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-rw-r--r--compiler/rustc_ast/src/attr/mod.rs6
-rw-r--r--compiler/rustc_ast/src/mut_visit.rs4
-rw-r--r--compiler/rustc_ast/src/tokenstream.rs137
-rw-r--r--compiler/rustc_ast_pretty/src/pprust/state.rs33
-rw-r--r--compiler/rustc_builtin_macros/src/assert/context.rs4
-rw-r--r--compiler/rustc_builtin_macros/src/env.rs14
-rw-r--r--compiler/rustc_codegen_llvm/src/intrinsic.rs9
-rw-r--r--compiler/rustc_codegen_ssa/src/mir/operand.rs2
-rw-r--r--compiler/rustc_const_eval/src/interpret/terminator.rs2
-rw-r--r--compiler/rustc_error_codes/src/error_codes/E0705.md4
-rw-r--r--compiler/rustc_expand/messages.ftl3
-rw-r--r--compiler/rustc_expand/src/config.rs110
-rw-r--r--compiler/rustc_expand/src/errors.rs10
-rw-r--r--compiler/rustc_expand/src/mbe.rs6
-rw-r--r--compiler/rustc_expand/src/mbe/macro_check.rs12
-rw-r--r--compiler/rustc_expand/src/mbe/macro_parser.rs4
-rw-r--r--compiler/rustc_expand/src/mbe/macro_rules.rs18
-rw-r--r--compiler/rustc_expand/src/mbe/metavar_expr.rs2
-rw-r--r--compiler/rustc_expand/src/mbe/quoted.rs7
-rw-r--r--compiler/rustc_expand/src/mbe/transcribe.rs42
-rw-r--r--compiler/rustc_expand/src/parse/tests.rs35
-rw-r--r--compiler/rustc_expand/src/proc_macro_server.rs44
-rw-r--r--compiler/rustc_feature/src/accepted.rs325
-rw-r--r--compiler/rustc_feature/src/lib.rs3
-rw-r--r--compiler/rustc_feature/src/removed.rs145
-rw-r--r--compiler/rustc_feature/src/unstable.rs399
-rw-r--r--compiler/rustc_lint/src/builtin.rs2
-rw-r--r--compiler/rustc_parse/src/lexer/mod.rs2
-rw-r--r--compiler/rustc_parse/src/lexer/tokentrees.rs82
-rw-r--r--compiler/rustc_parse/src/parser/attr_wrapper.rs14
-rw-r--r--compiler/rustc_parse/src/parser/expr.rs2
-rw-r--r--compiler/rustc_parse/src/parser/mod.rs44
-rw-r--r--compiler/rustc_session/src/config.rs369
-rw-r--r--compiler/rustc_session/src/options.rs4
-rw-r--r--compiler/rustc_span/src/edition.rs10
-rw-r--r--compiler/rustc_span/src/symbol.rs3
-rw-r--r--compiler/rustc_ty_utils/src/layout.rs18
-rw-r--r--config.example.toml2
-rw-r--r--library/core/src/primitive_docs.rs9
-rw-r--r--library/proc_macro/src/lib.rs26
-rw-r--r--src/bootstrap/src/core/config/config.rs467
-rw-r--r--src/bootstrap/src/utils/change_tracker.rs5
-rw-r--r--src/bootstrap/src/utils/helpers.rs14
-rw-r--r--src/doc/unstable-book/src/compiler-flags/env.md26
-rw-r--r--src/librustdoc/clean/render_macro_matchers.rs6
-rw-r--r--src/tools/clippy/clippy_lints/src/crate_in_macro_def.rs2
-rw-r--r--src/tools/miri/tests/pass/function_calls/abi_compat.rs6
-rw-r--r--src/tools/rustfmt/src/macros.rs6
-rw-r--r--src/tools/rustfmt/tests/source/issue-2927-2.rs2
-rw-r--r--src/tools/rustfmt/tests/source/issue-2927.rs2
-rw-r--r--src/tools/rustfmt/tests/target/issue-2927-2.rs2
-rw-r--r--src/tools/rustfmt/tests/target/issue-2927.rs2
-rw-r--r--tests/pretty/cast-lt.pp2
-rw-r--r--tests/run-make/rustc-macro-dep-files/foo.rs2
-rw-r--r--tests/ui/abi/compatibility.rs7
-rw-r--r--tests/ui/async-await/issues/issue-60674.stdout6
-rw-r--r--tests/ui/check-cfg/allow-same-level.stderr2
-rw-r--r--tests/ui/check-cfg/compact-names.stderr2
-rw-r--r--tests/ui/check-cfg/exhaustive-names-values.empty_cfg.stderr2
-rw-r--r--tests/ui/check-cfg/exhaustive-names-values.empty_names_values.stderr2
-rw-r--r--tests/ui/check-cfg/exhaustive-names-values.feature.stderr2
-rw-r--r--tests/ui/check-cfg/exhaustive-names-values.full.stderr2
-rw-r--r--tests/ui/check-cfg/exhaustive-names.exhaustive_names.stderr2
-rw-r--r--tests/ui/check-cfg/exhaustive-names.stderr2
-rw-r--r--tests/ui/check-cfg/mix.cfg.stderr2
-rw-r--r--tests/ui/check-cfg/mix.stderr2
-rw-r--r--tests/ui/check-cfg/stmt-no-ice.stderr2
-rw-r--r--tests/ui/check-cfg/well-known-names.stderr2
-rw-r--r--tests/ui/codegen/const-bool-bitcast.rs15
-rw-r--r--tests/ui/editions/edition-feature-ok.rs5
-rw-r--r--tests/ui/editions/edition-feature-redundant.rs7
-rw-r--r--tests/ui/editions/edition-feature-redundant.stderr9
-rw-r--r--tests/ui/editions/epoch-gate-feature.rs15
-rw-r--r--tests/ui/error-codes/E0705.rs10
-rw-r--r--tests/ui/error-codes/E0705.stderr9
-rw-r--r--tests/ui/extenv/extenv-env-overload.rs9
-rw-r--r--tests/ui/extenv/extenv-env.rs5
-rw-r--r--tests/ui/extenv/extenv-not-env.rs7
-rw-r--r--tests/ui/feature-gates/env-flag.rs3
-rw-r--r--tests/ui/feature-gates/env-flag.stderr2
-rw-r--r--tests/ui/hygiene/unpretty-debug.stdout2
-rw-r--r--tests/ui/infinite/issue-41731-infinite-macro-print.stderr8
-rw-r--r--tests/ui/infinite/issue-41731-infinite-macro-println.stderr8
-rw-r--r--tests/ui/macros/stringify.rs352
-rw-r--r--tests/ui/macros/syntax-extension-source-utils.rs4
-rw-r--r--tests/ui/macros/trace-macro.stderr2
-rw-r--r--tests/ui/macros/trace_faulty_macros.stderr14
-rw-r--r--tests/ui/proc-macro/allowed-attr-stmt-expr.stdout15
-rw-r--r--tests/ui/proc-macro/attr-complex-fn.stdout7
-rw-r--r--tests/ui/proc-macro/attr-stmt-expr.stdout9
-rw-r--r--tests/ui/proc-macro/attribute-after-derive.stdout6
-rw-r--r--tests/ui/proc-macro/attribute-spans-preserved.stdout2
-rw-r--r--tests/ui/proc-macro/auxiliary/attr-stmt-expr-rpass.rs7
-rw-r--r--tests/ui/proc-macro/auxiliary/attr-stmt-expr.rs2
-rw-r--r--tests/ui/proc-macro/auxiliary/derive-a.rs2
-rw-r--r--tests/ui/proc-macro/auxiliary/derive-atob.rs2
-rw-r--r--tests/ui/proc-macro/auxiliary/derive-b-rpass.rs2
-rw-r--r--tests/ui/proc-macro/auxiliary/derive-ctod.rs2
-rw-r--r--tests/ui/proc-macro/auxiliary/derive-same-struct.rs4
-rw-r--r--tests/ui/proc-macro/auxiliary/derive-union.rs2
-rw-r--r--tests/ui/proc-macro/auxiliary/expand-with-a-macro.rs2
-rw-r--r--tests/ui/proc-macro/auxiliary/issue-79825.rs2
-rw-r--r--tests/ui/proc-macro/capture-macro-rules-invoke.stdout2
-rw-r--r--tests/ui/proc-macro/capture-unglued-token.stdout2
-rw-r--r--tests/ui/proc-macro/cfg-eval-inner.stdout20
-rw-r--r--tests/ui/proc-macro/cfg-eval.stdout3
-rw-r--r--tests/ui/proc-macro/custom-attr-only-one-derive.rs2
-rw-r--r--tests/ui/proc-macro/derive-same-struct.stdout2
-rw-r--r--tests/ui/proc-macro/doc-comment-preserved.stdout2
-rw-r--r--tests/ui/proc-macro/dollar-crate-issue-57089.stdout6
-rw-r--r--tests/ui/proc-macro/dollar-crate-issue-62325.stdout6
-rw-r--r--tests/ui/proc-macro/dollar-crate.stdout18
-rw-r--r--tests/ui/proc-macro/expand-to-derive.stdout5
-rw-r--r--tests/ui/proc-macro/expr-stmt-nonterminal-tokens.stdout11
-rw-r--r--tests/ui/proc-macro/inert-attribute-order.stdout12
-rw-r--r--tests/ui/proc-macro/inner-attr-non-inline-mod.stdout3
-rw-r--r--tests/ui/proc-macro/inner-attrs.stdout26
-rw-r--r--tests/ui/proc-macro/issue-75734-pp-paren.stdout3
-rw-r--r--tests/ui/proc-macro/issue-75930-derive-cfg.stdout65
-rw-r--r--tests/ui/proc-macro/issue-78675-captured-inner-attrs.stdout2
-rw-r--r--tests/ui/proc-macro/keep-expr-tokens.stdout3
-rw-r--r--tests/ui/proc-macro/macro-rules-derive-cfg.stdout11
-rw-r--r--tests/ui/proc-macro/meta-macro-hygiene.stdout4
-rw-r--r--tests/ui/proc-macro/nested-derive-cfg.stdout2
-rw-r--r--tests/ui/proc-macro/nonterminal-expansion.stdout2
-rw-r--r--tests/ui/proc-macro/nonterminal-token-hygiene.stdout8
-rw-r--r--tests/ui/proc-macro/pretty-print-tts.stdout3
-rw-r--r--tests/ui/proc-macro/trailing-plus.stdout3
-rw-r--r--tests/ui/proc-macro/weird-braces.stdout34
-rw-r--r--tests/ui/rfcs/rfc-2361-dbg-macro/dbg-macro-expected-behavior.run.stderr2
-rw-r--r--tests/ui/rfcs/rfc-2565-param-attrs/auxiliary/param-attrs.rs39
-rw-r--r--tests/ui/rust-2018/edition-lint-fully-qualified-paths.fixed1
-rw-r--r--tests/ui/rust-2018/edition-lint-fully-qualified-paths.rs1
-rw-r--r--tests/ui/rust-2018/edition-lint-fully-qualified-paths.stderr8
-rw-r--r--tests/ui/rust-2018/edition-lint-nested-empty-paths.fixed1
-rw-r--r--tests/ui/rust-2018/edition-lint-nested-empty-paths.rs1
-rw-r--r--tests/ui/rust-2018/edition-lint-nested-empty-paths.stderr12
-rw-r--r--tests/ui/rust-2018/edition-lint-nested-paths.fixed1
-rw-r--r--tests/ui/rust-2018/edition-lint-nested-paths.rs1
-rw-r--r--tests/ui/rust-2018/edition-lint-nested-paths.stderr10
-rw-r--r--tests/ui/rust-2018/edition-lint-paths.fixed1
-rw-r--r--tests/ui/rust-2018/edition-lint-paths.rs1
-rw-r--r--tests/ui/rust-2018/edition-lint-paths.stderr20
-rw-r--r--tests/ui/rust-2018/extern-crate-idiomatic.fixed1
-rw-r--r--tests/ui/rust-2018/extern-crate-idiomatic.rs1
-rw-r--r--tests/ui/rust-2018/extern-crate-referenced-by-self-path.fixed1
-rw-r--r--tests/ui/rust-2018/extern-crate-referenced-by-self-path.rs1
-rw-r--r--tests/ui/rust-2018/extern-crate-rename.fixed1
-rw-r--r--tests/ui/rust-2018/extern-crate-rename.rs1
-rw-r--r--tests/ui/rust-2018/extern-crate-rename.stderr4
-rw-r--r--tests/ui/rust-2018/extern-crate-submod.fixed1
-rw-r--r--tests/ui/rust-2018/extern-crate-submod.rs1
-rw-r--r--tests/ui/rust-2018/extern-crate-submod.stderr4
-rw-r--r--tests/ui/rust-2018/issue-51008-1.rs2
-rw-r--r--tests/ui/rust-2018/issue-51008.rs2
-rw-r--r--tests/ui/rust-2018/proc-macro-crate-in-paths.rs1
-rw-r--r--tests/ui/rust-2018/suggestions-not-always-applicable.fixed1
-rw-r--r--tests/ui/rust-2018/suggestions-not-always-applicable.rs1
-rw-r--r--tests/ui/simd/repr_packed.rs59
-rw-r--r--tests/ui/tool_lints_2018_preview.rs1
160 files changed, 2005 insertions, 1537 deletions
diff --git a/compiler/rustc_ast/src/attr/mod.rs b/compiler/rustc_ast/src/attr/mod.rs
index 851ab46345f..98138cedb24 100644
--- a/compiler/rustc_ast/src/attr/mod.rs
+++ b/compiler/rustc_ast/src/attr/mod.rs
@@ -387,7 +387,7 @@ impl MetaItemKind {
         tokens: &mut impl Iterator<Item = &'a TokenTree>,
     ) -> Option<MetaItemKind> {
         match tokens.next() {
-            Some(TokenTree::Delimited(_, Delimiter::Invisible, inner_tokens)) => {
+            Some(TokenTree::Delimited(.., Delimiter::Invisible, inner_tokens)) => {
                 MetaItemKind::name_value_from_tokens(&mut inner_tokens.trees())
             }
             Some(TokenTree::Token(token, _)) => {
@@ -401,7 +401,7 @@ impl MetaItemKind {
         tokens: &mut iter::Peekable<impl Iterator<Item = &'a TokenTree>>,
     ) -> Option<MetaItemKind> {
         match tokens.peek() {
-            Some(TokenTree::Delimited(_, Delimiter::Parenthesis, inner_tokens)) => {
+            Some(TokenTree::Delimited(.., Delimiter::Parenthesis, inner_tokens)) => {
                 let inner_tokens = inner_tokens.clone();
                 tokens.next();
                 MetaItemKind::list_from_tokens(inner_tokens).map(MetaItemKind::List)
@@ -524,7 +524,7 @@ impl NestedMetaItem {
                 tokens.next();
                 return Some(NestedMetaItem::Lit(lit));
             }
-            Some(TokenTree::Delimited(_, Delimiter::Invisible, inner_tokens)) => {
+            Some(TokenTree::Delimited(.., Delimiter::Invisible, inner_tokens)) => {
                 tokens.next();
                 return NestedMetaItem::from_tokens(&mut inner_tokens.trees().peekable());
             }
diff --git a/compiler/rustc_ast/src/mut_visit.rs b/compiler/rustc_ast/src/mut_visit.rs
index 01defcff9ef..10b2025f937 100644
--- a/compiler/rustc_ast/src/mut_visit.rs
+++ b/compiler/rustc_ast/src/mut_visit.rs
@@ -682,7 +682,7 @@ pub fn visit_attr_tt<T: MutVisitor>(tt: &mut AttrTokenTree, vis: &mut T) {
         AttrTokenTree::Token(token, _) => {
             visit_token(token, vis);
         }
-        AttrTokenTree::Delimited(DelimSpan { open, close }, _delim, tts) => {
+        AttrTokenTree::Delimited(DelimSpan { open, close }, _spacing, _delim, tts) => {
             vis.visit_span(open);
             vis.visit_span(close);
             visit_attr_tts(tts, vis);
@@ -709,7 +709,7 @@ pub fn visit_tt<T: MutVisitor>(tt: &mut TokenTree, vis: &mut T) {
         TokenTree::Token(token, _) => {
             visit_token(token, vis);
         }
-        TokenTree::Delimited(DelimSpan { open, close }, _delim, tts) => {
+        TokenTree::Delimited(DelimSpan { open, close }, _spacing, _delim, tts) => {
             vis.visit_span(open);
             vis.visit_span(close);
             visit_tts(tts, vis);
diff --git a/compiler/rustc_ast/src/tokenstream.rs b/compiler/rustc_ast/src/tokenstream.rs
index 48854bbae24..4c0c496584e 100644
--- a/compiler/rustc_ast/src/tokenstream.rs
+++ b/compiler/rustc_ast/src/tokenstream.rs
@@ -46,7 +46,7 @@ pub enum TokenTree {
     /// delimiters are implicitly represented by `Delimited`.
     Token(Token, Spacing),
     /// A delimited sequence of token trees.
-    Delimited(DelimSpan, Delimiter, TokenStream),
+    Delimited(DelimSpan, DelimSpacing, Delimiter, TokenStream),
 }
 
 // Ensure all fields of `TokenTree` are `DynSend` and `DynSync`.
@@ -62,11 +62,11 @@ where
 }
 
 impl TokenTree {
-    /// Checks if this `TokenTree` is equal to the other, regardless of span information.
+    /// Checks if this `TokenTree` is equal to the other, regardless of span/spacing information.
     pub fn eq_unspanned(&self, other: &TokenTree) -> bool {
         match (self, other) {
             (TokenTree::Token(token, _), TokenTree::Token(token2, _)) => token.kind == token2.kind,
-            (TokenTree::Delimited(_, delim, tts), TokenTree::Delimited(_, delim2, tts2)) => {
+            (TokenTree::Delimited(.., delim, tts), TokenTree::Delimited(.., delim2, tts2)) => {
                 delim == delim2 && tts.eq_unspanned(tts2)
             }
             _ => false,
@@ -99,6 +99,11 @@ impl TokenTree {
         TokenTree::Token(Token::new(kind, span), Spacing::Joint)
     }
 
+    /// Create a `TokenTree::Token` with joint-hidden spacing.
+    pub fn token_joint_hidden(kind: TokenKind, span: Span) -> TokenTree {
+        TokenTree::Token(Token::new(kind, span), Spacing::JointHidden)
+    }
+
     pub fn uninterpolate(&self) -> Cow<'_, TokenTree> {
         match self {
             TokenTree::Token(token, spacing) => match token.uninterpolate() {
@@ -183,7 +188,7 @@ pub struct AttrTokenStream(pub Lrc<Vec<AttrTokenTree>>);
 #[derive(Clone, Debug, Encodable, Decodable)]
 pub enum AttrTokenTree {
     Token(Token, Spacing),
-    Delimited(DelimSpan, Delimiter, AttrTokenStream),
+    Delimited(DelimSpan, DelimSpacing, Delimiter, AttrTokenStream),
     /// Stores the attributes for an attribute target,
     /// along with the tokens for that attribute target.
     /// See `AttributesData` for more information
@@ -208,9 +213,14 @@ impl AttrTokenStream {
                 AttrTokenTree::Token(inner, spacing) => {
                     smallvec![TokenTree::Token(inner.clone(), *spacing)].into_iter()
                 }
-                AttrTokenTree::Delimited(span, delim, stream) => {
-                    smallvec![TokenTree::Delimited(*span, *delim, stream.to_tokenstream()),]
-                        .into_iter()
+                AttrTokenTree::Delimited(span, spacing, delim, stream) => {
+                    smallvec![TokenTree::Delimited(
+                        *span,
+                        *spacing,
+                        *delim,
+                        stream.to_tokenstream()
+                    ),]
+                    .into_iter()
                 }
                 AttrTokenTree::Attributes(data) => {
                     let idx = data
@@ -230,7 +240,7 @@ impl AttrTokenStream {
                         let mut found = false;
                         // Check the last two trees (to account for a trailing semi)
                         for tree in target_tokens.iter_mut().rev().take(2) {
-                            if let TokenTree::Delimited(span, delim, delim_tokens) = tree {
+                            if let TokenTree::Delimited(span, spacing, delim, delim_tokens) = tree {
                                 // Inner attributes are only supported on extern blocks, functions,
                                 // impls, and modules. All of these have their inner attributes
                                 // placed at the beginning of the rightmost outermost braced group:
@@ -250,7 +260,7 @@ impl AttrTokenStream {
                                     stream.push_stream(inner_attr.tokens());
                                 }
                                 stream.push_stream(delim_tokens.clone());
-                                *tree = TokenTree::Delimited(*span, *delim, stream);
+                                *tree = TokenTree::Delimited(*span, *spacing, *delim, stream);
                                 found = true;
                                 break;
                             }
@@ -303,21 +313,64 @@ pub struct AttributesData {
 #[derive(Clone, Debug, Default, Encodable, Decodable)]
 pub struct TokenStream(pub(crate) Lrc<Vec<TokenTree>>);
 
