pub trait Bar: Sized {
 }
 
 mod x {
-    use {Foo, Bar};
+    use crate::{Foo, Bar};
 
     #[rustc_if_this_changed]
     impl Foo for u32 { }
@@ -28,7 +28,7 @@ mod x {
 }
 
 mod y {
-    use {Foo, Bar};
+    use crate::{Foo, Bar};
 
     #[rustc_then_this_would_need(typeck)] //~ ERROR OK
     pub fn with_char() {
@@ -37,7 +37,7 @@ mod y {
 }
 
 mod z {
-    use y;
+    use crate::y;
 
     #[rustc_then_this_would_need(typeck)] //~ ERROR no path
     pub fn z() {
diff --git a/tests/ui/dep-graph/dep-graph-trait-impl-two-traits.rs b/tests/ui/dep-graph/dep-graph-trait-impl-two-traits.rs
index 7c612158bf0..859505a4a7a 100644
--- a/tests/ui/dep-graph/dep-graph-trait-impl-two-traits.rs
+++ b/tests/ui/dep-graph/dep-graph-trait-impl-two-traits.rs
@@ -18,7 +18,7 @@ pub trait Bar: Sized {
 }
 
 mod x {
-    use {Foo, Bar};
+    use crate::{Foo, Bar};
 
     #[rustc_if_this_changed]
     impl Foo for char { }
@@ -27,7 +27,7 @@ mod x {
 }
 
 mod y {
-    use {Foo, Bar};
+    use crate::{Foo, Bar};
 
     #[rustc_then_this_would_need(typeck)] //~ ERROR no path
     pub fn call_bar() {
@@ -36,7 +36,7 @@ mod y {
 }
 
 mod z {
-    use y;
+    use crate::y;
 
     #[rustc_then_this_would_need(typeck)] //~ ERROR no path
     pub fn z() {
diff --git a/tests/ui/dep-graph/dep-graph-trait-impl.rs b/tests/ui/dep-graph/dep-graph-trait-impl.rs
index 38cc88e567d..5cf0d34e007 100644
--- a/tests/ui/dep-graph/dep-graph-trait-impl.rs
+++ b/tests/ui/dep-graph/dep-graph-trait-impl.rs
@@ -14,7 +14,7 @@ pub trait Foo: Sized {
 }
 
 mod x {
-    use Foo;
+    use crate::Foo;
 
     #[rustc_if_this_changed]
     impl Foo for char { }
@@ -23,7 +23,7 @@ mod x {
 }
 
 mod y {
-    use Foo;
+    use crate::Foo;
 
     #[rustc_then_this_would_need(typeck)] //~ ERROR OK
     pub fn with_char() {
@@ -49,7 +49,7 @@ mod y {
 }
 
 mod z {
-    use y;
+    use crate::y;
 
     // These are expected to yield errors, because changes to `x`
     // affect the BODY of `y`, but not its signature.
diff --git a/tests/ui/derived-errors/issue-31997.rs b/tests/ui/derived-errors/issue-31997.rs
index ff619313afb..59f19e4fde2 100644
--- a/tests/ui/derived-errors/issue-31997.rs
+++ b/tests/ui/derived-errors/issue-31997.rs
@@ -11,7 +11,7 @@ fn closure<F, T>(x: F) -> Result<T, ()>
 }
 
 fn foo() -> Result<(), ()> {
-    try!(closure(|| bar(core::ptr::null_mut()))); //~ ERROR cannot find function `bar` in this scope
+    closure(|| bar(core::ptr::null_mut()))?; //~ ERROR cannot find function `bar` in this scope
     Ok(())
 }
 
diff --git a/tests/ui/derived-errors/issue-31997.stderr b/tests/ui/derived-errors/issue-31997.stderr
index 7d6415fef83..f5afb94fbd6 100644
--- a/tests/ui/derived-errors/issue-31997.stderr
+++ b/tests/ui/derived-errors/issue-31997.stderr
@@ -1,8 +1,8 @@
 error[E0425]: cannot find function `bar` in this scope
-  --> $DIR/issue-31997.rs:14:21
+  --> $DIR/issue-31997.rs:14:16
    |
-LL |     try!(closure(|| bar(core::ptr::null_mut())));
-   |                     ^^^ not found in this scope
+LL |     closure(|| bar(core::ptr::null_mut()))?;
+   |                ^^^ not found in this scope
 
 error: aborting due to 1 previous error
 
diff --git a/tests/ui/drop/issue-23338-ensure-param-drop-order.rs b/tests/ui/drop/issue-23338-ensure-param-drop-order.rs
index 6fee4520cbc..54a9d3324b9 100644
--- a/tests/ui/drop/issue-23338-ensure-param-drop-order.rs
+++ b/tests/ui/drop/issue-23338-ensure-param-drop-order.rs
@@ -163,7 +163,7 @@ pub mod d {
             };
             self.log.borrow_mut().push(self.uid);
             indent_println(self.trail, &format!("+-- Drop {}", self));
-            indent_println(::PREF_INDENT, "");
+            indent_println(super::PREF_INDENT, "");
         }
     }
 }
diff --git a/tests/ui/drop/issue-23611-enum-swap-in-drop.rs b/tests/ui/drop/issue-23611-enum-swap-in-drop.rs
index 410b07b16fc..208c6e2ada3 100644
--- a/tests/ui/drop/issue-23611-enum-swap-in-drop.rs
+++ b/tests/ui/drop/issue-23611-enum-swap-in-drop.rs
@@ -256,7 +256,7 @@ pub mod d {
             };
             self.log.borrow_mut().push(self.uid);
             indent_println(self.trail, &format!("+-- Drop {}", self));
-            indent_println(::PREF_INDENT, "");
+            indent_println(super::PREF_INDENT, "");
         }
     }
 }
diff --git a/tests/ui/dropck/dropck_trait_cycle_checked.rs b/tests/ui/dropck/dropck_trait_cycle_checked.rs
index be6ec3e4ed1..ffe43480b12 100644
--- a/tests/ui/dropck/dropck_trait_cycle_checked.rs
+++ b/tests/ui/dropck/dropck_trait_cycle_checked.rs
@@ -17,7 +17,7 @@ mod s {
 }
 
 mod id {
-    use s;
+    use crate::s;
     #[derive(Debug)]
     pub struct Id {
         orig_count: usize,
diff --git a/tests/ui/error-codes/E0659.rs b/tests/ui/error-codes/E0659.rs
index c00026bb7a7..d056f1d96dd 100644
--- a/tests/ui/error-codes/E0659.rs
+++ b/tests/ui/error-codes/E0659.rs
@@ -7,8 +7,8 @@ mod earth {
 }
 
 mod collider {
-    pub use moon::*;
-    pub use earth::*;
+    pub use crate::moon::*;
+    pub use crate::earth::*;
 }
 
 fn main() {
diff --git a/tests/ui/error-codes/E0659.stderr b/tests/ui/error-codes/E0659.stderr
index dbb72bb6759..371250b811b 100644
--- a/tests/ui/error-codes/E0659.stderr
+++ b/tests/ui/error-codes/E0659.stderr
@@ -8,14 +8,14 @@ LL |     collider::foo();
 note: `foo` could refer to the function imported here
   --> $DIR/E0659.rs:10:13
    |
-LL |     pub use moon::*;
-   |             ^^^^^^^
+LL |     pub use crate::moon::*;
+   |             ^^^^^^^^^^^^^^
    = help: consider adding an explicit import of `foo` to disambiguate
 note: `foo` could also refer to the function imported here
   --> $DIR/E0659.rs:11:13
    |
-LL |     pub use earth::*;
-   |             ^^^^^^^^
+LL |     pub use crate::earth::*;
+   |             ^^^^^^^^^^^^^^^
    = help: consider adding an explicit import of `foo` to disambiguate
 
 error: aborting due to 1 previous error
diff --git a/tests/ui/explore-issue-38412.stderr b/tests/ui/explore-issue-38412.stderr
index 884184ec16e..fca5c738d27 100644
--- a/tests/ui/explore-issue-38412.stderr
+++ b/tests/ui/explore-issue-38412.stderr
@@ -103,8 +103,8 @@ LL |     r.pub_mod();
    |
   ::: $DIR/auxiliary/pub-and-stability.rs:116:9
    |
-LL |         pub(in m) fn pub_mod(&self) -> i32 { self.d_priv }
-   |         ---------------------------------- private method defined here
+LL |         pub(in crate::m) fn pub_mod(&self) -> i32 { self.d_priv }
+   |         ----------------------------------------- private method defined here
 
 error[E0624]: method `private` is private
   --> $DIR/explore-issue-38412.rs:50:7
@@ -156,8 +156,8 @@ LL |     t.pub_mod();
    |
   ::: $DIR/auxiliary/pub-and-stability.rs:130:9
    |
-LL |         pub(in m) fn pub_mod(&self) -> i32 { self.0 }
-   |         ---------------------------------- private method defined here
+LL |         pub(in crate::m) fn pub_mod(&self) -> i32 { self.0 }
+   |         ----------------------------------------- private method defined here
 
 error[E0624]: method `private` is private
   --> $DIR/explore-issue-38412.rs:63:7
diff --git a/tests/ui/impl-trait/in-assoc-type-unconstrained.stderr b/tests/ui/impl-trait/in-assoc-type-unconstrained.stderr
index c9e657b87d5..2f417d57752 100644
--- a/tests/ui/impl-trait/in-assoc-type-unconstrained.stderr
+++ b/tests/ui/impl-trait/in-assoc-type-unconstrained.stderr
@@ -12,14 +12,6 @@ note: required by a bound in `compare_ty::Trait::Ty`
 LL |         type Ty: IntoIterator<Item = ()>;
    |                               ^^^^^^^^^ required by this bound in `Trait::Ty`
 
-error: unconstrained opaque type
-  --> $DIR/in-assoc-type-unconstrained.rs:8:26
-   |
-LL |         type Ty = Option<impl Sized>;
-   |                          ^^^^^^^^^^
-   |
-   = note: `Ty` must be used in combination with a concrete type within the same impl
-
 error[E0053]: method `method` has an incompatible type for trait
   --> $DIR/in-assoc-type-unconstrained.rs:22:24
    |
@@ -43,6 +35,14 @@ LL +         fn method() -> <() as compare_method::Trait>::Ty {}
    |
 
 error: unconstrained opaque type
+  --> $DIR/in-assoc-type-unconstrained.rs:8:26
+   |
+LL |         type Ty = Option<impl Sized>;
+   |                          ^^^^^^^^^^
+   |
+   = note: `Ty` must be used in combination with a concrete type within the same impl
+
+error: unconstrained opaque type
   --> $DIR/in-assoc-type-unconstrained.rs:20:19
    |
 LL |         type Ty = impl Sized;
diff --git a/tests/ui/impl-trait/recursive-type-alias-impl-trait-declaration-too-subtle.stderr b/tests/ui/impl-trait/recursive-type-alias-impl-trait-declaration-too-subtle.stderr
index 7f642fa1bed..ce6f68f535b 100644
--- a/tests/ui/impl-trait/recursive-type-alias-impl-trait-declaration-too-subtle.stderr
+++ b/tests/ui/impl-trait/recursive-type-alias-impl-trait-declaration-too-subtle.stderr
@@ -15,19 +15,6 @@ LL -         fn eq(&self, _other: &(Foo, i32)) -> bool {
 LL +         fn eq(&self, _other: &(a::Bar, i32)) -> bool {
    |
 
-error: item does not constrain `a::Foo::{opaque#0}`
-  --> $DIR/recursive-type-alias-impl-trait-declaration-too-subtle.rs:10:12
-   |
-LL |         fn eq(&self, _other: &(Foo, i32)) -> bool {
-   |            ^^
-   |
-   = note: consider removing `#[define_opaque]` or adding an empty `#[define_opaque()]`
-note: this opaque type is supposed to be constrained
-  --> $DIR/recursive-type-alias-impl-trait-declaration-too-subtle.rs:4:16
-   |
-LL |     type Foo = impl PartialEq<(Foo, i32)>;
-   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^
-
 error[E0053]: method `eq` has an incompatible type for trait
   --> $DIR/recursive-type-alias-impl-trait-declaration-too-subtle.rs:25:30
    |
@@ -50,6 +37,19 @@ LL -         fn eq(&self, _other: &(Bar, i32)) -> bool {
 LL +         fn eq(&self, _other: &(b::Foo, i32)) -> bool {
    |
 
+error: item does not constrain `a::Foo::{opaque#0}`
+  --> $DIR/recursive-type-alias-impl-trait-declaration-too-subtle.rs:10:12
+   |
+LL |         fn eq(&self, _other: &(Foo, i32)) -> bool {
+   |            ^^
+   |
+   = note: consider removing `#[define_opaque]` or adding an empty `#[define_opaque()]`
+note: this opaque type is supposed to be constrained
+  --> $DIR/recursive-type-alias-impl-trait-declaration-too-subtle.rs:4:16
+   |
+LL |     type Foo = impl PartialEq<(Foo, i32)>;
+   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^
+
 error: unconstrained opaque type
   --> $DIR/recursive-type-alias-impl-trait-declaration-too-subtle.rs:19:16
    |
diff --git a/tests/ui/imports/duplicate.rs b/tests/ui/imports/duplicate.rs
index 0c5a376da38..69ec82aafbd 100644
--- a/tests/ui/imports/duplicate.rs
+++ b/tests/ui/imports/duplicate.rs
@@ -7,27 +7,27 @@ mod b {
 }
 
 mod c {
-    pub use a::foo;
+    pub use crate::a::foo;
 }
 
 mod d {
-    use a::foo;
-    use a::foo; //~ ERROR the name `foo` is defined multiple times
+    use crate::a::foo;
+    use crate::a::foo; //~ ERROR the name `foo` is defined multiple times
 }
 
 mod e {
-    pub use a::*;
-    pub use c::*; // ok
+    pub use crate::a::*;
+    pub use crate::c::*; // ok
 }
 
 mod f {
-    pub use a::*;
-    pub use b::*;
+    pub use crate::a::*;
+    pub use crate::b::*;
 }
 
 mod g {
-    pub use a::*;
-    pub use f::*;
+    pub use crate::a::*;
+    pub use crate::f::*;
 }
 
 fn main() {
diff --git a/tests/ui/imports/duplicate.stderr b/tests/ui/imports/duplicate.stderr
index d7a7dfce921..f7dc7312b9d 100644
--- a/tests/ui/imports/duplicate.stderr
+++ b/tests/ui/imports/duplicate.stderr
@@ -1,10 +1,10 @@
 error[E0252]: the name `foo` is defined multiple times
   --> $DIR/duplicate.rs:15:9
    |
-LL |     use a::foo;
-   |         ------ previous import of the value `foo` here
-LL |     use a::foo;
-   |         ^^^^^^ `foo` reimported here
+LL |     use crate::a::foo;
+   |         ------------- previous import of the value `foo` here
+LL |     use crate::a::foo;
+   |         ^^^^^^^^^^^^^ `foo` reimported here
    |
    = note: `foo` must be defined only once in the value namespace of this module
 
@@ -38,14 +38,14 @@ LL |     f::foo();
 note: `foo` could refer to the function imported here
   --> $DIR/duplicate.rs:24:13
    |
-LL |     pub use a::*;
-   |             ^^^^
+LL |     pub use crate::a::*;
+   |             ^^^^^^^^^^^
    = help: consider adding an explicit import of `foo` to disambiguate
 note: `foo` could also refer to the function imported here
   --> $DIR/duplicate.rs:25:13
    |
-LL |     pub use b::*;
-   |             ^^^^
+LL |     pub use crate::b::*;
+   |             ^^^^^^^^^^^
    = help: consider adding an explicit import of `foo` to disambiguate
 
 error[E0659]: `foo` is ambiguous
@@ -80,14 +80,14 @@ LL |     g::foo();
 note: `foo` could refer to the function imported here
   --> $DIR/duplicate.rs:24:13
    |
-LL |     pub use a::*;
-   |             ^^^^
+LL |     pub use crate::a::*;
+   |             ^^^^^^^^^^^
    = help: consider adding an explicit import of `foo` to disambiguate
 note: `foo` could also refer to the function imported here
   --> $DIR/duplicate.rs:25:13
    |
-LL |     pub use b::*;
-   |             ^^^^
+LL |     pub use crate::b::*;
+   |             ^^^^^^^^^^^
    = help: consider adding an explicit import of `foo` to disambiguate
    = note: `#[warn(ambiguous_glob_imports)]` on by default
 
diff --git a/tests/ui/imports/export-glob-imports-target.rs b/tests/ui/imports/export-glob-imports-target.rs
index 6fde9fef0b6..84b9ffa83ff 100644
--- a/tests/ui/imports/export-glob-imports-target.rs
+++ b/tests/ui/imports/export-glob-imports-target.rs
@@ -9,7 +9,7 @@
 
 
 mod foo {
-    use foo::bar::*;
+    use crate::foo::bar::*;
     pub mod bar {
         pub static a : isize = 10;
     }
diff --git a/tests/ui/imports/glob-cycles.rs b/tests/ui/imports/glob-cycles.rs
index 066aa3b53ea..d9850bec4ca 100644
--- a/tests/ui/imports/glob-cycles.rs
+++ b/tests/ui/imports/glob-cycles.rs
@@ -1,12 +1,12 @@
 //@ check-pass
 
 mod foo {
-    pub use bar::*;
-    pub use main as f;
+    pub use crate::bar::*;
+    pub use crate::main as f;
 }
 
 mod bar {
-    pub use foo::*;
+    pub use crate::foo::*;
 }
 
 pub use foo::*;
diff --git a/tests/ui/imports/glob-shadowing.rs b/tests/ui/imports/glob-shadowing.rs
index 3a33b592b00..72848aac511 100644
--- a/tests/ui/imports/glob-shadowing.rs
+++ b/tests/ui/imports/glob-shadowing.rs
@@ -6,7 +6,7 @@ mod m {
 }
 
 mod glob_in_normal_module {
-    use m::*;
+    use crate::m::*;
     fn check() {
         let x = env!("PATH"); //~ ERROR `env` is ambiguous
     }
@@ -14,7 +14,7 @@ mod glob_in_normal_module {
 
 mod glob_in_block_module {
     fn block() {
-        use m::*;
+        use crate::m::*;
         fn check() {
             let x = env!("PATH"); //~ ERROR `env` is ambiguous
         }
@@ -24,7 +24,7 @@ mod glob_in_block_module {
 mod glob_shadows_item {
     pub macro fenv($e: expr) { $e }
     fn block() {
-        use m::*;
+        use crate::m::*;
         fn check() {
             let x = fenv!(); //~ ERROR `fenv` is ambiguous
         }
diff --git a/tests/ui/imports/glob-shadowing.stderr b/tests/ui/imports/glob-shadowing.stderr
index aff2eff68ac..0ce8d4f54f8 100644
--- a/tests/ui/imports/glob-shadowing.stderr
+++ b/tests/ui/imports/glob-shadowing.stderr
@@ -9,8 +9,8 @@ LL |         let x = env!("PATH");
 note: `env` could also refer to the macro imported here
   --> $DIR/glob-shadowing.rs:9:9
    |
-LL |     use m::*;
-   |         ^^^^
+LL |     use crate::m::*;
+   |         ^^^^^^^^^^^
    = help: consider adding an explicit import of `env` to disambiguate
    = help: or use `self::env` to refer to this macro unambiguously
 
@@ -25,8 +25,8 @@ LL |             let x = env!("PATH");
 note: `env` could also refer to the macro imported here
   --> $DIR/glob-shadowing.rs:17:13
    |
-LL |         use m::*;
-   |             ^^^^
+LL |         use crate::m::*;
+   |             ^^^^^^^^^^^
    = help: consider adding an explicit import of `env` to disambiguate
 
 error[E0659]: `fenv` is ambiguous
@@ -39,8 +39,8 @@ LL |             let x = fenv!();
 note: `fenv` could refer to the macro imported here
   --> $DIR/glob-shadowing.rs:27:13
    |
-LL |         use m::*;
-   |             ^^^^
+LL |         use crate::m::*;
+   |             ^^^^^^^^^^^
    = help: consider adding an explicit import of `fenv` to disambiguate
 note: `fenv` could also refer to the macro defined here
   --> $DIR/glob-shadowing.rs:25:5
diff --git a/tests/ui/imports/import-glob-1.rs b/tests/ui/imports/import-glob-1.rs
index 510f3814567..8beec4ce469 100644
--- a/tests/ui/imports/import-glob-1.rs
+++ b/tests/ui/imports/import-glob-1.rs
@@ -21,7 +21,7 @@ mod bar {
 }
 
 mod foo {
-    use bar::Baz::{Baz1, Baz2};
+    use crate::bar::Baz::{Baz1, Baz2};
 }
 
 fn main() {}
diff --git a/tests/ui/imports/import-glob-circular.rs b/tests/ui/imports/import-glob-circular.rs
index e47fa870c06..2dcfc7721fa 100644
--- a/tests/ui/imports/import-glob-circular.rs
+++ b/tests/ui/imports/import-glob-circular.rs
@@ -1,17 +1,17 @@
 mod circ1 {
-    pub use circ2::f2;
+    pub use crate::circ2::f2;
     pub fn f1() { println!("f1"); }
     pub fn common() -> usize { return 0; }
 }
 
 mod circ2 {
-    pub use circ1::f1;
+    pub use crate::circ1::f1;
     pub fn f2() { println!("f2"); }
     pub fn common() -> usize { return 1; }
 }
 
 mod test {
-    use circ1::*;
+    use crate::circ1::*;
 
     fn test() { f1066(); } //~ ERROR cannot find function `f1066` in this scope
 }
diff --git a/tests/ui/imports/import-loop-2.rs b/tests/ui/imports/import-loop-2.rs
index 1bd0f06c671..42f9a07fff3 100644
--- a/tests/ui/imports/import-loop-2.rs
+++ b/tests/ui/imports/import-loop-2.rs
@@ -1,9 +1,9 @@
 mod a {
-    pub use b::x;
+    pub use crate::b::x;
 }
 
 mod b {
-    pub use a::x; //~ ERROR unresolved import `a::x`
+    pub use crate::a::x; //~ ERROR unresolved import `crate::a::x`
 
     fn main() { let y = x; }
 }
diff --git a/tests/ui/imports/import-loop-2.stderr b/tests/ui/imports/import-loop-2.stderr
index 2521b6e7c04..2ef40c4e218 100644
--- a/tests/ui/imports/import-loop-2.stderr
+++ b/tests/ui/imports/import-loop-2.stderr
@@ -1,8 +1,8 @@
-error[E0432]: unresolved import `a::x`
+error[E0432]: unresolved import `crate::a::x`
   --> $DIR/import-loop-2.rs:6:13
    |
-LL |     pub use a::x;
-   |             ^^^^ no `x` in `a`
+LL |     pub use crate::a::x;
+   |             ^^^^^^^^^^^ no `x` in `a`
 
 error: aborting due to 1 previous error
 
diff --git a/tests/ui/imports/import-loop.rs b/tests/ui/imports/import-loop.rs
index fc5bd32adee..92483770711 100644
--- a/tests/ui/imports/import-loop.rs
+++ b/tests/ui/imports/import-loop.rs
@@ -1,7 +1,7 @@
 use y::x;
 
 mod y {
-    pub use y::x; //~ ERROR unresolved import `y::x`
+    pub use crate::y::x; //~ ERROR unresolved import `crate::y::x`
 }
 
 fn main() { }
diff --git a/tests/ui/imports/import-loop.stderr b/tests/ui/imports/import-loop.stderr
index 801fc2552b6..888ca11293c 100644
--- a/tests/ui/imports/import-loop.stderr
+++ b/tests/ui/imports/import-loop.stderr
@@ -1,8 +1,8 @@
-error[E0432]: unresolved import `y::x`
+error[E0432]: unresolved import `crate::y::x`
   --> $DIR/import-loop.rs:4:13
    |
-LL |     pub use y::x;
-   |             ^^^^ no `x` in `y`
+LL |     pub use crate::y::x;
+   |             ^^^^^^^^^^^ no `x` in `y`
 
 error: aborting due to 1 previous error
 
diff --git a/tests/ui/imports/import-rpass.rs b/tests/ui/imports/import-rpass.rs
index 97c64fd9c63..f03f974d573 100644
--- a/tests/ui/imports/import-rpass.rs
+++ b/tests/ui/imports/import-rpass.rs
@@ -4,8 +4,8 @@ mod foo {
 }
 
 mod bar {
-    use foo::x;
-    use foo::x as z;
+    use crate::foo::x;
+    use crate::foo::x as z;
     pub fn thing() { x(10); z(10); }
 }
 
diff --git a/tests/ui/imports/import4.rs b/tests/ui/imports/import4.rs
index 01535fc6f45..f670cc06201 100644
--- a/tests/ui/imports/import4.rs
+++ b/tests/ui/imports/import4.rs
@@ -1,4 +1,4 @@
-mod a { pub use b::foo; }
-mod b { pub use a::foo; } //~ ERROR unresolved import `a::foo`
+mod a { pub use crate::b::foo; }
+mod b { pub use crate::a::foo; } //~ ERROR unresolved import `crate::a::foo`
 
 fn main() { println!("loop"); }
diff --git a/tests/ui/imports/import4.stderr b/tests/ui/imports/import4.stderr
index c979d6c9ae2..4faa5f0520a 100644
--- a/tests/ui/imports/import4.stderr
+++ b/tests/ui/imports/import4.stderr
@@ -1,8 +1,8 @@
-error[E0432]: unresolved import `a::foo`
+error[E0432]: unresolved import `crate::a::foo`
   --> $DIR/import4.rs:2:17
    |
-LL | mod b { pub use a::foo; }
-   |                 ^^^^^^ no `foo` in `a`
+LL | mod b { pub use crate::a::foo; }
+   |                 ^^^^^^^^^^^^^ no `foo` in `a`
 
 error: aborting due to 1 previous error
 
diff --git a/tests/ui/imports/import5.rs b/tests/ui/imports/import5.rs
index 96d6c62d48a..7c7d99d7175 100644
--- a/tests/ui/imports/import5.rs
+++ b/tests/ui/imports/import5.rs
@@ -1,7 +1,7 @@
 //@ run-pass
 use foo::bar;
 mod foo {
-    pub use foo::zed::bar;
+    pub use crate::foo::zed::bar;
     pub mod zed {
         pub fn bar() { println!("foo"); }
     }
diff --git a/tests/ui/imports/import6.rs b/tests/ui/imports/import6.rs
index 8632c21e5f7..1677003c0ec 100644
--- a/tests/ui/imports/import6.rs
+++ b/tests/ui/imports/import6.rs
@@ -10,6 +10,6 @@ mod foo {
     }
 }
 mod bar {
-    pub use foo::zed::baz;
+    pub use crate::foo::zed::baz;
 }
 pub fn main() { baz(); }
diff --git a/tests/ui/imports/imports.rs b/tests/ui/imports/imports.rs
index a770103c212..b5c25eb0447 100644
--- a/tests/ui/imports/imports.rs
+++ b/tests/ui/imports/imports.rs
@@ -3,7 +3,7 @@
 