-/// Similar to `proc_macro::Spacing`, but for tokens.
-///
-/// Note that all `ast::TokenTree::Token` instances have a `Spacing`, but when
-/// we convert to `proc_macro::TokenTree` for proc macros only `Punct`
-/// `TokenTree`s have a `proc_macro::Spacing`.
+/// Indicates whether a token can join with the following token to form a
+/// compound token. Used for conversions to `proc_macro::Spacing`. Also used to
+/// guide pretty-printing, which is where the `JointHidden` value (which isn't
+/// part of `proc_macro::Spacing`) comes in useful.
 #[derive(Clone, Copy, Debug, PartialEq, Encodable, Decodable, HashStable_Generic)]
 pub enum Spacing {
-    /// The token is not immediately followed by an operator token (as
-    /// determined by `Token::is_op`). E.g. a `+` token is `Alone` in `+ =`,
-    /// `+/*foo*/=`, `+ident`, and `+()`.
+    /// The token cannot join with the following token to form a compound
+    /// token.
+    ///
+    /// In token streams parsed from source code, the compiler will use `Alone`
+    /// for any token immediately followed by whitespace, a non-doc comment, or
+    /// EOF.
+    ///
+    /// When constructing token streams within the compiler, use this for each
+    /// token that (a) should be pretty-printed with a space after it, or (b)
+    /// is the last token in the stream. (In the latter case the choice of
+    /// spacing doesn't matter because it is never used for the last token. We
+    /// arbitrarily use `Alone`.)
+    ///
+    /// Converts to `proc_macro::Spacing::Alone`, and
+    /// `proc_macro::Spacing::Alone` converts back to this.
     Alone,
 
-    /// The token is immediately followed by an operator token. E.g. a `+`
-    /// token is `Joint` in `+=` and `++`.
+    /// The token can join with the following token to form a compound token.
+    ///
+    /// In token streams parsed from source code, the compiler will use `Joint`
+    /// for any token immediately followed by punctuation (as determined by
+    /// `Token::is_punct`).
+    ///
+    /// When constructing token streams within the compiler, use this for each
+    /// token that (a) should be pretty-printed without a space after it, and
+    /// (b) is followed by a punctuation token.
+    ///
+    /// Converts to `proc_macro::Spacing::Joint`, and
+    /// `proc_macro::Spacing::Joint` converts back to this.
     Joint,
+
+    /// The token can join with the following token to form a compound token,
+    /// but this will not be visible at the proc macro level. (This is what the
+    /// `Hidden` means; see below.)
+    ///
+    /// In token streams parsed from source code, the compiler will use
+    /// `JointHidden` for any token immediately followed by anything not
+    /// covered by the `Alone` and `Joint` cases: an identifier, lifetime,
+    /// literal, delimiter, doc comment.
+    ///
+    /// When constructing token streams, use this for each token that (a)
+    /// should be pretty-printed without a space after it, and (b) is followed
+    /// by a non-punctuation token.
+    ///
+    /// Converts to `proc_macro::Spacing::Alone`, but
+    /// `proc_macro::Spacing::Alone` converts back to `token::Spacing::Alone`.
+    /// Because of that, pretty-printing of `TokenStream`s produced by proc
+    /// macros is unavoidably uglier (with more whitespace between tokens) than
+    /// pretty-printing of `TokenStream`'s produced by other means (i.e. parsed
+    /// source code, internally constructed token streams, and token streams
+    /// produced by declarative macros).
+    JointHidden,
 }
 
 impl TokenStream {
@@ -421,21 +474,14 @@ impl TokenStream {
         self
     }
 
-    /// Create a token stream containing a single token with alone spacing.
+    /// 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
+    /// `Spacing::Alone`.
     pub fn token_alone(kind: TokenKind, span: Span) -> TokenStream {
         TokenStream::new(vec![TokenTree::token_alone(kind, span)])
     }
 
-    /// Create a token stream containing a single token with joint spacing.
-    pub fn token_joint(kind: TokenKind, span: Span) -> TokenStream {
-        TokenStream::new(vec![TokenTree::token_joint(kind, span)])
-    }
-
-    /// Create a token stream containing a single `Delimited`.
-    pub fn delimited(span: DelimSpan, delim: Delimiter, tts: TokenStream) -> TokenStream {
-        TokenStream::new(vec![TokenTree::Delimited(span, delim, tts)])
-    }
-
     pub fn from_ast(node: &(impl HasAttrs + HasSpan + HasTokens + fmt::Debug)) -> TokenStream {
         let Some(tokens) = node.tokens() else {
             panic!("missing tokens for node at {:?}: {:?}", node.span(), node);
@@ -482,6 +528,7 @@ impl TokenStream {
             }
             token::Interpolated(nt) => TokenTree::Delimited(
                 DelimSpan::from_single(token.span),
+                DelimSpacing::new(Spacing::JointHidden, spacing),
                 Delimiter::Invisible,
                 TokenStream::from_nonterminal_ast(&nt.0).flattened(),
             ),
@@ -492,8 +539,8 @@ impl TokenStream {
     fn flatten_token_tree(tree: &TokenTree) -> TokenTree {
         match tree {
             TokenTree::Token(token, spacing) => TokenStream::flatten_token(token, *spacing),
-            TokenTree::Delimited(span, delim, tts) => {
-                TokenTree::Delimited(*span, *delim, tts.flattened())
+            TokenTree::Delimited(span, spacing, delim, tts) => {
+                TokenTree::Delimited(*span, *spacing, *delim, tts.flattened())
             }
         }
     }
@@ -503,7 +550,7 @@ impl TokenStream {
         fn can_skip(stream: &TokenStream) -> bool {
             stream.trees().all(|tree| match tree {
                 TokenTree::Token(token, _) => !matches!(token.kind, token::Interpolated(_)),
-                TokenTree::Delimited(_, _, inner) => can_skip(inner),
+                TokenTree::Delimited(.., inner) => can_skip(inner),
             })
         }
 
@@ -517,7 +564,7 @@ impl TokenStream {
     // If `vec` is not empty, try to glue `tt` onto its last token. The return
     // value indicates if gluing took place.
     fn try_glue_to_last(vec: &mut Vec<TokenTree>, tt: &TokenTree) -> bool {
-        if let Some(TokenTree::Token(last_tok, Spacing::Joint)) = vec.last()
+        if let Some(TokenTree::Token(last_tok, Spacing::Joint | Spacing::JointHidden)) = vec.last()
             && let TokenTree::Token(tok, spacing) = tt
             && let Some(glued_tok) = last_tok.glue(tok)
         {
@@ -592,9 +639,10 @@ impl TokenStream {
 
                     &TokenTree::Token(..) => i += 1,
 
-                    &TokenTree::Delimited(sp, delim, ref delim_stream) => {
+                    &TokenTree::Delimited(sp, spacing, delim, ref delim_stream) => {
                         if let Some(desugared_delim_stream) = desugar_inner(delim_stream.clone()) {
-                            let new_tt = TokenTree::Delimited(sp, delim, desugared_delim_stream);
+                            let new_tt =
+                                TokenTree::Delimited(sp, spacing, delim, desugared_delim_stream);
                             Lrc::make_mut(&mut stream.0)[i] = new_tt;
                             modified = true;
                         }
@@ -622,10 +670,11 @@ impl TokenStream {
                 num_of_hashes = cmp::max(num_of_hashes, count);
             }
 
-            // `/// foo` becomes `doc = r"foo"`.
+            // `/// foo` becomes `[doc = r"foo"]`.
             let delim_span = DelimSpan::from_single(span);
             let body = TokenTree::Delimited(
                 delim_span,
+                DelimSpacing::new(Spacing::JointHidden, Spacing::Alone),
                 Delimiter::Bracket,
                 [
                     TokenTree::token_alone(token::Ident(sym::doc, false), span),
@@ -641,7 +690,7 @@ impl TokenStream {
 
             if attr_style == AttrStyle::Inner {
                 vec![
-                    TokenTree::token_alone(token::Pound, span),
+                    TokenTree::token_joint(token::Pound, span),
                     TokenTree::token_alone(token::Not, span),
                     body,
                 ]
@@ -738,6 +787,18 @@ impl DelimSpan {
     }
 }
 
+#[derive(Copy, Clone, Debug, PartialEq, Encodable, Decodable, HashStable_Generic)]
+pub struct DelimSpacing {
+    pub open: Spacing,
+    pub close: Spacing,
+}
+
+impl DelimSpacing {
+    pub fn new(open: Spacing, close: Spacing) -> DelimSpacing {
+        DelimSpacing { open, close }
+    }
+}
+
 // Some types are used a lot. Make sure they don't unintentionally get bigger.
 #[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
 mod size_asserts {
diff --git a/compiler/rustc_ast_pretty/src/pprust/state.rs b/compiler/rustc_ast_pretty/src/pprust/state.rs
index ff36e6c2845..0fae2c78e27 100644
--- a/compiler/rustc_ast_pretty/src/pprust/state.rs
+++ b/compiler/rustc_ast_pretty/src/pprust/state.rs
@@ -10,7 +10,7 @@ use crate::pp::{self, Breaks};
 use rustc_ast::attr::AttrIdGenerator;
 use rustc_ast::ptr::P;
 use rustc_ast::token::{self, BinOpToken, CommentKind, Delimiter, Nonterminal, Token, TokenKind};
-use rustc_ast::tokenstream::{TokenStream, TokenTree};
+use rustc_ast::tokenstream::{Spacing, TokenStream, TokenTree};
 use rustc_ast::util::classify;
 use rustc_ast::util::comments::{gather_comments, Comment, CommentStyle};
 use rustc_ast::util::parser;
@@ -183,10 +183,10 @@ fn space_between(tt1: &TokenTree, tt2: &TokenTree) -> bool {
         //
         // FIXME: Incorrect cases:
         // - Let: `let(a, b) = (1, 2)`
-        (Tok(Token { kind: Ident(..), .. }, _), Del(_, Parenthesis, _)) => false,
+        (Tok(Token { kind: Ident(..), .. }, _), Del(_, _, Parenthesis, _)) => false,
 
         // `#` + `[`: `#[attr]`
-        (Tok(Token { kind: Pound, .. }, _), Del(_, Bracket, _)) => false,
+        (Tok(Token { kind: Pound, .. }, _), Del(_, _, Bracket, _)) => false,
 
         _ => true,
     }
@@ -509,16 +509,17 @@ pub trait PrintState<'a>: std::ops::Deref<Target = pp::Printer> + std::ops::Dere
     /// appropriate macro, transcribe back into the grammar we just parsed from,
     /// and then pretty-print the resulting AST nodes (so, e.g., we print
     /// expression arguments as expressions). It can be done! I think.
-    fn print_tt(&mut self, tt: &TokenTree, convert_dollar_crate: bool) {
+    fn print_tt(&mut self, tt: &TokenTree, convert_dollar_crate: bool) -> Spacing {
         match tt {
-            TokenTree::Token(token, _) => {
+            TokenTree::Token(token, spacing) => {
                 let token_str = self.token_to_string_ext(token, convert_dollar_crate);
                 self.word(token_str);
                 if let token::DocComment(..) = token.kind {
                     self.hardbreak()
                 }
+                *spacing
             }
-            TokenTree::Delimited(dspan, delim, tts) => {
+            TokenTree::Delimited(dspan, spacing, delim, tts) => {
                 self.print_mac_common(
                     None,
                     false,
@@ -528,6 +529,7 @@ pub trait PrintState<'a>: std::ops::Deref<Target = pp::Printer> + std::ops::Dere
                     convert_dollar_crate,
                     dspan.entire(),
                 );
+                spacing.close
             }
         }
     }
@@ -535,9 +537,20 @@ pub trait PrintState<'a>: std::ops::Deref<Target = pp::Printer> + std::ops::Dere
     fn print_tts(&mut self, tts: &TokenStream, convert_dollar_crate: bool) {
         let mut iter = tts.trees().peekable();
         while let Some(tt) = iter.next() {
-            self.print_tt(tt, convert_dollar_crate);
+            let spacing = self.print_tt(tt, convert_dollar_crate);
             if let Some(next) = iter.peek() {
-                if space_between(tt, next) {
+                // Should we print a space after `tt`? There are two guiding
+                // factors.
+                // - `spacing` is the more important and accurate one. Most
+                //   tokens have good spacing information, and
+                //   `Joint`/`JointHidden` get used a lot.
+                // - `space_between` is the backup. Code produced by proc
+                //   macros has worse spacing information, with no
+                //   `JointHidden` usage and too much `Alone` usage, which
+                //   would result in over-spaced output such as
+                //   `( x () , y . z )`. `space_between` avoids some of the
+                //   excess whitespace.
+                if spacing == Spacing::Alone && space_between(tt, next) {
                     self.space();
                 }
             }
@@ -1797,7 +1810,9 @@ impl<'a> State<'a> {
     }
 
     pub(crate) fn tt_to_string(&self, tt: &TokenTree) -> String {
-        Self::to_string(|s| s.print_tt(tt, false))
+        Self::to_string(|s| {
+            s.print_tt(tt, false);
+        })
     }
 
     pub(crate) fn tts_to_string(&self, tokens: &TokenStream) -> String {
diff --git a/compiler/rustc_builtin_macros/src/assert/context.rs b/compiler/rustc_builtin_macros/src/assert/context.rs
index 2a4bfe9e200..b54e119189a 100644
--- a/compiler/rustc_builtin_macros/src/assert/context.rs
+++ b/compiler/rustc_builtin_macros/src/assert/context.rs
@@ -151,7 +151,7 @@ impl<'cx, 'a> Context<'cx, 'a> {
     fn build_panic(&self, expr_str: &str, panic_path: Path) -> P<Expr> {
         let escaped_expr_str = escape_to_fmt(expr_str);
         let initial = [
-            TokenTree::token_alone(
+            TokenTree::token_joint_hidden(
                 token::Literal(token::Lit {
                     kind: token::LitKind::Str,
                     symbol: Symbol::intern(&if self.fmt_string.is_empty() {
@@ -170,7 +170,7 @@ impl<'cx, 'a> Context<'cx, 'a> {
         ];
         let captures = self.capture_decls.iter().flat_map(|cap| {
             [
-                TokenTree::token_alone(token::Ident(cap.ident.name, false), cap.ident.span),
+                TokenTree::token_joint_hidden(token::Ident(cap.ident.name, false), cap.ident.span),
                 TokenTree::token_alone(token::Comma, self.span),
             ]
         });
diff --git a/compiler/rustc_builtin_macros/src/env.rs b/compiler/rustc_builtin_macros/src/env.rs
index 8c2fa6ee95f..d772642b88b 100644
--- a/compiler/rustc_builtin_macros/src/env.rs
+++ b/compiler/rustc_builtin_macros/src/env.rs
@@ -13,6 +13,16 @@ use thin_vec::thin_vec;
 
 use crate::errors;
 
+fn lookup_env<'cx>(cx: &'cx ExtCtxt<'_>, var: Symbol) -> Option<Symbol> {
+    let var = var.as_str();
+    if let Some(value) = cx.sess.opts.logical_env.get(var) {
+        return Some(Symbol::intern(value));
+    }
+    // If the environment variable was not defined with the `--env` option, we try to retrieve it
+    // from rustc's environment.
+    env::var(var).ok().as_deref().map(Symbol::intern)
+}
+
 pub fn expand_option_env<'cx>(
     cx: &'cx mut ExtCtxt<'_>,
     sp: Span,
@@ -23,7 +33,7 @@ pub fn expand_option_env<'cx>(
     };
 
     let sp = cx.with_def_site_ctxt(sp);
-    let value = env::var(var.as_str()).ok().as_deref().map(Symbol::intern);
+    let value = lookup_env(cx, var);
     cx.sess.parse_sess.env_depinfo.borrow_mut().insert((var, value));
     let e = match value {
         None => {
@@ -77,7 +87,7 @@ pub fn expand_env<'cx>(
     };
 
     let span = cx.with_def_site_ctxt(sp);
-    let value = env::var(var.as_str()).ok().as_deref().map(Symbol::intern);
+    let value = lookup_env(cx, var);
     cx.sess.parse_sess.env_depinfo.borrow_mut().insert((var, value));
     let e = match value {
         None => {
diff --git a/compiler/rustc_codegen_llvm/src/intrinsic.rs b/compiler/rustc_codegen_llvm/src/intrinsic.rs
index f16014e1361..23b424f25ba 100644
--- a/compiler/rustc_codegen_llvm/src/intrinsic.rs
+++ b/compiler/rustc_codegen_llvm/src/intrinsic.rs
@@ -10,7 +10,7 @@ use crate::value::Value;
 use rustc_codegen_ssa::base::{compare_simd_types, wants_msvc_seh, wants_wasm_eh};
 use rustc_codegen_ssa::common::{IntPredicate, TypeKind};
 use rustc_codegen_ssa::errors::{ExpectedPointerMutability, InvalidMonomorphization};
-use rustc_codegen_ssa::mir::operand::OperandRef;
+use rustc_codegen_ssa::mir::operand::{OperandRef, OperandValue};
 use rustc_codegen_ssa::mir::place::PlaceRef;
 use rustc_codegen_ssa::traits::*;
 use rustc_hir as hir;
@@ -946,6 +946,13 @@ fn generic_simd_intrinsic<'ll, 'tcx>(
         tcx.normalize_erasing_late_bound_regions(ty::ParamEnv::reveal_all(), callee_ty.fn_sig(tcx));
     let arg_tys = sig.inputs();
 
+    // Vectors must be immediates (non-power-of-2 #[repr(packed)] are not)
+    for (ty, arg) in arg_tys.iter().zip(args) {
+        if ty.is_simd() && !matches!(arg.val, OperandValue::Immediate(_)) {
+            return_error!(InvalidMonomorphization::SimdArgument { span, name, ty: *ty });
+        }
+    }
+
     if name == sym::simd_select_bitmask {
         let (len, _) = require_simd!(arg_tys[1], SimdArgument);
 
diff --git a/compiler/rustc_codegen_ssa/src/mir/operand.rs b/compiler/rustc_codegen_ssa/src/mir/operand.rs
index d724f9503bb..feee3ac03d0 100644
--- a/compiler/rustc_codegen_ssa/src/mir/operand.rs
+++ b/compiler/rustc_codegen_ssa/src/mir/operand.rs
@@ -155,7 +155,7 @@ impl<'a, 'tcx, V: CodegenObject> OperandRef<'tcx, V> {
             Abi::Scalar(s @ abi::Scalar::Initialized { .. }) => {
                 let size = s.size(bx);
                 assert_eq!(size, layout.size, "abi::Scalar size does not match layout size");
-                let val = read_scalar(offset, size, s, bx.backend_type(layout));
+                let val = read_scalar(offset, size, s, bx.immediate_backend_type(layout));
                 OperandRef { val: OperandValue::Immediate(val), layout }
             }
             Abi::ScalarPair(
diff --git a/compiler/rustc_const_eval/src/interpret/terminator.rs b/compiler/rustc_const_eval/src/interpret/terminator.rs
index e48506bd083..2358caffc9b 100644
--- a/compiler/rustc_const_eval/src/interpret/terminator.rs
+++ b/compiler/rustc_const_eval/src/interpret/terminator.rs
@@ -384,10 +384,12 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
         }
 
         // Compatible integer types (in particular, usize vs ptr-sized-u32/u64).
+        // `char` counts as `u32.`
         let int_ty = |ty: Ty<'tcx>| {
             Some(match ty.kind() {
                 ty::Int(ity) => (Integer::from_int_ty(&self.tcx, *ity), /* signed */ true),
                 ty::Uint(uty) => (Integer::from_uint_ty(&self.tcx, *uty), /* signed */ false),
+                ty::Char => (Integer::I32, /* signed */ false),
                 _ => return None,
             })
         };
diff --git a/compiler/rustc_error_codes/src/error_codes/E0705.md b/compiler/rustc_error_codes/src/error_codes/E0705.md
index eb76d1836fc..317f3a47eff 100644
--- a/compiler/rustc_error_codes/src/error_codes/E0705.md
+++ b/compiler/rustc_error_codes/src/error_codes/E0705.md
@@ -1,9 +1,11 @@
+#### Note: this error code is no longer emitted by the compiler.
+
 A `#![feature]` attribute was declared for a feature that is stable in the
 current edition, but not in all editions.
 
 Erroneous code example:
 
-```rust2018,compile_fail,E0705
+```compile_fail
 #![feature(rust_2018_preview)]
 #![feature(test_2018_feature)] // error: the feature
                                // `test_2018_feature` is
diff --git a/compiler/rustc_expand/messages.ftl b/compiler/rustc_expand/messages.ftl
index fc3f7b1d749..475dd348e7b 100644
--- a/compiler/rustc_expand/messages.ftl
+++ b/compiler/rustc_expand/messages.ftl
@@ -35,9 +35,6 @@ expand_explain_doc_comment_outer =
 expand_expr_repeat_no_syntax_vars =
     attempted to repeat an expression containing no syntax variables matched as repeating at this depth
 
-expand_feature_included_in_edition =
-    the feature `{$feature}` is included in the Rust {$edition} edition
-
 expand_feature_not_allowed =
     the feature `{$name}` is not in the list of allowed features
 
diff --git a/compiler/rustc_expand/src/config.rs b/compiler/rustc_expand/src/config.rs
index 5ccef343b17..0b56dbb2c19 100644
--- a/compiler/rustc_expand/src/config.rs
+++ b/compiler/rustc_expand/src/config.rs
@@ -1,25 +1,22 @@
 //! Conditional compilation stripping.
 
 use crate::errors::{
-    FeatureIncludedInEdition, FeatureNotAllowed, FeatureRemoved, FeatureRemovedReason, InvalidCfg,
-    MalformedFeatureAttribute, MalformedFeatureAttributeHelp, RemoveExprNotSupported,
+    FeatureNotAllowed, FeatureRemoved, FeatureRemovedReason, InvalidCfg, MalformedFeatureAttribute,
+    MalformedFeatureAttributeHelp, RemoveExprNotSupported,
 };
 use rustc_ast::ptr::P;
 use rustc_ast::token::{Delimiter, Token, TokenKind};
-use rustc_ast::tokenstream::{AttrTokenStream, AttrTokenTree};
-use rustc_ast::tokenstream::{DelimSpan, Spacing};
+use rustc_ast::tokenstream::{AttrTokenStream, AttrTokenTree, DelimSpacing, DelimSpan, Spacing};
 use rustc_ast::tokenstream::{LazyAttrTokenStream, TokenTree};
 use rustc_ast::NodeId;
 use rustc_ast::{self as ast, AttrStyle, Attribute, HasAttrs, HasTokens, MetaItem};
 use rustc_attr as attr;
 use rustc_data_structures::flat_map_in_place::FlatMapInPlace;
-use rustc_data_structures::fx::FxHashSet;
 use rustc_feature::Features;
 use rustc_feature::{ACCEPTED_FEATURES, REMOVED_FEATURES, UNSTABLE_FEATURES};
 use rustc_parse::validate_attr;
 use rustc_session::parse::feature_err;
 use rustc_session::Session;
-use rustc_span::edition::ALL_EDITIONS;
 use rustc_span::symbol::{sym, Symbol};
 use rustc_span::Span;
 use thin_vec::ThinVec;
@@ -48,42 +45,6 @@ pub fn features(sess: &Session, krate_attrs: &[Attribute], crate_name: Symbol) -
 
     let mut features = Features::default();
 
-    // The edition from `--edition`.
-    let crate_edition = sess.edition();
-
-    // The maximum of (a) the edition from `--edition` and (b) any edition
-    // umbrella feature-gates declared in the code.
-    // - E.g. if `crate_edition` is 2015 but `rust_2018_preview` is present,
-    //   `feature_edition` is 2018
-    let mut features_edition = crate_edition;
-    for attr in krate_attrs {
-        for mi in feature_list(attr) {
-            if mi.is_word() {
-                let name = mi.name_or_empty();
-                let edition = ALL_EDITIONS.iter().find(|e| name == e.feature_name()).copied();
-                if let Some(edition) = edition
-                    && edition > features_edition
-                {
-                    features_edition = edition;
-                }
-            }
-        }
-    }
-
-    // Enable edition-dependent features based on `features_edition`.
-    // - E.g. enable `test_2018_feature` if `features_edition` is 2018 or higher
-    let mut edition_enabled_features = FxHashSet::default();
-    for f in UNSTABLE_FEATURES {
-        if let Some(edition) = f.feature.edition
-            && edition <= features_edition
-        {
-            // FIXME(Manishearth) there is currently no way to set lib features by
-            // edition.
-            edition_enabled_features.insert(f.feature.name);
-            (f.set_enabled)(&mut features);
-        }
-    }
-
     // Process all features declared in the code.
     for attr in krate_attrs {
         for mi in feature_list(attr) {
@@ -108,38 +69,6 @@ pub fn features(sess: &Session, krate_attrs: &[Attribute], crate_name: Symbol) -
                 }
             };
 
-            // If the declared feature is an edition umbrella feature-gate,
-            // warn if it was redundant w.r.t. `crate_edition`.
-            // - E.g. warn if `rust_2018_preview` is declared when
-            //   `crate_edition` is 2018
-            // - E.g. don't warn if `rust_2018_preview` is declared when
-            //   `crate_edition` is 2015.
-            if let Some(&edition) = ALL_EDITIONS.iter().find(|e| name == e.feature_name()) {
-                if edition <= crate_edition {
-                    sess.emit_warning(FeatureIncludedInEdition {
-                        span: mi.span(),
-                        feature: name,
-                        edition,
-                    });
-                }
-                features.set_declared_lang_feature(name, mi.span(), None);
-                continue;
-            }
-
-            // If the declared feature is edition-dependent and was already
-            // enabled due to `feature_edition`, give a warning.
-            // - E.g. warn if `test_2018_feature` is declared when
-            //   `feature_edition` is 2018 or higher.
-            if edition_enabled_features.contains(&name) {
-                sess.emit_warning(FeatureIncludedInEdition {
-                    span: mi.span(),
-                    feature: name,
-                    edition: features_edition,
-                });
-                features.set_declared_lang_feature(name, mi.span(), None);
-                continue;
-            }
-
             // If the declared feature has been removed, issue an error.
             if let Some(f) = REMOVED_FEATURES.iter().find(|f| name == f.feature.name) {
                 sess.emit_err(FeatureRemoved {
@@ -242,7 +171,7 @@ impl<'a> StripUnconfigured<'a> {
             stream.0.iter().all(|tree| match tree {
                 AttrTokenTree::Attributes(_) => false,
                 AttrTokenTree::Token(..) => true,
-                AttrTokenTree::Delimited(_, _, inner) => can_skip(inner),
+                AttrTokenTree::Delimited(.., inner) => can_skip(inner),
             })
         }
 
@@ -266,9 +195,9 @@ impl<'a> StripUnconfigured<'a> {
                         None.into_iter()
                     }
                 }
-                AttrTokenTree::Delimited(sp, delim, mut inner) => {
+                AttrTokenTree::Delimited(sp, spacing, delim, mut inner) => {
                     inner = self.configure_tokens(&inner);
-                    Some(AttrTokenTree::Delimited(sp, delim, inner)).into_iter()
+                    Some(AttrTokenTree::Delimited(sp, spacing, delim, inner)).into_iter()
                 }
                 AttrTokenTree::Token(ref token, _)
                     if let TokenKind::Interpolated(nt) = &token.kind =>
@@ -372,27 +301,32 @@ impl<'a> StripUnconfigured<'a> {
         };
         let pound_span = pound_token.span;
 
-        let mut trees = vec![AttrTokenTree::Token(pound_token, Spacing::Alone)];
-        if attr.style == AttrStyle::Inner {
-            // For inner attributes, we do the same thing for the `!` in `#![some_attr]`
-            let TokenTree::Token(bang_token @ Token { kind: TokenKind::Not, .. }, _) =
-                orig_trees.next().unwrap().clone()
-            else {
-                panic!("Bad tokens for attribute {attr:?}");
-            };
-            trees.push(AttrTokenTree::Token(bang_token, Spacing::Alone));
-        }
         // We don't really have a good span to use for the synthesized `[]`
         // in `#[attr]`, so just use the span of the `#` token.
         let bracket_group = AttrTokenTree::Delimited(
             DelimSpan::from_single(pound_span),
+            DelimSpacing::new(Spacing::JointHidden, Spacing::Alone),
             Delimiter::Bracket,
             item.tokens
                 .as_ref()
                 .unwrap_or_else(|| panic!("Missing tokens for {item:?}"))
                 .to_attr_token_stream(),
         );
-        trees.push(bracket_group);
+        let trees = if attr.style == AttrStyle::Inner {
+            // For inner attributes, we do the same thing for the `!` in `#![some_attr]`
+            let TokenTree::Token(bang_token @ Token { kind: TokenKind::Not, .. }, _) =
+                orig_trees.next().unwrap().clone()
+            else {
+                panic!("Bad tokens for attribute {attr:?}");
+            };
+            vec![
+                AttrTokenTree::Token(pound_token, Spacing::Joint),
+                AttrTokenTree::Token(bang_token, Spacing::JointHidden),
+                bracket_group,
+            ]
+        } else {
+            vec![AttrTokenTree::Token(pound_token, Spacing::JointHidden), bracket_group]
+        };
         let tokens = Some(LazyAttrTokenStream::new(AttrTokenStream::new(trees)));
         let attr = attr::mk_attr_from_item(
             &self.sess.parse_sess.attr_id_generator,
diff --git a/compiler/rustc_expand/src/errors.rs b/compiler/rustc_expand/src/errors.rs
index 6e919a8fa9f..2b43fae6852 100644
--- a/compiler/rustc_expand/src/errors.rs
+++ b/compiler/rustc_expand/src/errors.rs
@@ -1,7 +1,6 @@
 use rustc_ast::ast;
 use rustc_macros::Diagnostic;
 use rustc_session::Limit;
-use rustc_span::edition::Edition;
 use rustc_span::symbol::{Ident, MacroRulesNormalizedIdent};
 use rustc_span::{Span, Symbol};
 use std::borrow::Cow;
@@ -169,15 +168,6 @@ pub(crate) struct TakesNoArguments<'a> {
 }
 
 #[derive(Diagnostic)]
-#[diag(expand_feature_included_in_edition, code = "E0705")]
-pub(crate) struct FeatureIncludedInEdition {
-    #[primary_span]
-    pub span: Span,
-    pub feature: Symbol,
-    pub edition: Edition,
-}
-
-#[derive(Diagnostic)]
 #[diag(expand_feature_removed, code = "E0557")]
 pub(crate) struct FeatureRemoved<'a> {
     #[primary_span]
diff --git a/compiler/rustc_expand/src/mbe.rs b/compiler/rustc_expand/src/mbe.rs
index a43b2a00188..ca4a1f327ad 100644
--- a/compiler/rustc_expand/src/mbe.rs
+++ b/compiler/rustc_expand/src/mbe.rs
@@ -13,7 +13,7 @@ pub(crate) mod transcribe;
 
 use metavar_expr::MetaVarExpr;
 use rustc_ast::token::{Delimiter, NonterminalKind, Token, TokenKind};
-use rustc_ast::tokenstream::DelimSpan;
+use rustc_ast::tokenstream::{DelimSpacing, DelimSpan};
 use rustc_span::symbol::Ident;
 use rustc_span::Span;
 
@@ -68,7 +68,7 @@ pub(crate) enum KleeneOp {
 enum TokenTree {
     Token(Token),
     /// A delimited sequence, e.g. `($e:expr)` (RHS) or `{ $e }` (LHS).
-    Delimited(DelimSpan, Delimited),
+    Delimited(DelimSpan, DelimSpacing, Delimited),
     /// A kleene-style repetition sequence, e.g. `$($e:expr)*` (RHS) or `$($e),*` (LHS).
     Sequence(DelimSpan, SequenceRepetition),
     /// e.g., `$var`.
@@ -99,7 +99,7 @@ impl TokenTree {
             TokenTree::Token(Token { span, .. })
             | TokenTree::MetaVar(span, _)
             | TokenTree::MetaVarDecl(span, _, _) => span,
-            TokenTree::Delimited(span, _)
+            TokenTree::Delimited(span, ..)
             | TokenTree::MetaVarExpr(span, _)
             | TokenTree::Sequence(span, _) => span.entire(),
         }
diff --git a/compiler/rustc_expand/src/mbe/macro_check.rs b/compiler/rustc_expand/src/mbe/macro_check.rs
index 42c91824baf..0b1f25b67c8 100644
--- a/compiler/rustc_expand/src/mbe/macro_check.rs
+++ b/compiler/rustc_expand/src/mbe/macro_check.rs
@@ -290,7 +290,7 @@ fn check_binders(
         }
         // `MetaVarExpr` can not appear in the LHS of a macro arm
         TokenTree::MetaVarExpr(..) => {}
-        TokenTree::Delimited(_, ref del) => {
+        TokenTree::Delimited(.., ref del) => {
             for tt in &del.tts {
                 check_binders(sess, node_id, tt, macros, binders, ops, valid);
             }
@@ -353,7 +353,7 @@ fn check_occurrences(
             };
             check_ops_is_prefix(sess, node_id, macros, binders, ops, dl.entire(), name);
         }
-        TokenTree::Delimited(_, ref del) => {
+        TokenTree::Delimited(.., ref del) => {
             check_nested_occurrences(sess, node_id, &del.tts, macros, binders, ops, valid);
         }
         TokenTree::Sequence(_, ref seq) => {
@@ -435,8 +435,8 @@ fn check_nested_occurrences(
                 // We check that the meta-variable is correctly used.
                 check_occurrences(sess, node_id, tt, macros, binders, ops, valid);
             }
-            (NestedMacroState::MacroRulesNotName, TokenTree::Delimited(_, del))
-            | (NestedMacroState::MacroName, TokenTree::Delimited(_, del))
+            (NestedMacroState::MacroRulesNotName, TokenTree::Delimited(.., del))
+            | (NestedMacroState::MacroName, TokenTree::Delimited(.., del))
                 if del.delim == Delimiter::Brace =>
             {
                 let macro_rules = state == NestedMacroState::MacroRulesNotName;
@@ -466,7 +466,7 @@ fn check_nested_occurrences(
                 // We check that the meta-variable is correctly used.
                 check_occurrences(sess, node_id, tt, macros, binders, ops, valid);
             }
-            (NestedMacroState::MacroName, TokenTree::Delimited(_, del))
+            (NestedMacroState::MacroName, TokenTree::Delimited(.., del))
                 if del.delim == Delimiter::Parenthesis =>
             {
                 state = NestedMacroState::MacroNameParen;
@@ -481,7 +481,7 @@ fn check_nested_occurrences(
                     valid,
                 );
             }
-            (NestedMacroState::MacroNameParen, TokenTree::Delimited(_, del))
+            (NestedMacroState::MacroNameParen, TokenTree::Delimited(.., del))
                 if del.delim == Delimiter::Brace =>
             {
                 state = NestedMacroState::Empty;
diff --git a/compiler/rustc_expand/src/mbe/macro_parser.rs b/compiler/rustc_expand/src/mbe/macro_parser.rs
index 965beb9bf84..b248a1fe349 100644
--- a/compiler/rustc_expand/src/mbe/macro_parser.rs
+++ b/compiler/rustc_expand/src/mbe/macro_parser.rs
@@ -184,7 +184,7 @@ pub(super) fn compute_locs(matcher: &[TokenTree]) -> Vec<MatcherLoc> {
                 TokenTree::Token(token) => {
                     locs.push(MatcherLoc::Token { token: token.clone() });
                 }
-                TokenTree::Delimited(span, delimited) => {
+                TokenTree::Delimited(span, _, delimited) => {
                     let open_token = Token::new(token::OpenDelim(delimited.delim), span.open);
                     let close_token = Token::new(token::CloseDelim(delimited.delim), span.close);
 
@@ -335,7 +335,7 @@ pub(super) fn count_metavar_decls(matcher: &[TokenTree]) -> usize {
         .map(|tt| match tt {
             TokenTree::MetaVarDecl(..) => 1,
             TokenTree::Sequence(_, seq) => seq.num_captures,
-            TokenTree::Delimited(_, delim) => count_metavar_decls(&delim.tts),
+            TokenTree::Delimited(.., delim) => count_metavar_decls(&delim.tts),
             TokenTree::Token(..) => 0,
             TokenTree::MetaVar(..) | TokenTree::MetaVarExpr(..) => unreachable!(),
         })
diff --git a/compiler/rustc_expand/src/mbe/macro_rules.rs b/compiler/rustc_expand/src/mbe/macro_rules.rs
index 19734394382..393eec3997b 100644
--- a/compiler/rustc_expand/src/mbe/macro_rules.rs
+++ b/compiler/rustc_expand/src/mbe/macro_rules.rs
@@ -207,7 +207,7 @@ fn expand_macro<'cx>(
     match try_success_result {
         Ok((i, named_matches)) => {
             let (rhs, rhs_span): (&mbe::Delimited, DelimSpan) = match &rhses[i] {
-                mbe::TokenTree::Delimited(span, delimited) => (&delimited, *span),
+                mbe::TokenTree::Delimited(span, _, delimited) => (&delimited, *span),
                 _ => cx.span_bug(sp, "malformed macro rhs"),
             };
             let arm_span = rhses[i].span();
@@ -589,7 +589,7 @@ pub fn compile_declarative_macro(
             .map(|lhs| {
                 // Ignore the delimiters around the matcher.
                 match lhs {
-                    mbe::TokenTree::Delimited(_, delimited) => {
+                    mbe::TokenTree::Delimited(.., delimited) => {
                         mbe::macro_parser::compute_locs(&delimited.tts)
                     }
                     _ => sess.diagnostic().span_bug(def.span, "malformed macro lhs"),
@@ -615,7 +615,7 @@ pub fn compile_declarative_macro(
 fn check_lhs_nt_follows(sess: &ParseSess, def: &ast::Item, lhs: &mbe::TokenTree) -> bool {
     // lhs is going to be like TokenTree::Delimited(...), where the
     // entire lhs is those tts. Or, it can be a "bare sequence", not wrapped in parens.
-    if let mbe::TokenTree::Delimited(_, delimited) = lhs {
+    if let mbe::TokenTree::Delimited(.., delimited) = lhs {
         check_matcher(sess, def, &delimited.tts)
     } else {
         let msg = "invalid macro matcher; matchers must be contained in balanced delimiters";
@@ -668,7 +668,7 @@ fn check_lhs_no_empty_seq(sess: &ParseSess, tts: &[mbe::TokenTree]) -> bool {
             | TokenTree::MetaVar(..)
             | TokenTree::MetaVarDecl(..)
             | TokenTree::MetaVarExpr(..) => (),
-            TokenTree::Delimited(_, del) => {
+            TokenTree::Delimited(.., del) => {
                 if !check_lhs_no_empty_seq(sess, &del.tts) {
                     return false;
                 }
@@ -709,14 +709,14 @@ fn check_matcher(sess: &ParseSess, def: &ast::Item, matcher: &[mbe::TokenTree])
 
 fn has_compile_error_macro(rhs: &mbe::TokenTree) -> bool {
     match rhs {
-        mbe::TokenTree::Delimited(_sp, d) => {
+        mbe::TokenTree::Delimited(.., d) => {
             let has_compile_error = d.tts.array_windows::<3>().any(|[ident, bang, args]| {
                 if let mbe::TokenTree::Token(ident) = ident
                     && let TokenKind::Ident(ident, _) = ident.kind
                     && ident == sym::compile_error
                     && let mbe::TokenTree::Token(bang) = bang
                     && let TokenKind::Not = bang.kind
-                    && let mbe::TokenTree::Delimited(_, del) = args
+                    && let mbe::TokenTree::Delimited(.., del) = args
                     && del.delim != Delimiter::Invisible
                 {
                     true
@@ -773,7 +773,7 @@ impl<'tt> FirstSets<'tt> {
                     | TokenTree::MetaVarExpr(..) => {
                         first.replace_with(TtHandle::TtRef(tt));
                     }
-                    TokenTree::Delimited(span, delimited) => {
+                    TokenTree::Delimited(span, _, delimited) => {
                         build_recur(sets, &delimited.tts);
                         first.replace_with(TtHandle::from_token_kind(
                             token::OpenDelim(delimited.delim),
@@ -842,7 +842,7 @@ impl<'tt> FirstSets<'tt> {
                     first.add_one(TtHandle::TtRef(tt));
                     return first;
                 }
-                TokenTree::Delimited(span, delimited) => {
+                TokenTree::Delimited(span, _, delimited) => {
                     first.add_one(TtHandle::from_token_kind(
                         token::OpenDelim(delimited.delim),
                         span.open,
@@ -1087,7 +1087,7 @@ fn check_matcher_core<'tt>(
                     suffix_first = build_suffix_first();
                 }
             }
-            TokenTree::Delimited(span, d) => {
+            TokenTree::Delimited(span, _, d) => {
                 let my_suffix = TokenSet::singleton(TtHandle::from_token_kind(
                     token::CloseDelim(d.delim),
                     span.close,
diff --git a/compiler/rustc_expand/src/mbe/metavar_expr.rs b/compiler/rustc_expand/src/mbe/metavar_expr.rs
index 7cb279a9812..c29edc3dc9f 100644
--- a/compiler/rustc_expand/src/mbe/metavar_expr.rs
+++ b/compiler/rustc_expand/src/mbe/metavar_expr.rs
@@ -35,7 +35,7 @@ impl MetaVarExpr {
     ) -> PResult<'sess, MetaVarExpr> {
         let mut tts = input.trees();
         let ident = parse_ident(&mut tts, sess, outer_span)?;
-        let Some(TokenTree::Delimited(_, Delimiter::Parenthesis, args)) = tts.next() else {
+        let Some(TokenTree::Delimited(.., Delimiter::Parenthesis, args)) = tts.next() else {
             let msg = "meta-variable expression parameter must be wrapped in parentheses";
             return Err(sess.span_diagnostic.struct_span_err(ident.span, msg));
         };
diff --git a/compiler/rustc_expand/src/mbe/quoted.rs b/compiler/rustc_expand/src/mbe/quoted.rs
index 6a99412fc5b..ab9fb20b364 100644
--- a/compiler/rustc_expand/src/mbe/quoted.rs
+++ b/compiler/rustc_expand/src/mbe/quoted.rs
@@ -151,7 +151,7 @@ fn parse_tree<'a>(
             // during parsing.
             let mut next = outer_trees.next();
             let mut trees: Box<dyn Iterator<Item = &tokenstream::TokenTree>>;
-            if let Some(tokenstream::TokenTree::Delimited(_, Delimiter::Invisible, tts)) = next {
+            if let Some(tokenstream::TokenTree::Delimited(.., Delimiter::Invisible, tts)) = next {
                 trees = Box::new(tts.trees());
                 next = trees.next();
             } else {
@@ -160,7 +160,7 @@ fn parse_tree<'a>(
 
             match next {
                 // `tree` is followed by a delimited set of token trees.
-                Some(&tokenstream::TokenTree::Delimited(delim_span, delim, ref tts)) => {
+                Some(&tokenstream::TokenTree::Delimited(delim_span, _, delim, ref tts)) => {
                     if parsing_patterns {
                         if delim != Delimiter::Parenthesis {
                             span_dollar_dollar_or_metavar_in_the_lhs_err(
@@ -258,8 +258,9 @@ fn parse_tree<'a>(
 