 // Like other items, private imports can be imported and used non-lexically in paths.
 mod a {
-    use a as foo;
+    use crate::a as foo;
     use self::foo::foo as bar;
 
     mod b {
@@ -18,22 +18,22 @@ pub fn f() -> bool { true }
 
 // Items and explicit imports shadow globs.
 fn g() {
-    use foo::*;
-    use bar::*;
+    use crate::foo::*;
+    use crate::bar::*;
     fn f() -> bool { true }
     let _: bool = f();
 }
 
 fn h() {
-    use foo::*;
-    use bar::*;
-    use f;
+    use crate::foo::*;
+    use crate::bar::*;
+    use crate::f;
     let _: bool = f();
 }
 
 // Here, there appears to be shadowing but isn't because of namespaces.
 mod b {
-    use foo::*; // This imports `f` in the value namespace.
+    use crate::foo::*; // This imports `f` in the value namespace.
     use super::b as f; // This imports `f` only in the type namespace,
     fn test() { self::f(); } // so the glob isn't shadowed.
 }
@@ -55,12 +55,13 @@ mod c {
 
 // Unused names can be ambiguous.
 mod d {
-    pub use foo::*; // This imports `f` in the value namespace.
-    pub use bar::*; // This also imports `f` in the value namespace.
+    pub use crate::foo::*; // This imports `f` in the value namespace.
+    pub use crate::bar::*; // This also imports `f` in the value namespace.
 }
 
 mod e {
-    pub use d::*; // n.b. Since `e::f` is not used, this is not considered to be a use of `d::f`.
+    pub use crate::d::*; // n.b. Since `e::f` is not used,
+                         // this is not considered to be a use of `d::f`.
 }
 
 fn main() {}
diff --git a/tests/ui/imports/issue-18083.rs b/tests/ui/imports/issue-18083.rs
index 97c0bc83ad5..c111c9b5aa8 100644
--- a/tests/ui/imports/issue-18083.rs
+++ b/tests/ui/imports/issue-18083.rs
@@ -5,7 +5,7 @@
 // each other and be reported as unresolved.
 
 mod a {
-    use b::{B};
+    use crate::b::{B};
     pub use self::inner::A;
 
     mod inner {
@@ -14,7 +14,7 @@ mod a {
 }
 
 mod b {
-    use a::{A};
+    use crate::a::{A};
     pub use self::inner::B;
 
     mod inner {
diff --git a/tests/ui/imports/issue-19498.rs b/tests/ui/imports/issue-19498.rs
index 5b9ce85fd8b..ae4e5fd35e5 100644
--- a/tests/ui/imports/issue-19498.rs
+++ b/tests/ui/imports/issue-19498.rs
@@ -7,7 +7,7 @@ mod A {} //~ ERROR the name `A` is defined multiple times
 pub mod B {} //~ ERROR the name `B` is defined multiple times
 //~| NOTE `B` redefined here
 mod C {
-    use C::D;
+    use crate::C::D;
     mod D {} //~ ERROR the name `D` is defined multiple times
     //~| NOTE `D` redefined here
 }
diff --git a/tests/ui/imports/issue-19498.stderr b/tests/ui/imports/issue-19498.stderr
index eb0d68a24c9..a4ddff3ed99 100644
--- a/tests/ui/imports/issue-19498.stderr
+++ b/tests/ui/imports/issue-19498.stderr
@@ -31,16 +31,16 @@ LL | use self::B as OtherB;
 error[E0255]: the name `D` is defined multiple times
   --> $DIR/issue-19498.rs:11:5
    |
-LL |     use C::D;
-   |         ---- previous import of the module `D` here
+LL |     use crate::C::D;
+   |         ----------- previous import of the module `D` here
 LL |     mod D {}
    |     ^^^^^ `D` redefined here
    |
    = note: `D` must be defined only once in the type namespace of this module
 help: you can use `as` to change the binding name of the import
    |
-LL |     use C::D as OtherD;
-   |              +++++++++
+LL |     use crate::C::D as OtherD;
+   |                     +++++++++
 
 error: aborting due to 3 previous errors
 
diff --git a/tests/ui/imports/issue-32222.rs b/tests/ui/imports/issue-32222.rs
index 8c528bc0a1e..6f5530a065c 100644
--- a/tests/ui/imports/issue-32222.rs
+++ b/tests/ui/imports/issue-32222.rs
@@ -16,7 +16,7 @@ mod a {
 }
 
 mod b {
-    pub use a::bar;
+    pub use crate::a::bar;
 }
 
 fn main() {}
diff --git a/tests/ui/imports/issue-4366-2.rs b/tests/ui/imports/issue-4366-2.rs
index c777b750252..e92d964f889 100644
--- a/tests/ui/imports/issue-4366-2.rs
+++ b/tests/ui/imports/issue-4366-2.rs
@@ -7,11 +7,11 @@ mod foo {
 }
 mod a {
     pub mod b {
-        use foo::foo;
+        use crate::foo::foo;
         type Bar = isize;
     }
     pub mod sub {
-        use a::b::*;
+        use crate::a::b::*;
         fn sub() -> Bar { 1 }
         //~^ ERROR cannot find type `Bar` in this scope
     }
diff --git a/tests/ui/imports/issue-4366.rs b/tests/ui/imports/issue-4366.rs
index 9ec2e58ecad..e2d89fdaff3 100644
--- a/tests/ui/imports/issue-4366.rs
+++ b/tests/ui/imports/issue-4366.rs
@@ -10,11 +10,11 @@ mod foo {
 }
 mod a {
     pub mod b {
-        use foo::foo;
+        use crate::foo::foo;
         type Bar = isize;
     }
     pub mod sub {
-        use a::b::*;
+        use crate::a::b::*;
         fn sub() -> isize { foo(); 1 } //~ ERROR cannot find function `foo` in this scope
     }
 }
diff --git a/tests/ui/imports/issue-4865-1.rs b/tests/ui/imports/issue-4865-1.rs
index 1a72b1b5e3f..7c34d105550 100644
--- a/tests/ui/imports/issue-4865-1.rs
+++ b/tests/ui/imports/issue-4865-1.rs
@@ -6,16 +6,16 @@
 // because these previous imports were not resolved.
 
 pub mod a {
-    use b::fn_b;
-    use c::*;
+    use crate::b::fn_b;
+    use crate::c::*;
 
     pub fn fn_a(){
     }
 }
 
 pub mod b {
-    use a::fn_a;
-    use c::*;
+    use crate::a::fn_a;
+    use crate::c::*;
 
     pub fn fn_b(){
     }
diff --git a/tests/ui/imports/issue-4865-2.rs b/tests/ui/imports/issue-4865-2.rs
index 746a74658dd..60ce2a468d9 100644
--- a/tests/ui/imports/issue-4865-2.rs
+++ b/tests/ui/imports/issue-4865-2.rs
@@ -12,7 +12,7 @@ pub mod say {
 }
 
 pub mod hello {
-    use say;
+    use crate::say;
 
     pub fn hello() {
         say::hello();
diff --git a/tests/ui/imports/issue-4865-3.rs b/tests/ui/imports/issue-4865-3.rs
index 130223558cb..d9d17f4dd47 100644
--- a/tests/ui/imports/issue-4865-3.rs
+++ b/tests/ui/imports/issue-4865-3.rs
@@ -4,11 +4,11 @@
 // they are not `pub`.
 
 pub mod a {
-    use b::*;
+    use crate::b::*;
 }
 
 pub mod b {
-    use a::*;
+    use crate::a::*;
 }
 
 use a::*;
diff --git a/tests/ui/imports/issue-8208.rs b/tests/ui/imports/issue-8208.rs
index 997d4d227b3..f6d88f830f2 100644
--- a/tests/ui/imports/issue-8208.rs
+++ b/tests/ui/imports/issue-8208.rs
@@ -2,7 +2,7 @@ use self::*; //~ ERROR: unresolved import `self::*` [E0432]
              //~^ NOTE cannot glob-import a module into itself
 
 mod foo {
-    use foo::*; //~ ERROR: unresolved import `foo::*` [E0432]
+    use crate::foo::*; //~ ERROR: unresolved import `crate::foo::*` [E0432]
                 //~^ NOTE cannot glob-import a module into itself
 
     mod bar {
diff --git a/tests/ui/imports/issue-8208.stderr b/tests/ui/imports/issue-8208.stderr
index e59aea12cda..0fbe4d35fab 100644
--- a/tests/ui/imports/issue-8208.stderr
+++ b/tests/ui/imports/issue-8208.stderr
@@ -4,11 +4,11 @@ error[E0432]: unresolved import `self::*`
 LL | use self::*;
    |     ^^^^^^^ cannot glob-import a module into itself
 
-error[E0432]: unresolved import `foo::*`
+error[E0432]: unresolved import `crate::foo::*`
   --> $DIR/issue-8208.rs:5:9
    |
-LL |     use foo::*;
-   |         ^^^^^^ cannot glob-import a module into itself
+LL |     use crate::foo::*;
+   |         ^^^^^^^^^^^^^ cannot glob-import a module into itself
 
 error[E0432]: unresolved import `super::bar::*`
   --> $DIR/issue-8208.rs:9:13
diff --git a/tests/ui/imports/issue-8640.rs b/tests/ui/imports/issue-8640.rs
index 51a02a32ec8..7cf73d0e93e 100644
--- a/tests/ui/imports/issue-8640.rs
+++ b/tests/ui/imports/issue-8640.rs
@@ -1,7 +1,7 @@
 #[allow(unused_imports)]
 
 mod foo {
-    use baz::bar;
+    use crate::baz::bar;
     mod bar {}
     //~^ ERROR the name `bar` is defined multiple times
 }
diff --git a/tests/ui/imports/issue-8640.stderr b/tests/ui/imports/issue-8640.stderr
index d22fddb1a69..3ce57e3a44a 100644
--- a/tests/ui/imports/issue-8640.stderr
+++ b/tests/ui/imports/issue-8640.stderr
@@ -1,16 +1,16 @@
 error[E0255]: the name `bar` is defined multiple times
   --> $DIR/issue-8640.rs:5:5
    |
-LL |     use baz::bar;
-   |         -------- previous import of the module `bar` here
+LL |     use crate::baz::bar;
+   |         --------------- previous import of the module `bar` here
 LL |     mod bar {}
    |     ^^^^^^^ `bar` redefined here
    |
    = note: `bar` must be defined only once in the type namespace of this module
 help: you can use `as` to change the binding name of the import
    |
-LL |     use baz::bar as other_bar;
-   |                  ++++++++++++
+LL |     use crate::baz::bar as other_bar;
+   |                         ++++++++++++
 
 error: aborting due to 1 previous error
 
diff --git a/tests/ui/imports/local-modularized-tricky-fail-2.rs b/tests/ui/imports/local-modularized-tricky-fail-2.rs
index 386de88bc3d..80b242b456c 100644
--- a/tests/ui/imports/local-modularized-tricky-fail-2.rs
+++ b/tests/ui/imports/local-modularized-tricky-fail-2.rs
@@ -10,13 +10,13 @@ macro_rules! define_exported { () => {
 define_exported!();
 
 mod m {
-    use exported;
+    use crate::exported;
     //~^ ERROR macro-expanded `macro_export` macros from the current crate cannot
     //~| WARN this was previously accepted
 }
 
 fn main() {
-    ::exported!();
+    crate::exported!();
     //~^ ERROR macro-expanded `macro_export` macros from the current crate cannot
     //~| WARN this was previously accepted
 }
diff --git a/tests/ui/imports/local-modularized-tricky-fail-2.stderr b/tests/ui/imports/local-modularized-tricky-fail-2.stderr
index 2c1965ac0a4..49f5c72947f 100644
--- a/tests/ui/imports/local-modularized-tricky-fail-2.stderr
+++ b/tests/ui/imports/local-modularized-tricky-fail-2.stderr
@@ -1,8 +1,8 @@
 error: macro-expanded `macro_export` macros from the current crate cannot be referred to by absolute paths
   --> $DIR/local-modularized-tricky-fail-2.rs:13:9
    |
-LL |     use exported;
-   |         ^^^^^^^^
+LL |     use crate::exported;
+   |         ^^^^^^^^^^^^^^^
    |
    = 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 #52234 <https://github.com/rust-lang/rust/issues/52234>
@@ -22,8 +22,8 @@ LL |   define_exported!();
 error: macro-expanded `macro_export` macros from the current crate cannot be referred to by absolute paths
   --> $DIR/local-modularized-tricky-fail-2.rs:19:5
    |
-LL |     ::exported!();
-   |     ^^^^^^^^^^
+LL |     crate::exported!();
+   |     ^^^^^^^^^^^^^^^
    |
    = 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 #52234 <https://github.com/rust-lang/rust/issues/52234>
diff --git a/tests/ui/imports/macros.rs b/tests/ui/imports/macros.rs
index 7f479571e5e..cf67e08c87a 100644
--- a/tests/ui/imports/macros.rs
+++ b/tests/ui/imports/macros.rs
@@ -8,13 +8,13 @@ mod foo {
 
 mod m1 {
     m!(use two_macros::*;);
-    use foo::m; // This shadows the glob import
+    use crate::foo::m; // This shadows the glob import
 }
 
 mod m2 {
     use two_macros::*;
     m! { //~ ERROR ambiguous
-        use foo::m;
+        use crate::foo::m;
     }
 }
 
diff --git a/tests/ui/imports/macros.stderr b/tests/ui/imports/macros.stderr
index e34e5359b48..25a678c6b37 100644
--- a/tests/ui/imports/macros.stderr
+++ b/tests/ui/imports/macros.stderr
@@ -8,8 +8,8 @@ LL |     m! {
 note: `m` could refer to the macro imported here
   --> $DIR/macros.rs:17:13
    |
-LL |         use foo::m;
-   |             ^^^^^^
+LL |         use crate::foo::m;
+   |             ^^^^^^^^^^^^^
 note: `m` could also refer to the macro imported here
   --> $DIR/macros.rs:15:9
    |
diff --git a/tests/ui/imports/reexport-star.rs b/tests/ui/imports/reexport-star.rs
index 461dc23b4dc..9bf4a6ce0c4 100644
--- a/tests/ui/imports/reexport-star.rs
+++ b/tests/ui/imports/reexport-star.rs
@@ -6,7 +6,7 @@ mod a {
 }
 
 mod b {
-    pub use a::*;
+    pub use crate::a::*;
 }
 
 pub fn main() {
diff --git a/tests/ui/imports/reexports.rs b/tests/ui/imports/reexports.rs
index 2a1a62834ce..6ad704b53fc 100644
--- a/tests/ui/imports/reexports.rs
+++ b/tests/ui/imports/reexports.rs
@@ -33,8 +33,8 @@ mod b {
 
 mod c {
     // Test that `foo` is not re-exported.
-    use b::a::foo::S; //~ ERROR `foo`
-    use b::b::foo::S as T; //~ ERROR `foo`
+    use crate::b::a::foo::S; //~ ERROR `foo`
+    use crate::b::b::foo::S as T; //~ ERROR `foo`
 }
 
 fn main() {}
diff --git a/tests/ui/imports/reexports.stderr b/tests/ui/imports/reexports.stderr
index fa05c0c0f8e..0ebcf8e58d6 100644
--- a/tests/ui/imports/reexports.stderr
+++ b/tests/ui/imports/reexports.stderr
@@ -11,10 +11,10 @@ LL |         pub use super::foo;
    |                 ^^^^^^^^^^
 
 error[E0603]: module import `foo` is private
-  --> $DIR/reexports.rs:36:15
+  --> $DIR/reexports.rs:36:22
    |
-LL |     use b::a::foo::S;
-   |               ^^^ private module import
+LL |     use crate::b::a::foo::S;
+   |                      ^^^ private module import
    |
 note: the module import `foo` is defined here...
   --> $DIR/reexports.rs:24:17
@@ -28,10 +28,10 @@ LL |     mod foo {
    |     ^^^^^^^
 
 error[E0603]: module import `foo` is private
-  --> $DIR/reexports.rs:37:15
+  --> $DIR/reexports.rs:37:22
    |
-LL |     use b::b::foo::S as T;
-   |               ^^^ private module import
+LL |     use crate::b::b::foo::S as T;
+   |                      ^^^ private module import
    |
 note: the module import `foo` is defined here...
   --> $DIR/reexports.rs:29:17
diff --git a/tests/ui/imports/shadow_builtin_macros.rs b/tests/ui/imports/shadow_builtin_macros.rs
index 5a149067408..7d318dfdb43 100644
--- a/tests/ui/imports/shadow_builtin_macros.rs
+++ b/tests/ui/imports/shadow_builtin_macros.rs
@@ -6,17 +6,17 @@ mod foo {
 }
 
 mod m1 {
-    use foo::panic; // ok
+    use crate::foo::panic; // ok
     fn f() { panic!(); }
 }
 
 mod m2 {
-    use foo::*;
+    use crate::foo::*;
     fn f() { panic!(); } //~ ERROR ambiguous
 }
 
 mod m3 {
-    ::two_macros::m!(use foo::panic;);
+    ::two_macros::m!(use crate::foo::panic;);
     fn f() { panic!(); } //~ ERROR ambiguous
 }
 
@@ -40,12 +40,12 @@ mod bar {
 }
 
 mod m6 {
-    use bar::n; // ok
+    use crate::bar::n; // ok
     n!();
 }
 
 mod m7 {
-    use bar::*;
+    use crate::bar::*;
     n!(); //~ ERROR ambiguous
 }
 
diff --git a/tests/ui/imports/shadow_builtin_macros.stderr b/tests/ui/imports/shadow_builtin_macros.stderr
index 6ffb31c20e6..c828b1193d8 100644
--- a/tests/ui/imports/shadow_builtin_macros.stderr
+++ b/tests/ui/imports/shadow_builtin_macros.stderr
@@ -9,8 +9,8 @@ LL |     fn f() { panic!(); }
 note: `panic` could also refer to the macro imported here
   --> $DIR/shadow_builtin_macros.rs:14:9
    |
-LL |     use foo::*;
-   |         ^^^^^^
+LL |     use crate::foo::*;
+   |         ^^^^^^^^^^^^^
    = help: consider adding an explicit import of `panic` to disambiguate
    = help: or use `self::panic` to refer to this macro unambiguously
 
@@ -42,8 +42,8 @@ LL |     n!();
 note: `n` could refer to the macro imported here
   --> $DIR/shadow_builtin_macros.rs:48:9
    |
-LL |     use bar::*;
-   |         ^^^^^^
+LL |     use crate::bar::*;
+   |         ^^^^^^^^^^^^^
    = help: consider adding an explicit import of `n` to disambiguate
    = help: or use `self::n` to refer to this macro unambiguously
 note: `n` could also refer to the macro imported here
@@ -63,8 +63,8 @@ LL |     fn f() { panic!(); }
 note: `panic` could also refer to the macro imported here
   --> $DIR/shadow_builtin_macros.rs:19:26
    |
-LL |     ::two_macros::m!(use foo::panic;);
-   |                          ^^^^^^^^^^
+LL |     ::two_macros::m!(use crate::foo::panic;);
+   |                          ^^^^^^^^^^^^^^^^^
    = help: use `self::panic` to refer to this macro unambiguously
 
 error: aborting due to 4 previous errors
diff --git a/tests/ui/intrinsics/intrinsic-alignment.rs b/tests/ui/intrinsics/intrinsic-alignment.rs
index c42a4b94e29..a467c445d61 100644
--- a/tests/ui/intrinsics/intrinsic-alignment.rs
+++ b/tests/ui/intrinsics/intrinsic-alignment.rs
@@ -24,16 +24,16 @@ mod m {
     #[cfg(target_arch = "x86")]
     pub fn main() {
         unsafe {
-            assert_eq!(::rusti::pref_align_of::<u64>(), 8);
-            assert_eq!(::rusti::min_align_of::<u64>(), 4);
+            assert_eq!(crate::rusti::pref_align_of::<u64>(), 8);
+            assert_eq!(crate::rusti::min_align_of::<u64>(), 4);
         }
     }
 
     #[cfg(not(target_arch = "x86"))]
     pub fn main() {
         unsafe {
-            assert_eq!(::rusti::pref_align_of::<u64>(), 8);
-            assert_eq!(::rusti::min_align_of::<u64>(), 8);
+            assert_eq!(crate::rusti::pref_align_of::<u64>(), 8);
+            assert_eq!(crate::rusti::min_align_of::<u64>(), 8);
         }
     }
 }
@@ -43,8 +43,8 @@ mod m {
     #[cfg(target_arch = "x86_64")]
     pub fn main() {
         unsafe {
-            assert_eq!(::rusti::pref_align_of::<u64>(), 8);
-            assert_eq!(::rusti::min_align_of::<u64>(), 8);
+            assert_eq!(crate::rusti::pref_align_of::<u64>(), 8);
+            assert_eq!(crate::rusti::min_align_of::<u64>(), 8);
         }
     }
 }
@@ -53,8 +53,8 @@ mod m {
 mod m {
     pub fn main() {
         unsafe {
-            assert_eq!(::rusti::pref_align_of::<u64>(), 8);
-            assert_eq!(::rusti::min_align_of::<u64>(), 8);
+            assert_eq!(crate::rusti::pref_align_of::<u64>(), 8);
+            assert_eq!(crate::rusti::min_align_of::<u64>(), 8);
         }
     }
 }
@@ -63,8 +63,8 @@ mod m {
 mod m {
     pub fn main() {
         unsafe {
-            assert_eq!(::rusti::pref_align_of::<u64>(), 8);
-            assert_eq!(::rusti::min_align_of::<u64>(), 8);
+            assert_eq!(crate::rusti::pref_align_of::<u64>(), 8);
+            assert_eq!(crate::rusti::min_align_of::<u64>(), 8);
         }
     }
 }
diff --git a/tests/ui/issues/issue-10806.rs b/tests/ui/issues/issue-10806.rs
index 72d99ae3a79..31315dc7c93 100644
--- a/tests/ui/issues/issue-10806.rs
+++ b/tests/ui/issues/issue-10806.rs
@@ -1,3 +1,4 @@
+//@ edition: 2015
 //@ run-pass
 #![allow(unused_imports)]
 
diff --git a/tests/ui/issues/issue-12729.rs b/tests/ui/issues/issue-12729.rs
index 74014981df5..4d45846bc60 100644
--- a/tests/ui/issues/issue-12729.rs
+++ b/tests/ui/issues/issue-12729.rs
@@ -1,3 +1,4 @@
+//@ edition: 2015
 //@ check-pass
 #![allow(dead_code)]
 
diff --git a/tests/ui/issues/issue-13105.rs b/tests/ui/issues/issue-13105.rs
index 0dd78372a26..d119aa9c788 100644
--- a/tests/ui/issues/issue-13105.rs
+++ b/tests/ui/issues/issue-13105.rs
@@ -1,3 +1,4 @@
+//@ edition: 2015
 //@ check-pass
 
 trait Foo {
diff --git a/tests/ui/issues/issue-13775.rs b/tests/ui/issues/issue-13775.rs
index 500ec6782a8..1477dab9e21 100644
--- a/tests/ui/issues/issue-13775.rs
+++ b/tests/ui/issues/issue-13775.rs
@@ -1,3 +1,4 @@
+//@ edition: 2015
 //@ check-pass
 
 trait Foo {
diff --git a/tests/ui/issues/issue-15774.rs b/tests/ui/issues/issue-15774.rs
index 8eb327a0d5e..dadd59cc077 100644
--- a/tests/ui/issues/issue-15774.rs
+++ b/tests/ui/issues/issue-15774.rs
@@ -1,3 +1,4 @@
+//@ edition: 2015
 //@ run-pass
 