         // `tree` is the beginning of a delimited set of tokens (e.g., `(` or `{`). We need to
         // descend into the delimited set and further parse it.
-        &tokenstream::TokenTree::Delimited(span, delim, ref tts) => TokenTree::Delimited(
+        &tokenstream::TokenTree::Delimited(span, spacing, delim, ref tts) => TokenTree::Delimited(
             span,
+            spacing,
             Delimited {
                 delim,
                 tts: parse(tts, parsing_patterns, sess, node_id, features, edition),
diff --git a/compiler/rustc_expand/src/mbe/transcribe.rs b/compiler/rustc_expand/src/mbe/transcribe.rs
index bc03fc0d1b1..18707cebcd5 100644
--- a/compiler/rustc_expand/src/mbe/transcribe.rs
+++ b/compiler/rustc_expand/src/mbe/transcribe.rs
@@ -7,7 +7,7 @@ use crate::mbe::macro_parser::{MatchedNonterminal, MatchedSeq, MatchedTokenTree,
 use crate::mbe::{self, MetaVarExpr};
 use rustc_ast::mut_visit::{self, MutVisitor};
 use rustc_ast::token::{self, Delimiter, Token, TokenKind};
-use rustc_ast::tokenstream::{DelimSpan, Spacing, TokenStream, TokenTree};
+use rustc_ast::tokenstream::{DelimSpacing, DelimSpan, Spacing, TokenStream, TokenTree};
 use rustc_data_structures::fx::FxHashMap;
 use rustc_errors::{pluralize, PResult};
 use rustc_errors::{DiagnosticBuilder, ErrorGuaranteed};
@@ -31,14 +31,24 @@ impl MutVisitor for Marker {
 
 /// An iterator over the token trees in a delimited token tree (`{ ... }`) or a sequence (`$(...)`).
 enum Frame<'a> {
-    Delimited { tts: &'a [mbe::TokenTree], idx: usize, delim: Delimiter, span: DelimSpan },
-    Sequence { tts: &'a [mbe::TokenTree], idx: usize, sep: Option<Token> },
+    Delimited {
+        tts: &'a [mbe::TokenTree],
+        idx: usize,
+        delim: Delimiter,
+        span: DelimSpan,
+        spacing: DelimSpacing,
+    },
+    Sequence {
+        tts: &'a [mbe::TokenTree],
+        idx: usize,
+        sep: Option<Token>,
+    },
 }
 
 impl<'a> Frame<'a> {
     /// Construct a new frame around the delimited set of tokens.
-    fn new(src: &'a mbe::Delimited, span: DelimSpan) -> Frame<'a> {
-        Frame::Delimited { tts: &src.tts, idx: 0, delim: src.delim, span }
+    fn new(src: &'a mbe::Delimited, span: DelimSpan, spacing: DelimSpacing) -> Frame<'a> {
+        Frame::Delimited { tts: &src.tts, idx: 0, delim: src.delim, span, spacing }
     }
 }
 
@@ -89,8 +99,10 @@ pub(super) fn transcribe<'a>(
     }
 
     // We descend into the RHS (`src`), expanding things as we go. This stack contains the things
-    // we have yet to expand/are still expanding. We start the stack off with the whole RHS.
-    let mut stack: SmallVec<[Frame<'_>; 1]> = smallvec![Frame::new(src, src_span)];
+    // we have yet to expand/are still expanding. We start the stack off with the whole RHS. The
+    // choice of spacing values doesn't matter.
+    let mut stack: SmallVec<[Frame<'_>; 1]> =
+        smallvec![Frame::new(src, src_span, DelimSpacing::new(Spacing::Alone, Spacing::Alone))];
 
     // As we descend in the RHS, we will need to be able to match nested sequences of matchers.
     // `repeats` keeps track of where we are in matching at each level, with the last element being
@@ -144,14 +156,19 @@ pub(super) fn transcribe<'a>(
                 // We are done processing a Delimited. If this is the top-level delimited, we are
                 // done. Otherwise, we unwind the result_stack to append what we have produced to
                 // any previous results.
-                Frame::Delimited { delim, span, .. } => {
+                Frame::Delimited { delim, span, mut spacing, .. } => {
+                    // Hack to force-insert a space after `]` in certain case.
+                    // See discussion of the `hex-literal` crate in #114571.
+                    if delim == Delimiter::Bracket {
+                        spacing.close = Spacing::Alone;
+                    }
                     if result_stack.is_empty() {
                         // No results left to compute! We are back at the top-level.
                         return Ok(TokenStream::new(result));
                     }
 
                     // Step back into the parent Delimited.
-                    let tree = TokenTree::Delimited(span, delim, TokenStream::new(result));
+                    let tree = TokenTree::Delimited(span, spacing, delim, TokenStream::new(result));
                     result = result_stack.pop().unwrap();
                     result.push(tree);
                 }
@@ -240,7 +257,7 @@ pub(super) fn transcribe<'a>(
                     // with modified syntax context. (I believe this supports nested macros).
                     marker.visit_span(&mut sp);
                     marker.visit_ident(&mut original_ident);
-                    result.push(TokenTree::token_alone(token::Dollar, sp));
+                    result.push(TokenTree::token_joint_hidden(token::Dollar, sp));
                     result.push(TokenTree::Token(
                         Token::from_ast_ident(original_ident),
                         Spacing::Alone,
@@ -258,13 +275,14 @@ pub(super) fn transcribe<'a>(
             // We will produce all of the results of the inside of the `Delimited` and then we will
             // jump back out of the Delimited, pop the result_stack and add the new results back to
             // the previous results (from outside the Delimited).
-            mbe::TokenTree::Delimited(mut span, delimited) => {
+            mbe::TokenTree::Delimited(mut span, spacing, delimited) => {
                 mut_visit::visit_delim_span(&mut span, &mut marker);
                 stack.push(Frame::Delimited {
                     tts: &delimited.tts,
                     delim: delimited.delim,
                     idx: 0,
                     span,
+                    spacing: *spacing,
                 });
                 result_stack.push(mem::take(&mut result));
             }
@@ -374,7 +392,7 @@ fn lockstep_iter_size(
 ) -> LockstepIterSize {
     use mbe::TokenTree;
     match tree {
-        TokenTree::Delimited(_, delimited) => {
+        TokenTree::Delimited(.., delimited) => {
             delimited.tts.iter().fold(LockstepIterSize::Unconstrained, |size, tt| {
                 size.with(lockstep_iter_size(tt, interpolations, repeats))
             })
diff --git a/compiler/rustc_expand/src/parse/tests.rs b/compiler/rustc_expand/src/parse/tests.rs
index bdc20882a9d..7a888250ca1 100644
--- a/compiler/rustc_expand/src/parse/tests.rs
+++ b/compiler/rustc_expand/src/parse/tests.rs
@@ -4,7 +4,7 @@ use crate::tests::{
 
 use rustc_ast::ptr::P;
 use rustc_ast::token::{self, Delimiter, Token};
-use rustc_ast::tokenstream::{DelimSpan, TokenStream, TokenTree};
+use rustc_ast::tokenstream::{DelimSpacing, DelimSpan, Spacing, TokenStream, TokenTree};
 use rustc_ast::visit;
 use rustc_ast::{self as ast, PatKind};
 use rustc_ast_pretty::pprust::item_to_string;
@@ -77,14 +77,14 @@ fn string_to_tts_macro() {
                 TokenTree::Token(Token { kind: token::Ident(name_macro_rules, false), .. }, _),
                 TokenTree::Token(Token { kind: token::Not, .. }, _),
                 TokenTree::Token(Token { kind: token::Ident(name_zip, false), .. }, _),
-                TokenTree::Delimited(_, macro_delim, macro_tts),
+                TokenTree::Delimited(.., macro_delim, macro_tts),
             ] if name_macro_rules == &kw::MacroRules && name_zip.as_str() == "zip" => {
                 let tts = &macro_tts.trees().collect::<Vec<_>>();
                 match &tts[..] {
                     [
-                        TokenTree::Delimited(_, first_delim, first_tts),
+                        TokenTree::Delimited(.., first_delim, first_tts),
                         TokenTree::Token(Token { kind: token::FatArrow, .. }, _),
-                        TokenTree::Delimited(_, second_delim, second_tts),
+                        TokenTree::Delimited(.., second_delim, second_tts),
                     ] if macro_delim == &Delimiter::Parenthesis => {
                         let tts = &first_tts.trees().collect::<Vec<_>>();
                         match &tts[..] {
@@ -116,27 +116,36 @@ fn string_to_tts_macro() {
 #[test]
 fn string_to_tts_1() {
     create_default_session_globals_then(|| {
-        let tts = string_to_stream("fn a (b : i32) { b; }".to_string());
+        let tts = string_to_stream("fn a(b: i32) { b; }".to_string());
 
         let expected = TokenStream::new(vec![
             TokenTree::token_alone(token::Ident(kw::Fn, false), sp(0, 2)),
-            TokenTree::token_alone(token::Ident(Symbol::intern("a"), false), sp(3, 4)),
+            TokenTree::token_joint_hidden(token::Ident(Symbol::intern("a"), false), sp(3, 4)),
             TokenTree::Delimited(
-                DelimSpan::from_pair(sp(5, 6), sp(13, 14)),
+                DelimSpan::from_pair(sp(4, 5), sp(11, 12)),
+                // `JointHidden` because the `(` is followed immediately by
+                // `b`, `Alone` because the `)` is followed by whitespace.
+                DelimSpacing::new(Spacing::JointHidden, Spacing::Alone),
                 Delimiter::Parenthesis,
                 TokenStream::new(vec![
-                    TokenTree::token_alone(token::Ident(Symbol::intern("b"), false), sp(6, 7)),
-                    TokenTree::token_alone(token::Colon, sp(8, 9)),
-                    TokenTree::token_alone(token::Ident(sym::i32, false), sp(10, 13)),
+                    TokenTree::token_joint(token::Ident(Symbol::intern("b"), false), sp(5, 6)),
+                    TokenTree::token_alone(token::Colon, sp(6, 7)),
+                    // `JointHidden` because the `i32` is immediately followed by the `)`.
+                    TokenTree::token_joint_hidden(token::Ident(sym::i32, false), sp(8, 11)),
                 ])
                 .into(),
             ),
             TokenTree::Delimited(
-                DelimSpan::from_pair(sp(15, 16), sp(20, 21)),
+                DelimSpan::from_pair(sp(13, 14), sp(18, 19)),
+                // First `Alone` because the `{` is followed by whitespace,
+                // second `Alone` because the `}` is followed immediately by
+                // EOF.
+                DelimSpacing::new(Spacing::Alone, Spacing::Alone),
                 Delimiter::Brace,
                 TokenStream::new(vec![
-                    TokenTree::token_joint(token::Ident(Symbol::intern("b"), false), sp(17, 18)),
-                    TokenTree::token_alone(token::Semi, sp(18, 19)),
+                    TokenTree::token_joint(token::Ident(Symbol::intern("b"), false), sp(15, 16)),
+                    // `Alone` because the `;` is followed by whitespace.
+                    TokenTree::token_alone(token::Semi, sp(16, 17)),
                 ])
                 .into(),
             ),
diff --git a/compiler/rustc_expand/src/proc_macro_server.rs b/compiler/rustc_expand/src/proc_macro_server.rs
index b057a645f81..5308e338d7f 100644
--- a/compiler/rustc_expand/src/proc_macro_server.rs
+++ b/compiler/rustc_expand/src/proc_macro_server.rs
@@ -5,7 +5,7 @@ use pm::bridge::{
 use pm::{Delimiter, Level};
 use rustc_ast as ast;
 use rustc_ast::token;
-use rustc_ast::tokenstream::{self, Spacing::*, TokenStream};
+use rustc_ast::tokenstream::{self, DelimSpacing, Spacing, TokenStream};
 use rustc_ast::util::literal::escape_byte_str_symbol;
 use rustc_ast_pretty::pprust;
 use rustc_data_structures::fx::FxHashMap;
@@ -98,7 +98,7 @@ impl FromInternal<(TokenStream, &mut Rustc<'_, '_>)> for Vec<TokenTree<TokenStre
 
         while let Some(tree) = cursor.next() {
             let (Token { kind, span }, joint) = match tree.clone() {
-                tokenstream::TokenTree::Delimited(span, delim, tts) => {
+                tokenstream::TokenTree::Delimited(span, _, delim, tts) => {
                     let delimiter = pm::Delimiter::from_internal(delim);
                     trees.push(TokenTree::Group(Group {
                         delimiter,
@@ -111,7 +111,22 @@ impl FromInternal<(TokenStream, &mut Rustc<'_, '_>)> for Vec<TokenTree<TokenStre
                     }));
                     continue;
                 }
-                tokenstream::TokenTree::Token(token, spacing) => (token, spacing == Joint),
+                tokenstream::TokenTree::Token(token, spacing) => {
+                    // Do not be tempted to check here that the `spacing`
+                    // values are "correct" w.r.t. the token stream (e.g. that
+                    // `Spacing::Joint` is actually followed by a `Punct` token
+                    // tree). Because the problem in #76399 was introduced that
+                    // way.
+                    //
+                    // This is where the `Hidden` in `JointHidden` applies,
+                    // because the jointness is effectively hidden from proc
+                    // macros.
+                    let joint = match spacing {
+                        Spacing::Alone | Spacing::JointHidden => false,
+                        Spacing::Joint => true,
+                    };
+                    (token, joint)
+                }
             };
 
             // Split the operator into one or more `Punct`s, one per character.
@@ -133,7 +148,8 @@ impl FromInternal<(TokenStream, &mut Rustc<'_, '_>)> for Vec<TokenTree<TokenStre
                     } else {
                         span
                     };
-                    TokenTree::Punct(Punct { ch, joint: if is_final { joint } else { true }, span })
+                    let joint = if is_final { joint } else { true };
+                    TokenTree::Punct(Punct { ch, joint, span })
                 }));
             };
 
@@ -268,6 +284,11 @@ impl ToInternal<SmallVec<[tokenstream::TokenTree; 2]>>
     fn to_internal(self) -> SmallVec<[tokenstream::TokenTree; 2]> {
         use rustc_ast::token::*;
 
+        // The code below is conservative, using `token_alone`/`Spacing::Alone`
+        // in most places. When the resulting code is pretty-printed by
+        // `print_tts` it ends up with spaces between most tokens, which is
+        // safe but ugly. It's hard in general to do better when working at the
+        // token level.
         let (tree, rustc) = self;
         match tree {
             TokenTree::Punct(Punct { ch, joint, span }) => {
@@ -296,6 +317,11 @@ impl ToInternal<SmallVec<[tokenstream::TokenTree; 2]>>
                     b'\'' => SingleQuote,
                     _ => unreachable!(),
                 };
+                // We never produce `token::Spacing::JointHidden` here, which
+                // means the pretty-printing of code produced by proc macros is
+                // ugly, with lots of whitespace between tokens. This is
+                // unavoidable because `proc_macro::Spacing` only applies to
+                // `Punct` token trees.
                 smallvec![if joint {
                     tokenstream::TokenTree::token_joint(kind, span)
                 } else {
@@ -305,6 +331,7 @@ impl ToInternal<SmallVec<[tokenstream::TokenTree; 2]>>
             TokenTree::Group(Group { delimiter, stream, span: DelimSpan { open, close, .. } }) => {
                 smallvec![tokenstream::TokenTree::Delimited(
                     tokenstream::DelimSpan { open, close },
+                    DelimSpacing::new(Spacing::Alone, Spacing::Alone),
                     delimiter.to_internal(),
                     stream.unwrap_or_default(),
                 )]
@@ -322,7 +349,7 @@ impl ToInternal<SmallVec<[tokenstream::TokenTree; 2]>>
                 let minus = BinOp(BinOpToken::Minus);
                 let symbol = Symbol::intern(&symbol.as_str()[1..]);
                 let integer = TokenKind::lit(token::Integer, symbol, suffix);
-                let a = tokenstream::TokenTree::token_alone(minus, span);
+                let a = tokenstream::TokenTree::token_joint_hidden(minus, span);
                 let b = tokenstream::TokenTree::token_alone(integer, span);
                 smallvec![a, b]
             }
@@ -335,7 +362,7 @@ impl ToInternal<SmallVec<[tokenstream::TokenTree; 2]>>
                 let minus = BinOp(BinOpToken::Minus);
                 let symbol = Symbol::intern(&symbol.as_str()[1..]);
                 let float = TokenKind::lit(token::Float, symbol, suffix);
-                let a = tokenstream::TokenTree::token_alone(minus, span);
+                let a = tokenstream::TokenTree::token_joint_hidden(minus, span);
                 let b = tokenstream::TokenTree::token_alone(float, span);
                 smallvec![a, b]
             }
@@ -546,7 +573,10 @@ impl server::TokenStream for Rustc<'_, '_> {
                         Ok(Self::TokenStream::from_iter([
                             // FIXME: The span of the `-` token is lost when
                             // parsing, so we cannot faithfully recover it here.
-                            tokenstream::TokenTree::token_alone(token::BinOp(token::Minus), e.span),
+                            tokenstream::TokenTree::token_joint_hidden(
+                                token::BinOp(token::Minus),
+                                e.span,
+                            ),
                             tokenstream::TokenTree::token_alone(token::Literal(*token_lit), e.span),
                         ]))
                     }
diff --git a/compiler/rustc_feature/src/accepted.rs b/compiler/rustc_feature/src/accepted.rs
index 94e79144593..4993112089a 100644
--- a/compiler/rustc_feature/src/accepted.rs
+++ b/compiler/rustc_feature/src/accepted.rs
@@ -5,7 +5,7 @@ use rustc_span::symbol::sym;
 
 macro_rules! declare_features {
     ($(
-        $(#[doc = $doc:tt])* (accepted, $feature:ident, $ver:expr, $issue:expr, None),
+        $(#[doc = $doc:tt])* (accepted, $feature:ident, $ver:expr, $issue:expr),
     )+) => {
         /// Formerly unstable features that have now been accepted (stabilized).
         pub const ACCEPTED_FEATURES: &[Feature] = &[
@@ -13,7 +13,6 @@ macro_rules! declare_features {
                 name: sym::$feature,
                 since: $ver,
                 issue: to_nonzero($issue),
-                edition: None,
             }),+
         ];
     }
@@ -27,10 +26,10 @@ declare_features! (
 
     /// A temporary feature gate used to enable parser extensions needed
     /// to bootstrap fix for #5723.
-    (accepted, issue_5723_bootstrap, "1.0.0", None, None),
+    (accepted, issue_5723_bootstrap, "1.0.0", None),
     /// These are used to test this portion of the compiler,
     /// they don't actually mean anything.
-    (accepted, test_accepted_feature, "1.0.0", None, None),
+    (accepted, test_accepted_feature, "1.0.0", None),
     // !!!!    !!!!    !!!!    !!!!   !!!!    !!!!    !!!!    !!!!    !!!!    !!!!    !!!!
     // Features are listed in alphabetical order. Tidy will fail if you don't keep it this way.
     // !!!!    !!!!    !!!!    !!!!   !!!!    !!!!    !!!!    !!!!    !!!!    !!!!    !!!!
@@ -44,338 +43,338 @@ declare_features! (
     // -------------------------------------------------------------------------
 