 #![deny(warnings)]
diff --git a/tests/ui/issues/issue-20427.rs b/tests/ui/issues/issue-20427.rs
index ff84023ebf2..4018043c371 100644
--- a/tests/ui/issues/issue-20427.rs
+++ b/tests/ui/issues/issue-20427.rs
@@ -59,7 +59,7 @@ mod reuse {
 
     pub fn check<u16>() {
         assert_eq!(size_of::<u8>(), 8);
-        assert_eq!(size_of::<::u64>(), 0);
+        assert_eq!(size_of::<crate::u64>(), 0);
         assert_eq!(size_of::<i16>(), 3 * size_of::<*const ()>());
         assert_eq!(size_of::<u16>(), 0);
     }
diff --git a/tests/ui/issues/issue-28983.rs b/tests/ui/issues/issue-28983.rs
index 5273dab16c1..90a4793787d 100644
--- a/tests/ui/issues/issue-28983.rs
+++ b/tests/ui/issues/issue-28983.rs
@@ -7,7 +7,7 @@ impl Test for u32 {
 
 pub mod export {
     #[no_mangle]
-    pub extern "C" fn issue_28983(t: <u32 as ::Test>::T) -> i32 { t*3 }
+    pub extern "C" fn issue_28983(t: <u32 as crate::Test>::T) -> i32 { t*3 }
 }
 
 // to test both exporting and importing functions, import
diff --git a/tests/ui/issues/issue-31776.rs b/tests/ui/issues/issue-31776.rs
index 4b342a0e3b2..abe6c7ecee5 100644
--- a/tests/ui/issues/issue-31776.rs
+++ b/tests/ui/issues/issue-31776.rs
@@ -8,7 +8,7 @@ struct S;
 
 mod m {
     fn f() {
-        impl ::S {
+        impl crate::S {
             pub fn s(&self) {}
         }
     }
@@ -24,7 +24,7 @@ pub struct S1;
 fn f() {
     pub struct Z;
 
-    impl ::Tr for ::S1 {
+    impl crate::Tr for crate::S1 {
         type A = Z; // Private-in-public error unless `struct Z` is pub
     }
 }
@@ -43,7 +43,7 @@ mod m1 {
             pub field: u8
         }
 
-        impl ::Tr1 for ::S2 {
+        impl crate::Tr1 for crate::S2 {
             type A = Z;
             fn pull(&self) -> Self::A { Z{field: 10} }
         }
diff --git a/tests/ui/issues/issue-32797.rs b/tests/ui/issues/issue-32797.rs
index 6711a8f9fe5..470d661cb28 100644
--- a/tests/ui/issues/issue-32797.rs
+++ b/tests/ui/issues/issue-32797.rs
@@ -7,7 +7,7 @@ mod bar {
 
 pub use baz::*;
 mod baz {
-    pub use main as f;
+    pub use crate::main as f;
 }
 
 pub fn main() {}
diff --git a/tests/ui/issues/issue-34074.rs b/tests/ui/issues/issue-34074.rs
index 9b3dee11d9b..d642c74d412 100644
--- a/tests/ui/issues/issue-34074.rs
+++ b/tests/ui/issues/issue-34074.rs
@@ -1,3 +1,4 @@
+//@ edition: 2015
 //@ check-pass
 // Make sure several unnamed function parameters don't conflict with each other
 
diff --git a/tests/ui/issues/issue-41053.rs b/tests/ui/issues/issue-41053.rs
index 18f9e209c33..42b0b008ce9 100644
--- a/tests/ui/issues/issue-41053.rs
+++ b/tests/ui/issues/issue-41053.rs
@@ -11,7 +11,7 @@ impl Iterator for Foo {
     type Item = Box<dyn Trait>;
     fn next(&mut self) -> Option<Box<dyn Trait>> {
         extern crate issue_41053;
-        impl ::Trait for issue_41053::Test {
+        impl crate::Trait for issue_41053::Test {
             fn foo(&self) {}
         }
         Some(Box::new(issue_41053::Test))
diff --git a/tests/ui/issues/issue-47364.rs b/tests/ui/issues/issue-47364.rs
index b657b3d3bde..79cd5ed92a8 100644
--- a/tests/ui/issues/issue-47364.rs
+++ b/tests/ui/issues/issue-47364.rs
@@ -18,18 +18,18 @@ pub enum IResult<I,O> {
     Incomplete(u32, u64)
 }
 
-pub fn multispace<T: Copy>(input: T) -> ::IResult<i8, i8> {
-    ::IResult::Done(0, 0)
+pub fn multispace<T: Copy>(input: T) -> crate::IResult<i8, i8> {
+    crate::IResult::Done(0, 0)
 }
 
 mod nom_sql {
-    fn where_clause(i: &[u8]) -> ::IResult<&[u8], Option<String>> {
-        let X = match ::multispace(i) {
-            ::IResult::Done(..) => ::IResult::Done(i, None::<String>),
-            _ => ::IResult::Error(::Err::NodePosition(0)),
+    fn where_clause(i: &[u8]) -> crate::IResult<&[u8], Option<String>> {
+        let X = match crate::multispace(i) {
+            crate::IResult::Done(..) => crate::IResult::Done(i, None::<String>),
+            _ => crate::IResult::Error(crate::Err::NodePosition(0)),
         };
         match X {
-            ::IResult::Done(_, _) => ::IResult::Done(i, None),
+            crate::IResult::Done(_, _) => crate::IResult::Done(i, None),
             _ => X
         }
     }
@@ -39,16 +39,16 @@ mod nom_sql {
             match {
                 where_clause(i)
             } {
-                ::IResult::Done(_, o) => ::IResult::Done(i, Some(o)),
-                ::IResult::Error(_) => ::IResult::Done(i, None),
-                _ => ::IResult::Incomplete(0, 0),
+                crate::IResult::Done(_, o) => crate::IResult::Done(i, Some(o)),
+                crate::IResult::Error(_) => crate::IResult::Done(i, None),
+                _ => crate::IResult::Incomplete(0, 0),
             }
         } {
-            ::IResult::Done(z, _) => ::IResult::Done(z, None::<String>),
+            crate::IResult::Done(z, _) => crate::IResult::Done(z, None::<String>),
             _ => return ()
         };
         match Y {
-            ::IResult::Done(x, _) => {
+            crate::IResult::Done(x, _) => {
                 let bytes = b";   ";
                 let len = x.len();
                 bytes[len];
diff --git a/tests/ui/issues/issue-50187.rs b/tests/ui/issues/issue-50187.rs
index 7304903b954..478416f86dc 100644
--- a/tests/ui/issues/issue-50187.rs
+++ b/tests/ui/issues/issue-50187.rs
@@ -13,20 +13,20 @@ mod macro_ns {
 }
 
 mod merge2 {
-    pub use type_ns::A;
-    pub use value_ns::A;
+    pub use crate::type_ns::A;
+    pub use crate::value_ns::A;
 }
 mod merge3 {
-    pub use type_ns::A;
-    pub use value_ns::A;
-    pub use macro_ns::A;
+    pub use crate::type_ns::A;
+    pub use crate::value_ns::A;
+    pub use crate::macro_ns::A;
 }
 
 mod use2 {
-    pub use merge2::A;
+    pub use crate::merge2::A;
 }
 mod use3 {
-    pub use merge3::A;
+    pub use crate::merge3::A;
 }
 
 fn main() {
diff --git a/tests/ui/issues/issue-50571.fixed b/tests/ui/issues/issue-50571.fixed
index 37ed729be81..6d73f17cca4 100644
--- a/tests/ui/issues/issue-50571.fixed
+++ b/tests/ui/issues/issue-50571.fixed
@@ -1,3 +1,4 @@
+//@ edition: 2015
 //@ run-rustfix
 
 #![allow(dead_code)]
diff --git a/tests/ui/issues/issue-50571.rs b/tests/ui/issues/issue-50571.rs
index 97a042d3ec1..dd840ffe4d1 100644
--- a/tests/ui/issues/issue-50571.rs
+++ b/tests/ui/issues/issue-50571.rs
@@ -1,3 +1,4 @@
+//@ edition: 2015
 //@ run-rustfix
 
 #![allow(dead_code)]
diff --git a/tests/ui/issues/issue-50571.stderr b/tests/ui/issues/issue-50571.stderr
index 86709410670..9b00fe0f5db 100644
--- a/tests/ui/issues/issue-50571.stderr
+++ b/tests/ui/issues/issue-50571.stderr
@@ -1,5 +1,5 @@
 error[E0642]: patterns aren't allowed in methods without bodies
-  --> $DIR/issue-50571.rs:5:12
+  --> $DIR/issue-50571.rs:6:12
    |
 LL |     fn foo([a, b]: [i32; 2]) {}
    |            ^^^^^^
diff --git a/tests/ui/issues/issue-50761.rs b/tests/ui/issues/issue-50761.rs
index 6911bfa0265..8f5a32e0a00 100644
--- a/tests/ui/issues/issue-50761.rs
+++ b/tests/ui/issues/issue-50761.rs
@@ -14,7 +14,7 @@ mod b {
     }
 
     impl Builder {
-        pub fn with_a(&mut self, _a: fn() -> dyn (::a::A)) {}
+        pub fn with_a(&mut self, _a: fn() -> dyn (crate::a::A)) {}
     }
 }
 
diff --git a/tests/ui/issues/issue-6936.rs b/tests/ui/issues/issue-6936.rs
index 26531bba9ec..e9aa80b4eb3 100644
--- a/tests/ui/issues/issue-6936.rs
+++ b/tests/ui/issues/issue-6936.rs
@@ -1,22 +1,22 @@
 struct T;
 
 mod t1 {
-    type Foo = ::T;
+    type Foo = crate::T;
     mod Foo {} //~ ERROR the name `Foo` is defined multiple times
 }
 
 mod t2 {
-    type Foo = ::T;
+    type Foo = crate::T;
     struct Foo; //~ ERROR the name `Foo` is defined multiple times
 }
 
 mod t3 {
-    type Foo = ::T;
+    type Foo = crate::T;
     enum Foo {} //~ ERROR the name `Foo` is defined multiple times
 }
 
 mod t4 {
-    type Foo = ::T;
+    type Foo = crate::T;
     fn Foo() {} // ok
 }
 
@@ -26,7 +26,7 @@ mod t5 {
 }
 
 mod t6 {
-    type Foo = ::T;
+    type Foo = crate::T;
     impl Foo {} // ok
 }
 
diff --git a/tests/ui/issues/issue-6936.stderr b/tests/ui/issues/issue-6936.stderr
index 9292d60ca68..03cc50636b4 100644
--- a/tests/ui/issues/issue-6936.stderr
+++ b/tests/ui/issues/issue-6936.stderr
@@ -1,8 +1,8 @@
 error[E0428]: the name `Foo` is defined multiple times
   --> $DIR/issue-6936.rs:5:5
    |
-LL |     type Foo = ::T;
-   |     --------------- previous definition of the type `Foo` here
+LL |     type Foo = crate::T;
+   |     -------------------- previous definition of the type `Foo` here
 LL |     mod Foo {}
    |     ^^^^^^^ `Foo` redefined here
    |
@@ -11,8 +11,8 @@ LL |     mod Foo {}
 error[E0428]: the name `Foo` is defined multiple times
   --> $DIR/issue-6936.rs:10:5
    |
-LL |     type Foo = ::T;
-   |     --------------- previous definition of the type `Foo` here
+LL |     type Foo = crate::T;
+   |     -------------------- previous definition of the type `Foo` here
 LL |     struct Foo;
    |     ^^^^^^^^^^^ `Foo` redefined here
    |
@@ -21,8 +21,8 @@ LL |     struct Foo;
 error[E0428]: the name `Foo` is defined multiple times
   --> $DIR/issue-6936.rs:15:5
    |
-LL |     type Foo = ::T;
-   |     --------------- previous definition of the type `Foo` here
+LL |     type Foo = crate::T;
+   |     -------------------- previous definition of the type `Foo` here
 LL |     enum Foo {}
    |     ^^^^^^^^ `Foo` redefined here
    |
diff --git a/tests/ui/issues/issue-7663.rs b/tests/ui/issues/issue-7663.rs
index ad52ea21127..d2b2c727cab 100644
--- a/tests/ui/issues/issue-7663.rs
+++ b/tests/ui/issues/issue-7663.rs
@@ -8,7 +8,7 @@ mod test1 {
     mod bar { pub fn p() -> isize { 2 } }
 
     pub mod baz {
-        use test1::bar::p;
+        use crate::test1::bar::p;
 
         pub fn my_main() { assert_eq!(p(), 2); }
     }
@@ -20,7 +20,7 @@ mod test2 {
     mod bar { pub fn p() -> isize { 2 } }
 
     pub mod baz {
-        use test2::bar::p;
+        use crate::test2::bar::p;
 
         pub fn my_main() { assert_eq!(p(), 2); }
     }
diff --git a/tests/ui/issues/issue-86756.rs b/tests/ui/issues/issue-86756.rs
index 7f864eb2850..55a6c144839 100644
--- a/tests/ui/issues/issue-86756.rs
+++ b/tests/ui/issues/issue-86756.rs
@@ -1,3 +1,4 @@
+//@ edition: 2015
 trait Foo<T, T = T> {}
 //~^ ERROR the name `T` is already used for a generic parameter in this item's generic parameters
 
diff --git a/tests/ui/issues/issue-86756.stderr b/tests/ui/issues/issue-86756.stderr
index 728d7ea7095..0f68b764850 100644
--- a/tests/ui/issues/issue-86756.stderr
+++ b/tests/ui/issues/issue-86756.stderr
@@ -1,5 +1,5 @@
 error[E0403]: the name `T` is already used for a generic parameter in this item's generic parameters
-  --> $DIR/issue-86756.rs:1:14
+  --> $DIR/issue-86756.rs:2:14
    |
 LL | trait Foo<T, T = T> {}
    |           -  ^ already used
@@ -7,13 +7,13 @@ LL | trait Foo<T, T = T> {}
    |           first use of `T`
 
 error[E0412]: cannot find type `dyn` in this scope
-  --> $DIR/issue-86756.rs:5:10
+  --> $DIR/issue-86756.rs:6:10
    |
 LL |     eq::<dyn, Foo>
    |          ^^^ not found in this scope
 
 warning: trait objects without an explicit `dyn` are deprecated
-  --> $DIR/issue-86756.rs:5:15
+  --> $DIR/issue-86756.rs:6:15
    |
 LL |     eq::<dyn, Foo>
    |               ^^^
@@ -27,13 +27,13 @@ LL |     eq::<dyn, dyn Foo>
    |               +++
 
 error[E0107]: missing generics for trait `Foo`
-  --> $DIR/issue-86756.rs:5:15
+  --> $DIR/issue-86756.rs:6:15
    |
 LL |     eq::<dyn, Foo>
    |               ^^^ expected at least 1 generic argument
    |
 note: trait defined here, with at least 1 generic parameter: `T`
-  --> $DIR/issue-86756.rs:1:7
+  --> $DIR/issue-86756.rs:2:7
    |
 LL | trait Foo<T, T = T> {}
    |       ^^^ -
diff --git a/tests/ui/lexer/lex-bad-str-literal-as-char-3.rs b/tests/ui/lexer/lex-bad-str-literal-as-char-3.rs
index 52781d9c6d8..5b290899a70 100644
--- a/tests/ui/lexer/lex-bad-str-literal-as-char-3.rs
+++ b/tests/ui/lexer/lex-bad-str-literal-as-char-3.rs
@@ -1,4 +1,5 @@
 //@ revisions: rust2015 rust2018 rust2021
+//@[rust2015] edition:2015
 //@[rust2018] edition:2018
 //@[rust2021] edition:2021
 fn main() {
diff --git a/tests/ui/lexer/lex-bad-str-literal-as-char-3.rust2015.stderr b/tests/ui/lexer/lex-bad-str-literal-as-char-3.rust2015.stderr
index 2f92225de1f..be3b114baf9 100644
--- a/tests/ui/lexer/lex-bad-str-literal-as-char-3.rust2015.stderr
+++ b/tests/ui/lexer/lex-bad-str-literal-as-char-3.rust2015.stderr
@@ -1,5 +1,5 @@
 error[E0762]: unterminated character literal
-  --> $DIR/lex-bad-str-literal-as-char-3.rs:5:26
+  --> $DIR/lex-bad-str-literal-as-char-3.rs:6:26
    |
 LL |     println!('hello world');
    |                          ^^^
diff --git a/tests/ui/lexer/lex-bad-str-literal-as-char-3.rust2018.stderr b/tests/ui/lexer/lex-bad-str-literal-as-char-3.rust2018.stderr
index 2f92225de1f..be3b114baf9 100644
--- a/tests/ui/lexer/lex-bad-str-literal-as-char-3.rust2018.stderr
+++ b/tests/ui/lexer/lex-bad-str-literal-as-char-3.rust2018.stderr
@@ -1,5 +1,5 @@
 error[E0762]: unterminated character literal
-  --> $DIR/lex-bad-str-literal-as-char-3.rs:5:26
+  --> $DIR/lex-bad-str-literal-as-char-3.rs:6:26
    |
 LL |     println!('hello world');
    |                          ^^^
diff --git a/tests/ui/lexer/lex-bad-str-literal-as-char-3.rust2021.stderr b/tests/ui/lexer/lex-bad-str-literal-as-char-3.rust2021.stderr
index e10046e58e4..605cb66df1c 100644
--- a/tests/ui/lexer/lex-bad-str-literal-as-char-3.rust2021.stderr
+++ b/tests/ui/lexer/lex-bad-str-literal-as-char-3.rust2021.stderr
@@ -1,5 +1,5 @@
 error: prefix `world` is unknown
-  --> $DIR/lex-bad-str-literal-as-char-3.rs:5:21
+  --> $DIR/lex-bad-str-literal-as-char-3.rs:6:21
    |
 LL |     println!('hello world');
    |                     ^^^^^ unknown prefix
@@ -12,7 +12,7 @@ LL +     println!("hello world");
    |
 
 error[E0762]: unterminated character literal
-  --> $DIR/lex-bad-str-literal-as-char-3.rs:5:26
+  --> $DIR/lex-bad-str-literal-as-char-3.rs:6:26
    |
 LL |     println!('hello world');
    |                          ^^^
diff --git a/tests/ui/lifetimes/bare-trait-object-borrowck.rs b/tests/ui/lifetimes/bare-trait-object-borrowck.rs
index c54d3effffe..4b81b66118a 100644
--- a/tests/ui/lifetimes/bare-trait-object-borrowck.rs
+++ b/tests/ui/lifetimes/bare-trait-object-borrowck.rs
@@ -1,5 +1,7 @@
-#![allow(bare_trait_objects)]
+//@ edition: 2015
 //@ check-pass
+#![allow(bare_trait_objects)]
+
 pub struct FormatWith<'a, I, F> {
     sep: &'a str,
     /// FormatWith uses interior mutability because Display::fmt takes &self.
diff --git a/tests/ui/lifetimes/bare-trait-object.rs b/tests/ui/lifetimes/bare-trait-object.rs
index 2feb8a880b1..e74f8ac03ea 100644
--- a/tests/ui/lifetimes/bare-trait-object.rs
+++ b/tests/ui/lifetimes/bare-trait-object.rs
@@ -1,4 +1,5 @@
 // Verify that lifetime resolution correctly accounts for `Fn` bare trait objects.
+//@ edition: 2015
 //@ check-pass
 #![allow(bare_trait_objects)]
 
diff --git a/tests/ui/lint/bare-trait-objects-path.rs b/tests/ui/lint/bare-trait-objects-path.rs
index 0e2294715cd..9643c48c9b8 100644
--- a/tests/ui/lint/bare-trait-objects-path.rs
+++ b/tests/ui/lint/bare-trait-objects-path.rs
@@ -1,3 +1,4 @@
+//@ edition: 2015
 #![feature(associated_type_defaults)]
 
 trait Assoc {
diff --git a/tests/ui/lint/bare-trait-objects-path.stderr b/tests/ui/lint/bare-trait-objects-path.stderr
index e611abd31f3..25f3e857806 100644
--- a/tests/ui/lint/bare-trait-objects-path.stderr
+++ b/tests/ui/lint/bare-trait-objects-path.stderr
@@ -1,5 +1,5 @@
 warning: trait objects without an explicit `dyn` are deprecated
-  --> $DIR/bare-trait-objects-path.rs:14:5
+  --> $DIR/bare-trait-objects-path.rs:15:5
    |
 LL |     Dyn::func();
    |     ^^^
@@ -13,7 +13,7 @@ LL |     <dyn Dyn>::func();
    |     ++++    +
 
 warning: trait objects without an explicit `dyn` are deprecated
-  --> $DIR/bare-trait-objects-path.rs:17:5
+  --> $DIR/bare-trait-objects-path.rs:18:5
    |
 LL |     ::Dyn::func();
    |     ^^^^^
@@ -26,7 +26,7 @@ LL |     <dyn (::Dyn)>::func();
    |     ++++++     ++
 
 warning: trait objects without an explicit `dyn` are deprecated
-  --> $DIR/bare-trait-objects-path.rs:20:5
+  --> $DIR/bare-trait-objects-path.rs:21:5
    |
 LL |     Dyn::CONST;
    |     ^^^
@@ -39,7 +39,7 @@ LL |     <dyn Dyn>::CONST;
    |     ++++    +
 
 warning: trait objects without an explicit `dyn` are deprecated
-  --> $DIR/bare-trait-objects-path.rs:23:12
+  --> $DIR/bare-trait-objects-path.rs:24:12
    |
 LL |     let _: Dyn::Ty;
    |            ^^^
@@ -52,7 +52,7 @@ LL |     let _: <dyn Dyn>::Ty;
    |            ++++    +
 
 error[E0223]: ambiguous associated type
-  --> $DIR/bare-trait-objects-path.rs:23:12
+  --> $DIR/bare-trait-objects-path.rs:24:12
    |
 LL |     let _: Dyn::Ty;
    |            ^^^^^^^
diff --git a/tests/ui/lint/lint-ctypes-enum.rs b/tests/ui/lint/lint-ctypes-enum.rs
index 612da86c956..f900f998d06 100644
--- a/tests/ui/lint/lint-ctypes-enum.rs
+++ b/tests/ui/lint/lint-ctypes-enum.rs
@@ -85,8 +85,8 @@ extern "C" {
     fn repr_c(x: ReprC);
     fn repr_u8(x: U8);
     fn repr_isize(x: Isize);
-    fn repr_u128(x: U128); //~ ERROR `extern` block uses type `U128`
-    fn repr_i128(x: I128); //~ ERROR `extern` block uses type `I128`
+    fn repr_u128(x: U128);
+    fn repr_i128(x: I128);
     fn option_ref(x: Option<&'static u8>);
     fn option_fn(x: Option<extern "C" fn()>);
     fn option_nonnull(x: Option<std::ptr::NonNull<u8>>);
@@ -96,14 +96,12 @@ extern "C" {
     fn option_nonzero_u32(x: Option<num::NonZero<u32>>);
     fn option_nonzero_u64(x: Option<num::NonZero<u64>>);
     fn option_nonzero_u128(x: Option<num::NonZero<u128>>);
-    //~^ ERROR `extern` block uses type `u128`
     fn option_nonzero_usize(x: Option<num::NonZero<usize>>);
     fn option_nonzero_i8(x: Option<num::NonZero<i8>>);
     fn option_nonzero_i16(x: Option<num::NonZero<i16>>);
     fn option_nonzero_i32(x: Option<num::NonZero<i32>>);
     fn option_nonzero_i64(x: Option<num::NonZero<i64>>);
     fn option_nonzero_i128(x: Option<num::NonZero<i128>>);
-    //~^ ERROR `extern` block uses type `i128`
     fn option_nonzero_isize(x: Option<num::NonZero<isize>>);
     fn option_transparent_struct(x: Option<TransparentStruct<num::NonZero<u8>>>);
     fn option_transparent_enum(x: Option<TransparentEnum<num::NonZero<u8>>>);
@@ -121,14 +119,12 @@ extern "C" {
     fn result_nonzero_u32_t(x: Result<num::NonZero<u32>, ()>);
     fn result_nonzero_u64_t(x: Result<num::NonZero<u64>, ()>);
     fn result_nonzero_u128_t(x: Result<num::NonZero<u128>, ()>);
-    //~^ ERROR `extern` block uses type `u128`
     fn result_nonzero_usize_t(x: Result<num::NonZero<usize>, ()>);
     fn result_nonzero_i8_t(x: Result<num::NonZero<i8>, ()>);
     fn result_nonzero_i16_t(x: Result<num::NonZero<i16>, ()>);
     fn result_nonzero_i32_t(x: Result<num::NonZero<i32>, ()>);
     fn result_nonzero_i64_t(x: Result<num::NonZero<i64>, ()>);
     fn result_nonzero_i128_t(x: Result<num::NonZero<i128>, ()>);
-    //~^ ERROR `extern` block uses type `i128`
     fn result_nonzero_isize_t(x: Result<num::NonZero<isize>, ()>);
     fn result_transparent_struct_t(x: Result<TransparentStruct<num::NonZero<u8>>, ()>);
     fn result_transparent_enum_t(x: Result<TransparentEnum<num::NonZero<u8>>, ()>);
@@ -159,14 +155,12 @@ extern "C" {
     fn result_nonzero_u32_e(x: Result<(), num::NonZero<u32>>);
     fn result_nonzero_u64_e(x: Result<(), num::NonZero<u64>>);
     fn result_nonzero_u128_e(x: Result<(), num::NonZero<u128>>);
-    //~^ ERROR `extern` block uses type `u128`
     fn result_nonzero_usize_e(x: Result<(), num::NonZero<usize>>);
     fn result_nonzero_i8_e(x: Result<(), num::NonZero<i8>>);
     fn result_nonzero_i16_e(x: Result<(), num::NonZero<i16>>);
     fn result_nonzero_i32_e(x: Result<(), num::NonZero<i32>>);
     fn result_nonzero_i64_e(x: Result<(), num::NonZero<i64>>);
     fn result_nonzero_i128_e(x: Result<(), num::NonZero<i128>>);
-    //~^ ERROR `extern` block uses type `i128`
     fn result_nonzero_isize_e(x: Result<(), num::NonZero<isize>>);
     fn result_transparent_struct_e(x: Result<(), TransparentStruct<num::NonZero<u8>>>);
     fn result_transparent_enum_e(x: Result<(), TransparentEnum<num::NonZero<u8>>>);
diff --git a/tests/ui/lint/lint-ctypes-enum.stderr b/tests/ui/lint/lint-ctypes-enum.stderr
index 50a6f526f26..40d22723309 100644
--- a/tests/ui/lint/lint-ctypes-enum.stderr
+++ b/tests/ui/lint/lint-ctypes-enum.stderr
@@ -45,50 +45,8 @@ note: the type is defined here
 LL | enum T {
    | ^^^^^^
 
-error: `extern` block uses type `U128`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:88:21
-   |
-LL |     fn repr_u128(x: U128);
-   |                     ^^^^ not FFI-safe
-   |
-   = note: 128-bit integers don't currently have a known stable ABI
-note: the type is defined here
-  --> $DIR/lint-ctypes-enum.rs:44:1
-   |
-LL | enum U128 {
-   | ^^^^^^^^^
-
-error: `extern` block uses type `I128`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:89:21
-   |
-LL |     fn repr_i128(x: I128);
-   |                     ^^^^ not FFI-safe
-   |
-   = note: 128-bit integers don't currently have a known stable ABI
-note: the type is defined here
-  --> $DIR/lint-ctypes-enum.rs:51:1
-   |
-LL | enum I128 {
-   | ^^^^^^^^^
-
-error: `extern` block uses type `u128`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:98:31
-   |
-LL |     fn option_nonzero_u128(x: Option<num::NonZero<u128>>);
-   |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
-   |
-   = note: 128-bit integers don't currently have a known stable ABI
-
-error: `extern` block uses type `i128`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:105:31
-   |
-LL |     fn option_nonzero_i128(x: Option<num::NonZero<i128>>);
-   |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
-   |
-   = note: 128-bit integers don't currently have a known stable ABI
-
 error: `extern` block uses type `Option<TransparentUnion<NonZero<u8>>>`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:110:36
+  --> $DIR/lint-ctypes-enum.rs:108:36
    |
 LL |     fn option_transparent_union(x: Option<TransparentUnion<num::NonZero<u8>>>);
    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -97,7 +55,7 @@ LL |     fn option_transparent_union(x: Option<TransparentUnion<num::NonZero<u8>
    = note: enum has no representation hint
 
 error: `extern` block uses type `Option<Rust<NonZero<u8>>>`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:112:28
+  --> $DIR/lint-ctypes-enum.rs:110:28
    |
 LL |     fn option_repr_rust(x: Option<Rust<num::NonZero<u8>>>);
    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -106,7 +64,7 @@ LL |     fn option_repr_rust(x: Option<Rust<num::NonZero<u8>>>);
    = note: enum has no representation hint
 
 error: `extern` block uses type `Option<u8>`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:113:21
+  --> $DIR/lint-ctypes-enum.rs:111:21
    |
 LL |     fn option_u8(x: Option<u8>);
    |                     ^^^^^^^^^^ not FFI-safe
@@ -114,24 +72,8 @@ LL |     fn option_u8(x: Option<u8>);
    = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
    = note: enum has no representation hint
 
-error: `extern` block uses type `u128`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:123:33
-   |
-LL |     fn result_nonzero_u128_t(x: Result<num::NonZero<u128>, ()>);
-   |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
-   |
-   = note: 128-bit integers don't currently have a known stable ABI
-
-error: `extern` block uses type `i128`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:130:33
-   |
-LL |     fn result_nonzero_i128_t(x: Result<num::NonZero<i128>, ()>);
-   |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
-   |
-   = note: 128-bit integers don't currently have a known stable ABI
-
 error: `extern` block uses type `Result<TransparentUnion<NonZero<u8>>, ()>`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:135:38
+  --> $DIR/lint-ctypes-enum.rs:131:38
    |
 LL |     fn result_transparent_union_t(x: Result<TransparentUnion<num::NonZero<u8>>, ()>);
    |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -140,7 +82,7 @@ LL |     fn result_transparent_union_t(x: Result<TransparentUnion<num::NonZero<u
    = note: enum has no representation hint
 
 error: `extern` block uses type `Result<Rust<NonZero<u8>>, ()>`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:137:30
+  --> $DIR/lint-ctypes-enum.rs:133:30
    |
 LL |     fn result_repr_rust_t(x: Result<Rust<num::NonZero<u8>>, ()>);
    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -149,7 +91,7 @@ LL |     fn result_repr_rust_t(x: Result<Rust<num::NonZero<u8>>, ()>);
    = note: enum has no representation hint
 
 error: `extern` block uses type `Result<NonZero<u8>, U>`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:141:51
+  --> $DIR/lint-ctypes-enum.rs:137:51
    |
 LL |     fn result_1zst_exhaustive_single_variant_t(x: Result<num::NonZero<u8>, U>);
    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -158,7 +100,7 @@ LL |     fn result_1zst_exhaustive_single_variant_t(x: Result<num::NonZero<u8>,
    = note: enum has no representation hint
 
 error: `extern` block uses type `Result<NonZero<u8>, B>`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:143:53
+  --> $DIR/lint-ctypes-enum.rs:139:53
    |
 LL |     fn result_1zst_exhaustive_multiple_variant_t(x: Result<num::NonZero<u8>, B>);
    |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -167,7 +109,7 @@ LL |     fn result_1zst_exhaustive_multiple_variant_t(x: Result<num::NonZero<u8>
    = note: enum has no representation hint
 
 error: `extern` block uses type `Result<NonZero<u8>, NonExhaustive>`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:145:51
+  --> $DIR/lint-ctypes-enum.rs:141:51
    |
 LL |     fn result_1zst_non_exhaustive_no_variant_t(x: Result<num::NonZero<u8>, NonExhaustive>);
    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -176,7 +118,7 @@ LL |     fn result_1zst_non_exhaustive_no_variant_t(x: Result<num::NonZero<u8>,
    = note: enum has no representation hint
 
 error: `extern` block uses type `Result<NonZero<u8>, Field>`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:148:49
+  --> $DIR/lint-ctypes-enum.rs:144:49
    |
 LL |     fn result_1zst_exhaustive_single_field_t(x: Result<num::NonZero<u8>, Field>);
    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -185,7 +127,7 @@ LL |     fn result_1zst_exhaustive_single_field_t(x: Result<num::NonZero<u8>, Fi
    = note: enum has no representation hint
 
 error: `extern` block uses type `Result<Result<(), NonZero<u8>>, ()>`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:150:30
+  --> $DIR/lint-ctypes-enum.rs:146:30
    |
 LL |     fn result_cascading_t(x: Result<Result<(), num::NonZero<u8>>, ()>);
    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -193,24 +135,8 @@ LL |     fn result_cascading_t(x: Result<Result<(), num::NonZero<u8>>, ()>);
    = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
    = note: enum has no representation hint
 
-error: `extern` block uses type `u128`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:161:33
-   |
-LL |     fn result_nonzero_u128_e(x: Result<(), num::NonZero<u128>>);
-   |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
-   |
-   = note: 128-bit integers don't currently have a known stable ABI
-
-error: `extern` block uses type `i128`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:168:33
-   |
-LL |     fn result_nonzero_i128_e(x: Result<(), num::NonZero<i128>>);
-   |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
-   |
-   = note: 128-bit integers don't currently have a known stable ABI
-
 error: `extern` block uses type `Result<(), TransparentUnion<NonZero<u8>>>`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:173:38
+  --> $DIR/lint-ctypes-enum.rs:167:38
    |
 LL |     fn result_transparent_union_e(x: Result<(), TransparentUnion<num::NonZero<u8>>>);
    |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -219,7 +145,7 @@ LL |     fn result_transparent_union_e(x: Result<(), TransparentUnion<num::NonZe
    = note: enum has no representation hint
 
 error: `extern` block uses type `Result<(), Rust<NonZero<u8>>>`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:175:30
+  --> $DIR/lint-ctypes-enum.rs:169:30
    |
 LL |     fn result_repr_rust_e(x: Result<(), Rust<num::NonZero<u8>>>);
    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -228,7 +154,7 @@ LL |     fn result_repr_rust_e(x: Result<(), Rust<num::NonZero<u8>>>);
    = note: enum has no representation hint
 
 error: `extern` block uses type `Result<U, NonZero<u8>>`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:179:51
+  --> $DIR/lint-ctypes-enum.rs:173:51
    |
 LL |     fn result_1zst_exhaustive_single_variant_e(x: Result<U, num::NonZero<u8>>);
    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -237,7 +163,7 @@ LL |     fn result_1zst_exhaustive_single_variant_e(x: Result<U, num::NonZero<u8
    = note: enum has no representation hint
 
 error: `extern` block uses type `Result<B, NonZero<u8>>`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:181:53
+  --> $DIR/lint-ctypes-enum.rs:175:53
    |
 LL |     fn result_1zst_exhaustive_multiple_variant_e(x: Result<B, num::NonZero<u8>>);
    |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -246,7 +172,7 @@ LL |     fn result_1zst_exhaustive_multiple_variant_e(x: Result<B, num::NonZero<
    = note: enum has no representation hint
 
 error: `extern` block uses type `Result<NonExhaustive, NonZero<u8>>`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:183:51
+  --> $DIR/lint-ctypes-enum.rs:177:51
    |
 LL |     fn result_1zst_non_exhaustive_no_variant_e(x: Result<NonExhaustive, num::NonZero<u8>>);
    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -255,7 +181,7 @@ LL |     fn result_1zst_non_exhaustive_no_variant_e(x: Result<NonExhaustive, num
    = note: enum has no representation hint
 
 error: `extern` block uses type `Result<Field, NonZero<u8>>`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:186:49
+  --> $DIR/lint-ctypes-enum.rs:180:49
    |
 LL |     fn result_1zst_exhaustive_single_field_e(x: Result<Field, num::NonZero<u8>>);
    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -264,7 +190,7 @@ LL |     fn result_1zst_exhaustive_single_field_e(x: Result<Field, num::NonZero<
    = note: enum has no representation hint
 
 error: `extern` block uses type `Result<(), Result<(), NonZero<u8>>>`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:188:30
+  --> $DIR/lint-ctypes-enum.rs:182:30
    |
 LL |     fn result_cascading_e(x: Result<(), Result<(), num::NonZero<u8>>>);
    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -273,7 +199,7 @@ LL |     fn result_cascading_e(x: Result<(), Result<(), num::NonZero<u8>>>);
    = note: enum has no representation hint
 
 error: `extern` block uses type `Result<(), ()>`, which is not FFI-safe
-  --> $DIR/lint-ctypes-enum.rs:190:27
+  --> $DIR/lint-ctypes-enum.rs:184:27
    |
 LL |     fn result_unit_t_e(x: Result<(), ()>);
    |                           ^^^^^^^^^^^^^^ not FFI-safe
@@ -281,5 +207,5 @@ LL |     fn result_unit_t_e(x: Result<(), ()>);
    = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
    = note: enum has no representation hint
 
-error: aborting due to 29 previous errors
+error: aborting due to 21 previous errors
 
diff --git a/tests/ui/lint/lint-ctypes-fn.rs b/tests/ui/lint/lint-ctypes-fn.rs
index 73820c86d1a..0b84098e390 100644
--- a/tests/ui/lint/lint-ctypes-fn.rs
+++ b/tests/ui/lint/lint-ctypes-fn.rs
@@ -89,12 +89,6 @@ pub extern "C" fn boxed_trait(p: Box<dyn Trait>) { }
 pub extern "C" fn char_type(p: char) { }
 //~^ ERROR uses type `char`
 
-pub extern "C" fn i128_type(p: i128) { }
-//~^ ERROR uses type `i128`
-
-pub extern "C" fn u128_type(p: u128) { }
-//~^ ERROR uses type `u128`
-
 pub extern "C" fn tuple_type(p: (i32, i32)) { }
 //~^ ERROR uses type `(i32, i32)`
 
@@ -120,9 +114,6 @@ pub extern "C" fn fn_type2(p: fn()) { }
 
 pub extern "C" fn fn_contained(p: RustBadRet) { }
 
-pub extern "C" fn transparent_i128(p: TransparentI128) { }
-//~^ ERROR: uses type `i128`
-
 pub extern "C" fn transparent_str(p: TransparentStr) { }
 //~^ ERROR: uses type `str`
 
@@ -161,6 +152,12 @@ pub extern "C" fn good17(p: TransparentCustomZst) { }
 #[allow(improper_ctypes_definitions)]
 pub extern "C" fn good18(_: &String) { }
 
+pub extern "C" fn good_i128_type(p: i128) { }
+
+pub extern "C" fn good_u128_type(p: u128) { }
+
+pub extern "C" fn good_transparent_i128(p: TransparentI128) { }
+
 #[cfg(not(target_arch = "wasm32"))]
 pub extern "C" fn good1(size: *const c_int) { }
 
diff --git a/tests/ui/lint/lint-ctypes-fn.stderr b/tests/ui/lint/lint-ctypes-fn.stderr
index a62533a4be1..a19c04a63b5 100644
--- a/tests/ui/lint/lint-ctypes-fn.stderr
+++ b/tests/ui/lint/lint-ctypes-fn.stderr
@@ -54,24 +54,8 @@ LL | pub extern "C" fn char_type(p: char) { }
    = help: consider using `u32` or `libc::wchar_t` instead
    = note: the `char` type has no C equivalent
 
-error: `extern` fn uses type `i128`, which is not FFI-safe
-  --> $DIR/lint-ctypes-fn.rs:92:32
-   |
-LL | pub extern "C" fn i128_type(p: i128) { }
-   |                                ^^^^ not FFI-safe
-   |
-   = note: 128-bit integers don't currently have a known stable ABI
-
-error: `extern` fn uses type `u128`, which is not FFI-safe
-  --> $DIR/lint-ctypes-fn.rs:95:32
-   |
-LL | pub extern "C" fn u128_type(p: u128) { }
-   |                                ^^^^ not FFI-safe
-   |
-   = note: 128-bit integers don't currently have a known stable ABI
-
 error: `extern` fn uses type `(i32, i32)`, which is not FFI-safe
-  --> $DIR/lint-ctypes-fn.rs:98:33
+  --> $DIR/lint-ctypes-fn.rs:92:33
    |
 LL | pub extern "C" fn tuple_type(p: (i32, i32)) { }
    |                                 ^^^^^^^^^^ not FFI-safe
@@ -80,7 +64,7 @@ LL | pub extern "C" fn tuple_type(p: (i32, i32)) { }
    = note: tuples have unspecified layout
 
 error: `extern` fn uses type `(i32, i32)`, which is not FFI-safe
-  --> $DIR/lint-ctypes-fn.rs:101:34
+  --> $DIR/lint-ctypes-fn.rs:95:34
    |
 LL | pub extern "C" fn tuple_type2(p: I32Pair) { }
    |                                  ^^^^^^^ not FFI-safe
@@ -89,7 +73,7 @@ LL | pub extern "C" fn tuple_type2(p: I32Pair) { }
    = note: tuples have unspecified layout
 
 error: `extern` fn uses type `ZeroSize`, which is not FFI-safe
-  --> $DIR/lint-ctypes-fn.rs:104:32
+  --> $DIR/lint-ctypes-fn.rs:98:32
    |
 LL | pub extern "C" fn zero_size(p: ZeroSize) { }
    |                                ^^^^^^^^ not FFI-safe
@@ -103,7 +87,7 @@ LL | pub struct ZeroSize;
    | ^^^^^^^^^^^^^^^^^^^
 
 error: `extern` fn uses type `ZeroSizeWithPhantomData`, which is not FFI-safe
-  --> $DIR/lint-ctypes-fn.rs:107:40
+  --> $DIR/lint-ctypes-fn.rs:101:40
    |
 LL | pub extern "C" fn zero_size_phantom(p: ZeroSizeWithPhantomData) { }
    |                                        ^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -116,7 +100,7 @@ LL | pub struct ZeroSizeWithPhantomData(PhantomData<i32>);
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: `extern` fn uses type `PhantomData<bool>`, which is not FFI-safe
-  --> $DIR/lint-ctypes-fn.rs:110:51
+  --> $DIR/lint-ctypes-fn.rs:104:51
    |
 LL | pub extern "C" fn zero_size_phantom_toplevel() -> PhantomData<bool> {
    |                                                   ^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -124,7 +108,7 @@ LL | pub extern "C" fn zero_size_phantom_toplevel() -> PhantomData<bool> {
    = note: composed only of `PhantomData`
 
 error: `extern` fn uses type `fn()`, which is not FFI-safe
-  --> $DIR/lint-ctypes-fn.rs:115:30
+  --> $DIR/lint-ctypes-fn.rs:109:30
    |
 LL | pub extern "C" fn fn_type(p: RustFn) { }
    |                              ^^^^^^ not FFI-safe
@@ -133,7 +117,7 @@ LL | pub extern "C" fn fn_type(p: RustFn) { }
    = note: this function pointer has Rust-specific calling convention
 
 error: `extern` fn uses type `fn()`, which is not FFI-safe
-  --> $DIR/lint-ctypes-fn.rs:118:31
+  --> $DIR/lint-ctypes-fn.rs:112:31
    |
 LL | pub extern "C" fn fn_type2(p: fn()) { }
    |                               ^^^^ not FFI-safe
@@ -141,16 +125,8 @@ LL | pub extern "C" fn fn_type2(p: fn()) { }
    = help: consider using an `extern fn(...) -> ...` function pointer instead
    = note: this function pointer has Rust-specific calling convention
 
-error: `extern` fn uses type `i128`, which is not FFI-safe
-  --> $DIR/lint-ctypes-fn.rs:123:39
-   |
-LL | pub extern "C" fn transparent_i128(p: TransparentI128) { }
-   |                                       ^^^^^^^^^^^^^^^ not FFI-safe
-   |
-   = note: 128-bit integers don't currently have a known stable ABI
-
 error: `extern` fn uses type `str`, which is not FFI-safe
-  --> $DIR/lint-ctypes-fn.rs:126:38
+  --> $DIR/lint-ctypes-fn.rs:117:38
    |
 LL | pub extern "C" fn transparent_str(p: TransparentStr) { }
    |                                      ^^^^^^^^^^^^^^ not FFI-safe
@@ -159,7 +135,7 @@ LL | pub extern "C" fn transparent_str(p: TransparentStr) { }
    = note: string slices have no C equivalent
 
 error: `extern` fn uses type `PhantomData<bool>`, which is not FFI-safe
-  --> $DIR/lint-ctypes-fn.rs:172:43
+  --> $DIR/lint-ctypes-fn.rs:169:43
    |
 LL | pub extern "C" fn unused_generic2<T>() -> PhantomData<bool> {
    |                                           ^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -167,7 +143,7 @@ LL | pub extern "C" fn unused_generic2<T>() -> PhantomData<bool> {
    = note: composed only of `PhantomData`
 
 error: `extern` fn uses type `Vec<T>`, which is not FFI-safe
-  --> $DIR/lint-ctypes-fn.rs:185:39
+  --> $DIR/lint-ctypes-fn.rs:182:39
    |
 LL | pub extern "C" fn used_generic4<T>(x: Vec<T>) { }
    |                                       ^^^^^^ not FFI-safe
@@ -176,7 +152,7 @@ LL | pub extern "C" fn used_generic4<T>(x: Vec<T>) { }
    = note: this struct has unspecified layout
 
 error: `extern` fn uses type `Vec<T>`, which is not FFI-safe
-  --> $DIR/lint-ctypes-fn.rs:188:41
+  --> $DIR/lint-ctypes-fn.rs:185:41
    |
 LL | pub extern "C" fn used_generic5<T>() -> Vec<T> {
    |                                         ^^^^^^ not FFI-safe
@@ -184,5 +160,5 @@ LL | pub extern "C" fn used_generic5<T>() -> Vec<T> {
    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
    = note: this struct has unspecified layout
 
-error: aborting due to 20 previous errors
+error: aborting due to 17 previous errors
 
diff --git a/tests/ui/lint/lint-ctypes.rs b/tests/ui/lint/lint-ctypes.rs
index 6dd9be10a48..47586c826ab 100644
--- a/tests/ui/lint/lint-ctypes.rs
+++ b/tests/ui/lint/lint-ctypes.rs
@@ -54,8 +54,6 @@ extern "C" {
     pub fn opt_box_type(p: Option<Box<u32>>);
     //~^ ERROR uses type `Option<Box<u32>>`
     pub fn char_type(p: char); //~ ERROR uses type `char`
-    pub fn i128_type(p: i128); //~ ERROR uses type `i128`
-    pub fn u128_type(p: u128); //~ ERROR uses type `u128`
     pub fn trait_type(p: &dyn Bar); //~ ERROR uses type `dyn Bar`
     pub fn tuple_type(p: (i32, i32)); //~ ERROR uses type `(i32, i32)`
     pub fn tuple_type2(p: I32Pair); //~ ERROR uses type `(i32, i32)`
@@ -67,7 +65,6 @@ extern "C" {
     pub fn fn_type(p: RustFn); //~ ERROR uses type `fn()`
     pub fn fn_type2(p: fn()); //~ ERROR uses type `fn()`
     pub fn fn_contained(p: RustBadRet); //~ ERROR: uses type `Box<u32>`
-    pub fn transparent_i128(p: TransparentI128); //~ ERROR: uses type `i128`
     pub fn transparent_str(p: TransparentStr); //~ ERROR: uses type `str`
     pub fn transparent_fn(p: TransparentBadFn); //~ ERROR: uses type `Box<u32>`
     pub fn raw_array(arr: [u8; 8]); //~ ERROR: uses type `[u8; 8]`
@@ -77,9 +74,6 @@ extern "C" {
     pub fn no_niche_b(b: Option<UnsafeCell<&i32>>);
     //~^ ERROR: uses type `Option<UnsafeCell<&i32>>`
 
-    pub static static_u128_type: u128; //~ ERROR: uses type `u128`
-    pub static static_u128_array_type: [u128; 16]; //~ ERROR: uses type `u128`
-
     pub fn good3(fptr: Option<extern "C" fn()>);
     pub fn good4(aptr: &[u8; 4 as usize]);
     pub fn good5(s: StructWithProjection);
@@ -99,7 +93,11 @@ extern "C" {
     pub fn good18(_: &String);
     pub fn good20(arr: *const [u8; 8]);
     pub static good21: [u8; 8];
-
+    pub fn good_i128_type(p: i128);
+    pub fn good_u128_type(p: u128);
+    pub fn good_transparent_i128(p: TransparentI128);
+    pub static good_static_u128_type: u128;
+    pub static good_static_u128_array_type: [u128; 16];
 }
 
 #[allow(improper_ctypes)]
diff --git a/tests/ui/lint/lint-ctypes.stderr b/tests/ui/lint/lint-ctypes.stderr
index 8137ae868d3..3fb36647d4f 100644
--- a/tests/ui/lint/lint-ctypes.stderr
+++ b/tests/ui/lint/lint-ctypes.stderr
@@ -85,24 +85,8 @@ LL |     pub fn char_type(p: char);
    = help: consider using `u32` or `libc::wchar_t` instead
    = note: the `char` type has no C equivalent
 