     /// Allows `#[target_feature(...)]` on aarch64 platforms
-    (accepted, aarch64_target_feature, "1.61.0", Some(44839), None),
+    (accepted, aarch64_target_feature, "1.61.0", Some(44839)),
     /// Allows using the `efiapi` ABI.
-    (accepted, abi_efiapi, "1.68.0", Some(65815), None),
+    (accepted, abi_efiapi, "1.68.0", Some(65815)),
     /// Allows the sysV64 ABI to be specified on all platforms
     /// instead of just the platforms on which it is the C ABI.
-    (accepted, abi_sysv64, "1.24.0", Some(36167), None),
+    (accepted, abi_sysv64, "1.24.0", Some(36167)),
     /// Allows using the `thiscall` ABI.
-    (accepted, abi_thiscall, "1.73.0", None, None),
+    (accepted, abi_thiscall, "1.73.0", None),
     /// Allows using ADX intrinsics from `core::arch::{x86, x86_64}`.
-    (accepted, adx_target_feature, "1.61.0", Some(44839), None),
+    (accepted, adx_target_feature, "1.61.0", Some(44839)),
     /// Allows explicit discriminants on non-unit enum variants.
-    (accepted, arbitrary_enum_discriminant, "1.66.0", Some(60553), None),
+    (accepted, arbitrary_enum_discriminant, "1.66.0", Some(60553)),
     /// Allows using `sym` operands in inline assembly.
-    (accepted, asm_sym, "1.66.0", Some(93333), None),
+    (accepted, asm_sym, "1.66.0", Some(93333)),
     /// Allows the definition of associated constants in `trait` or `impl` blocks.
-    (accepted, associated_consts, "1.20.0", Some(29646), None),
+    (accepted, associated_consts, "1.20.0", Some(29646)),
     /// Allows using associated `type`s in `trait`s.
-    (accepted, associated_types, "1.0.0", None, None),
+    (accepted, associated_types, "1.0.0", None),
     /// Allows free and inherent `async fn`s, `async` blocks, and `<expr>.await` expressions.
-    (accepted, async_await, "1.39.0", Some(50547), None),
+    (accepted, async_await, "1.39.0", Some(50547)),
     /// Allows async functions to be declared, implemented, and used in traits.
-    (accepted, async_fn_in_trait, "1.75.0", Some(91611), None),
+    (accepted, async_fn_in_trait, "1.75.0", Some(91611)),
     /// Allows all literals in attribute lists and values of key-value pairs.
-    (accepted, attr_literals, "1.30.0", Some(34981), None),
+    (accepted, attr_literals, "1.30.0", Some(34981)),
     /// Allows overloading augmented assignment operations like `a += b`.
-    (accepted, augmented_assignments, "1.8.0", Some(28235), None),
+    (accepted, augmented_assignments, "1.8.0", Some(28235)),
     /// Allows mixing bind-by-move in patterns and references to those identifiers in guards.
-    (accepted, bind_by_move_pattern_guards, "1.39.0", Some(15287), None),
+    (accepted, bind_by_move_pattern_guards, "1.39.0", Some(15287)),
     /// Allows bindings in the subpattern of a binding pattern.
     /// For example, you can write `x @ Some(y)`.
-    (accepted, bindings_after_at, "1.56.0", Some(65490), None),
+    (accepted, bindings_after_at, "1.56.0", Some(65490)),
     /// Allows empty structs and enum variants with braces.
-    (accepted, braced_empty_structs, "1.8.0", Some(29720), None),
+    (accepted, braced_empty_structs, "1.8.0", Some(29720)),
     /// Allows `c"foo"` literals.
-    (accepted, c_str_literals, "CURRENT_RUSTC_VERSION", Some(105723), None),
+    (accepted, c_str_literals, "CURRENT_RUSTC_VERSION", Some(105723)),
     /// Allows `#[cfg_attr(predicate, multiple, attributes, here)]`.
-    (accepted, cfg_attr_multi, "1.33.0", Some(54881), None),
+    (accepted, cfg_attr_multi, "1.33.0", Some(54881)),
     /// Allows the use of `#[cfg(doctest)]`, set when rustdoc is collecting doctests.
-    (accepted, cfg_doctest, "1.40.0", Some(62210), None),
+    (accepted, cfg_doctest, "1.40.0", Some(62210)),
     /// Enables `#[cfg(panic = "...")]` config key.
-    (accepted, cfg_panic, "1.60.0", Some(77443), None),
+    (accepted, cfg_panic, "1.60.0", Some(77443)),
     /// Allows `cfg(target_feature = "...")`.
-    (accepted, cfg_target_feature, "1.27.0", Some(29717), None),
+    (accepted, cfg_target_feature, "1.27.0", Some(29717)),
     /// Allows `cfg(target_vendor = "...")`.
-    (accepted, cfg_target_vendor, "1.33.0", Some(29718), None),
+    (accepted, cfg_target_vendor, "1.33.0", Some(29718)),
     /// Allows implementing `Clone` for closures where possible (RFC 2132).
-    (accepted, clone_closures, "1.26.0", Some(44490), None),
+    (accepted, clone_closures, "1.26.0", Some(44490)),
     /// Allows coercing non capturing closures to function pointers.
-    (accepted, closure_to_fn_coercion, "1.19.0", Some(39817), None),
+    (accepted, closure_to_fn_coercion, "1.19.0", Some(39817)),
     /// Allows using the CMPXCHG16B target feature.
-    (accepted, cmpxchg16b_target_feature, "1.69.0", Some(44839), None),
+    (accepted, cmpxchg16b_target_feature, "1.69.0", Some(44839)),
     /// Allows usage of the `compile_error!` macro.
-    (accepted, compile_error, "1.20.0", Some(40872), None),
+    (accepted, compile_error, "1.20.0", Some(40872)),
     /// Allows `impl Trait` in function return types.
-    (accepted, conservative_impl_trait, "1.26.0", Some(34511), None),
+    (accepted, conservative_impl_trait, "1.26.0", Some(34511)),
     /// Allows calling constructor functions in `const fn`.
-    (accepted, const_constructor, "1.40.0", Some(61456), None),
+    (accepted, const_constructor, "1.40.0", Some(61456)),
     /// Allows using and casting function pointers in a `const fn`.
-    (accepted, const_fn_fn_ptr_basics, "1.61.0", Some(57563), None),
+    (accepted, const_fn_fn_ptr_basics, "1.61.0", Some(57563)),
     /// Allows trait bounds in `const fn`.
-    (accepted, const_fn_trait_bound, "1.61.0", Some(93706), None),
+    (accepted, const_fn_trait_bound, "1.61.0", Some(93706)),
     /// Allows calling `transmute` in const fn
-    (accepted, const_fn_transmute, "1.56.0", Some(53605), None),
+    (accepted, const_fn_transmute, "1.56.0", Some(53605)),
     /// Allows accessing fields of unions inside `const` functions.
-    (accepted, const_fn_union, "1.56.0", Some(51909), None),
+    (accepted, const_fn_union, "1.56.0", Some(51909)),
     /// Allows unsizing coercions in `const fn`.
-    (accepted, const_fn_unsize, "1.54.0", Some(64992), None),
+    (accepted, const_fn_unsize, "1.54.0", Some(64992)),
     /// Allows const generics to have default values (e.g. `struct Foo<const N: usize = 3>(...);`).
-    (accepted, const_generics_defaults, "1.59.0", Some(44580), None),
+    (accepted, const_generics_defaults, "1.59.0", Some(44580)),
     /// Allows the use of `if` and `match` in constants.
-    (accepted, const_if_match, "1.46.0", Some(49146), None),
+    (accepted, const_if_match, "1.46.0", Some(49146)),
     /// Allows argument and return position `impl Trait` in a `const fn`.
-    (accepted, const_impl_trait, "1.61.0", Some(77463), None),
+    (accepted, const_impl_trait, "1.61.0", Some(77463)),
     /// Allows indexing into constant arrays.
-    (accepted, const_indexing, "1.26.0", Some(29947), None),
+    (accepted, const_indexing, "1.26.0", Some(29947)),
     /// Allows let bindings, assignments and destructuring in `const` functions and constants.
     /// As long as control flow is not implemented in const eval, `&&` and `||` may not be used
     /// at the same time as let bindings.
-    (accepted, const_let, "1.33.0", Some(48821), None),
+    (accepted, const_let, "1.33.0", Some(48821)),
     /// Allows the use of `loop` and `while` in constants.
-    (accepted, const_loop, "1.46.0", Some(52000), None),
+    (accepted, const_loop, "1.46.0", Some(52000)),
     /// Allows panicking during const eval (producing compile-time errors).
-    (accepted, const_panic, "1.57.0", Some(51999), None),
+    (accepted, const_panic, "1.57.0", Some(51999)),
     /// Allows dereferencing raw pointers during const eval.
-    (accepted, const_raw_ptr_deref, "1.58.0", Some(51911), None),
+    (accepted, const_raw_ptr_deref, "1.58.0", Some(51911)),
     /// Allows implementing `Copy` for closures where possible (RFC 2132).
-    (accepted, copy_closures, "1.26.0", Some(44490), None),
+    (accepted, copy_closures, "1.26.0", Some(44490)),
     /// Allows `crate` in paths.
-    (accepted, crate_in_paths, "1.30.0", Some(45477), None),
+    (accepted, crate_in_paths, "1.30.0", Some(45477)),
     /// Allows using `#[debugger_visualizer]` attribute.
-    (accepted, debugger_visualizer, "1.71.0", Some(95939), None),
+    (accepted, debugger_visualizer, "1.71.0", Some(95939)),
     /// Allows rustc to inject a default alloc_error_handler
-    (accepted, default_alloc_error_handler, "1.68.0", Some(66741), None),
+    (accepted, default_alloc_error_handler, "1.68.0", Some(66741)),
     /// Allows using assigning a default type to type parameters in algebraic data type definitions.
-    (accepted, default_type_params, "1.0.0", None, None),
+    (accepted, default_type_params, "1.0.0", None),
     /// Allows `#[deprecated]` attribute.
-    (accepted, deprecated, "1.9.0", Some(29935), None),
+    (accepted, deprecated, "1.9.0", Some(29935)),
     /// Allows `#[derive(Default)]` and `#[default]` on enums.
-    (accepted, derive_default_enum, "1.62.0", Some(86985), None),
+    (accepted, derive_default_enum, "1.62.0", Some(86985)),
     /// Allows the use of destructuring assignments.
-    (accepted, destructuring_assignment, "1.59.0", Some(71126), None),
+    (accepted, destructuring_assignment, "1.59.0", Some(71126)),
     /// Allows `#[doc(alias = "...")]`.
-    (accepted, doc_alias, "1.48.0", Some(50146), None),
+    (accepted, doc_alias, "1.48.0", Some(50146)),
     /// Allows `..` in tuple (struct) patterns.
-    (accepted, dotdot_in_tuple_patterns, "1.14.0", Some(33627), None),
+    (accepted, dotdot_in_tuple_patterns, "1.14.0", Some(33627)),
     /// Allows `..=` in patterns (RFC 1192).
-    (accepted, dotdoteq_in_patterns, "1.26.0", Some(28237), None),
+    (accepted, dotdoteq_in_patterns, "1.26.0", Some(28237)),
     /// Allows `Drop` types in constants (RFC 1440).
-    (accepted, drop_types_in_const, "1.22.0", Some(33156), None),
+    (accepted, drop_types_in_const, "1.22.0", Some(33156)),
     /// Allows using `dyn Trait` as a syntax for trait objects.
-    (accepted, dyn_trait, "1.27.0", Some(44662), None),
+    (accepted, dyn_trait, "1.27.0", Some(44662)),
     /// Allows integer match exhaustiveness checking (RFC 2591).
-    (accepted, exhaustive_integer_patterns, "1.33.0", Some(50907), None),
+    (accepted, exhaustive_integer_patterns, "1.33.0", Some(50907)),
     /// Allows explicit generic arguments specification with `impl Trait` present.
-    (accepted, explicit_generic_args_with_impl_trait, "1.63.0", Some(83701), None),
+    (accepted, explicit_generic_args_with_impl_trait, "1.63.0", Some(83701)),
     /// Allows arbitrary expressions in key-value attributes at parse time.
-    (accepted, extended_key_value_attributes, "1.54.0", Some(78835), None),
+    (accepted, extended_key_value_attributes, "1.54.0", Some(78835)),
     /// Allows resolving absolute paths as paths from other crates.
-    (accepted, extern_absolute_paths, "1.30.0", Some(44660), None),
+    (accepted, extern_absolute_paths, "1.30.0", Some(44660)),
     /// Allows `extern crate foo as bar;`. This puts `bar` into extern prelude.
-    (accepted, extern_crate_item_prelude, "1.31.0", Some(55599), None),
+    (accepted, extern_crate_item_prelude, "1.31.0", Some(55599)),
     /// Allows `extern crate self as foo;`.
     /// This puts local crate root into extern prelude under name `foo`.
-    (accepted, extern_crate_self, "1.34.0", Some(56409), None),
+    (accepted, extern_crate_self, "1.34.0", Some(56409)),
     /// Allows access to crate names passed via `--extern` through prelude.
-    (accepted, extern_prelude, "1.30.0", Some(44660), None),
+    (accepted, extern_prelude, "1.30.0", Some(44660)),
     /// Allows using F16C intrinsics from `core::arch::{x86, x86_64}`.
-    (accepted, f16c_target_feature, "1.68.0", Some(44839), None),
+    (accepted, f16c_target_feature, "1.68.0", Some(44839)),
     /// Allows field shorthands (`x` meaning `x: x`) in struct literal expressions.
-    (accepted, field_init_shorthand, "1.17.0", Some(37340), None),
+    (accepted, field_init_shorthand, "1.17.0", Some(37340)),
     /// Allows `#[must_use]` on functions, and introduces must-use operators (RFC 1940).
-    (accepted, fn_must_use, "1.27.0", Some(43302), None),
+    (accepted, fn_must_use, "1.27.0", Some(43302)),
     /// Allows capturing variables in scope using format_args!
-    (accepted, format_args_capture, "1.58.0", Some(67984), None),
+    (accepted, format_args_capture, "1.58.0", Some(67984)),
     /// Allows associated types to be generic, e.g., `type Foo<T>;` (RFC 1598).
-    (accepted, generic_associated_types, "1.65.0", Some(44265), None),
+    (accepted, generic_associated_types, "1.65.0", Some(44265)),
     /// Allows attributes on lifetime/type formal parameters in generics (RFC 1327).
-    (accepted, generic_param_attrs, "1.27.0", Some(48848), None),
+    (accepted, generic_param_attrs, "1.27.0", Some(48848)),
     /// Allows the `#[global_allocator]` attribute.
-    (accepted, global_allocator, "1.28.0", Some(27389), None),
+    (accepted, global_allocator, "1.28.0", Some(27389)),
     // FIXME: explain `globs`.
-    (accepted, globs, "1.0.0", None, None),
+    (accepted, globs, "1.0.0", None),
     /// Allows using `..=X` as a pattern.
-    (accepted, half_open_range_patterns, "1.66.0", Some(67264), None),
+    (accepted, half_open_range_patterns, "1.66.0", Some(67264)),
     /// Allows using the `u128` and `i128` types.
-    (accepted, i128_type, "1.26.0", Some(35118), None),
+    (accepted, i128_type, "1.26.0", Some(35118)),
     /// Allows the use of `if let` expressions.
-    (accepted, if_let, "1.0.0", None, None),
+    (accepted, if_let, "1.0.0", None),
     /// Allows top level or-patterns (`p | q`) in `if let` and `while let`.
-    (accepted, if_while_or_patterns, "1.33.0", Some(48215), None),
+    (accepted, if_while_or_patterns, "1.33.0", Some(48215)),
     /// Allows lifetime elision in `impl` headers. For example:
     /// + `impl<I:Iterator> Iterator for &mut Iterator`
     /// + `impl Debug for Foo<'_>`
-    (accepted, impl_header_lifetime_elision, "1.31.0", Some(15872), None),
+    (accepted, impl_header_lifetime_elision, "1.31.0", Some(15872)),
     /// Allows referencing `Self` and projections in impl-trait.
-    (accepted, impl_trait_projections, "1.74.0", Some(103532), None),
+    (accepted, impl_trait_projections, "1.74.0", Some(103532)),
     /// Allows using `a..=b` and `..=b` as inclusive range syntaxes.
-    (accepted, inclusive_range_syntax, "1.26.0", Some(28237), None),
+    (accepted, inclusive_range_syntax, "1.26.0", Some(28237)),
     /// Allows inferring outlives requirements (RFC 2093).
-    (accepted, infer_outlives_requirements, "1.30.0", Some(44493), None),
+    (accepted, infer_outlives_requirements, "1.30.0", Some(44493)),
     /// Allows irrefutable patterns in `if let` and `while let` statements (RFC 2086).
-    (accepted, irrefutable_let_patterns, "1.33.0", Some(44495), None),
+    (accepted, irrefutable_let_patterns, "1.33.0", Some(44495)),
     /// Allows `#[instruction_set(_)]` attribute.
-    (accepted, isa_attribute, "1.67.0", Some(74727), None),
+    (accepted, isa_attribute, "1.67.0", Some(74727)),
     /// Allows some increased flexibility in the name resolution rules,
     /// especially around globs and shadowing (RFC 1560).
-    (accepted, item_like_imports, "1.15.0", Some(35120), None),
+    (accepted, item_like_imports, "1.15.0", Some(35120)),
     /// Allows `'a: { break 'a; }`.
-    (accepted, label_break_value, "1.65.0", Some(48594), None),
+    (accepted, label_break_value, "1.65.0", Some(48594)),
     /// Allows `let...else` statements.
-    (accepted, let_else, "1.65.0", Some(87335), None),
+    (accepted, let_else, "1.65.0", Some(87335)),
     /// Allows `break {expr}` with a value inside `loop`s.
-    (accepted, loop_break_value, "1.19.0", Some(37339), None),
+    (accepted, loop_break_value, "1.19.0", Some(37339)),
     /// Allows use of `?` as the Kleene "at most one" operator in macros.
-    (accepted, macro_at_most_once_rep, "1.32.0", Some(48075), None),
+    (accepted, macro_at_most_once_rep, "1.32.0", Some(48075)),
     /// Allows macro attributes to observe output of `#[derive]`.
-    (accepted, macro_attributes_in_derive_output, "1.57.0", Some(81119), None),
+    (accepted, macro_attributes_in_derive_output, "1.57.0", Some(81119)),
     /// Allows use of the `:lifetime` macro fragment specifier.
-    (accepted, macro_lifetime_matcher, "1.27.0", Some(34303), None),
+    (accepted, macro_lifetime_matcher, "1.27.0", Some(34303)),
     /// Allows use of the `:literal` macro fragment specifier (RFC 1576).
-    (accepted, macro_literal_matcher, "1.32.0", Some(35625), None),
+    (accepted, macro_literal_matcher, "1.32.0", Some(35625)),
     /// Allows `macro_rules!` items.
-    (accepted, macro_rules, "1.0.0", None, None),
+    (accepted, macro_rules, "1.0.0", None),
     /// Allows use of the `:vis` macro fragment specifier
-    (accepted, macro_vis_matcher, "1.30.0", Some(41022), None),
+    (accepted, macro_vis_matcher, "1.30.0", Some(41022)),
     /// Allows macro invocations in `extern {}` blocks.
-    (accepted, macros_in_extern, "1.40.0", Some(49476), None),
+    (accepted, macros_in_extern, "1.40.0", Some(49476)),
     /// Allows '|' at beginning of match arms (RFC 1925).
-    (accepted, match_beginning_vert, "1.25.0", Some(44101), None),
+    (accepted, match_beginning_vert, "1.25.0", Some(44101)),
     /// Allows default match binding modes (RFC 2005).
-    (accepted, match_default_bindings, "1.26.0", Some(42640), None),
+    (accepted, match_default_bindings, "1.26.0", Some(42640)),
     /// Allows `impl Trait` with multiple unrelated lifetimes.
-    (accepted, member_constraints, "1.54.0", Some(61997), None),
+    (accepted, member_constraints, "1.54.0", Some(61997)),
     /// Allows the definition of `const fn` functions.
-    (accepted, min_const_fn, "1.31.0", Some(53555), None),
+    (accepted, min_const_fn, "1.31.0", Some(53555)),
     /// The smallest useful subset of const generics.
-    (accepted, min_const_generics, "1.51.0", Some(74878), None),
+    (accepted, min_const_generics, "1.51.0", Some(74878)),
     /// Allows calling `const unsafe fn` inside `unsafe` blocks in `const fn` functions.
-    (accepted, min_const_unsafe_fn, "1.33.0", Some(55607), None),
+    (accepted, min_const_unsafe_fn, "1.33.0", Some(55607)),
     /// Allows using `Self` and associated types in struct expressions and patterns.
-    (accepted, more_struct_aliases, "1.16.0", Some(37544), None),
+    (accepted, more_struct_aliases, "1.16.0", Some(37544)),
     /// Allows using the MOVBE target feature.
-    (accepted, movbe_target_feature, "1.70.0", Some(44839), None),
+    (accepted, movbe_target_feature, "1.70.0", Some(44839)),
     /// Allows patterns with concurrent by-move and by-ref bindings.
     /// For example, you can write `Foo(a, ref b)` where `a` is by-move and `b` is by-ref.
-    (accepted, move_ref_pattern, "1.49.0", Some(68354), None),
+    (accepted, move_ref_pattern, "1.49.0", Some(68354)),
     /// Allows specifying modifiers in the link attribute: `#[link(modifiers = "...")]`
-    (accepted, native_link_modifiers, "1.61.0", Some(81490), None),
+    (accepted, native_link_modifiers, "1.61.0", Some(81490)),
     /// Allows specifying the bundle link modifier
-    (accepted, native_link_modifiers_bundle, "1.63.0", Some(81490), None),
+    (accepted, native_link_modifiers_bundle, "1.63.0", Some(81490)),
     /// Allows specifying the verbatim link modifier
-    (accepted, native_link_modifiers_verbatim, "1.67.0", Some(81490), None),
+    (accepted, native_link_modifiers_verbatim, "1.67.0", Some(81490)),
     /// Allows specifying the whole-archive link modifier
-    (accepted, native_link_modifiers_whole_archive, "1.61.0", Some(81490), None),
+    (accepted, native_link_modifiers_whole_archive, "1.61.0", Some(81490)),
     /// Allows using non lexical lifetimes (RFC 2094).
-    (accepted, nll, "1.63.0", Some(43234), None),
+    (accepted, nll, "1.63.0", Some(43234)),
     /// Allows using `#![no_std]`.
-    (accepted, no_std, "1.6.0", None, None),
+    (accepted, no_std, "1.6.0", None),
     /// Allows defining identifiers beyond ASCII.
-    (accepted, non_ascii_idents, "1.53.0", Some(55467), None),
+    (accepted, non_ascii_idents, "1.53.0", Some(55467)),
     /// Allows future-proofing enums/structs with the `#[non_exhaustive]` attribute (RFC 2008).
-    (accepted, non_exhaustive, "1.40.0", Some(44109), None),
+    (accepted, non_exhaustive, "1.40.0", Some(44109)),
     /// Allows `foo.rs` as an alternative to `foo/mod.rs`.
-    (accepted, non_modrs_mods, "1.30.0", Some(44660), None),
+    (accepted, non_modrs_mods, "1.30.0", Some(44660)),
     /// Allows the use of or-patterns (e.g., `0 | 1`).
-    (accepted, or_patterns, "1.53.0", Some(54883), None),
+    (accepted, or_patterns, "1.53.0", Some(54883)),
     /// Allows using `+bundle,+whole-archive` link modifiers with native libs.
-    (accepted, packed_bundled_libs, "1.74.0", Some(108081), None),
+    (accepted, packed_bundled_libs, "1.74.0", Some(108081)),
     /// Allows annotating functions conforming to `fn(&PanicInfo) -> !` with `#[panic_handler]`.
     /// This defines the behavior of panics.
-    (accepted, panic_handler, "1.30.0", Some(44489), None),
+    (accepted, panic_handler, "1.30.0", Some(44489)),
     /// Allows attributes in formal function parameters.
-    (accepted, param_attrs, "1.39.0", Some(60406), None),
+    (accepted, param_attrs, "1.39.0", Some(60406)),
     /// Allows parentheses in patterns.
-    (accepted, pattern_parentheses, "1.31.0", Some(51087), None),
+    (accepted, pattern_parentheses, "1.31.0", Some(51087)),
     /// Allows procedural macros in `proc-macro` crates.
-    (accepted, proc_macro, "1.29.0", Some(38356), None),
+    (accepted, proc_macro, "1.29.0", Some(38356)),
     /// Allows multi-segment paths in attributes and derives.
-    (accepted, proc_macro_path_invoc, "1.30.0", Some(38356), None),
+    (accepted, proc_macro_path_invoc, "1.30.0", Some(38356)),
     /// Allows `pub(restricted)` visibilities (RFC 1422).
-    (accepted, pub_restricted, "1.18.0", Some(32409), None),
+    (accepted, pub_restricted, "1.18.0", Some(32409)),
     /// Allows use of the postfix `?` operator in expressions.
-    (accepted, question_mark, "1.13.0", Some(31436), None),
+    (accepted, question_mark, "1.13.0", Some(31436)),
     /// Allows the use of raw-dylibs (RFC 2627).
-    (accepted, raw_dylib, "1.71.0", Some(58713), None),
+    (accepted, raw_dylib, "1.71.0", Some(58713)),
     /// Allows keywords to be escaped for use as identifiers.
-    (accepted, raw_identifiers, "1.30.0", Some(48589), None),
+    (accepted, raw_identifiers, "1.30.0", Some(48589)),
     /// Allows relaxing the coherence rules such that
     /// `impl<T> ForeignTrait<LocalType> for ForeignType<T>` is permitted.
-    (accepted, re_rebalance_coherence, "1.41.0", Some(55437), None),
+    (accepted, re_rebalance_coherence, "1.41.0", Some(55437)),
     /// Allows numeric fields in struct expressions and patterns.
-    (accepted, relaxed_adts, "1.19.0", Some(35626), None),
+    (accepted, relaxed_adts, "1.19.0", Some(35626)),
     /// Lessens the requirements for structs to implement `Unsize`.
-    (accepted, relaxed_struct_unsize, "1.58.0", Some(81793), None),
+    (accepted, relaxed_struct_unsize, "1.58.0", Some(81793)),
     /// Allows `repr(align(16))` struct attribute (RFC 1358).
-    (accepted, repr_align, "1.25.0", Some(33626), None),
+    (accepted, repr_align, "1.25.0", Some(33626)),
     /// Allows using `#[repr(align(X))]` on enums with equivalent semantics
     /// to wrapping an enum in a wrapper struct with `#[repr(align(X))]`.
-    (accepted, repr_align_enum, "1.37.0", Some(57996), None),
+    (accepted, repr_align_enum, "1.37.0", Some(57996)),
     /// Allows `#[repr(packed(N))]` attribute on structs.
-    (accepted, repr_packed, "1.33.0", Some(33158), None),
+    (accepted, repr_packed, "1.33.0", Some(33158)),
     /// Allows `#[repr(transparent)]` attribute on newtype structs.
-    (accepted, repr_transparent, "1.28.0", Some(43036), None),
+    (accepted, repr_transparent, "1.28.0", Some(43036)),
     /// Allows return-position `impl Trait` in traits.
-    (accepted, return_position_impl_trait_in_trait, "1.75.0", Some(91611), None),
+    (accepted, return_position_impl_trait_in_trait, "1.75.0", Some(91611)),
     /// Allows code like `let x: &'static u32 = &42` to work (RFC 1414).
-    (accepted, rvalue_static_promotion, "1.21.0", Some(38865), None),
+    (accepted, rvalue_static_promotion, "1.21.0", Some(38865)),
     /// Allows `Self` in type definitions (RFC 2300).
-    (accepted, self_in_typedefs, "1.32.0", Some(49303), None),
+    (accepted, self_in_typedefs, "1.32.0", Some(49303)),
     /// Allows `Self` struct constructor (RFC 2302).
-    (accepted, self_struct_ctor, "1.32.0", Some(51994), None),
+    (accepted, self_struct_ctor, "1.32.0", Some(51994)),
     /// Allows using subslice patterns, `[a, .., b]` and `[a, xs @ .., b]`.
-    (accepted, slice_patterns, "1.42.0", Some(62254), None),
+    (accepted, slice_patterns, "1.42.0", Some(62254)),
     /// Allows use of `&foo[a..b]` as a slicing syntax.
-    (accepted, slicing_syntax, "1.0.0", None, None),
+    (accepted, slicing_syntax, "1.0.0", None),
     /// Allows elision of `'static` lifetimes in `static`s and `const`s.
-    (accepted, static_in_const, "1.17.0", Some(35897), None),
+    (accepted, static_in_const, "1.17.0", Some(35897)),
     /// Allows the definition recursive static items.
-    (accepted, static_recursion, "1.17.0", Some(29719), None),
+    (accepted, static_recursion, "1.17.0", Some(29719)),
     /// Allows attributes on struct literal fields.
-    (accepted, struct_field_attributes, "1.20.0", Some(38814), None),
+    (accepted, struct_field_attributes, "1.20.0", Some(38814)),
     /// Allows struct variants `Foo { baz: u8, .. }` in enums (RFC 418).
-    (accepted, struct_variant, "1.0.0", None, None),
+    (accepted, struct_variant, "1.0.0", None),
     /// Allows `#[target_feature(...)]`.
-    (accepted, target_feature, "1.27.0", None, None),
+    (accepted, target_feature, "1.27.0", None),
     /// Allows `fn main()` with return types which implements `Termination` (RFC 1937).
-    (accepted, termination_trait, "1.26.0", Some(43301), None),
+    (accepted, termination_trait, "1.26.0", Some(43301)),
     /// Allows `#[test]` functions where the return type implements `Termination` (RFC 1937).
-    (accepted, termination_trait_test, "1.27.0", Some(48854), None),
+    (accepted, termination_trait_test, "1.27.0", Some(48854)),
     /// Allows attributes scoped to tools.
-    (accepted, tool_attributes, "1.30.0", Some(44690), None),
+    (accepted, tool_attributes, "1.30.0", Some(44690)),
     /// Allows scoped lints.
-    (accepted, tool_lints, "1.31.0", Some(44690), None),
+    (accepted, tool_lints, "1.31.0", Some(44690)),
     /// Allows `#[track_caller]` to be used which provides
     /// accurate caller location reporting during panic (RFC 2091).
-    (accepted, track_caller, "1.46.0", Some(47809), None),
+    (accepted, track_caller, "1.46.0", Some(47809)),
     /// Allows dyn upcasting trait objects via supertraits.
     /// Dyn upcasting is casting, e.g., `dyn Foo -> dyn Bar` where `Foo: Bar`.
-    (accepted, trait_upcasting, "CURRENT_RUSTC_VERSION", Some(65991), None),
+    (accepted, trait_upcasting, "CURRENT_RUSTC_VERSION", Some(65991)),
     /// Allows #[repr(transparent)] on univariant enums (RFC 2645).
-    (accepted, transparent_enums, "1.42.0", Some(60405), None),
+    (accepted, transparent_enums, "1.42.0", Some(60405)),
     /// Allows indexing tuples.
-    (accepted, tuple_indexing, "1.0.0", None, None),
+    (accepted, tuple_indexing, "1.0.0", None),
     /// Allows paths to enum variants on type aliases including `Self`.
-    (accepted, type_alias_enum_variants, "1.37.0", Some(49683), None),
+    (accepted, type_alias_enum_variants, "1.37.0", Some(49683)),
     /// Allows macros to appear in the type position.
-    (accepted, type_macros, "1.13.0", Some(27245), None),
+    (accepted, type_macros, "1.13.0", Some(27245)),
     /// Allows `const _: TYPE = VALUE`.
-    (accepted, underscore_const_names, "1.37.0", Some(54912), None),
+    (accepted, underscore_const_names, "1.37.0", Some(54912)),
     /// Allows `use path as _;` and `extern crate c as _;`.
-    (accepted, underscore_imports, "1.33.0", Some(48216), None),
+    (accepted, underscore_imports, "1.33.0", Some(48216)),
     /// Allows `'_` placeholder lifetimes.
-    (accepted, underscore_lifetimes, "1.26.0", Some(44524), None),
+    (accepted, underscore_lifetimes, "1.26.0", Some(44524)),
     /// Allows `use x::y;` to search `x` in the current scope.
-    (accepted, uniform_paths, "1.32.0", Some(53130), None),
+    (accepted, uniform_paths, "1.32.0", Some(53130)),
     /// Allows `impl Trait` in function arguments.
-    (accepted, universal_impl_trait, "1.26.0", Some(34511), None),
+    (accepted, universal_impl_trait, "1.26.0", Some(34511)),
     /// Allows arbitrary delimited token streams in non-macro attributes.
-    (accepted, unrestricted_attribute_tokens, "1.34.0", Some(55208), None),
+    (accepted, unrestricted_attribute_tokens, "1.34.0", Some(55208)),
     /// The `unsafe_op_in_unsafe_fn` lint (allowed by default): no longer treat an unsafe function as an unsafe block.
-    (accepted, unsafe_block_in_unsafe_fn, "1.52.0", Some(71668), None),
+    (accepted, unsafe_block_in_unsafe_fn, "1.52.0", Some(71668)),
     /// Allows importing and reexporting macros with `use`,
     /// enables macro modularization in general.
-    (accepted, use_extern_macros, "1.30.0", Some(35896), None),
+    (accepted, use_extern_macros, "1.30.0", Some(35896)),
     /// Allows nested groups in `use` items (RFC 2128).
-    (accepted, use_nested_groups, "1.25.0", Some(44494), None),
+    (accepted, use_nested_groups, "1.25.0", Some(44494)),
     /// Allows `#[used]` to preserve symbols (see llvm.compiler.used).
-    (accepted, used, "1.30.0", Some(40289), None),
+    (accepted, used, "1.30.0", Some(40289)),
     /// Allows the use of `while let` expressions.
-    (accepted, while_let, "1.0.0", None, None),
+    (accepted, while_let, "1.0.0", None),
     /// Allows `#![windows_subsystem]`.
-    (accepted, windows_subsystem, "1.18.0", Some(37499), None),
+    (accepted, windows_subsystem, "1.18.0", Some(37499)),
     // !!!!    !!!!    !!!!    !!!!   !!!!    !!!!    !!!!    !!!!    !!!!    !!!!    !!!!
     // Features are listed in alphabetical order. Tidy will fail if you don't keep it this way.
     // !!!!    !!!!    !!!!    !!!!   !!!!    !!!!    !!!!    !!!!    !!!!    !!!!    !!!!
diff --git a/compiler/rustc_feature/src/lib.rs b/compiler/rustc_feature/src/lib.rs
index 73d51d9f80e..cd1d9b13daa 100644
--- a/compiler/rustc_feature/src/lib.rs
+++ b/compiler/rustc_feature/src/lib.rs
@@ -26,7 +26,7 @@ mod unstable;
 #[cfg(test)]
 mod tests;
 