-error: `extern` block uses type `i128`, which is not FFI-safe
-  --> $DIR/lint-ctypes.rs:57:25
-   |
-LL |     pub fn i128_type(p: i128);
-   |                         ^^^^ not FFI-safe
-   |
-   = note: 128-bit integers don't currently have a known stable ABI
-
-error: `extern` block uses type `u128`, which is not FFI-safe
-  --> $DIR/lint-ctypes.rs:58:25
-   |
-LL |     pub fn u128_type(p: u128);
-   |                         ^^^^ not FFI-safe
-   |
-   = note: 128-bit integers don't currently have a known stable ABI
-
 error: `extern` block uses type `dyn Bar`, which is not FFI-safe
-  --> $DIR/lint-ctypes.rs:59:26
+  --> $DIR/lint-ctypes.rs:57:26
    |
 LL |     pub fn trait_type(p: &dyn Bar);
    |                          ^^^^^^^^ not FFI-safe
@@ -110,7 +94,7 @@ LL |     pub fn trait_type(p: &dyn Bar);
    = note: trait objects have no C equivalent
 
 error: `extern` block uses type `(i32, i32)`, which is not FFI-safe
-  --> $DIR/lint-ctypes.rs:60:26
+  --> $DIR/lint-ctypes.rs:58:26
    |
 LL |     pub fn tuple_type(p: (i32, i32));
    |                          ^^^^^^^^^^ not FFI-safe
@@ -119,7 +103,7 @@ LL |     pub fn tuple_type(p: (i32, i32));
    = note: tuples have unspecified layout
 
 error: `extern` block uses type `(i32, i32)`, which is not FFI-safe
-  --> $DIR/lint-ctypes.rs:61:27
+  --> $DIR/lint-ctypes.rs:59:27
    |
 LL |     pub fn tuple_type2(p: I32Pair);
    |                           ^^^^^^^ not FFI-safe
@@ -128,7 +112,7 @@ LL |     pub fn tuple_type2(p: I32Pair);
    = note: tuples have unspecified layout
 
 error: `extern` block uses type `ZeroSize`, which is not FFI-safe
-  --> $DIR/lint-ctypes.rs:62:25
+  --> $DIR/lint-ctypes.rs:60:25
    |
 LL |     pub fn zero_size(p: ZeroSize);
    |                         ^^^^^^^^ not FFI-safe
@@ -142,7 +126,7 @@ LL | pub struct ZeroSize;
    | ^^^^^^^^^^^^^^^^^^^
 
 error: `extern` block uses type `ZeroSizeWithPhantomData`, which is not FFI-safe
-  --> $DIR/lint-ctypes.rs:63:33
+  --> $DIR/lint-ctypes.rs:61:33
    |
 LL |     pub fn zero_size_phantom(p: ZeroSizeWithPhantomData);
    |                                 ^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -155,7 +139,7 @@ LL | pub struct ZeroSizeWithPhantomData(::std::marker::PhantomData<i32>);
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: `extern` block uses type `PhantomData<bool>`, which is not FFI-safe
-  --> $DIR/lint-ctypes.rs:66:12
+  --> $DIR/lint-ctypes.rs:64:12
    |
 LL |         -> ::std::marker::PhantomData<bool>;
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -163,7 +147,7 @@ LL |         -> ::std::marker::PhantomData<bool>;
    = note: composed only of `PhantomData`
 
 error: `extern` block uses type `fn()`, which is not FFI-safe
-  --> $DIR/lint-ctypes.rs:67:23
+  --> $DIR/lint-ctypes.rs:65:23
    |
 LL |     pub fn fn_type(p: RustFn);
    |                       ^^^^^^ not FFI-safe
@@ -172,7 +156,7 @@ LL |     pub fn fn_type(p: RustFn);
    = note: this function pointer has Rust-specific calling convention
 
 error: `extern` block uses type `fn()`, which is not FFI-safe
-  --> $DIR/lint-ctypes.rs:68:24
+  --> $DIR/lint-ctypes.rs:66:24
    |
 LL |     pub fn fn_type2(p: fn());
    |                        ^^^^ not FFI-safe
@@ -181,7 +165,7 @@ LL |     pub fn fn_type2(p: fn());
    = note: this function pointer has Rust-specific calling convention
 
 error: `extern` block uses type `Box<u32>`, which is not FFI-safe
-  --> $DIR/lint-ctypes.rs:69:28
+  --> $DIR/lint-ctypes.rs:67:28
    |
 LL |     pub fn fn_contained(p: RustBadRet);
    |                            ^^^^^^^^^^ not FFI-safe
@@ -189,16 +173,8 @@ LL |     pub fn fn_contained(p: RustBadRet);
    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
    = note: this struct has unspecified layout
 
-error: `extern` block uses type `i128`, which is not FFI-safe
-  --> $DIR/lint-ctypes.rs:70:32
-   |
-LL |     pub fn transparent_i128(p: TransparentI128);
-   |                                ^^^^^^^^^^^^^^^ not FFI-safe
-   |
-   = note: 128-bit integers don't currently have a known stable ABI
-
 error: `extern` block uses type `str`, which is not FFI-safe
-  --> $DIR/lint-ctypes.rs:71:31
+  --> $DIR/lint-ctypes.rs:68:31
    |
 LL |     pub fn transparent_str(p: TransparentStr);
    |                               ^^^^^^^^^^^^^^ not FFI-safe
@@ -207,7 +183,7 @@ LL |     pub fn transparent_str(p: TransparentStr);
    = note: string slices have no C equivalent
 
 error: `extern` block uses type `Box<u32>`, which is not FFI-safe
-  --> $DIR/lint-ctypes.rs:72:30
+  --> $DIR/lint-ctypes.rs:69:30
    |
 LL |     pub fn transparent_fn(p: TransparentBadFn);
    |                              ^^^^^^^^^^^^^^^^ not FFI-safe
@@ -216,7 +192,7 @@ LL |     pub fn transparent_fn(p: TransparentBadFn);
    = note: this struct has unspecified layout
 
 error: `extern` block uses type `[u8; 8]`, which is not FFI-safe
-  --> $DIR/lint-ctypes.rs:73:27
+  --> $DIR/lint-ctypes.rs:70:27
    |
 LL |     pub fn raw_array(arr: [u8; 8]);
    |                           ^^^^^^^ not FFI-safe
@@ -225,7 +201,7 @@ LL |     pub fn raw_array(arr: [u8; 8]);
    = note: passing raw arrays by value is not FFI-safe
 
 error: `extern` block uses type `Option<UnsafeCell<extern "C" fn()>>`, which is not FFI-safe
-  --> $DIR/lint-ctypes.rs:75:26
+  --> $DIR/lint-ctypes.rs:72:26
    |
 LL |     pub fn no_niche_a(a: Option<UnsafeCell<extern "C" fn()>>);
    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -234,7 +210,7 @@ LL |     pub fn no_niche_a(a: Option<UnsafeCell<extern "C" fn()>>);
    = note: enum has no representation hint
 
 error: `extern` block uses type `Option<UnsafeCell<&i32>>`, which is not FFI-safe
-  --> $DIR/lint-ctypes.rs:77:26
+  --> $DIR/lint-ctypes.rs:74:26
    |
 LL |     pub fn no_niche_b(b: Option<UnsafeCell<&i32>>);
    |                          ^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -242,21 +218,5 @@ LL |     pub fn no_niche_b(b: Option<UnsafeCell<&i32>>);
    = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
    = note: enum has no representation hint
 
-error: `extern` block uses type `u128`, which is not FFI-safe
-  --> $DIR/lint-ctypes.rs:80:34
-   |
-LL |     pub static static_u128_type: u128;
-   |                                  ^^^^ not FFI-safe
-   |
-   = note: 128-bit integers don't currently have a known stable ABI
-
-error: `extern` block uses type `u128`, which is not FFI-safe
-  --> $DIR/lint-ctypes.rs:81:40
-   |
-LL |     pub static static_u128_array_type: [u128; 16];
-   |                                        ^^^^^^^^^^ not FFI-safe
-   |
-   = note: 128-bit integers don't currently have a known stable ABI
-
-error: aborting due to 27 previous errors
+error: aborting due to 22 previous errors
 
diff --git a/tests/ui/lint/lint-directives-on-use-items-issue-10534.rs b/tests/ui/lint/lint-directives-on-use-items-issue-10534.rs
index e5cb0d3df0e..55ecb564beb 100644
--- a/tests/ui/lint/lint-directives-on-use-items-issue-10534.rs
+++ b/tests/ui/lint/lint-directives-on-use-items-issue-10534.rs
@@ -9,16 +9,16 @@
 mod a { pub static x: isize = 3; pub static y: isize = 4; }
 
 mod b {
-    use a::x; //~ ERROR: unused import
+    use crate::a::x; //~ ERROR: unused import
     #[allow(unused_imports)]
-    use a::y; // no error here
+    use crate::a::y; // no error here
 }
 
 #[allow(unused_imports)]
 mod c {
-    use a::x;
+    use crate::a::x;
     #[deny(unused_imports)]
-    use a::y; //~ ERROR: unused import
+    use crate::a::y; //~ ERROR: unused import
 }
 
 fn main() {}
diff --git a/tests/ui/lint/lint-directives-on-use-items-issue-10534.stderr b/tests/ui/lint/lint-directives-on-use-items-issue-10534.stderr
index ccb139e0ed6..c394d1e7932 100644
--- a/tests/ui/lint/lint-directives-on-use-items-issue-10534.stderr
+++ b/tests/ui/lint/lint-directives-on-use-items-issue-10534.stderr
@@ -1,8 +1,8 @@
-error: unused import: `a::x`
+error: unused import: `crate::a::x`
   --> $DIR/lint-directives-on-use-items-issue-10534.rs:12:9
    |
-LL |     use a::x;
-   |         ^^^^
+LL |     use crate::a::x;
+   |         ^^^^^^^^^^^
    |
 note: the lint level is defined here
   --> $DIR/lint-directives-on-use-items-issue-10534.rs:1:9
@@ -10,11 +10,11 @@ note: the lint level is defined here
 LL | #![deny(unused_imports)]
    |         ^^^^^^^^^^^^^^
 
-error: unused import: `a::y`
+error: unused import: `crate::a::y`
   --> $DIR/lint-directives-on-use-items-issue-10534.rs:21:9
    |
-LL |     use a::y;
-   |         ^^^^
+LL |     use crate::a::y;
+   |         ^^^^^^^^^^^
    |
 note: the lint level is defined here
   --> $DIR/lint-directives-on-use-items-issue-10534.rs:20:12
diff --git a/tests/ui/lint/lint-missing-doc.rs b/tests/ui/lint/lint-missing-doc.rs
index 0b7c99e5012..b8655994fc2 100644
--- a/tests/ui/lint/lint-missing-doc.rs
+++ b/tests/ui/lint/lint-missing-doc.rs
@@ -184,10 +184,10 @@ mod internal_impl {
 }
 /// dox
 pub mod public_interface {
-    pub use internal_impl::documented as foo;
-    pub use internal_impl::undocumented1 as bar;
-    pub use internal_impl::{documented, undocumented2};
-    pub use internal_impl::globbed::*;
+    pub use crate::internal_impl::documented as foo;
+    pub use crate::internal_impl::undocumented1 as bar;
+    pub use crate::internal_impl::{documented, undocumented2};
+    pub use crate::internal_impl::globbed::*;
 }
 
 extern "C" {
diff --git a/tests/ui/lint/lint-pre-expansion-extern-module.rs b/tests/ui/lint/lint-pre-expansion-extern-module.rs
index f1ab0cf3b74..e85261befbc 100644
--- a/tests/ui/lint/lint-pre-expansion-extern-module.rs
+++ b/tests/ui/lint/lint-pre-expansion-extern-module.rs
@@ -1,5 +1,6 @@
 //@ check-pass
 //@ compile-flags: -W rust-2018-compatibility
+//@ edition: 2015
 
 fn main() {}
 
diff --git a/tests/ui/lint/lint-qualification.fixed b/tests/ui/lint/lint-qualification.fixed
index 7c8fd5236e6..04067b6b6ff 100644
--- a/tests/ui/lint/lint-qualification.fixed
+++ b/tests/ui/lint/lint-qualification.fixed
@@ -1,3 +1,4 @@
+//@ edition: 2015
 //@ run-rustfix
 #![deny(unused_qualifications)]
 #![deny(unused_imports)]
diff --git a/tests/ui/lint/lint-qualification.rs b/tests/ui/lint/lint-qualification.rs
index 009b3080d5c..20c261bf878 100644
--- a/tests/ui/lint/lint-qualification.rs
+++ b/tests/ui/lint/lint-qualification.rs
@@ -1,3 +1,4 @@
+//@ edition: 2015
 //@ run-rustfix
 #![deny(unused_qualifications)]
 #![deny(unused_imports)]
diff --git a/tests/ui/lint/lint-qualification.stderr b/tests/ui/lint/lint-qualification.stderr
index cefa54a12ae..1e8b8da1e86 100644
--- a/tests/ui/lint/lint-qualification.stderr
+++ b/tests/ui/lint/lint-qualification.stderr
@@ -1,11 +1,11 @@
 error: unnecessary qualification
-  --> $DIR/lint-qualification.rs:12:5
+  --> $DIR/lint-qualification.rs:13:5
    |
 LL |     foo::bar();
    |     ^^^^^^^^
    |
 note: the lint level is defined here
-  --> $DIR/lint-qualification.rs:2:9
+  --> $DIR/lint-qualification.rs:3:9
    |
 LL | #![deny(unused_qualifications)]
    |         ^^^^^^^^^^^^^^^^^^^^^
@@ -16,7 +16,7 @@ LL +     bar();
    |
 
 error: unnecessary qualification
-  --> $DIR/lint-qualification.rs:13:5
+  --> $DIR/lint-qualification.rs:14:5
    |
 LL |     crate::foo::bar();
    |     ^^^^^^^^^^^^^^^
@@ -28,7 +28,7 @@ LL +     bar();
    |
 
 error: unnecessary qualification
-  --> $DIR/lint-qualification.rs:18:13
+  --> $DIR/lint-qualification.rs:19:13
    |
 LL |     let _ = std::string::String::new();
    |             ^^^^^^^^^^^^^^^^^^^^^^^^
@@ -40,7 +40,7 @@ LL +     let _ = String::new();
    |
 
 error: unnecessary qualification
-  --> $DIR/lint-qualification.rs:20:12
+  --> $DIR/lint-qualification.rs:21:12
    |
 LL |     let _: std::vec::Vec<String> = std::vec::Vec::<String>::new();
    |            ^^^^^^^^^^^^^^^^^^^^^
@@ -52,7 +52,7 @@ LL +     let _: Vec<String> = std::vec::Vec::<String>::new();
    |
 
 error: unnecessary qualification
-  --> $DIR/lint-qualification.rs:20:36
+  --> $DIR/lint-qualification.rs:21:36
    |
 LL |     let _: std::vec::Vec<String> = std::vec::Vec::<String>::new();
    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -64,19 +64,19 @@ LL +     let _: std::vec::Vec<String> = Vec::<String>::new();
    |
 
 error: unused import: `std::fmt`
-  --> $DIR/lint-qualification.rs:24:9
+  --> $DIR/lint-qualification.rs:25:9
    |
 LL |     use std::fmt;
    |         ^^^^^^^^
    |
 note: the lint level is defined here
-  --> $DIR/lint-qualification.rs:3:9
+  --> $DIR/lint-qualification.rs:4:9
    |
 LL | #![deny(unused_imports)]
    |         ^^^^^^^^^^^^^^
 
 error: unnecessary qualification
-  --> $DIR/lint-qualification.rs:29:13
+  --> $DIR/lint-qualification.rs:30:13
    |
 LL |     let _ = <bool as std::default::Default>::default(); // issue #121999 (modified)
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/tests/ui/lint/lint-unnecessary-import-braces.rs b/tests/ui/lint/lint-unnecessary-import-braces.rs
index 9a3398a8734..a9c8da85a22 100644
--- a/tests/ui/lint/lint-unnecessary-import-braces.rs
+++ b/tests/ui/lint/lint-unnecessary-import-braces.rs
@@ -1,10 +1,10 @@
 #![deny(unused_import_braces)]
 
-use test::{A}; //~ ERROR braces around A is unnecessary
+use crate::test::{A}; //~ ERROR braces around A is unnecessary
 
 mod test {
-    use test::{self}; // OK
-    use test::{self as rename}; // OK
+    use crate::test::{self}; // OK
+    use crate::test::{self as rename}; // OK
     pub struct A;
 }
 
diff --git a/tests/ui/lint/lint-unnecessary-import-braces.stderr b/tests/ui/lint/lint-unnecessary-import-braces.stderr
index 5f441ef4a66..dc470551cd4 100644
--- a/tests/ui/lint/lint-unnecessary-import-braces.stderr
+++ b/tests/ui/lint/lint-unnecessary-import-braces.stderr
@@ -1,8 +1,8 @@
 error: braces around A is unnecessary
   --> $DIR/lint-unnecessary-import-braces.rs:3:1
    |
-LL | use test::{A};
-   | ^^^^^^^^^^^^^^
+LL | use crate::test::{A};
+   | ^^^^^^^^^^^^^^^^^^^^^
    |
 note: the lint level is defined here
   --> $DIR/lint-unnecessary-import-braces.rs:1:9
diff --git a/tests/ui/lint/unused/lint-unused-imports.rs b/tests/ui/lint/unused/lint-unused-imports.rs
index 710fb7a5ed1..d09a84b59a3 100644
--- a/tests/ui/lint/unused/lint-unused-imports.rs
+++ b/tests/ui/lint/unused/lint-unused-imports.rs
@@ -48,8 +48,8 @@ pub mod bar {
     pub struct Square;
 
     pub mod c {
-        use foo::Point;
-        use foo::Square; //~ ERROR unused import: `foo::Square`
+        use crate::foo::Point;
+        use crate::foo::Square; //~ ERROR unused import: `crate::foo::Square`
         pub fn cc(_p: Point) -> super::Square {
             fn f() -> super::Square {
                 super::Square
@@ -74,7 +74,7 @@ fn g() {
 // cf. issue #35135.
 #[allow(unused_variables)]
 fn h() {
-    use test2::foo; //~ ERROR unused import: `test2::foo`
+    use crate::test2::foo; //~ ERROR unused import: `crate::test2::foo`
     let foo = 0;
 }
 
@@ -83,6 +83,6 @@ fn main() {
     let mut a = 3;
     let mut b = 4;
     swap(&mut a, &mut b);
-    test::C.b();
+    crate::test::C.b();
     foo();
 }
diff --git a/tests/ui/lint/unused/lint-unused-imports.stderr b/tests/ui/lint/unused/lint-unused-imports.stderr
index a848fb31eba..750bc059de0 100644
--- a/tests/ui/lint/unused/lint-unused-imports.stderr
+++ b/tests/ui/lint/unused/lint-unused-imports.stderr
@@ -28,11 +28,11 @@ error: unused import: `bar`
 LL | use test2::{foo, bar};
    |                  ^^^
 
-error: unused import: `foo::Square`
+error: unused import: `crate::foo::Square`
   --> $DIR/lint-unused-imports.rs:52:13
    |
-LL |         use foo::Square;
-   |             ^^^^^^^^^^^
+LL |         use crate::foo::Square;
+   |             ^^^^^^^^^^^^^^^^^^
 
 error: unused import: `self::g`
   --> $DIR/lint-unused-imports.rs:68:9
@@ -40,11 +40,11 @@ error: unused import: `self::g`
 LL |     use self::g;
    |         ^^^^^^^
 
-error: unused import: `test2::foo`
+error: unused import: `crate::test2::foo`
   --> $DIR/lint-unused-imports.rs:77:9
    |
-LL |     use test2::foo;
-   |         ^^^^^^^^^^
+LL |     use crate::test2::foo;
+   |         ^^^^^^^^^^^^^^^^^
 
 error: unused import: `test::B2`
   --> $DIR/lint-unused-imports.rs:20:5
diff --git a/tests/ui/lint/use-redundant/use-redundant-prelude-rust-2015.rs b/tests/ui/lint/use-redundant/use-redundant-prelude-rust-2015.rs
index 6abe3602abe..7dc9ba0afea 100644
--- a/tests/ui/lint/use-redundant/use-redundant-prelude-rust-2015.rs
+++ b/tests/ui/lint/use-redundant/use-redundant-prelude-rust-2015.rs
@@ -1,3 +1,4 @@
+//@ edition: 2015
 //@ check-pass
 #![warn(redundant_imports)]
 
diff --git a/tests/ui/lint/use-redundant/use-redundant-prelude-rust-2015.stderr b/tests/ui/lint/use-redundant/use-redundant-prelude-rust-2015.stderr
index 2b0e16a87dc..48d5c275055 100644
--- a/tests/ui/lint/use-redundant/use-redundant-prelude-rust-2015.stderr
+++ b/tests/ui/lint/use-redundant/use-redundant-prelude-rust-2015.stderr
@@ -1,5 +1,5 @@
 warning: the item `Some` is imported redundantly
-  --> $DIR/use-redundant-prelude-rust-2015.rs:5:5
+  --> $DIR/use-redundant-prelude-rust-2015.rs:6:5
    |
 LL | use std::option::Option::Some;
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -8,13 +8,13 @@ LL | use std::option::Option::Some;
    = note: the item `Some` is already defined here
    |
 note: the lint level is defined here
-  --> $DIR/use-redundant-prelude-rust-2015.rs:2:9
+  --> $DIR/use-redundant-prelude-rust-2015.rs:3:9
    |
 LL | #![warn(redundant_imports)]
    |         ^^^^^^^^^^^^^^^^^
 
 warning: the item `None` is imported redundantly
-  --> $DIR/use-redundant-prelude-rust-2015.rs:6:5
+  --> $DIR/use-redundant-prelude-rust-2015.rs:7:5
    |
 LL | use std::option::Option::None;
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -23,7 +23,7 @@ LL | use std::option::Option::None;
    = note: the item `None` is already defined here
 
 warning: the item `Ok` is imported redundantly
-  --> $DIR/use-redundant-prelude-rust-2015.rs:8:5
+  --> $DIR/use-redundant-prelude-rust-2015.rs:9:5
    |
 LL | use std::result::Result::Ok;
    |     ^^^^^^^^^^^^^^^^^^^^^^^
@@ -32,7 +32,7 @@ LL | use std::result::Result::Ok;
    = note: the item `Ok` is already defined here
 
 warning: the item `Err` is imported redundantly
-  --> $DIR/use-redundant-prelude-rust-2015.rs:9:5
+  --> $DIR/use-redundant-prelude-rust-2015.rs:10:5
    |
 LL | use std::result::Result::Err;
    |     ^^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/tests/ui/macros/macro-pub-matcher.rs b/tests/ui/macros/macro-pub-matcher.rs
index 538f55cc98d..e0b03dbbeb1 100644
--- a/tests/ui/macros/macro-pub-matcher.rs
+++ b/tests/ui/macros/macro-pub-matcher.rs
@@ -68,15 +68,15 @@ mod with_crate {
 
 mod garden {
     mod with_pub_restricted_path {
-        vis_passthru! { pub(in garden) const A: i32 = 0; }
-        vis_passthru! { pub(in garden) enum B {} }
-        vis_passthru! { pub(in garden) extern "C" fn c() {} }
-        vis_passthru! { pub(in garden) mod d {} }
-        vis_passthru! { pub(in garden) static E: i32 = 0; }
-        vis_passthru! { pub(in garden) struct F; }
-        vis_passthru! { pub(in garden) trait G {} }
-        vis_passthru! { pub(in garden) type H = i32; }
-        vis_passthru! { pub(in garden) use A as I; }
+        vis_passthru! { pub(in crate::garden) const A: i32 = 0; }
+        vis_passthru! { pub(in crate::garden) enum B {} }
+        vis_passthru! { pub(in crate::garden) extern "C" fn c() {} }
+        vis_passthru! { pub(in crate::garden) mod d {} }
+        vis_passthru! { pub(in crate::garden) static E: i32 = 0; }
+        vis_passthru! { pub(in crate::garden) struct F; }
+        vis_passthru! { pub(in crate::garden) trait G {} }
+        vis_passthru! { pub(in crate::garden) type H = i32; }
+        vis_passthru! { pub(in crate::garden) use A as I; }
     }
 }
 
diff --git a/tests/ui/macros/paths-in-macro-invocations.rs b/tests/ui/macros/paths-in-macro-invocations.rs
index c1b7789d6de..b8f4784298d 100644
--- a/tests/ui/macros/paths-in-macro-invocations.rs
+++ b/tests/ui/macros/paths-in-macro-invocations.rs
@@ -11,26 +11,26 @@ mod foo { pub use two_macros::macro_one as bar; }
 
 trait T {
     foo::bar!();
-    ::foo::bar!();
+    crate::foo::bar!();
 }
 
 struct S {
     x: foo::bar!(i32),
-    y: ::foo::bar!(i32),
+    y: crate::foo::bar!(i32),
 }
 
 impl S {
     foo::bar!();
-    ::foo::bar!();
+    crate::foo::bar!();
 }
 
 fn main() {
     foo::bar!();
-    ::foo::bar!();
+    crate::foo::bar!();
 
     let _ = foo::bar!(0);
-    let _ = ::foo::bar!(0);
+    let _ = crate::foo::bar!(0);
 
     let foo::bar!(_) = 0;
-    let ::foo::bar!(_) = 0;
+    let crate::foo::bar!(_) = 0;
 }
diff --git a/tests/ui/macros/return_from_external_macro.rs b/tests/ui/macros/return_from_external_macro.rs
index 43fe99e63ad..91d0c4c64fd 100644
--- a/tests/ui/macros/return_from_external_macro.rs
+++ b/tests/ui/macros/return_from_external_macro.rs
@@ -5,7 +5,7 @@ extern crate ret_from_ext;
 
 fn foo() -> impl Sized {
     drop(|| ret_from_ext::foo!());
-    //~^ ERROR cannot return reference to local binding
+    //~^ ERROR cannot return reference to temporary value
 
     ret_from_ext::foo!()
     //~^ ERROR temporary value dropped while borrowed
diff --git a/tests/ui/macros/return_from_external_macro.stderr b/tests/ui/macros/return_from_external_macro.stderr
index b6010b8ec79..6f707b9f52b 100644
--- a/tests/ui/macros/return_from_external_macro.stderr
+++ b/tests/ui/macros/return_from_external_macro.stderr
@@ -1,11 +1,11 @@
-error[E0515]: cannot return reference to local binding
+error[E0515]: cannot return reference to temporary value
   --> $DIR/return_from_external_macro.rs:7:13
    |
 LL |     drop(|| ret_from_ext::foo!());
    |             ^^^^^^^^^^^^^^^^^^^^
    |             |
    |             returns a reference to data owned by the current function
-   |             local binding introduced here
+   |             temporary value created here
    |
    = note: this error originates in the macro `ret_from_ext::foo` (in Nightly builds, run with -Z macro-backtrace for more info)
 
diff --git a/tests/ui/macros/try-macro.rs b/tests/ui/macros/try-macro.rs
index b579143583e..f6268654cfc 100644
--- a/tests/ui/macros/try-macro.rs
+++ b/tests/ui/macros/try-macro.rs
@@ -1,4 +1,5 @@
 //@ run-pass
+//@ edition: 2015
 #![allow(deprecated)] // for deprecated `try!()` macro
 use std::num::{ParseFloatError, ParseIntError};
 
diff --git a/tests/ui/moves/issue-34721.fixed b/tests/ui/moves/issue-34721.fixed
index 995fd920da7..4fdbee4d60b 100644
--- a/tests/ui/moves/issue-34721.fixed
+++ b/tests/ui/moves/issue-34721.fixed
@@ -9,15 +9,15 @@ impl Foo for u32 {
 }
 
 pub mod bar {
-    pub use Foo;
+    pub use crate::Foo;
     pub fn bar<T: Foo>(x: T) -> T {
       x.zero()
     }
 }
 
 mod baz {
-    use bar;
-    use Foo;
+    use crate::bar;
+    use crate::Foo;
     pub fn baz<T: Foo + Copy>(x: T) -> T {
         if 0 == 1 {
             bar::bar(x.zero())
diff --git a/tests/ui/moves/issue-34721.rs b/tests/ui/moves/issue-34721.rs
index 747b15b4e02..4591b545b23 100644
--- a/tests/ui/moves/issue-34721.rs
+++ b/tests/ui/moves/issue-34721.rs
@@ -9,15 +9,15 @@ impl Foo for u32 {
 }
 
 pub mod bar {
-    pub use Foo;
+    pub use crate::Foo;
     pub fn bar<T: Foo>(x: T) -> T {
       x.zero()
     }
 }
 
 mod baz {
-    use bar;
-    use Foo;
+    use crate::bar;
+    use crate::Foo;
     pub fn baz<T: Foo>(x: T) -> T {
         if 0 == 1 {
             bar::bar(x.zero())
diff --git a/tests/ui/namespace/namespaced-enum-glob-import-no-impls.rs b/tests/ui/namespace/namespaced-enum-glob-import-no-impls.rs
index ab24f36f9a1..1586dd8bd59 100644
--- a/tests/ui/namespace/namespaced-enum-glob-import-no-impls.rs
+++ b/tests/ui/namespace/namespaced-enum-glob-import-no-impls.rs
@@ -12,11 +12,11 @@ mod m2 {
 }
 
 mod m {
-    pub use m2::Foo::*;
+    pub use crate::m2::Foo::*;
 }
 
 pub fn main() {
-    use m2::Foo::*;
+    use crate::m2::Foo::*;
 
     foo(); //~ ERROR cannot find function `foo` in this scope
     m::foo(); //~ ERROR cannot find function `foo` in module `m`
diff --git a/tests/ui/never_type/feature-gate-never_type_fallback.stderr b/tests/ui/never_type/feature-gate-never_type_fallback.stderr
index cbb670ea708..8dbd43e121b 100644
--- a/tests/ui/never_type/feature-gate-never_type_fallback.stderr
+++ b/tests/ui/never_type/feature-gate-never_type_fallback.stderr
@@ -2,10 +2,8 @@ error[E0277]: the trait bound `(): T` is not satisfied
   --> $DIR/feature-gate-never_type_fallback.rs:10:9
    |
 LL |     foo(panic!())
-   |     --- ^^^^^^^^
-   |     |   |
-   |     |   the trait `T` is not implemented for `()`
-   |     |   this tail expression is of type `()`
+   |     --- ^^^^^^^^ the trait `T` is not implemented for `()`
+   |     |
    |     required by a bound introduced by this call
    |
 help: this trait has no implementations, consider adding one
diff --git a/tests/ui/parser/dyn-trait-compatibility.rs b/tests/ui/parser/dyn-trait-compatibility.rs
index 717b14c5941..c6e84284fbe 100644
--- a/tests/ui/parser/dyn-trait-compatibility.rs
+++ b/tests/ui/parser/dyn-trait-compatibility.rs
@@ -1,3 +1,5 @@
+//@ edition: 2015
+
 type A0 = dyn;
 //~^ ERROR cannot find type `dyn` in this scope
 type A1 = dyn::dyn;
diff --git a/tests/ui/parser/dyn-trait-compatibility.stderr b/tests/ui/parser/dyn-trait-compatibility.stderr
index 08e0a50010a..a57c033c1e1 100644
--- a/tests/ui/parser/dyn-trait-compatibility.stderr
+++ b/tests/ui/parser/dyn-trait-compatibility.stderr
@@ -1,47 +1,47 @@
 error[E0412]: cannot find type `dyn` in this scope
-  --> $DIR/dyn-trait-compatibility.rs:1:11
+  --> $DIR/dyn-trait-compatibility.rs:3:11
    |
 LL | type A0 = dyn;
    |           ^^^ not found in this scope
 
 error[E0412]: cannot find type `dyn` in this scope
-  --> $DIR/dyn-trait-compatibility.rs:5:11
+  --> $DIR/dyn-trait-compatibility.rs:7:11
    |
 LL | type A2 = dyn<dyn, dyn>;
    |           ^^^ not found in this scope
 
 error[E0412]: cannot find type `dyn` in this scope
-  --> $DIR/dyn-trait-compatibility.rs:5:15
+  --> $DIR/dyn-trait-compatibility.rs:7:15
    |
 LL | type A2 = dyn<dyn, dyn>;
    |               ^^^ not found in this scope
 
 error[E0412]: cannot find type `dyn` in this scope
-  --> $DIR/dyn-trait-compatibility.rs:5:20
+  --> $DIR/dyn-trait-compatibility.rs:7:20
    |
 LL | type A2 = dyn<dyn, dyn>;
    |                    ^^^ not found in this scope
 
 error[E0412]: cannot find type `dyn` in this scope
-  --> $DIR/dyn-trait-compatibility.rs:9:11
+  --> $DIR/dyn-trait-compatibility.rs:11:11
    |
 LL | type A3 = dyn<<dyn as dyn>::dyn>;
    |           ^^^ not found in this scope
 
 error[E0405]: cannot find trait `dyn` in this scope
-  --> $DIR/dyn-trait-compatibility.rs:9:23
+  --> $DIR/dyn-trait-compatibility.rs:11:23
    |
 LL | type A3 = dyn<<dyn as dyn>::dyn>;
    |                       ^^^ not found in this scope
 
 error[E0412]: cannot find type `dyn` in this scope
-  --> $DIR/dyn-trait-compatibility.rs:9:16
+  --> $DIR/dyn-trait-compatibility.rs:11:16
    |
 LL | type A3 = dyn<<dyn as dyn>::dyn>;
    |                ^^^ not found in this scope
 
 error[E0433]: failed to resolve: use of unresolved module or unlinked crate `dyn`
-  --> $DIR/dyn-trait-compatibility.rs:3:11
+  --> $DIR/dyn-trait-compatibility.rs:5:11
    |
 LL | type A1 = dyn::dyn;
    |           ^^^ use of unresolved module or unlinked crate `dyn`
diff --git a/tests/ui/parser/extern-crate-async.rs b/tests/ui/parser/extern-crate-async.rs
index 529e0f1ab5c..13bd786d092 100644
--- a/tests/ui/parser/extern-crate-async.rs
+++ b/tests/ui/parser/extern-crate-async.rs
@@ -1,6 +1,7 @@
-// Make sure that we don't parse `extern crate async`
+// Make sure that we don't parse `extern crate async` as
 // the front matter of a function leading us astray.
 
+//@ edition: 2015
 //@ check-pass
 
 fn main() {}
diff --git a/tests/ui/parser/fn-field-parse-error-ice.rs b/tests/ui/parser/fn-field-parse-error-ice.rs
index 188257ea53a..f1bc561b89f 100644
--- a/tests/ui/parser/fn-field-parse-error-ice.rs
+++ b/tests/ui/parser/fn-field-parse-error-ice.rs
@@ -1,4 +1,5 @@
 // Regression test for #85794
+//@ edition: 2015
 
 struct Baz {
     inner : dyn fn ()
diff --git a/tests/ui/parser/fn-field-parse-error-ice.stderr b/tests/ui/parser/fn-field-parse-error-ice.stderr
index 3bf68e8cc04..6f033e2b0c6 100644
--- a/tests/ui/parser/fn-field-parse-error-ice.stderr
+++ b/tests/ui/parser/fn-field-parse-error-ice.stderr
@@ -1,11 +1,11 @@
 error: expected `,`, or `}`, found keyword `fn`
-  --> $DIR/fn-field-parse-error-ice.rs:4:16
+  --> $DIR/fn-field-parse-error-ice.rs:5:16
    |
 LL |     inner : dyn fn ()
    |                ^ help: try adding a comma: `,`
 
 error: expected identifier, found keyword `fn`
-  --> $DIR/fn-field-parse-error-ice.rs:4:17
+  --> $DIR/fn-field-parse-error-ice.rs:5:17
    |
 LL | struct Baz {
    |        --- while parsing this struct
@@ -18,7 +18,7 @@ LL |     inner : dyn r#fn ()
    |                 ++
 
 error[E0412]: cannot find type `dyn` in this scope
-  --> $DIR/fn-field-parse-error-ice.rs:4:13
+  --> $DIR/fn-field-parse-error-ice.rs:5:13
    |
 LL |     inner : dyn fn ()
    |             ^^^ not found in this scope
diff --git a/tests/ui/parser/issues/issue-114219.rs b/tests/ui/parser/issues/issue-114219.rs
index 332258b628c..3f7e0f685ac 100644
--- a/tests/ui/parser/issues/issue-114219.rs
+++ b/tests/ui/parser/issues/issue-114219.rs
@@ -1,3 +1,5 @@
+//@ edition: 2015
+
 fn main() {
     async move {};
     //~^ ERROR `async move` blocks are only allowed in Rust 2018 or later
diff --git a/tests/ui/parser/issues/issue-114219.stderr b/tests/ui/parser/issues/issue-114219.stderr
index 02323cb99cb..1243ef8b180 100644
--- a/tests/ui/parser/issues/issue-114219.stderr
+++ b/tests/ui/parser/issues/issue-114219.stderr
@@ -1,5 +1,5 @@
 error: `async move` blocks are only allowed in Rust 2018 or later
-  --> $DIR/issue-114219.rs:2:5
+  --> $DIR/issue-114219.rs:4:5
    |
 LL |     async move {};
    |     ^^^^^^^^^^
diff --git a/tests/ui/parser/recover-hrtb-before-dyn-impl-kw.rs b/tests/ui/parser/recover-hrtb-before-dyn-impl-kw.rs
index b9e3c5783eb..b78832bbe3d 100644
--- a/tests/ui/parser/recover-hrtb-before-dyn-impl-kw.rs
+++ b/tests/ui/parser/recover-hrtb-before-dyn-impl-kw.rs
@@ -1,3 +1,5 @@
+//@ edition: 2015
+
 trait Trait {}
 
 fn test(_: &for<'a> dyn Trait) {}
diff --git a/tests/ui/parser/recover-hrtb-before-dyn-impl-kw.stderr b/tests/ui/parser/recover-hrtb-before-dyn-impl-kw.stderr
index a012220e8c7..3745cf8b077 100644
--- a/tests/ui/parser/recover-hrtb-before-dyn-impl-kw.stderr
+++ b/tests/ui/parser/recover-hrtb-before-dyn-impl-kw.stderr
@@ -1,5 +1,5 @@
 error: `for<...>` expected after `dyn`, not before
-  --> $DIR/recover-hrtb-before-dyn-impl-kw.rs:3:21
+  --> $DIR/recover-hrtb-before-dyn-impl-kw.rs:5:21
    |
 LL | fn test(_: &for<'a> dyn Trait) {}
    |                     ^^^
@@ -11,7 +11,7 @@ LL + fn test(_: &dyn for<'a> Trait) {}
    |
 
 error: `for<...>` expected after `impl`, not before
-  --> $DIR/recover-hrtb-before-dyn-impl-kw.rs:6:21
+  --> $DIR/recover-hrtb-before-dyn-impl-kw.rs:8:21
    |
 LL | fn test2(_: for<'a> impl Trait) {}
    |                     ^^^^
@@ -23,7 +23,7 @@ LL + fn test2(_: impl for<'a> Trait) {}
    |
 
 error: expected identifier, found `>`
-  --> $DIR/recover-hrtb-before-dyn-impl-kw.rs:10:24
+  --> $DIR/recover-hrtb-before-dyn-impl-kw.rs:12:24
    |
 LL | type A2 = dyn<for<> dyn>;
    |                        ^ expected identifier
diff --git a/tests/ui/pattern/issue-14221.rs b/tests/ui/pattern/issue-14221.rs
index 13427d2c9b2..f5f419a6314 100644
--- a/tests/ui/pattern/issue-14221.rs
+++ b/tests/ui/pattern/issue-14221.rs
@@ -8,7 +8,7 @@ pub enum E {
 }
 
 pub mod b {
-    pub fn key(e: ::E) -> &'static str {
+    pub fn key(e: crate::E) -> &'static str {
         match e {
             A => "A",
 //~^ ERROR pattern binding `A` is named the same as one of the variants of the type `E`
diff --git a/tests/ui/pattern/issue-22546.rs b/tests/ui/pattern/issue-22546.rs
index fd1d5fb6c47..81908017b4e 100644
--- a/tests/ui/pattern/issue-22546.rs
+++ b/tests/ui/pattern/issue-22546.rs
@@ -7,7 +7,7 @@ use std::default::Default;
 #[derive(Default)]
 pub struct Foo<T>(T, T);
 
-impl<T: ::std::fmt::Display> Foo<T> {
+impl<T: std::fmt::Display> Foo<T> {
     fn foo(&self) {
         match *self {
             Foo::<T>(ref x, ref y) => println!("Goodbye, World! {} {}", x, y)
@@ -36,7 +36,7 @@ fn main() {
     let w = Wrapper { value: Foo(10u8, 11u8) };
     match w {
         Wrapper::<Foo<u8>> { value: Foo(10, 11) } => {},
-        ::Wrapper::<<Foo<_> as Tr>::U> { value: Foo::<u8>(11, 16) } => { panic!() },
+        crate::Wrapper::<<Foo<_> as Tr>::U> { value: Foo::<u8>(11, 16) } => { panic!() },
         _ => { panic!() }
     }
 
diff --git a/tests/ui/pattern/issue-6449.rs b/tests/ui/pattern/issue-6449.rs
index 38399a18793..25152cf5d29 100644
--- a/tests/ui/pattern/issue-6449.rs
+++ b/tests/ui/pattern/issue-6449.rs
@@ -13,32 +13,32 @@ enum Other {
 
 fn main() {
     match Foo::Baz {
-        ::Foo::Bar(3) => panic!(),
-        ::Foo::Bar(_) if false => panic!(),
-        ::Foo::Bar(..) if false => panic!(),
-        ::Foo::Bar(_n) => panic!(),
-        ::Foo::Baz => {}
+        crate::Foo::Bar(3) => panic!(),
+        crate::Foo::Bar(_) if false => panic!(),
+        crate::Foo::Bar(..) if false => panic!(),
+        crate::Foo::Bar(_n) => panic!(),
+        crate::Foo::Baz => {}
     }
     match Foo::Bar(3) {
-        ::Foo::Bar(3) => {}
-        ::Foo::Bar(_) if false => panic!(),
-        ::Foo::Bar(..) if false => panic!(),
-        ::Foo::Bar(_n) => panic!(),
-        ::Foo::Baz => panic!(),
+        crate::Foo::Bar(3) => {}
+        crate::Foo::Bar(_) if false => panic!(),
+        crate::Foo::Bar(..) if false => panic!(),
+        crate::Foo::Bar(_n) => panic!(),
+        crate::Foo::Baz => panic!(),
     }
     match Foo::Bar(4) {
-        ::Foo::Bar(3) => panic!(),
-        ::Foo::Bar(_) if false => panic!(),
-        ::Foo::Bar(..) if false => panic!(),
-        ::Foo::Bar(n) => assert_eq!(n, 4),
-        ::Foo::Baz => panic!(),
+        crate::Foo::Bar(3) => panic!(),
+        crate::Foo::Bar(_) if false => panic!(),
+        crate::Foo::Bar(..) if false => panic!(),
+        crate::Foo::Bar(n) => assert_eq!(n, 4),
+        crate::Foo::Baz => panic!(),
     }
 
     match Other::Other1(Foo::Baz) {
-        ::Other::Other1(::Foo::Baz) => {}
-        ::Other::Other1(::Foo::Bar(_)) => {}
-        ::Other::Other2(::Foo::Baz, ::Foo::Bar(_)) => {}
-        ::Other::Other2(::Foo::Bar(..), ::Foo::Baz) => {}
-        ::Other::Other2(..) => {}
+        crate::Other::Other1(crate::Foo::Baz) => {}
+        crate::Other::Other1(crate::Foo::Bar(_)) => {}
+        crate::Other::Other2(crate::Foo::Baz, crate::Foo::Bar(_)) => {}
+        crate::Other::Other2(crate::Foo::Bar(..), crate::Foo::Baz) => {}
+        crate::Other::Other2(..) => {}
     }
 }
diff --git a/tests/ui/pattern/missing_lifetime.rs b/tests/ui/pattern/missing_lifetime.rs
index 081f667d8f6..53f8e155019 100644
--- a/tests/ui/pattern/missing_lifetime.rs
+++ b/tests/ui/pattern/missing_lifetime.rs
@@ -20,6 +20,6 @@ enum Other {
 
 fn main() {
     match Other::Other1(Foo::Baz) {
-        ::Other::Other2(::Foo::Bar(..)) => {}
+        crate::Other::Other2(crate::Foo::Bar(..)) => {}
     }
 }
diff --git a/tests/ui/pattern/usefulness/uninhabited.rs b/tests/ui/pattern/usefulness/uninhabited.rs
index 5c774b7874a..0e2793fb448 100644
--- a/tests/ui/pattern/usefulness/uninhabited.rs
+++ b/tests/ui/pattern/usefulness/uninhabited.rs
@@ -120,7 +120,7 @@ mod visibility {
     mod c {
         use super::*;
         pub struct AlsoSecretlyUninhabited {
-            _priv: ::Struct1,
+            _priv: crate::Struct1,
         }
         assert_empty!(SometimesEmptyStruct);
         assert_non_empty!(SometimesEmptyEnum);
diff --git a/tests/ui/privacy/auxiliary/pub_use_mods_xcrate.rs b/tests/ui/privacy/auxiliary/pub_use_mods_xcrate.rs
index 74d3504d5be..f754c01f3d5 100644
--- a/tests/ui/privacy/auxiliary/pub_use_mods_xcrate.rs
+++ b/tests/ui/privacy/auxiliary/pub_use_mods_xcrate.rs
@@ -1,5 +1,5 @@
 pub mod a {
-    pub use a::b::c;
+    pub use crate::a::b::c;
 
     pub mod b {
         pub mod c {
diff --git a/tests/ui/privacy/crate-private-reexport.rs b/tests/ui/privacy/crate-private-reexport.rs
index fa4f88666d8..db0314683a0 100644
--- a/tests/ui/privacy/crate-private-reexport.rs
+++ b/tests/ui/privacy/crate-private-reexport.rs
@@ -5,10 +5,10 @@ struct S1 {
     bar: i32,
 }
 mod m1 {
-    pub use ::f1; //~ ERROR `f1` is only public within the crate, and cannot be re-exported outside
-    pub use ::S1; //~ ERROR `S1` is only public within the crate, and cannot be re-exported outside
-    pub use ::E1; //~ ERROR `E1` is only public within the crate, and cannot be re-exported outside
-    pub use ::E1::V; //~ ERROR `V` is only public within the crate, and cannot be re-exported outside
+    pub use crate::f1; //~ ERROR `f1` is only public within the crate, and cannot be re-exported outside
+    pub use crate::S1; //~ ERROR `S1` is only public within the crate, and cannot be re-exported outside
+    pub use crate::E1; //~ ERROR `E1` is only public within the crate, and cannot be re-exported outside
+    pub use crate::E1::V; //~ ERROR `V` is only public within the crate, and cannot be re-exported outside
 }
 
 pub(crate) fn f2() {}
@@ -20,10 +20,10 @@ pub(crate) struct S2 {
     bar: i32,
 }
 mod m2 {
-    pub use ::f2; //~ ERROR `f2` is only public within the crate, and cannot be re-exported outside
-    pub use ::S2; //~ ERROR `S2` is only public within the crate, and cannot be re-exported outside
-    pub use ::E2; //~ ERROR `E2` is only public within the crate, and cannot be re-exported outside
-    pub use ::E2::V; //~ ERROR `V` is only public within the crate, and cannot be re-exported outside
+    pub use crate::f2; //~ ERROR `f2` is only public within the crate, and cannot be re-exported outside
+    pub use crate::S2; //~ ERROR `S2` is only public within the crate, and cannot be re-exported outside
+    pub use crate::E2; //~ ERROR `E2` is only public within the crate, and cannot be re-exported outside
+    pub use crate::E2::V; //~ ERROR `V` is only public within the crate, and cannot be re-exported outside
 }
 
 mod m3 {
@@ -42,7 +42,7 @@ pub use m3::E3; //~ ERROR `E3` is only public within the crate, and cannot be re
 pub use m3::E3::V; //~ ERROR `V` is only public within the crate, and cannot be re-exported outside
 
 pub(self) fn f4() {}
-pub use ::f4 as f5; //~ ERROR `f4` is only public within the crate, and cannot be re-exported outside
+pub use crate::f4 as f5; //~ ERROR `f4` is only public within the crate, and cannot be re-exported outside
 
 pub mod m10 {
     pub mod m {
diff --git a/tests/ui/privacy/crate-private-reexport.stderr b/tests/ui/privacy/crate-private-reexport.stderr
index 66e11e82107..9b2626efacd 100644
--- a/tests/ui/privacy/crate-private-reexport.stderr
+++ b/tests/ui/privacy/crate-private-reexport.stderr
@@ -1,82 +1,82 @@
 error[E0364]: `f1` is only public within the crate, and cannot be re-exported outside
   --> $DIR/crate-private-reexport.rs:8:13
    |
-LL |     pub use ::f1;
-   |             ^^^^
+LL |     pub use crate::f1;
+   |             ^^^^^^^^^
    |
 note: consider marking `f1` as `pub` in the imported module
   --> $DIR/crate-private-reexport.rs:8:13
    |
-LL |     pub use ::f1;
-   |             ^^^^
+LL |     pub use crate::f1;
+   |             ^^^^^^^^^
 
 error[E0365]: `S1` is only public within the crate, and cannot be re-exported outside
   --> $DIR/crate-private-reexport.rs:9:13
    |
-LL |     pub use ::S1;
-   |             ^^^^ re-export of crate public `S1`
+LL |     pub use crate::S1;
+   |             ^^^^^^^^^ re-export of crate public `S1`
    |
    = note: consider declaring type or module `S1` with `pub`
 
 error[E0365]: `E1` is only public within the crate, and cannot be re-exported outside
   --> $DIR/crate-private-reexport.rs:10:13
    |
-LL |     pub use ::E1;
-   |             ^^^^ re-export of crate public `E1`
+LL |     pub use crate::E1;
+   |             ^^^^^^^^^ re-export of crate public `E1`
    |
    = note: consider declaring type or module `E1` with `pub`
 
 error[E0364]: `V` is only public within the crate, and cannot be re-exported outside
   --> $DIR/crate-private-reexport.rs:11:13
    |
-LL |     pub use ::E1::V;
-   |             ^^^^^^^
+LL |     pub use crate::E1::V;
+   |             ^^^^^^^^^^^^
    |
 note: consider marking `V` as `pub` in the imported module
   --> $DIR/crate-private-reexport.rs:11:13
    |
-LL |     pub use ::E1::V;
-   |             ^^^^^^^
+LL |     pub use crate::E1::V;
+   |             ^^^^^^^^^^^^
 
 error[E0364]: `f2` is only public within the crate, and cannot be re-exported outside
   --> $DIR/crate-private-reexport.rs:23:13
    |
-LL |     pub use ::f2;
-   |             ^^^^
+LL |     pub use crate::f2;
+   |             ^^^^^^^^^
    |
 note: consider marking `f2` as `pub` in the imported module
   --> $DIR/crate-private-reexport.rs:23:13
    |
-LL |     pub use ::f2;
-   |             ^^^^
+LL |     pub use crate::f2;
+   |             ^^^^^^^^^
 
 error[E0365]: `S2` is only public within the crate, and cannot be re-exported outside
   --> $DIR/crate-private-reexport.rs:24:13
    |
-LL |     pub use ::S2;
-   |             ^^^^ re-export of crate public `S2`
+LL |     pub use crate::S2;
+   |             ^^^^^^^^^ re-export of crate public `S2`
    |
    = note: consider declaring type or module `S2` with `pub`
 
 error[E0365]: `E2` is only public within the crate, and cannot be re-exported outside
   --> $DIR/crate-private-reexport.rs:25:13
    |
-LL |     pub use ::E2;
-   |             ^^^^ re-export of crate public `E2`
+LL |     pub use crate::E2;
+   |             ^^^^^^^^^ re-export of crate public `E2`
    |
    = note: consider declaring type or module `E2` with `pub`
 
 error[E0364]: `V` is only public within the crate, and cannot be re-exported outside
   --> $DIR/crate-private-reexport.rs:26:13
    |
-LL |     pub use ::E2::V;
-   |             ^^^^^^^
+LL |     pub use crate::E2::V;
+   |             ^^^^^^^^^^^^
    |
 note: consider marking `V` as `pub` in the imported module
   --> $DIR/crate-private-reexport.rs:26:13
    |
-LL |     pub use ::E2::V;
-   |             ^^^^^^^
+LL |     pub use crate::E2::V;
+   |             ^^^^^^^^^^^^
 
 error[E0364]: `f3` is only public within the crate, and cannot be re-exported outside
   --> $DIR/crate-private-reexport.rs:39:9
@@ -121,14 +121,14 @@ LL | pub use m3::E3::V;
 error[E0364]: `f4` is only public within the crate, and cannot be re-exported outside
   --> $DIR/crate-private-reexport.rs:45:9
    |
-LL | pub use ::f4 as f5;
-   |         ^^^^^^^^^^
+LL | pub use crate::f4 as f5;
+   |         ^^^^^^^^^^^^^^^
    |
 note: consider marking `f4` as `pub` in the imported module
   --> $DIR/crate-private-reexport.rs:45:9
    |
-LL | pub use ::f4 as f5;
-   |         ^^^^^^^^^^
+LL | pub use crate::f4 as f5;
+   |         ^^^^^^^^^^^^^^^
 
 error[E0364]: `f6` is private, and cannot be re-exported
   --> $DIR/crate-private-reexport.rs:53:13
diff --git a/tests/ui/privacy/issue-30079.rs b/tests/ui/privacy/issue-30079.rs
index ddba629f528..3725540c24b 100644
--- a/tests/ui/privacy/issue-30079.rs
+++ b/tests/ui/privacy/issue-30079.rs
@@ -2,7 +2,7 @@ struct SemiPriv;
 
 mod m1 {
     struct Priv;
-    impl ::SemiPriv {
+    impl crate::SemiPriv {
         pub fn f(_: Priv) {} //~ WARN type `m1::Priv` is more private than the item `m1::<impl SemiPriv>::f`
     }
 