-use rustc_span::{edition::Edition, symbol::Symbol};
+use rustc_span::symbol::Symbol;
 use std::num::NonZeroU32;
 
 #[derive(Debug, Clone)]
@@ -34,7 +34,6 @@ pub struct Feature {
     pub name: Symbol,
     pub since: &'static str,
     issue: Option<NonZeroU32>,
-    pub edition: Option<Edition>,
 }
 
 #[derive(Copy, Clone, Debug)]
diff --git a/compiler/rustc_feature/src/removed.rs b/compiler/rustc_feature/src/removed.rs
index c0d3fc3fae0..0d9b8b344cf 100644
--- a/compiler/rustc_feature/src/removed.rs
+++ b/compiler/rustc_feature/src/removed.rs
@@ -10,7 +10,7 @@ pub struct RemovedFeature {
 
 macro_rules! declare_features {
     ($(
-        $(#[doc = $doc:tt])* (removed, $feature:ident, $ver:expr, $issue:expr, None, $reason:expr),
+        $(#[doc = $doc:tt])* (removed, $feature:ident, $ver:expr, $issue:expr, $reason:expr),
     )+) => {
         /// Formerly unstable features that have now been removed.
         pub const REMOVED_FEATURES: &[RemovedFeature] = &[
@@ -19,7 +19,6 @@ macro_rules! declare_features {
                     name: sym::$feature,
                     since: $ver,
                     issue: to_nonzero($issue),
-                    edition: None,
                 },
                 reason: $reason
             }),+
@@ -33,176 +32,178 @@ declare_features! (
     // feature-group-start: removed features
     // -------------------------------------------------------------------------
 