@@ -13,12 +13,12 @@ mod m1 {
 
 mod m2 {
     struct Priv;
-    impl ::std::ops::Deref for ::SemiPriv {
+    impl std::ops::Deref for crate::SemiPriv {
         type Target = Priv; //~ ERROR private type `m2::Priv` in public interface
         fn deref(&self) -> &Self::Target { unimplemented!() }
     }
 
-    impl ::std::ops::Deref for Priv {
+    impl std::ops::Deref for Priv {
         type Target = Priv; // ok
         fn deref(&self) -> &Self::Target { unimplemented!() }
     }
@@ -30,7 +30,7 @@ trait SemiPrivTrait {
 
 mod m3 {
     struct Priv;
-    impl ::SemiPrivTrait for () {
+    impl crate::SemiPrivTrait for () {
         type Assoc = Priv; //~ ERROR private type `m3::Priv` in public interface
     }
 }
diff --git a/tests/ui/privacy/issue-30079.stderr b/tests/ui/privacy/issue-30079.stderr
index f1facba7cd2..fcee1b5a93c 100644
--- a/tests/ui/privacy/issue-30079.stderr
+++ b/tests/ui/privacy/issue-30079.stderr
@@ -16,7 +16,7 @@ error[E0446]: private type `m2::Priv` in public interface
    |
 LL |     struct Priv;
    |     ----------- `m2::Priv` declared as private
-LL |     impl ::std::ops::Deref for ::SemiPriv {
+LL |     impl std::ops::Deref for crate::SemiPriv {
 LL |         type Target = Priv;
    |         ^^^^^^^^^^^ can't leak private type
 
@@ -25,7 +25,7 @@ error[E0446]: private type `m3::Priv` in public interface
    |
 LL |     struct Priv;
    |     ----------- `m3::Priv` declared as private
-LL |     impl ::SemiPrivTrait for () {
+LL |     impl crate::SemiPrivTrait for () {
 LL |         type Assoc = Priv;
    |         ^^^^^^^^^^ can't leak private type
 
diff --git a/tests/ui/privacy/issue-46209-private-enum-variant-reexport.rs b/tests/ui/privacy/issue-46209-private-enum-variant-reexport.rs
index 796ba4d2332..1800648b954 100644
--- a/tests/ui/privacy/issue-46209-private-enum-variant-reexport.rs
+++ b/tests/ui/privacy/issue-46209-private-enum-variant-reexport.rs
@@ -26,7 +26,7 @@ mod rank {
         Full,
     }
 
-    pub(in rank) enum PettyOfficer {
+    pub(in crate::rank) enum PettyOfficer {
         SecondClass,
         FirstClass,
         Chief,
diff --git a/tests/ui/privacy/legacy-ctor-visibility.rs b/tests/ui/privacy/legacy-ctor-visibility.rs
index 5732b6446fe..e698a481173 100644
--- a/tests/ui/privacy/legacy-ctor-visibility.rs
+++ b/tests/ui/privacy/legacy-ctor-visibility.rs
@@ -4,7 +4,7 @@ mod m {
     pub struct S(u8);
 
     mod n {
-        use S;
+        use crate::S;
         fn f() {
             S(10);
             //~^ ERROR expected function, tuple struct or tuple variant, found struct `S`
diff --git a/tests/ui/privacy/privacy-in-paths.rs b/tests/ui/privacy/privacy-in-paths.rs
index 9cee2b89dd5..4baa9758bbe 100644
--- a/tests/ui/privacy/privacy-in-paths.rs
+++ b/tests/ui/privacy/privacy-in-paths.rs
@@ -2,7 +2,7 @@ mod foo {
     pub use self::bar::S;
     mod bar {
         pub struct S;
-        pub use baz;
+        pub use crate::baz;
     }
 
     trait T {
@@ -21,9 +21,9 @@ pub mod baz {
     fn f() {}
 
     fn g() {
-        ::foo::bar::baz::f(); //~ERROR module `bar` is private
-        ::foo::bar::S::f(); //~ERROR module `bar` is private
-        <() as ::foo::T>::Assoc::f(); //~ERROR trait `T` is private
+        crate::foo::bar::baz::f(); //~ERROR module `bar` is private
+        crate::foo::bar::S::f(); //~ERROR module `bar` is private
+        <() as crate::foo::T>::Assoc::f(); //~ERROR trait `T` is private
     }
 }
 
diff --git a/tests/ui/privacy/privacy-in-paths.stderr b/tests/ui/privacy/privacy-in-paths.stderr
index e6ece35865d..4acb9baa66c 100644
--- a/tests/ui/privacy/privacy-in-paths.stderr
+++ b/tests/ui/privacy/privacy-in-paths.stderr
@@ -1,10 +1,10 @@
 error[E0603]: module `bar` is private
-  --> $DIR/privacy-in-paths.rs:24:16
+  --> $DIR/privacy-in-paths.rs:24:21
    |
-LL |         ::foo::bar::baz::f();
-   |                ^^^       - function `f` is not publicly re-exported
-   |                |
-   |                private module
+LL |         crate::foo::bar::baz::f();
+   |                     ^^^       - function `f` is not publicly re-exported
+   |                     |
+   |                     private module
    |
 note: the module `bar` is defined here
   --> $DIR/privacy-in-paths.rs:3:5
@@ -13,10 +13,10 @@ LL |     mod bar {
    |     ^^^^^^^
 
 error[E0603]: module `bar` is private
-  --> $DIR/privacy-in-paths.rs:25:16
+  --> $DIR/privacy-in-paths.rs:25:21
    |
-LL |         ::foo::bar::S::f();
-   |                ^^^ private module
+LL |         crate::foo::bar::S::f();
+   |                     ^^^ private module
    |
 note: the module `bar` is defined here
   --> $DIR/privacy-in-paths.rs:3:5
@@ -25,17 +25,17 @@ LL |     mod bar {
    |     ^^^^^^^
 help: consider importing this struct through its public re-export instead
    |
-LL -         ::foo::bar::S::f();
+LL -         crate::foo::bar::S::f();
 LL +         foo::S::f();
    |
 
 error[E0603]: trait `T` is private
-  --> $DIR/privacy-in-paths.rs:26:23
+  --> $DIR/privacy-in-paths.rs:26:28
    |
-LL |         <() as ::foo::T>::Assoc::f();
-   |                       ^   ----- associated type `Assoc` is not publicly re-exported
-   |                       |
-   |                       private trait
+LL |         <() as crate::foo::T>::Assoc::f();
+   |                            ^   ----- associated type `Assoc` is not publicly re-exported
+   |                            |
+   |                            private trait
    |
 note: the trait `T` is defined here
   --> $DIR/privacy-in-paths.rs:8:5
diff --git a/tests/ui/privacy/privacy-ufcs.rs b/tests/ui/privacy/privacy-ufcs.rs
index fec7f41340a..0ba682dde15 100644
--- a/tests/ui/privacy/privacy-ufcs.rs
+++ b/tests/ui/privacy/privacy-ufcs.rs
@@ -9,5 +9,5 @@ mod foo {
 }
 
 fn main() {
-    <i32 as ::foo::Bar>::baz(); //~ERROR trait `Bar` is private
+    <i32 as crate::foo::Bar>::baz(); //~ERROR trait `Bar` is private
 }
diff --git a/tests/ui/privacy/privacy-ufcs.stderr b/tests/ui/privacy/privacy-ufcs.stderr
index 5c986895d64..0608c06e8a4 100644
--- a/tests/ui/privacy/privacy-ufcs.stderr
+++ b/tests/ui/privacy/privacy-ufcs.stderr
@@ -1,10 +1,10 @@
 error[E0603]: trait `Bar` is private
-  --> $DIR/privacy-ufcs.rs:12:20
+  --> $DIR/privacy-ufcs.rs:12:25
    |
-LL |     <i32 as ::foo::Bar>::baz();
-   |                    ^^^   --- associated function `baz` is not publicly re-exported
-   |                    |
-   |                    private trait
+LL |     <i32 as crate::foo::Bar>::baz();
+   |                         ^^^   --- associated function `baz` is not publicly re-exported
+   |                         |
+   |                         private trait
    |
 note: the trait `Bar` is defined here
   --> $DIR/privacy-ufcs.rs:4:5
diff --git a/tests/ui/privacy/privacy1.rs b/tests/ui/privacy/privacy1.rs
index 9436441ecc6..6cd12b80782 100644
--- a/tests/ui/privacy/privacy1.rs
+++ b/tests/ui/privacy/privacy1.rs
@@ -98,34 +98,34 @@ fn lol() {
 
 mod foo {
     fn test() {
-        ::bar::A::foo();
-        ::bar::A::bar();        //~ ERROR: associated function `bar` is private
-        ::bar::A.foo2();
-        ::bar::baz::A::foo();   //~ ERROR: module `baz` is private
-        ::bar::baz::A::bar();   //~ ERROR: module `baz` is private
+        crate::bar::A::foo();
+        crate::bar::A::bar();        //~ ERROR: associated function `bar` is private
+        crate::bar::A.foo2();
+        crate::bar::baz::A::foo();   //~ ERROR: module `baz` is private
+        crate::bar::baz::A::bar();   //~ ERROR: module `baz` is private
                                 //~^ ERROR: associated function `bar` is private
-        ::bar::baz::A.foo2();   //~ ERROR: module `baz` is private
-        ::bar::baz::A.bar2();   //~ ERROR: module `baz` is private
+        crate::bar::baz::A.foo2();   //~ ERROR: module `baz` is private
+        crate::bar::baz::A.bar2();   //~ ERROR: module `baz` is private
                                 //~^ ERROR: method `bar2` is private
 
         let _: isize =
-        ::bar::B::foo();        //~ ERROR: trait `B` is private
-        ::lol();
+        crate::bar::B::foo();        //~ ERROR: trait `B` is private
+        crate::lol();
 
-        ::bar::Enum::Pub;
+        crate::bar::Enum::Pub;
 
         unsafe {
-            ::bar::epriv(); //~ ERROR: function `epriv` is private
-            ::bar::epub();
+            crate::bar::epriv(); //~ ERROR: function `epriv` is private
+            crate::bar::epub();
         }
 
-        ::bar::foo();
-        ::bar::bar();
+        crate::bar::foo();
+        crate::bar::bar();
 
-        ::bar::gpub();
+        crate::bar::gpub();
 
-        ::bar::baz::foo(); //~ ERROR: module `baz` is private
-        ::bar::baz::bar(); //~ ERROR: module `baz` is private
+        crate::bar::baz::foo(); //~ ERROR: module `baz` is private
+        crate::bar::baz::bar(); //~ ERROR: module `baz` is private
     }
 
     fn test2() {
@@ -154,7 +154,7 @@ mod foo {
         bar::bar();
     }
 
-    impl ::bar::B for f32 { fn foo() -> f32 { 1.0 } }
+    impl crate::bar::B for f32 { fn foo() -> f32 { 1.0 } }
     //~^ ERROR: trait `B` is private
 }
 
diff --git a/tests/ui/privacy/privacy1.stderr b/tests/ui/privacy/privacy1.stderr
index cb7b858e54d..1f2f4a92c48 100644
--- a/tests/ui/privacy/privacy1.stderr
+++ b/tests/ui/privacy/privacy1.stderr
@@ -48,12 +48,12 @@ LL |         mod i {
    |         ^^^^^
 
 error[E0603]: module `baz` is private
-  --> $DIR/privacy1.rs:104:16
+  --> $DIR/privacy1.rs:104:21
    |
-LL |         ::bar::baz::A::foo();
-   |                ^^^  - struct `A` is not publicly re-exported
-   |                |
-   |                private module
+LL |         crate::bar::baz::A::foo();
+   |                     ^^^  - struct `A` is not publicly re-exported
+   |                     |
+   |                     private module
    |
 note: the module `baz` is defined here
   --> $DIR/privacy1.rs:50:5
@@ -62,12 +62,12 @@ LL |     mod baz {
    |     ^^^^^^^
 
 error[E0603]: module `baz` is private
-  --> $DIR/privacy1.rs:105:16
+  --> $DIR/privacy1.rs:105:21
    |
-LL |         ::bar::baz::A::bar();
-   |                ^^^  - struct `A` is not publicly re-exported
-   |                |
-   |                private module
+LL |         crate::bar::baz::A::bar();
+   |                     ^^^  - struct `A` is not publicly re-exported
+   |                     |
+   |                     private module
    |
 note: the module `baz` is defined here
   --> $DIR/privacy1.rs:50:5
@@ -76,12 +76,12 @@ LL |     mod baz {
    |     ^^^^^^^
 
 error[E0603]: module `baz` is private
-  --> $DIR/privacy1.rs:107:16
+  --> $DIR/privacy1.rs:107:21
    |
-LL |         ::bar::baz::A.foo2();
-   |                ^^^  - unit struct `A` is not publicly re-exported
-   |                |
-   |                private module
+LL |         crate::bar::baz::A.foo2();
+   |                     ^^^  - unit struct `A` is not publicly re-exported
+   |                     |
+   |                     private module
    |
 note: the module `baz` is defined here
   --> $DIR/privacy1.rs:50:5
@@ -90,12 +90,12 @@ LL |     mod baz {
    |     ^^^^^^^
 
 error[E0603]: module `baz` is private
-  --> $DIR/privacy1.rs:108:16
+  --> $DIR/privacy1.rs:108:21
    |
-LL |         ::bar::baz::A.bar2();
-   |                ^^^  - unit struct `A` is not publicly re-exported
-   |                |
-   |                private module
+LL |         crate::bar::baz::A.bar2();
+   |                     ^^^  - unit struct `A` is not publicly re-exported
+   |                     |
+   |                     private module
    |
 note: the module `baz` is defined here
   --> $DIR/privacy1.rs:50:5
@@ -104,12 +104,12 @@ LL |     mod baz {
    |     ^^^^^^^
 
 error[E0603]: trait `B` is private
-  --> $DIR/privacy1.rs:112:16
+  --> $DIR/privacy1.rs:112:21
    |
-LL |         ::bar::B::foo();
-   |                ^  --- associated function `foo` is not publicly re-exported
-   |                |
-   |                private trait
+LL |         crate::bar::B::foo();
+   |                     ^  --- associated function `foo` is not publicly re-exported
+   |                     |
+   |                     private trait
    |
 note: the trait `B` is defined here
   --> $DIR/privacy1.rs:40:5
@@ -118,10 +118,10 @@ LL |     trait B {
    |     ^^^^^^^
 
 error[E0603]: function `epriv` is private
-  --> $DIR/privacy1.rs:118:20
+  --> $DIR/privacy1.rs:118:25
    |
-LL |             ::bar::epriv();
-   |                    ^^^^^ private function
+LL |             crate::bar::epriv();
+   |                         ^^^^^ private function
    |
 note: the function `epriv` is defined here
   --> $DIR/privacy1.rs:65:9
@@ -130,10 +130,10 @@ LL |         fn epriv();
    |         ^^^^^^^^^^^
 
 error[E0603]: module `baz` is private
-  --> $DIR/privacy1.rs:127:16
+  --> $DIR/privacy1.rs:127:21
    |
-LL |         ::bar::baz::foo();
-   |                ^^^ private module
+LL |         crate::bar::baz::foo();
+   |                     ^^^ private module
    |
 note: the module `baz` is defined here
   --> $DIR/privacy1.rs:50:5
@@ -142,15 +142,15 @@ LL |     mod baz {
    |     ^^^^^^^
 help: consider importing this function through its public re-export instead
    |
-LL -         ::bar::baz::foo();
+LL -         crate::bar::baz::foo();
 LL +         bar::foo();
    |
 
 error[E0603]: module `baz` is private
-  --> $DIR/privacy1.rs:128:16
+  --> $DIR/privacy1.rs:128:21
    |
-LL |         ::bar::baz::bar();
-   |                ^^^ private module
+LL |         crate::bar::baz::bar();
+   |                     ^^^ private module
    |
 note: the module `baz` is defined here
   --> $DIR/privacy1.rs:50:5
@@ -159,15 +159,15 @@ LL |     mod baz {
    |     ^^^^^^^
 help: consider importing this function through its public re-export instead
    |
-LL -         ::bar::baz::bar();
+LL -         crate::bar::baz::bar();
 LL +         bar::bar();
    |
 
 error[E0603]: trait `B` is private
-  --> $DIR/privacy1.rs:157:17
+  --> $DIR/privacy1.rs:157:22
    |
-LL |     impl ::bar::B for f32 { fn foo() -> f32 { 1.0 } }
-   |                 ^ private trait
+LL |     impl crate::bar::B for f32 { fn foo() -> f32 { 1.0 } }
+   |                      ^ private trait
    |
 note: the trait `B` is defined here
   --> $DIR/privacy1.rs:40:5
@@ -194,31 +194,31 @@ LL |     bar::A::bar();
    |             ^^^ private associated function
 
 error[E0624]: associated function `bar` is private
-  --> $DIR/privacy1.rs:102:19
+  --> $DIR/privacy1.rs:102:24
    |
 LL |         fn bar() {}
    |         -------- private associated function defined here
 ...
-LL |         ::bar::A::bar();
-   |                   ^^^ private associated function
+LL |         crate::bar::A::bar();
+   |                        ^^^ private associated function
 
 error[E0624]: associated function `bar` is private
-  --> $DIR/privacy1.rs:105:24
+  --> $DIR/privacy1.rs:105:29
    |
 LL |             fn bar() {}
    |             -------- private associated function defined here
 ...
-LL |         ::bar::baz::A::bar();
-   |                        ^^^ private associated function
+LL |         crate::bar::baz::A::bar();
+   |                             ^^^ private associated function
 
 error[E0624]: method `bar2` is private
-  --> $DIR/privacy1.rs:108:23
+  --> $DIR/privacy1.rs:108:28
    |
 LL |             fn bar2(&self) {}
    |             -------------- private method defined here
 ...
-LL |         ::bar::baz::A.bar2();
-   |                       ^^^^ private method
+LL |         crate::bar::baz::A.bar2();
+   |                            ^^^^ private method
 
 error: aborting due to 18 previous errors
 
diff --git a/tests/ui/privacy/privacy2.rs b/tests/ui/privacy/privacy2.rs
index e44100a8059..d4c4faf8ac4 100644
--- a/tests/ui/privacy/privacy2.rs
+++ b/tests/ui/privacy/privacy2.rs
@@ -10,7 +10,7 @@ mod bar {
     pub use self::glob::*;
 
     pub mod glob {
-        use foo;
+        use crate::foo;
     }
 }
 
diff --git a/tests/ui/privacy/privacy2.stderr b/tests/ui/privacy/privacy2.stderr
index b70134965fa..3d36f26f784 100644
--- a/tests/ui/privacy/privacy2.stderr
+++ b/tests/ui/privacy/privacy2.stderr
@@ -13,8 +13,8 @@ LL |     use bar::glob::foo;
 note: the function import `foo` is defined here...
   --> $DIR/privacy2.rs:13:13
    |
-LL |         use foo;
-   |             ^^^
+LL |         use crate::foo;
+   |             ^^^^^^^^^^
 note: ...and refers to the function `foo` which is defined here
   --> $DIR/privacy2.rs:17:1
    |
diff --git a/tests/ui/privacy/privacy3.stderr b/tests/ui/privacy/privacy3.stderr
index 06a287d35ea..4530dfe447b 100644
--- a/tests/ui/privacy/privacy3.stderr
+++ b/tests/ui/privacy/privacy3.stderr
@@ -5,6 +5,12 @@ LL |     use bar::gpriv;
    |         ^^^^^^^^^^ no `gpriv` in `bar`
 
 error: requires `sized` lang_item
+  --> $DIR/privacy3.rs:13:20
+   |
+LL |         fn gpriv() {}
+   |                    ^^
+
+error: requires `sized` lang_item
   --> $DIR/privacy3.rs:18:14
    |
 LL | pub fn foo() {}
@@ -28,12 +34,6 @@ error: requires `sized` lang_item
 LL | fn main() {}
    |           ^^
 
-error: requires `sized` lang_item
-  --> $DIR/privacy3.rs:13:20
-   |
-LL |         fn gpriv() {}
-   |                    ^^
-
 error: aborting due to 5 previous errors
 
 For more information about this error, try `rustc --explain E0432`.
diff --git a/tests/ui/privacy/private-inferred-type-1.rs b/tests/ui/privacy/private-inferred-type-1.rs
index b3eba53dd13..c5d90d50df4 100644
--- a/tests/ui/privacy/private-inferred-type-1.rs
+++ b/tests/ui/privacy/private-inferred-type-1.rs
@@ -12,9 +12,9 @@ trait Ref {
 mod m {
     struct Priv;
 
-    impl ::Arr0 for [Priv; 0] { fn arr0_secret(&self) {} }
-    impl ::TyParam for Option<Priv> { fn ty_param_secret(&self) {} }
-    impl<'a> ::Ref for &'a Priv { fn ref_secret(self) {} }
+    impl crate::Arr0 for [Priv; 0] { fn arr0_secret(&self) {} }
+    impl crate::TyParam for Option<Priv> { fn ty_param_secret(&self) {} }
+    impl<'a> crate::Ref for &'a Priv { fn ref_secret(self) {} }
 }
 
 fn anyref<'a, T>() -> &'a T { panic!() }
diff --git a/tests/ui/privacy/restricted/lookup-ignores-private.rs b/tests/ui/privacy/restricted/lookup-ignores-private.rs
index 7060db0092f..40fd8ff45b5 100644
--- a/tests/ui/privacy/restricted/lookup-ignores-private.rs
+++ b/tests/ui/privacy/restricted/lookup-ignores-private.rs
@@ -2,14 +2,14 @@
 #![allow(warnings)]
 
 mod foo {
-    pub use foo::bar::S;
+    pub use crate::foo::bar::S;
     mod bar {
         #[derive(Default)]
         pub struct S {
-            pub(in foo) x: i32,
+            pub(in crate::foo) x: i32,
         }
         impl S {
-            pub(in foo) fn f(&self) -> i32 { 0 }
+            pub(in crate::foo) fn f(&self) -> i32 { 0 }
         }
 
         pub struct S2 {
@@ -19,7 +19,7 @@ mod foo {
             pub(crate) fn f(&self) -> bool { false }
         }
 