-    (removed, advanced_slice_patterns, "1.0.0", Some(62254), None,
+    (removed, advanced_slice_patterns, "1.0.0", Some(62254),
      Some("merged into `#![feature(slice_patterns)]`")),
-    (removed, allocator, "1.0.0", None, None, None),
+    (removed, allocator, "1.0.0", None, None),
     /// Allows a test to fail without failing the whole suite.
-    (removed, allow_fail, "1.19.0", Some(46488), None, Some("removed due to no clear use cases")),
-    (removed, await_macro, "1.38.0", Some(50547), None,
+    (removed, allow_fail, "1.19.0", Some(46488), Some("removed due to no clear use cases")),
+    (removed, await_macro, "1.38.0", Some(50547),
      Some("subsumed by `.await` syntax")),
     /// Allows using the `box $expr` syntax.
-    (removed, box_syntax, "1.70.0", Some(49733), None, Some("replaced with `#[rustc_box]`")),
+    (removed, box_syntax, "1.70.0", Some(49733), Some("replaced with `#[rustc_box]`")),
     /// Allows capturing disjoint fields in a closure/coroutine (RFC 2229).
-    (removed, capture_disjoint_fields, "1.49.0", Some(53488), None, Some("stabilized in Rust 2021")),
+    (removed, capture_disjoint_fields, "1.49.0", Some(53488), Some("stabilized in Rust 2021")),
     /// Allows comparing raw pointers during const eval.
-    (removed, const_compare_raw_pointers, "1.46.0", Some(53020), None,
+    (removed, const_compare_raw_pointers, "1.46.0", Some(53020),
      Some("cannot be allowed in const eval in any meaningful way")),
     /// Allows limiting the evaluation steps of const expressions
-    (removed, const_eval_limit, "1.43.0", Some(67217), None, Some("removed the limit entirely")),
+    (removed, const_eval_limit, "1.43.0", Some(67217), Some("removed the limit entirely")),
     /// Allows non-trivial generic constants which have to be manually propagated upwards.
-    (removed, const_evaluatable_checked, "1.48.0", Some(76560), None, Some("renamed to `generic_const_exprs`")),
+    (removed, const_evaluatable_checked, "1.48.0", Some(76560), Some("renamed to `generic_const_exprs`")),
     /// Allows the definition of `const` functions with some advanced features.
-    (removed, const_fn, "1.54.0", Some(57563), None,
+    (removed, const_fn, "1.54.0", Some(57563),
      Some("split into finer-grained feature gates")),
     /// Allows const generic types (e.g. `struct Foo<const N: usize>(...);`).
-    (removed, const_generics, "1.34.0", Some(44580), None,
+    (removed, const_generics, "1.34.0", Some(44580),
      Some("removed in favor of `#![feature(adt_const_params)]` and `#![feature(generic_const_exprs)]`")),
     /// Allows `[x; N]` where `x` is a constant (RFC 2203).
-    (removed, const_in_array_repeat_expressions,  "1.37.0", Some(49147), None,
+    (removed, const_in_array_repeat_expressions,  "1.37.0", Some(49147),
      Some("removed due to causing promotable bugs")),
     /// Allows casting raw pointers to `usize` during const eval.
-    (removed, const_raw_ptr_to_usize_cast, "1.55.0", Some(51910), None,
+    (removed, const_raw_ptr_to_usize_cast, "1.55.0", Some(51910),
      Some("at compile-time, pointers do not have an integer value, so these casts cannot be properly supported")),
     /// Allows `T: ?const Trait` syntax in bounds.
-    (removed, const_trait_bound_opt_out, "1.42.0", Some(67794), None,
+    (removed, const_trait_bound_opt_out, "1.42.0", Some(67794),
      Some("Removed in favor of `~const` bound in #![feature(const_trait_impl)]")),
     /// Allows using `crate` as visibility modifier, synonymous with `pub(crate)`.
-    (removed, crate_visibility_modifier, "1.63.0", Some(53120), None, Some("removed in favor of `pub(crate)`")),
+    (removed, crate_visibility_modifier, "1.63.0", Some(53120), Some("removed in favor of `pub(crate)`")),
     /// Allows using custom attributes (RFC 572).
-    (removed, custom_attribute, "1.0.0", Some(29642), None,
+    (removed, custom_attribute, "1.0.0", Some(29642),
      Some("removed in favor of `#![register_tool]` and `#![register_attr]`")),
     /// Allows the use of `#[derive(Anything)]` as sugar for `#[derive_Anything]`.
-    (removed, custom_derive, "1.32.0", Some(29644), None,
+    (removed, custom_derive, "1.32.0", Some(29644),
      Some("subsumed by `#[proc_macro_derive]`")),
     /// Allows using `#[doc(keyword = "...")]`.
-    (removed, doc_keyword, "1.28.0", Some(51315), None,
+    (removed, doc_keyword, "1.28.0", Some(51315),
      Some("merged into `#![feature(rustdoc_internals)]`")),
     /// Allows using `doc(primitive)` without a future-incompat warning.
-    (removed, doc_primitive, "1.56.0", Some(88070), None,
+    (removed, doc_primitive, "1.56.0", Some(88070),
      Some("merged into `#![feature(rustdoc_internals)]`")),
     /// Allows `#[doc(spotlight)]`.
     /// The attribute was renamed to `#[doc(notable_trait)]`
     /// and the feature to `doc_notable_trait`.
-    (removed, doc_spotlight, "1.22.0", Some(45040), None,
+    (removed, doc_spotlight, "1.22.0", Some(45040),
      Some("renamed to `doc_notable_trait`")),
     /// Allows using `#[unsafe_destructor_blind_to_params]` (RFC 1238).
-    (removed, dropck_parametricity, "1.38.0", Some(28498), None, None),
+    (removed, dropck_parametricity, "1.38.0", Some(28498), None),
     /// Allows defining `existential type`s.
-    (removed, existential_type, "1.38.0", Some(63063), None,
+    (removed, existential_type, "1.38.0", Some(63063),
      Some("removed in favor of `#![feature(type_alias_impl_trait)]`")),
     /// Paths of the form: `extern::foo::bar`
-    (removed, extern_in_paths, "1.33.0", Some(55600), None,
+    (removed, extern_in_paths, "1.33.0", Some(55600),
      Some("subsumed by `::foo::bar` paths")),
     /// Allows `#[doc(include = "some-file")]`.
-    (removed, external_doc, "1.54.0", Some(44732), None,
+    (removed, external_doc, "1.54.0", Some(44732),
      Some("use #[doc = include_str!(\"filename\")] instead, which handles macro invocations")),
     /// Allows generators to be cloned.
-    (removed, generator_clone, "1.65.0", Some(95360), None, Some("renamed to `coroutine_clone`")),
+    (removed, generator_clone, "1.65.0", Some(95360), Some("renamed to `coroutine_clone`")),
     /// Allows defining generators.
-    (removed, generators, "1.21.0", Some(43122), None, Some("renamed to `coroutines`")),
+    (removed, generators, "1.21.0", Some(43122), Some("renamed to `coroutines`")),
     /// Allows `impl Trait` in bindings (`let`, `const`, `static`).
-    (removed, impl_trait_in_bindings, "1.55.0", Some(63065), None,
+    (removed, impl_trait_in_bindings, "1.55.0", Some(63065),
      Some("the implementation was not maintainable, the feature may get reintroduced once the current refactorings are done")),
-    (removed, import_shadowing, "1.0.0", None, None, None),
+    (removed, import_shadowing, "1.0.0", None, None),
     /// Allows in-band quantification of lifetime bindings (e.g., `fn foo(x: &'a u8) -> &'a u8`).
-    (removed, in_band_lifetimes, "1.23.0", Some(44524), None,
+    (removed, in_band_lifetimes, "1.23.0", Some(44524),
      Some("removed due to unsolved ergonomic questions and added lifetime resolution complexity")),
     /// Allows inferring `'static` outlives requirements (RFC 2093).
-    (removed, infer_static_outlives_requirements, "1.63.0", Some(54185), None,
+    (removed, infer_static_outlives_requirements, "1.63.0", Some(54185),
      Some("removed as it caused some confusion and discussion was inactive for years")),
     /// Lazily evaluate constants. This allows constants to depend on type parameters.
-    (removed, lazy_normalization_consts, "1.46.0", Some(72219), None, Some("superseded by `generic_const_exprs`")),
+    (removed, lazy_normalization_consts, "1.46.0", Some(72219), Some("superseded by `generic_const_exprs`")),
     /// Allows using the `#[link_args]` attribute.
-    (removed, link_args, "1.53.0", Some(29596), None,
+    (removed, link_args, "1.53.0", Some(29596),
      Some("removed in favor of using `-C link-arg=ARG` on command line, \
            which is available from cargo build scripts with `cargo:rustc-link-arg` now")),
-    (removed, macro_reexport, "1.0.0", Some(29638), None,
+    (removed, macro_reexport, "1.0.0", Some(29638),
      Some("subsumed by `pub use`")),
     /// Allows using `#[main]` to replace the entrypoint `#[lang = "start"]` calls.
-    (removed, main, "1.53.0", Some(29634), None, None),
-    (removed, managed_boxes, "1.0.0", None, None, None),
+    (removed, main, "1.53.0", Some(29634), None),
+    (removed, managed_boxes, "1.0.0", None, None),
     /// Allows the use of type alias impl trait in function return positions
-    (removed, min_type_alias_impl_trait, "1.56.0", Some(63063), None,
+    (removed, min_type_alias_impl_trait, "1.56.0", Some(63063),
      Some("removed in favor of full type_alias_impl_trait")),
-    (removed, needs_allocator, "1.4.0", Some(27389), None,
+    (removed, needs_allocator, "1.4.0", Some(27389),
      Some("subsumed by `#![feature(allocator_internals)]`")),
     /// Allows use of unary negate on unsigned integers, e.g., -e for e: u8
-    (removed, negate_unsigned, "1.0.0", Some(29645), None, None),
+    (removed, negate_unsigned, "1.0.0", Some(29645), None),
     /// Allows `#[no_coverage]` on functions.
     /// The feature was renamed to `coverage_attribute` and the attribute to `#[coverage(on|off)]`
-    (removed, no_coverage, "1.74.0", Some(84605), None, Some("renamed to `coverage_attribute`")),
+    (removed, no_coverage, "1.74.0", Some(84605), Some("renamed to `coverage_attribute`")),
     /// Allows `#[no_debug]`.
-    (removed, no_debug, "1.43.0", Some(29721), None, Some("removed due to lack of demand")),
+    (removed, no_debug, "1.43.0", Some(29721), Some("removed due to lack of demand")),
     /// Note: this feature was previously recorded in a separate
     /// `STABLE_REMOVED` list because it, uniquely, was once stable but was
     /// then removed. But there was no utility storing it separately, so now
     /// it's in this list.
-    (removed, no_stack_check, "1.0.0", None, None, None),
+    (removed, no_stack_check, "1.0.0", None, None),
     /// Allows using `#[on_unimplemented(..)]` on traits.
     /// (Moved to `rustc_attrs`.)
-    (removed, on_unimplemented, "1.40.0", None, None, None),
+    (removed, on_unimplemented, "1.40.0", None, None),
     /// A way to temporarily opt out of opt-in copy. This will *never* be accepted.
-    (removed, opt_out_copy, "1.0.0", None, None, None),
+    (removed, opt_out_copy, "1.0.0", None, None),
     /// Allows features specific to OIBIT (now called auto traits).
     /// Renamed to `auto_traits`.
-    (removed, optin_builtin_traits, "1.0.0", Some(13231), None,
+    (removed, optin_builtin_traits, "1.0.0", Some(13231),
      Some("renamed to `auto_traits`")),
     /// Allows overlapping impls of marker traits.
-    (removed, overlapping_marker_traits, "1.42.0", Some(29864), None,
+    (removed, overlapping_marker_traits, "1.42.0", Some(29864),
      Some("removed in favor of `#![feature(marker_trait_attr)]`")),
-    (removed, panic_implementation, "1.28.0", Some(44489), None,
+    (removed, panic_implementation, "1.28.0", Some(44489),
      Some("subsumed by `#[panic_handler]`")),
     /// Allows using `#![plugin(myplugin)]`.
-    (removed, plugin, "1.75.0", Some(29597), None,
+    (removed, plugin, "1.75.0", Some(29597),
      Some("plugins are no longer supported")),
     /// Allows using `#[plugin_registrar]` on functions.
-    (removed, plugin_registrar, "1.54.0", Some(29597), None,
+    (removed, plugin_registrar, "1.54.0", Some(29597),
      Some("plugins are no longer supported")),
     /// Allows exhaustive integer pattern matching with `usize::MAX`/`isize::MIN`/`isize::MAX`.
-    (removed, precise_pointer_size_matching, "1.32.0", Some(56354), None,
+    (removed, precise_pointer_size_matching, "1.32.0", Some(56354),
      Some("removed in favor of half-open ranges")),
-    (removed, proc_macro_expr, "1.27.0", Some(54727), None,
+    (removed, proc_macro_expr, "1.27.0", Some(54727),
      Some("subsumed by `#![feature(proc_macro_hygiene)]`")),
-    (removed, proc_macro_gen, "1.27.0", Some(54727), None,
+    (removed, proc_macro_gen, "1.27.0", Some(54727),
      Some("subsumed by `#![feature(proc_macro_hygiene)]`")),
-    (removed, proc_macro_mod, "1.27.0", Some(54727), None,
+    (removed, proc_macro_mod, "1.27.0", Some(54727),
      Some("subsumed by `#![feature(proc_macro_hygiene)]`")),
-    (removed, proc_macro_non_items, "1.27.0", Some(54727), None,
+    (removed, proc_macro_non_items, "1.27.0", Some(54727),
      Some("subsumed by `#![feature(proc_macro_hygiene)]`")),
-    (removed, pub_macro_rules, "1.53.0", Some(78855), None,
+    (removed, pub_macro_rules, "1.53.0", Some(78855),
      Some("removed due to being incomplete, in particular it does not work across crates")),
-    (removed, pushpop_unsafe, "1.2.0", None, None, None),
-    (removed, quad_precision_float, "1.0.0", None, None, None),
-    (removed, quote, "1.33.0", Some(29601), None, None),
-    (removed, reflect, "1.0.0", Some(27749), None, None),
+    (removed, pushpop_unsafe, "1.2.0", None, None),
+    (removed, quad_precision_float, "1.0.0", None, None),
+    (removed, quote, "1.33.0", Some(29601), None),
+    (removed, reflect, "1.0.0", Some(27749), None),
     /// Allows using the `#[register_attr]` attribute.
-    (removed, register_attr, "1.65.0", Some(66080), None,
+    (removed, register_attr, "1.65.0", Some(66080),
      Some("removed in favor of `#![register_tool]`")),
+    (removed, rust_2018_preview, "CURRENT_RUSTC_VERSION", None,
+     Some("2018 Edition preview is no longer relevant")),
     /// Allows using the macros:
     /// + `__diagnostic_used`
     /// + `__register_diagnostic`
     /// +`__build_diagnostic_array`
-    (removed, rustc_diagnostic_macros, "1.38.0", None, None, None),
+    (removed, rustc_diagnostic_macros, "1.38.0", None, None),
     /// Allows identifying crates that contain sanitizer runtimes.
-    (removed, sanitizer_runtime, "1.17.0", None, None, None),
-    (removed, simd, "1.0.0", Some(27731), None,
+    (removed, sanitizer_runtime, "1.17.0", None, None),
+    (removed, simd, "1.0.0", Some(27731),
      Some("removed in favor of `#[repr(simd)]`")),
     /// Allows `#[link(kind = "static-nobundle", ...)]`.
-    (removed, static_nobundle, "1.16.0", Some(37403), None,
+    (removed, static_nobundle, "1.16.0", Some(37403),
      Some(r#"subsumed by `#[link(kind = "static", modifiers = "-bundle", ...)]`"#)),
-    (removed, struct_inherit, "1.0.0", None, None, None),
-    (removed, test_removed_feature, "1.0.0", None, None, None),
+    (removed, struct_inherit, "1.0.0", None, None),
+    (removed, test_removed_feature, "1.0.0", None, None),
     /// Allows using items which are missing stability attributes
-    (removed, unmarked_api, "1.0.0", None, None, None),
-    (removed, unsafe_no_drop_flag, "1.0.0", None, None, None),
+    (removed, unmarked_api, "1.0.0", None, None),
+    (removed, unsafe_no_drop_flag, "1.0.0", None, None),
     /// Allows `union` fields that don't implement `Copy` as long as they don't have any drop glue.
-    (removed, untagged_unions, "1.13.0", Some(55149), None,
+    (removed, untagged_unions, "1.13.0", Some(55149),
      Some("unions with `Copy` and `ManuallyDrop` fields are stable; there is no intent to stabilize more")),
     /// Allows `#[unwind(..)]`.
     ///
     /// Permits specifying whether a function should permit unwinding or abort on unwind.
-    (removed, unwind_attributes, "1.56.0", Some(58760), None, Some("use the C-unwind ABI instead")),
-    (removed, visible_private_types, "1.0.0", None, None, None),
+    (removed, unwind_attributes, "1.56.0", Some(58760), Some("use the C-unwind ABI instead")),
+    (removed, visible_private_types, "1.0.0", None, None),
     // !!!!    !!!!    !!!!    !!!!   !!!!    !!!!    !!!!    !!!!    !!!!    !!!!    !!!!
     // Features are listed in alphabetical order. Tidy will fail if you don't keep it this way.
     // !!!!    !!!!    !!!!    !!!!   !!!!    !!!!    !!!!    !!!!    !!!!    !!!!    !!!!
diff --git a/compiler/rustc_feature/src/unstable.rs b/compiler/rustc_feature/src/unstable.rs
index 365a16e6838..bbf5e031175 100644
--- a/compiler/rustc_feature/src/unstable.rs
+++ b/compiler/rustc_feature/src/unstable.rs
@@ -3,7 +3,6 @@
 use super::{to_nonzero, Feature};
 
 use rustc_data_structures::fx::FxHashSet;
-use rustc_span::edition::Edition;
 use rustc_span::symbol::{sym, Symbol};
 use rustc_span::Span;
 
@@ -33,7 +32,7 @@ macro_rules! status_to_enum {
 
 macro_rules! declare_features {
     ($(
-        $(#[doc = $doc:tt])* ($status:ident, $feature:ident, $ver:expr, $issue:expr, $edition:expr),
+        $(#[doc = $doc:tt])* ($status:ident, $feature:ident, $ver:expr, $issue:expr),
     )+) => {
         /// Unstable language features that are being implemented or being
         /// considered for acceptance (stabilization) or removal.
@@ -43,7 +42,6 @@ macro_rules! declare_features {
                     name: sym::$feature,
                     since: $ver,
                     issue: to_nonzero($issue),
-                    edition: $edition,
                 },
                 // Sets this feature's corresponding bool within `features`.
                 set_enabled: |features| features.$feature = true,
@@ -102,8 +100,7 @@ macro_rules! declare_features {
                 self.declared_features.contains(&feature)
             }
 
-            /// Is the given feature active, i.e. declared or automatically
-            /// enabled due to the edition?
+            /// Is the given feature active (enabled by the user)?
             ///
             /// Panics if the symbol doesn't correspond to a declared feature.
             pub fn active(&self, feature: Symbol) -> bool {
@@ -179,58 +176,56 @@ declare_features! (
     // no-tracking-issue-start
 
     /// Allows using the `unadjusted` ABI; perma-unstable.
-    (internal, abi_unadjusted, "1.16.0", None, None),
+    (internal, abi_unadjusted, "1.16.0", None),
     /// Allows using the `vectorcall` ABI.
-    (unstable, abi_vectorcall, "1.7.0", None, None),
+    (unstable, abi_vectorcall, "1.7.0", None),
     /// Allows using `#![needs_allocator]`, an implementation detail of `#[global_allocator]`.
-    (internal, allocator_internals, "1.20.0", None, None),
+    (internal, allocator_internals, "1.20.0", None),
     /// Allows using `#[allow_internal_unsafe]`. This is an
     /// attribute on `macro_rules!` and can't use the attribute handling
     /// below (it has to be checked before expansion possibly makes
     /// macros disappear).
-    (internal, allow_internal_unsafe, "1.0.0", None, None),
+    (internal, allow_internal_unsafe, "1.0.0", None),
     /// Allows using `#[allow_internal_unstable]`. This is an
     /// attribute on `macro_rules!` and can't use the attribute handling
     /// below (it has to be checked before expansion possibly makes
     /// macros disappear).
-    (internal, allow_internal_unstable, "1.0.0", None, None),
+    (internal, allow_internal_unstable, "1.0.0", None),
     /// Allows using anonymous lifetimes in argument-position impl-trait.
-    (unstable, anonymous_lifetime_in_impl_trait, "1.63.0", None, None),
+    (unstable, anonymous_lifetime_in_impl_trait, "1.63.0", None),
     /// Allows identifying the `compiler_builtins` crate.
-    (internal, compiler_builtins, "1.13.0", None, None),
+    (internal, compiler_builtins, "1.13.0", None),
     /// Allows writing custom MIR
-    (internal, custom_mir, "1.65.0", None, None),
+    (internal, custom_mir, "1.65.0", None),
     /// Outputs useful `assert!` messages
-    (unstable, generic_assert, "1.63.0", None, None),
+    (unstable, generic_assert, "1.63.0", None),
     /// Allows using the `rust-intrinsic`'s "ABI".
-    (internal, intrinsics, "1.0.0", None, None),
+    (internal, intrinsics, "1.0.0", None),
     /// Allows using `#[lang = ".."]` attribute for linking items to special compiler logic.
-    (internal, lang_items, "1.0.0", None, None),
+    (internal, lang_items, "1.0.0", None),
     /// Changes `impl Trait` to capture all lifetimes in scope.
-    (unstable, lifetime_capture_rules_2024, "CURRENT_RUSTC_VERSION", None, None),
+    (unstable, lifetime_capture_rules_2024, "CURRENT_RUSTC_VERSION", None),
     /// Allows `#[link(..., cfg(..))]`; perma-unstable per #37406
-    (unstable, link_cfg, "1.14.0", None, None),
+    (unstable, link_cfg, "1.14.0", None),
     /// Allows the `multiple_supertrait_upcastable` lint.
-    (unstable, multiple_supertrait_upcastable, "1.69.0", None, None),
+    (unstable, multiple_supertrait_upcastable, "1.69.0", None),
     /// Allow negative trait bounds. This is an internal-only feature for testing the trait solver!
-    (incomplete, negative_bounds, "1.71.0", None, None),
+    (incomplete, negative_bounds, "1.71.0", None),
     /// Allows using `#[omit_gdb_pretty_printer_section]`.
-    (internal, omit_gdb_pretty_printer_section, "1.5.0", None, None),
+    (internal, omit_gdb_pretty_printer_section, "1.5.0", None),
     /// Allows using `#[prelude_import]` on glob `use` items.
-    (internal, prelude_import, "1.2.0", None, None),
+    (internal, prelude_import, "1.2.0", None),
     /// Used to identify crates that contain the profiler runtime.
-    (internal, profiler_runtime, "1.18.0", None, None),
+    (internal, profiler_runtime, "1.18.0", None),
     /// Allows using `rustc_*` attributes (RFC 572).
-    (internal, rustc_attrs, "1.0.0", None, None),
+    (internal, rustc_attrs, "1.0.0", None),
     /// Allows using the `#[stable]` and `#[unstable]` attributes.
-    (internal, staged_api, "1.0.0", None, None),
-    /// Added for testing E0705; perma-unstable.
-    (internal, test_2018_feature, "1.31.0", None, Some(Edition::Edition2018)),
+    (internal, staged_api, "1.0.0", None),
     /// Added for testing unstable lints; perma-unstable.
-    (internal, test_unstable_lint, "1.60.0", None, None),
+    (internal, test_unstable_lint, "1.60.0", None),
     /// Use for stable + negative coherence and strict coherence depending on trait's
     /// rustc_strict_coherence value.
-    (unstable, with_negative_coherence, "1.60.0", None, None),
+    (unstable, with_negative_coherence, "1.60.0", None),
     // !!!!    !!!!    !!!!    !!!!   !!!!    !!!!    !!!!    !!!!    !!!!    !!!!    !!!!
     // Features are listed in alphabetical order. Tidy will fail if you don't keep it this way.
     // !!!!    !!!!    !!!!    !!!!   !!!!    !!!!    !!!!    !!!!    !!!!    !!!!    !!!!
@@ -246,44 +241,44 @@ declare_features! (
 
     /// Allows features specific to auto traits.
     /// Renamed from `optin_builtin_traits`.
-    (unstable, auto_traits, "1.50.0", Some(13231), None),
+    (unstable, auto_traits, "1.50.0", Some(13231)),
     /// Allows using `box` in patterns (RFC 469).
-    (unstable, box_patterns, "1.0.0", Some(29641), None),
+    (unstable, box_patterns, "1.0.0", Some(29641)),
     /// Allows `#[doc(notable_trait)]`.
     /// Renamed from `doc_spotlight`.
-    (unstable, doc_notable_trait, "1.52.0", Some(45040), None),
+    (unstable, doc_notable_trait, "1.52.0", Some(45040)),
     /// Allows using the `may_dangle` attribute (RFC 1327).
-    (unstable, dropck_eyepatch, "1.10.0", Some(34761), None),
+    (unstable, dropck_eyepatch, "1.10.0", Some(34761)),
     /// Allows using the `#[fundamental]` attribute.
-    (unstable, fundamental, "1.0.0", Some(29635), None),
+    (unstable, fundamental, "1.0.0", Some(29635)),
     /// Allows using `#[link_name="llvm.*"]`.
-    (internal, link_llvm_intrinsics, "1.0.0", Some(29602), None),
+    (internal, link_llvm_intrinsics, "1.0.0", Some(29602)),
     /// Allows using the `#[linkage = ".."]` attribute.
-    (unstable, linkage, "1.0.0", Some(29603), None),
+    (unstable, linkage, "1.0.0", Some(29603)),
     /// Allows declaring with `#![needs_panic_runtime]` that a panic runtime is needed.
-    (internal, needs_panic_runtime, "1.10.0", Some(32837), None),
+    (internal, needs_panic_runtime, "1.10.0", Some(32837)),
     /// Allows using the `#![panic_runtime]` attribute.
-    (internal, panic_runtime, "1.10.0", Some(32837), None),
+    (internal, panic_runtime, "1.10.0", Some(32837)),
     /// Allows `extern "platform-intrinsic" { ... }`.
-    (internal, platform_intrinsics, "1.4.0", Some(27731), None),
+    (internal, platform_intrinsics, "1.4.0", Some(27731)),
     /// Allows using `#[rustc_allow_const_fn_unstable]`.
     /// This is an attribute on `const fn` for the same
     /// purpose as `#[allow_internal_unstable]`.
-    (internal, rustc_allow_const_fn_unstable, "1.49.0", Some(69399), None),
+    (internal, rustc_allow_const_fn_unstable, "1.49.0", Some(69399)),
     /// Allows using compiler's own crates.
-    (unstable, rustc_private, "1.0.0", Some(27812), None),
+    (unstable, rustc_private, "1.0.0", Some(27812)),
     /// Allows using internal rustdoc features like `doc(keyword)`.
-    (internal, rustdoc_internals, "1.58.0", Some(90418), None),
+    (internal, rustdoc_internals, "1.58.0", Some(90418)),
     /// Allows using the `rustdoc::missing_doc_code_examples` lint
-    (unstable, rustdoc_missing_doc_code_examples, "1.31.0", Some(101730), None),
+    (unstable, rustdoc_missing_doc_code_examples, "1.31.0", Some(101730)),
     /// Allows using `#[start]` on a function indicating that it is the program entrypoint.
-    (unstable, start, "1.0.0", Some(29633), None),
+    (unstable, start, "1.0.0", Some(29633)),
     /// Allows using `#[structural_match]` which indicates that a type is structurally matchable.
     /// FIXME: Subsumed by trait `StructuralPartialEq`, cannot move to removed until a library
     /// feature with the same name exists.
-    (unstable, structural_match, "1.8.0", Some(31434), None),
+    (unstable, structural_match, "1.8.0", Some(31434)),
     /// Allows using the `rust-call` ABI.
-    (unstable, unboxed_closures, "1.0.0", Some(29625), None),
+    (unstable, unboxed_closures, "1.0.0", Some(29625)),
     // !!!!    !!!!    !!!!    !!!!   !!!!    !!!!    !!!!    !!!!    !!!!    !!!!    !!!!
     // Features are listed in alphabetical order. Tidy will fail if you don't keep it this way.
     // !!!!    !!!!    !!!!    !!!!   !!!!    !!!!    !!!!    !!!!    !!!!    !!!!    !!!!
@@ -299,21 +294,21 @@ declare_features! (
     // FIXME: Document these and merge with the list below.
 