-        impl ::std::ops::Deref for S {
+        impl std::ops::Deref for S {
             type Target = S2;
             fn deref(&self) -> &S2 { unimplemented!() }
         }
diff --git a/tests/ui/privacy/restricted/private-in-public.rs b/tests/ui/privacy/restricted/private-in-public.rs
index fa8371436b5..f54ab1d5a4a 100644
--- a/tests/ui/privacy/restricted/private-in-public.rs
+++ b/tests/ui/privacy/restricted/private-in-public.rs
@@ -2,7 +2,7 @@
 mod foo {
     struct Priv;
     mod bar {
-        use foo::Priv;
+        use crate::foo::Priv;
         pub(super) fn f(_: Priv) {}
         pub(crate) fn g(_: Priv) {}
         pub(crate) fn h(_: Priv) {}
diff --git a/tests/ui/privacy/restricted/struct-literal-field.rs b/tests/ui/privacy/restricted/struct-literal-field.rs
index 9c6104755a4..2bb2a7fe95f 100644
--- a/tests/ui/privacy/restricted/struct-literal-field.rs
+++ b/tests/ui/privacy/restricted/struct-literal-field.rs
@@ -3,7 +3,7 @@
 mod foo {
     pub mod bar {
         pub struct S {
-            pub(in foo) x: i32,
+            pub(in crate::foo) x: i32,
         }
     }
 
@@ -14,6 +14,6 @@ mod foo {
 }
 
 fn main() {
-    use foo::bar::S;
+    use crate::foo::bar::S;
     S { x: 0 }; //~ ERROR private
 }
diff --git a/tests/ui/proc-macro/crate-var.rs b/tests/ui/proc-macro/crate-var.rs
index cea5d48e080..56e9affae8b 100644
--- a/tests/ui/proc-macro/crate-var.rs
+++ b/tests/ui/proc-macro/crate-var.rs
@@ -31,7 +31,7 @@ macro_rules! local { () => {
 
     mod qself {
         #[derive(Double)]
-        struct QSelf(<::Foo as $crate::Trait>::Assoc);
+        struct QSelf(<crate::Foo as $crate::Trait>::Assoc);
     }
 
     mod qself_recurse {
@@ -43,7 +43,7 @@ macro_rules! local { () => {
         #[derive(Double)]
         #[repr(u32)]
         enum QSelfInConst {
-            Variant = <::Foo as $crate::Trait>::CONST,
+            Variant = <crate::Foo as $crate::Trait>::CONST,
         }
     }
 } }
diff --git a/tests/ui/proc-macro/helper-attr-blocked-by-import.rs b/tests/ui/proc-macro/helper-attr-blocked-by-import.rs
index 53c079fd19c..bb5006d1c11 100644
--- a/tests/ui/proc-macro/helper-attr-blocked-by-import.rs
+++ b/tests/ui/proc-macro/helper-attr-blocked-by-import.rs
@@ -10,7 +10,7 @@ use self::two::*;
 mod empty_helper {}
 
 mod one {
-    use empty_helper;
+    use crate::empty_helper;
 
     #[derive(Empty)]
     #[empty_helper]
@@ -18,7 +18,7 @@ mod one {
 }
 
 mod two {
-    use empty_helper;
+    use crate::empty_helper;
 
     #[derive(Empty)]
     #[empty_helper]
diff --git a/tests/ui/proc-macro/issue-50493.rs b/tests/ui/proc-macro/issue-50493.rs
index 4a88eee2185..2621e595baa 100644
--- a/tests/ui/proc-macro/issue-50493.rs
+++ b/tests/ui/proc-macro/issue-50493.rs
@@ -5,7 +5,7 @@ extern crate issue_50493;
 
 #[derive(Derive)]
 struct Restricted {
-    pub(in restricted) field: usize, //~ ERROR visibilities can only be restricted to ancestor modules
+    pub(in crate::restricted) field: usize, //~ ERROR visibilities can only be restricted to ancestor modules
 }
 
 mod restricted {}
diff --git a/tests/ui/proc-macro/issue-50493.stderr b/tests/ui/proc-macro/issue-50493.stderr
index 1cd3583135b..fc76e207bc7 100644
--- a/tests/ui/proc-macro/issue-50493.stderr
+++ b/tests/ui/proc-macro/issue-50493.stderr
@@ -1,8 +1,8 @@
 error[E0742]: visibilities can only be restricted to ancestor modules
   --> $DIR/issue-50493.rs:8:12
    |
-LL |     pub(in restricted) field: usize,
-   |            ^^^^^^^^^^
+LL |     pub(in crate::restricted) field: usize,
+   |            ^^^^^^^^^^^^^^^^^
 
 error: aborting due to 1 previous error
 
diff --git a/tests/ui/proc-macro/issue-53481.rs b/tests/ui/proc-macro/issue-53481.rs
index 11e11e2e6b6..ab5f175faf4 100644
--- a/tests/ui/proc-macro/issue-53481.rs
+++ b/tests/ui/proc-macro/issue-53481.rs
@@ -5,7 +5,7 @@
 extern crate test_macros;
 
 mod m1 {
-    use m2::Empty;
+    use crate::m2::Empty;
 
     #[derive(Empty)]
     struct A {}
diff --git a/tests/ui/proc-macro/trait-fn-args-2015.rs b/tests/ui/proc-macro/trait-fn-args-2015.rs
index c25bd768efe..010d986a86d 100644
--- a/tests/ui/proc-macro/trait-fn-args-2015.rs
+++ b/tests/ui/proc-macro/trait-fn-args-2015.rs
@@ -1,6 +1,7 @@
 // Unnamed arguments in trait functions can be passed through proc macros on 2015 edition.
 
 //@ check-pass
+//@ edition: 2015
 //@ proc-macro: test-macros.rs
 
 #![allow(anonymous_parameters)]
diff --git a/tests/ui/pub/pub-reexport-priv-extern-crate.rs b/tests/ui/pub/pub-reexport-priv-extern-crate.rs
index fb495be4001..9d615be30f4 100644
--- a/tests/ui/pub/pub-reexport-priv-extern-crate.rs
+++ b/tests/ui/pub/pub-reexport-priv-extern-crate.rs
@@ -7,14 +7,14 @@ mod foo1 {
 }
 
 mod foo2 {
-    use foo1::core; //~ ERROR crate import `core` is private
+    use crate::foo1::core; //~ ERROR crate import `core` is private
     pub mod bar {
         extern crate core;
     }
 }
 
 mod baz {
-    pub use foo2::bar::core; //~ ERROR crate import `core` is private
+    pub use crate::foo2::bar::core; //~ ERROR crate import `core` is private
 }
 
 fn main() {}
diff --git a/tests/ui/pub/pub-reexport-priv-extern-crate.stderr b/tests/ui/pub/pub-reexport-priv-extern-crate.stderr
index 8ab6e83641d..9bb64a3325b 100644
--- a/tests/ui/pub/pub-reexport-priv-extern-crate.stderr
+++ b/tests/ui/pub/pub-reexport-priv-extern-crate.stderr
@@ -1,8 +1,8 @@
 error[E0603]: crate import `core` is private
-  --> $DIR/pub-reexport-priv-extern-crate.rs:10:15
+  --> $DIR/pub-reexport-priv-extern-crate.rs:10:22
    |
-LL |     use foo1::core;
-   |               ^^^^ private crate import
+LL |     use crate::foo1::core;
+   |                      ^^^^ private crate import
    |
 note: the crate import `core` is defined here
   --> $DIR/pub-reexport-priv-extern-crate.rs:6:5
@@ -11,10 +11,10 @@ LL |     extern crate core;
    |     ^^^^^^^^^^^^^^^^^^
 
 error[E0603]: crate import `core` is private
-  --> $DIR/pub-reexport-priv-extern-crate.rs:17:24
+  --> $DIR/pub-reexport-priv-extern-crate.rs:17:31
    |
-LL |     pub use foo2::bar::core;
-   |                        ^^^^ private crate import
+LL |     pub use crate::foo2::bar::core;
+   |                               ^^^^ private crate import
    |
 note: the crate import `core` is defined here
   --> $DIR/pub-reexport-priv-extern-crate.rs:12:9
diff --git a/tests/ui/pub/pub-restricted.rs b/tests/ui/pub/pub-restricted.rs
index 2aa24121335..4d5eda69de5 100644
--- a/tests/ui/pub/pub-restricted.rs
+++ b/tests/ui/pub/pub-restricted.rs
@@ -7,7 +7,7 @@ pub (crate::a) fn cfn() {} //~ ERROR incorrect visibility restriction
 pub fn privfn() {}
 mod x {
     mod y {
-        pub (in x) fn foo() {}
+        pub (in crate::x) fn foo() {}
         pub (super) fn bar() {}
         pub (crate) fn qux() {}
     }
@@ -18,9 +18,9 @@ mod y {
         pub (crate) c: usize,
         pub (super) s: usize,
         valid_private: usize,
-        pub (in y) valid_in_x: usize,
+        pub (in crate::y) valid_in_x: usize,
         pub (a) invalid: usize, //~ ERROR incorrect visibility restriction
-        pub (in x) non_parent_invalid: usize, //~ ERROR visibilities can only be restricted
+        pub (in crate::x) non_parent_invalid: usize, //~ ERROR visibilities can only be restricted
     }
 }
 
diff --git a/tests/ui/pub/pub-restricted.stderr b/tests/ui/pub/pub-restricted.stderr
index 6c913938bb8..0548116362b 100644
--- a/tests/ui/pub/pub-restricted.stderr
+++ b/tests/ui/pub/pub-restricted.stderr
@@ -76,8 +76,8 @@ LL | pub (in xyz) fn xyz() {}
 error[E0742]: visibilities can only be restricted to ancestor modules
   --> $DIR/pub-restricted.rs:23:17
    |
-LL |         pub (in x) non_parent_invalid: usize,
-   |                 ^
+LL |         pub (in crate::x) non_parent_invalid: usize,
+   |                 ^^^^^^^^
 
 error: aborting due to 6 previous errors
 
diff --git a/tests/ui/query-system/issue-83479.rs b/tests/ui/query-system/issue-83479.rs
index 32676dfe9c8..94ceccf49f4 100644
--- a/tests/ui/query-system/issue-83479.rs
+++ b/tests/ui/query-system/issue-83479.rs
@@ -8,6 +8,7 @@ type PairCoupledTypes: Trait<
     }],
 > = impl Trait<
     //~^ ERROR: cannot find trait `Trait` in this scope
+    //~| ERROR: unconstrained opaque type
     [u32; {
         static FOO: usize; //~ ERROR: free static item without body
     }],
diff --git a/tests/ui/query-system/issue-83479.stderr b/tests/ui/query-system/issue-83479.stderr
index 7cb41f5cbe5..79764d01b3b 100644
--- a/tests/ui/query-system/issue-83479.stderr
+++ b/tests/ui/query-system/issue-83479.stderr
@@ -20,7 +20,7 @@ LL |         static FOO: usize;
    |                          help: provide a definition for the static: `= <expr>;`
 
 error: free static item without body
-  --> $DIR/issue-83479.rs:12:9
+  --> $DIR/issue-83479.rs:13:9
    |
 LL |         static FOO: usize;
    |         ^^^^^^^^^^^^^^^^^-
@@ -39,6 +39,21 @@ error[E0405]: cannot find trait `Trait` in this scope
 LL | > = impl Trait<
    |          ^^^^^ not found in this scope
 
-error: aborting due to 5 previous errors
+error: unconstrained opaque type
+  --> $DIR/issue-83479.rs:9:5
+   |
+LL |   > = impl Trait<
+   |  _____^
+LL | |
+LL | |
+LL | |     [u32; {
+LL | |         static FOO: usize;
+LL | |     }],
+LL | | >;
+   | |_^
+   |
+   = note: `PairCoupledTypes` must be used in combination with a concrete type within the same crate
+
+error: aborting due to 6 previous errors
 
 For more information about this error, try `rustc --explain E0405`.
diff --git a/tests/ui/recursion/auxiliary/recursive_reexports.rs b/tests/ui/recursion/auxiliary/recursive_reexports.rs
index f98fa71009f..47a79090f4d 100644
--- a/tests/ui/recursion/auxiliary/recursive_reexports.rs
+++ b/tests/ui/recursion/auxiliary/recursive_reexports.rs
@@ -1,3 +1,3 @@
 pub mod foo {
-    pub use foo;
+    pub use crate::foo;
 }
diff --git a/tests/ui/recursion_limit/issue-40003.rs b/tests/ui/recursion_limit/issue-40003.rs
index 5032d0c9db3..6bc40690dad 100644
--- a/tests/ui/recursion_limit/issue-40003.rs
+++ b/tests/ui/recursion_limit/issue-40003.rs
@@ -17,7 +17,7 @@ use future::{Future, IntoFuture};
 mod future {
     use std::result;
 
-    use {stream, Stream};
+    use crate::{stream, Stream};
 
     pub trait Future {
         type Item;
@@ -100,7 +100,7 @@ mod future {
 }
 
 mod stream {
-    use IntoFuture;
+    use crate::IntoFuture;
 
     pub trait Stream {
         type Item;
diff --git a/tests/ui/traits/associated_type_bound/116464-invalid-assoc-type-suggestion-in-trait-impl.stderr b/tests/ui/traits/associated_type_bound/116464-invalid-assoc-type-suggestion-in-trait-impl.stderr
index a22d88b7c59..eedaae43f9a 100644
--- a/tests/ui/traits/associated_type_bound/116464-invalid-assoc-type-suggestion-in-trait-impl.stderr
+++ b/tests/ui/traits/associated_type_bound/116464-invalid-assoc-type-suggestion-in-trait-impl.stderr
@@ -49,23 +49,6 @@ LL | fn func<T: Trait<u32, String>>(t: T) -> impl Trait<(), Assoc = i32> {
    |                                                        +++++++
 
 error[E0107]: trait takes 1 generic argument but 2 generic arguments were supplied
-  --> $DIR/116464-invalid-assoc-type-suggestion-in-trait-impl.rs:19:46
-   |
-LL | fn func<T: Trait<u32, String>>(t: T) -> impl Trait<(), i32> {
-   |                                              ^^^^^ expected 1 generic argument
-   |
-note: trait defined here, with 1 generic parameter: `T`
-  --> $DIR/116464-invalid-assoc-type-suggestion-in-trait-impl.rs:5:11
-   |
-LL | pub trait Trait<T> {
-   |           ^^^^^ -
-   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
-help: replace the generic bound with the associated type
-   |
-LL | fn func<T: Trait<u32, String>>(t: T) -> impl Trait<(), Assoc = i32> {
-   |                                                        +++++++
-
-error[E0107]: trait takes 1 generic argument but 2 generic arguments were supplied
   --> $DIR/116464-invalid-assoc-type-suggestion-in-trait-impl.rs:26:18
    |
 LL | struct Struct<T: Trait<u32, String>> {
@@ -127,6 +110,23 @@ note: struct defined here, with 1 generic parameter: `T`
 LL | struct Struct<T: Trait<u32, String>> {
    |        ^^^^^^ -
 
+error[E0107]: trait takes 1 generic argument but 2 generic arguments were supplied
+  --> $DIR/116464-invalid-assoc-type-suggestion-in-trait-impl.rs:19:46
+   |
+LL | fn func<T: Trait<u32, String>>(t: T) -> impl Trait<(), i32> {
+   |                                              ^^^^^ expected 1 generic argument
+   |
+note: trait defined here, with 1 generic parameter: `T`
+  --> $DIR/116464-invalid-assoc-type-suggestion-in-trait-impl.rs:5:11
+   |
+LL | pub trait Trait<T> {
+   |           ^^^^^ -
+   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
+help: replace the generic bound with the associated type
+   |
+LL | fn func<T: Trait<u32, String>>(t: T) -> impl Trait<(), Assoc = i32> {
+   |                                                        +++++++
+
 error: aborting due to 9 previous errors
 
 Some errors have detailed explanations: E0107, E0207.
diff --git a/tests/ui/traits/const-traits/const-impl-trait.stderr b/tests/ui/traits/const-traits/const-impl-trait.stderr
index 27d7957c001..6783cec3960 100644
--- a/tests/ui/traits/const-traits/const-impl-trait.stderr
+++ b/tests/ui/traits/const-traits/const-impl-trait.stderr
@@ -33,13 +33,14 @@ note: `PartialEq` can't be used with `~const` because it isn't annotated with `#
   --> $SRC_DIR/core/src/cmp.rs:LL:COL
 
 error: `~const` can only be applied to `#[const_trait]` traits
-  --> $DIR/const-impl-trait.rs:17:11
+  --> $DIR/const-impl-trait.rs:16:13
    |
-LL | ) -> impl ~const PartialEq + ~const Destruct {
-   |           ^^^^^^ can't be applied to `PartialEq`
+LL |     x: impl ~const PartialEq + ~const Destruct,
+   |             ^^^^^^ can't be applied to `PartialEq`
    |
 note: `PartialEq` can't be used with `~const` because it isn't annotated with `#[const_trait]`
   --> $SRC_DIR/core/src/cmp.rs:LL:COL
+   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
 
 error: `~const` can only be applied to `#[const_trait]` traits
   --> $DIR/const-impl-trait.rs:17:11
@@ -49,7 +50,6 @@ LL | ) -> impl ~const PartialEq + ~const Destruct {
    |
 note: `PartialEq` can't be used with `~const` because it isn't annotated with `#[const_trait]`
   --> $SRC_DIR/core/src/cmp.rs:LL:COL
-   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
 
 error: `~const` can only be applied to `#[const_trait]` traits
   --> $DIR/const-impl-trait.rs:17:11
@@ -62,32 +62,32 @@ note: `PartialEq` can't be used with `~const` because it isn't annotated with `#
    = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
 
 error: `~const` can only be applied to `#[const_trait]` traits
-  --> $DIR/const-impl-trait.rs:16:13
+  --> $DIR/const-impl-trait.rs:23:22
    |
-LL |     x: impl ~const PartialEq + ~const Destruct,
-   |             ^^^^^^ can't be applied to `PartialEq`
+LL |     fn huh() -> impl ~const PartialEq + ~const Destruct + Copy;
+   |                      ^^^^^^ can't be applied to `PartialEq`
    |
 note: `PartialEq` can't be used with `~const` because it isn't annotated with `#[const_trait]`
   --> $SRC_DIR/core/src/cmp.rs:LL:COL
-   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
 
 error: `~const` can only be applied to `#[const_trait]` traits
-  --> $DIR/const-impl-trait.rs:23:22
+  --> $DIR/const-impl-trait.rs:27:22
    |
-LL |     fn huh() -> impl ~const PartialEq + ~const Destruct + Copy;
+LL |     fn huh() -> impl ~const PartialEq + ~const Destruct + Copy {
    |                      ^^^^^^ can't be applied to `PartialEq`
    |
 note: `PartialEq` can't be used with `~const` because it isn't annotated with `#[const_trait]`
   --> $SRC_DIR/core/src/cmp.rs:LL:COL
 
 error: `~const` can only be applied to `#[const_trait]` traits
-  --> $DIR/const-impl-trait.rs:27:22
+  --> $DIR/const-impl-trait.rs:17:11
    |
-LL |     fn huh() -> impl ~const PartialEq + ~const Destruct + Copy {
-   |                      ^^^^^^ can't be applied to `PartialEq`
+LL | ) -> impl ~const PartialEq + ~const Destruct {
+   |           ^^^^^^ can't be applied to `PartialEq`
    |
 note: `PartialEq` can't be used with `~const` because it isn't annotated with `#[const_trait]`
   --> $SRC_DIR/core/src/cmp.rs:LL:COL
+   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
 
 error: `~const` can only be applied to `#[const_trait]` traits
   --> $DIR/const-impl-trait.rs:27:22
diff --git a/tests/ui/transmutability/structs/repr/transmute_infinitely_recursive_type.stderr b/tests/ui/transmutability/structs/repr/transmute_infinitely_recursive_type.stderr
index bdf2d3b6a58..1a0563b469c 100644
--- a/tests/ui/transmutability/structs/repr/transmute_infinitely_recursive_type.stderr
+++ b/tests/ui/transmutability/structs/repr/transmute_infinitely_recursive_type.stderr
@@ -12,7 +12,7 @@ LL |     struct ExplicitlyPadded(Box<ExplicitlyPadded>);
 error[E0391]: cycle detected when computing layout of `should_pad_explicitly_packed_field::ExplicitlyPadded`
    |
    = note: ...which immediately requires computing layout of `should_pad_explicitly_packed_field::ExplicitlyPadded` again
-   = note: cycle used when evaluating trait selection obligation `(): core::mem::transmutability::TransmuteFrom<should_pad_explicitly_packed_field::ExplicitlyPadded, core::mem::transmutability::Assume { alignment: false, lifetimes: false, safety: false, validity: false }>`
+   = note: cycle used when evaluating trait selection obligation `(): core::mem::transmutability::TransmuteFrom<should_pad_explicitly_packed_field::ExplicitlyPadded, ValTree(Branch([Leaf(0x00), Leaf(0x00), Leaf(0x00), Leaf(0x00)]): core::mem::transmutability::Assume)>`
    = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to 2 previous errors
diff --git a/tests/ui/type-alias-impl-trait/constrain_inputs.stderr b/tests/ui/type-alias-impl-trait/constrain_inputs.stderr
index b016715b129..cb299a2021e 100644
--- a/tests/ui/type-alias-impl-trait/constrain_inputs.stderr
+++ b/tests/ui/type-alias-impl-trait/constrain_inputs.stderr
@@ -25,19 +25,6 @@ LL |     type BadTraitRef = dyn Fn(Ty<'_>) -> &str;
    = note: lifetimes appearing in an associated or opaque type are not considered constrained
    = note: consider introducing a named lifetime parameter
 
-error: item does not constrain `lifetime_params::Ty::{opaque#0}`
-  --> $DIR/constrain_inputs.rs:8:8
-   |
-LL |     fn execute(ty: Ty<'_>) -> &str { todo!() }
-   |        ^^^^^^^
-   |
-   = note: consider removing `#[define_opaque]` or adding an empty `#[define_opaque()]`
-note: this opaque type is supposed to be constrained
-  --> $DIR/constrain_inputs.rs:4:19
-   |
-LL |     type Ty<'a> = impl Sized;
-   |                   ^^^^^^^^^^
-
 error[E0581]: return type references an anonymous lifetime, which is not constrained by the fn input types
   --> $DIR/constrain_inputs.rs:23:31
    |
@@ -47,19 +34,6 @@ LL |     fn execute(ty: Ty<'_>) -> &str { ty() }
    = note: lifetimes appearing in an associated or opaque type are not considered constrained
    = note: consider introducing a named lifetime parameter
 
-error: item does not constrain `lifetime_params_2::Ty::{opaque#0}`
-  --> $DIR/constrain_inputs.rs:23:8
-   |
-LL |     fn execute(ty: Ty<'_>) -> &str { ty() }
-   |        ^^^^^^^
-   |
-   = note: consider removing `#[define_opaque]` or adding an empty `#[define_opaque()]`
-note: this opaque type is supposed to be constrained
-  --> $DIR/constrain_inputs.rs:19:19
-   |
-LL |     type Ty<'a> = impl FnOnce() -> &'a str;
-   |                   ^^^^^^^^^^^^^^^^^^^^^^^^
-
 error[E0581]: return type references an anonymous lifetime, which is not constrained by the fn input types
   --> $DIR/constrain_inputs.rs:34:37
    |
@@ -78,6 +52,32 @@ LL |     type BadTraitRef = dyn Fn(Ty<&str>) -> &str;
    = note: lifetimes appearing in an associated or opaque type are not considered constrained
    = note: consider introducing a named lifetime parameter
 
+error: item does not constrain `lifetime_params::Ty::{opaque#0}`
+  --> $DIR/constrain_inputs.rs:8:8
+   |
+LL |     fn execute(ty: Ty<'_>) -> &str { todo!() }
+   |        ^^^^^^^
+   |
+   = note: consider removing `#[define_opaque]` or adding an empty `#[define_opaque()]`
+note: this opaque type is supposed to be constrained
+  --> $DIR/constrain_inputs.rs:4:19
+   |
+LL |     type Ty<'a> = impl Sized;
+   |                   ^^^^^^^^^^
+
+error: item does not constrain `lifetime_params_2::Ty::{opaque#0}`
+  --> $DIR/constrain_inputs.rs:23:8
+   |
+LL |     fn execute(ty: Ty<'_>) -> &str { ty() }
+   |        ^^^^^^^
+   |
+   = note: consider removing `#[define_opaque]` or adding an empty `#[define_opaque()]`
+note: this opaque type is supposed to be constrained
+  --> $DIR/constrain_inputs.rs:19:19
+   |
+LL |     type Ty<'a> = impl FnOnce() -> &'a str;
+   |                   ^^^^^^^^^^^^^^^^^^^^^^^^
+
 error: aborting due to 8 previous errors
 
 Some errors have detailed explanations: E0581, E0582.
diff --git a/triagebot.toml b/triagebot.toml
index 07ba5044f10..db263a3768f 100644
--- a/triagebot.toml
+++ b/triagebot.toml
@@ -1188,10 +1188,6 @@ cc = ["@m-ou-se"]
 [assign]
 warn_non_default_branch.enable = true
 contributing_url = "https://rustc-dev-guide.rust-lang.org/getting-started.html"
-users_on_vacation = [
-    "fmease",
-    "jyn514",
-]
 
 [[assign.warn_non_default_branch.exceptions]]
 title = "[beta"