     // Unstable `#[target_feature]` directives.
-    (unstable, aarch64_ver_target_feature, "1.27.0", Some(44839), None),
-    (unstable, arm_target_feature, "1.27.0", Some(44839), None),
-    (unstable, avx512_target_feature, "1.27.0", Some(44839), None),
-    (unstable, bpf_target_feature, "1.54.0", Some(44839), None),
-    (unstable, csky_target_feature, "1.73.0", Some(44839), None),
-    (unstable, ermsb_target_feature, "1.49.0", Some(44839), None),
-    (unstable, hexagon_target_feature, "1.27.0", Some(44839), None),
-    (unstable, loongarch_target_feature, "1.73.0", Some(44839), None),
-    (unstable, mips_target_feature, "1.27.0", Some(44839), None),
-    (unstable, powerpc_target_feature, "1.27.0", Some(44839), None),
-    (unstable, riscv_target_feature, "1.45.0", Some(44839), None),
-    (unstable, rtm_target_feature, "1.35.0", Some(44839), None),
-    (unstable, sse4a_target_feature, "1.27.0", Some(44839), None),
-    (unstable, tbm_target_feature, "1.27.0", Some(44839), None),
-    (unstable, wasm_target_feature, "1.30.0", Some(44839), None),
+    (unstable, aarch64_ver_target_feature, "1.27.0", Some(44839)),
+    (unstable, arm_target_feature, "1.27.0", Some(44839)),
+    (unstable, avx512_target_feature, "1.27.0", Some(44839)),
+    (unstable, bpf_target_feature, "1.54.0", Some(44839)),
+    (unstable, csky_target_feature, "1.73.0", Some(44839)),
+    (unstable, ermsb_target_feature, "1.49.0", Some(44839)),
+    (unstable, hexagon_target_feature, "1.27.0", Some(44839)),
+    (unstable, loongarch_target_feature, "1.73.0", Some(44839)),
+    (unstable, mips_target_feature, "1.27.0", Some(44839)),
+    (unstable, powerpc_target_feature, "1.27.0", Some(44839)),
+    (unstable, riscv_target_feature, "1.45.0", Some(44839)),
+    (unstable, rtm_target_feature, "1.35.0", Some(44839)),
+    (unstable, sse4a_target_feature, "1.27.0", Some(44839)),
+    (unstable, tbm_target_feature, "1.27.0", Some(44839)),
+    (unstable, wasm_target_feature, "1.30.0", Some(44839)),
     // !!!!    !!!!    !!!!    !!!!   !!!!    !!!!    !!!!    !!!!    !!!!    !!!!    !!!!
     // Features are listed in alphabetical order. Tidy will fail if you don't keep it this way.
     // !!!!    !!!!    !!!!    !!!!   !!!!    !!!!    !!!!    !!!!    !!!!    !!!!    !!!!
@@ -327,295 +322,295 @@ declare_features! (
     // -------------------------------------------------------------------------
 
     /// Allows using the `amdgpu-kernel` ABI.
-    (unstable, abi_amdgpu_kernel, "1.29.0", Some(51575), None),
+    (unstable, abi_amdgpu_kernel, "1.29.0", Some(51575)),
     /// Allows `extern "avr-interrupt" fn()` and `extern "avr-non-blocking-interrupt" fn()`.
-    (unstable, abi_avr_interrupt, "1.45.0", Some(69664), None),
+    (unstable, abi_avr_interrupt, "1.45.0", Some(69664)),
     /// Allows `extern "C-cmse-nonsecure-call" fn()`.
-    (unstable, abi_c_cmse_nonsecure_call, "1.51.0", Some(81391), None),
+    (unstable, abi_c_cmse_nonsecure_call, "1.51.0", Some(81391)),
     /// Allows `extern "msp430-interrupt" fn()`.
-    (unstable, abi_msp430_interrupt, "1.16.0", Some(38487), None),
+    (unstable, abi_msp430_interrupt, "1.16.0", Some(38487)),
     /// Allows `extern "ptx-*" fn()`.
-    (unstable, abi_ptx, "1.15.0", Some(38788), None),
+    (unstable, abi_ptx, "1.15.0", Some(38788)),
     /// Allows `extern "riscv-interrupt-m" fn()` and `extern "riscv-interrupt-s" fn()`.
-    (unstable, abi_riscv_interrupt, "1.73.0", Some(111889), None),
+    (unstable, abi_riscv_interrupt, "1.73.0", Some(111889)),
     /// Allows `extern "x86-interrupt" fn()`.
-    (unstable, abi_x86_interrupt, "1.17.0", Some(40180), None),
+    (unstable, abi_x86_interrupt, "1.17.0", Some(40180)),
     /// Allows additional const parameter types, such as `&'static str` or user defined types
-    (incomplete, adt_const_params, "1.56.0", Some(95174), None),
+    (incomplete, adt_const_params, "1.56.0", Some(95174)),
     /// Allows defining an `#[alloc_error_handler]`.
-    (unstable, alloc_error_handler, "1.29.0", Some(51540), None),
+    (unstable, alloc_error_handler, "1.29.0", Some(51540)),
     /// Allows trait methods with arbitrary self types.
-    (unstable, arbitrary_self_types, "1.23.0", Some(44874), None),
+    (unstable, arbitrary_self_types, "1.23.0", Some(44874)),
     /// Allows using `const` operands in inline assembly.
-    (unstable, asm_const, "1.58.0", Some(93332), None),
+    (unstable, asm_const, "1.58.0", Some(93332)),
     /// Enables experimental inline assembly support for additional architectures.
-    (unstable, asm_experimental_arch, "1.58.0", Some(93335), None),
+    (unstable, asm_experimental_arch, "1.58.0", Some(93335)),
     /// Allows the `may_unwind` option in inline assembly.
-    (unstable, asm_unwind, "1.58.0", Some(93334), None),
+    (unstable, asm_unwind, "1.58.0", Some(93334)),
     /// Allows users to enforce equality of associated constants `TraitImpl<AssocConst=3>`.
-    (unstable, associated_const_equality, "1.58.0", Some(92827), None),
+    (unstable, associated_const_equality, "1.58.0", Some(92827)),
     /// Allows the user of associated type bounds.
-    (unstable, associated_type_bounds, "1.34.0", Some(52662), None),
+    (unstable, associated_type_bounds, "1.34.0", Some(52662)),
     /// Allows associated type defaults.
-    (unstable, associated_type_defaults, "1.2.0", Some(29661), None),
+    (unstable, associated_type_defaults, "1.2.0", Some(29661)),
     /// Allows `async || body` closures.
-    (unstable, async_closure, "1.37.0", Some(62290), None),
+    (unstable, async_closure, "1.37.0", Some(62290)),
     /// Allows `#[track_caller]` on async functions.
-    (unstable, async_fn_track_caller, "1.73.0", Some(110011), None),
+    (unstable, async_fn_track_caller, "1.73.0", Some(110011)),
     /// Allows builtin # foo() syntax
-    (unstable, builtin_syntax, "1.71.0", Some(110680), None),
+    (unstable, builtin_syntax, "1.71.0", Some(110680)),
     /// Treat `extern "C"` function as nounwind.
-    (unstable, c_unwind, "1.52.0", Some(74990), None),
+    (unstable, c_unwind, "1.52.0", Some(74990)),
     /// Allows using C-variadics.
-    (unstable, c_variadic, "1.34.0", Some(44930), None),
+    (unstable, c_variadic, "1.34.0", Some(44930)),
     /// Allows the use of `#[cfg(overflow_checks)` to check if integer overflow behaviour.
-    (unstable, cfg_overflow_checks, "1.71.0", Some(111466), None),
+    (unstable, cfg_overflow_checks, "1.71.0", Some(111466)),
     /// Provides the relocation model information as cfg entry
-    (unstable, cfg_relocation_model, "1.73.0", Some(114929), None),
+    (unstable, cfg_relocation_model, "1.73.0", Some(114929)),
     /// Allows the use of `#[cfg(sanitize = "option")]`; set when -Zsanitizer is used.
-    (unstable, cfg_sanitize, "1.41.0", Some(39699), None),
+    (unstable, cfg_sanitize, "1.41.0", Some(39699)),
     /// Allows `cfg(target_abi = "...")`.
-    (unstable, cfg_target_abi, "1.55.0", Some(80970), None),
+    (unstable, cfg_target_abi, "1.55.0", Some(80970)),
     /// Allows `cfg(target(abi = "..."))`.
-    (unstable, cfg_target_compact, "1.63.0", Some(96901), None),
+    (unstable, cfg_target_compact, "1.63.0", Some(96901)),
     /// Allows `cfg(target_has_atomic_load_store = "...")`.
-    (unstable, cfg_target_has_atomic, "1.60.0", Some(94039), None),
+    (unstable, cfg_target_has_atomic, "1.60.0", Some(94039)),
     /// Allows `cfg(target_has_atomic_equal_alignment = "...")`.
-    (unstable, cfg_target_has_atomic_equal_alignment, "1.60.0", Some(93822), None),
+    (unstable, cfg_target_has_atomic_equal_alignment, "1.60.0", Some(93822)),
     /// Allows `cfg(target_thread_local)`.
-    (unstable, cfg_target_thread_local, "1.7.0", Some(29594), None),
+    (unstable, cfg_target_thread_local, "1.7.0", Some(29594)),
     /// Allow conditional compilation depending on rust version
-    (unstable, cfg_version, "1.45.0", Some(64796), None),
+    (unstable, cfg_version, "1.45.0", Some(64796)),
     /// Allows to use the `#[cfi_encoding = ""]` attribute.
-    (unstable, cfi_encoding, "1.71.0", Some(89653), None),
+    (unstable, cfi_encoding, "1.71.0", Some(89653)),
     /// Allows `for<...>` on closures and coroutines.
-    (unstable, closure_lifetime_binder, "1.64.0", Some(97362), None),
+    (unstable, closure_lifetime_binder, "1.64.0", Some(97362)),
     /// Allows `#[track_caller]` on closures and coroutines.
-    (unstable, closure_track_caller, "1.57.0", Some(87417), None),
+    (unstable, closure_track_caller, "1.57.0", Some(87417)),
     /// Allows to use the `#[cmse_nonsecure_entry]` attribute.
-    (unstable, cmse_nonsecure_entry, "1.48.0", Some(75835), None),
+    (unstable, cmse_nonsecure_entry, "1.48.0", Some(75835)),
     /// Allows use of the `#[collapse_debuginfo]` attribute.
-    (unstable, collapse_debuginfo, "1.65.0", Some(100758), None),
+    (unstable, collapse_debuginfo, "1.65.0", Some(100758)),
     /// Allows `async {}` expressions in const contexts.
-    (unstable, const_async_blocks, "1.53.0", Some(85368), None),
+    (unstable, const_async_blocks, "1.53.0", Some(85368)),
     /// Allows `const || {}` closures in const contexts.
-    (incomplete, const_closures, "1.68.0", Some(106003), None),
+    (incomplete, const_closures, "1.68.0", Some(106003)),
     /// Allows the definition of `const extern fn` and `const unsafe extern fn`.
-    (unstable, const_extern_fn, "1.40.0", Some(64926), None),
+    (unstable, const_extern_fn, "1.40.0", Some(64926)),
     /// Allows basic arithmetic on floating point types in a `const fn`.
-    (unstable, const_fn_floating_point_arithmetic, "1.48.0", Some(57241), None),
+    (unstable, const_fn_floating_point_arithmetic, "1.48.0", Some(57241)),
     /// Allows `for _ in _` loops in const contexts.
-    (unstable, const_for, "1.56.0", Some(87575), None),
+    (unstable, const_for, "1.56.0", Some(87575)),
     /// Allows using `&mut` in constant functions.
-    (unstable, const_mut_refs, "1.41.0", Some(57349), None),
+    (unstable, const_mut_refs, "1.41.0", Some(57349)),
     /// Be more precise when looking for live drops in a const context.
-    (unstable, const_precise_live_drops, "1.46.0", Some(73255), None),
+    (unstable, const_precise_live_drops, "1.46.0", Some(73255)),
     /// Allows references to types with interior mutability within constants
-    (unstable, const_refs_to_cell, "1.51.0", Some(80384), None),
+    (unstable, const_refs_to_cell, "1.51.0", Some(80384)),
     /// Allows `impl const Trait for T` syntax.
-    (unstable, const_trait_impl, "1.42.0", Some(67792), None),
+    (unstable, const_trait_impl, "1.42.0", Some(67792)),
     /// Allows the `?` operator in const contexts.
-    (unstable, const_try, "1.56.0", Some(74935), None),
+    (unstable, const_try, "1.56.0", Some(74935)),
     /// Allows coroutines to be cloned.
-    (unstable, coroutine_clone, "1.65.0", Some(95360), None),
+    (unstable, coroutine_clone, "1.65.0", Some(95360)),
     /// Allows defining coroutines.
-    (unstable, coroutines, "1.21.0", Some(43122), None),
+    (unstable, coroutines, "1.21.0", Some(43122)),
     /// Allows function attribute `#[coverage(on/off)]`, to control coverage
     /// instrumentation of that function.
-    (unstable, coverage_attribute, "1.74.0", Some(84605), None),
+    (unstable, coverage_attribute, "1.74.0", Some(84605)),
     /// Allows users to provide classes for fenced code block using `class:classname`.
-    (unstable, custom_code_classes_in_docs, "1.74.0", Some(79483), None),
+    (unstable, custom_code_classes_in_docs, "1.74.0", Some(79483)),
     /// Allows non-builtin attributes in inner attribute position.
-    (unstable, custom_inner_attributes, "1.30.0", Some(54726), None),
+    (unstable, custom_inner_attributes, "1.30.0", Some(54726)),
     /// Allows custom test frameworks with `#![test_runner]` and `#[test_case]`.
-    (unstable, custom_test_frameworks, "1.30.0", Some(50297), None),
+    (unstable, custom_test_frameworks, "1.30.0", Some(50297)),
     /// Allows declarative macros 2.0 (`macro`).
-    (unstable, decl_macro, "1.17.0", Some(39412), None),
+    (unstable, decl_macro, "1.17.0", Some(39412)),
     /// Allows default type parameters to influence type inference.
-    (unstable, default_type_parameter_fallback, "1.3.0", Some(27336), None),
+    (unstable, default_type_parameter_fallback, "1.3.0", Some(27336)),
     /// Allows using `#[deprecated_safe]` to deprecate the safeness of a function or trait
-    (unstable, deprecated_safe, "1.61.0", Some(94978), None),
+    (unstable, deprecated_safe, "1.61.0", Some(94978)),
     /// Allows having using `suggestion` in the `#[deprecated]` attribute.
-    (unstable, deprecated_suggestion, "1.61.0", Some(94785), None),
+    (unstable, deprecated_suggestion, "1.61.0", Some(94785)),
     /// Allows using the `#[diagnostic]` attribute tool namespace
-    (unstable, diagnostic_namespace, "1.73.0", Some(111996), None),
+    (unstable, diagnostic_namespace, "1.73.0", Some(111996)),
     /// Controls errors in trait implementations.
-    (unstable, do_not_recommend, "1.67.0", Some(51992), None),
+    (unstable, do_not_recommend, "1.67.0", Some(51992)),
     /// Tells rustdoc to automatically generate `#[doc(cfg(...))]`.
-    (unstable, doc_auto_cfg, "1.58.0", Some(43781), None),
+    (unstable, doc_auto_cfg, "1.58.0", Some(43781)),
     /// Allows `#[doc(cfg(...))]`.
-    (unstable, doc_cfg, "1.21.0", Some(43781), None),
+    (unstable, doc_cfg, "1.21.0", Some(43781)),
     /// Allows `#[doc(cfg_hide(...))]`.
-    (unstable, doc_cfg_hide, "1.57.0", Some(43781), None),
+    (unstable, doc_cfg_hide, "1.57.0", Some(43781)),
     /// Allows `#[doc(masked)]`.
-    (unstable, doc_masked, "1.21.0", Some(44027), None),
+    (unstable, doc_masked, "1.21.0", Some(44027)),
     /// Allows `dyn* Trait` objects.
-    (incomplete, dyn_star, "1.65.0", Some(102425), None),
+    (incomplete, dyn_star, "1.65.0", Some(102425)),
     // Uses generic effect parameters for ~const bounds
-    (unstable, effects, "1.72.0", Some(102090), None),
+    (unstable, effects, "1.72.0", Some(102090)),
     /// Allows `X..Y` patterns.
-    (unstable, exclusive_range_pattern, "1.11.0", Some(37854), None),
+    (unstable, exclusive_range_pattern, "1.11.0", Some(37854)),
     /// Allows exhaustive pattern matching on types that contain uninhabited types.
-    (unstable, exhaustive_patterns, "1.13.0", Some(51085), None),
+    (unstable, exhaustive_patterns, "1.13.0", Some(51085)),
     /// Allows explicit tail calls via `become` expression.
-    (incomplete, explicit_tail_calls, "1.72.0", Some(112788), None),
+    (incomplete, explicit_tail_calls, "1.72.0", Some(112788)),
     /// Allows using `efiapi`, `sysv64` and `win64` as calling convention
     /// for functions with varargs.
-    (unstable, extended_varargs_abi_support, "1.65.0", Some(100189), None),
+    (unstable, extended_varargs_abi_support, "1.65.0", Some(100189)),
     /// Allows defining `extern type`s.
-    (unstable, extern_types, "1.23.0", Some(43467), None),
+    (unstable, extern_types, "1.23.0", Some(43467)),
     /// Allows the use of `#[ffi_const]` on foreign functions.
-    (unstable, ffi_const, "1.45.0", Some(58328), None),
+    (unstable, ffi_const, "1.45.0", Some(58328)),
     /// Allows the use of `#[ffi_pure]` on foreign functions.
-    (unstable, ffi_pure, "1.45.0", Some(58329), None),
+    (unstable, ffi_pure, "1.45.0", Some(58329)),
     /// Allows using `#[ffi_returns_twice]` on foreign functions.
-    (unstable, ffi_returns_twice, "1.34.0", Some(58314), None),
+    (unstable, ffi_returns_twice, "1.34.0", Some(58314)),
     /// Allows using `#[repr(align(...))]` on function items
-    (unstable, fn_align, "1.53.0", Some(82232), None),
+    (unstable, fn_align, "1.53.0", Some(82232)),
     /// Support delegating implementation of functions to other already implemented functions.
-    (incomplete, fn_delegation, "CURRENT_RUSTC_VERSION", Some(118212), None),
+    (incomplete, fn_delegation, "CURRENT_RUSTC_VERSION", Some(118212)),
     /// Allows defining gen blocks and `gen fn`.
-    (unstable, gen_blocks, "1.75.0", Some(117078), None),
+    (unstable, gen_blocks, "1.75.0", Some(117078)),
     /// Infer generic args for both consts and types.
-    (unstable, generic_arg_infer, "1.55.0", Some(85077), None),
+    (unstable, generic_arg_infer, "1.55.0", Some(85077)),
     /// An extension to the `generic_associated_types` feature, allowing incomplete features.
-    (incomplete, generic_associated_types_extended, "1.61.0", Some(95451), None),
+    (incomplete, generic_associated_types_extended, "1.61.0", Some(95451)),
     /// Allows non-trivial generic constants which have to have wfness manually propagated to callers
-    (incomplete, generic_const_exprs, "1.56.0", Some(76560), None),
+    (incomplete, generic_const_exprs, "1.56.0", Some(76560)),
     /// Allows generic parameters and where-clauses on free & associated const items.
-    (incomplete, generic_const_items, "1.73.0", Some(113521), None),
+    (incomplete, generic_const_items, "1.73.0", Some(113521)),
     /// Allows using `..=X` as a patterns in slices.
-    (unstable, half_open_range_patterns_in_slices, "1.66.0", Some(67264), None),
+    (unstable, half_open_range_patterns_in_slices, "1.66.0", Some(67264)),
     /// Allows `if let` guard in match arms.
-    (unstable, if_let_guard, "1.47.0", Some(51114), None),
+    (unstable, if_let_guard, "1.47.0", Some(51114)),
     /// Allows `impl Trait` to be used inside associated types (RFC 2515).
-    (unstable, impl_trait_in_assoc_type, "1.70.0", Some(63063), None),
+    (unstable, impl_trait_in_assoc_type, "1.70.0", Some(63063)),
     /// Allows `impl Trait` as output type in `Fn` traits in return position of functions.
-    (unstable, impl_trait_in_fn_trait_return, "1.64.0", Some(99697), None),
+    (unstable, impl_trait_in_fn_trait_return, "1.64.0", Some(99697)),
     /// Allows using imported `main` function
-    (unstable, imported_main, "1.53.0", Some(28937), None),
+    (unstable, imported_main, "1.53.0", Some(28937)),
     /// Allows associated types in inherent impls.
-    (incomplete, inherent_associated_types, "1.52.0", Some(8995), None),
+    (incomplete, inherent_associated_types, "1.52.0", Some(8995)),
     /// Allow anonymous constants from an inline `const` block
-    (unstable, inline_const, "1.49.0", Some(76001), None),
+    (unstable, inline_const, "1.49.0", Some(76001)),
     /// Allow anonymous constants from an inline `const` block in pattern position
-    (incomplete, inline_const_pat, "1.58.0", Some(76001), None),
+    (incomplete, inline_const_pat, "1.58.0", Some(76001)),
     /// Allows using `pointer` and `reference` in intra-doc links
-    (unstable, intra_doc_pointers, "1.51.0", Some(80896), None),
+    (unstable, intra_doc_pointers, "1.51.0", Some(80896)),
     // Allows setting the threshold for the `large_assignments` lint.
-    (unstable, large_assignments, "1.52.0", Some(83518), None),
+    (unstable, large_assignments, "1.52.0", Some(83518)),
     /// Allow to have type alias types for inter-crate use.
-    (incomplete, lazy_type_alias, "1.72.0", Some(112792), None),
+    (incomplete, lazy_type_alias, "1.72.0", Some(112792)),
     /// Allows `if/while p && let q = r && ...` chains.
-    (unstable, let_chains, "1.37.0", Some(53667), None),
+    (unstable, let_chains, "1.37.0", Some(53667)),
     /// Allows using `#[link(kind = "link-arg", name = "...")]`
     /// to pass custom arguments to the linker.
-    (unstable, link_arg_attribute, "CURRENT_RUSTC_VERSION", Some(99427), None),
+    (unstable, link_arg_attribute, "CURRENT_RUSTC_VERSION", Some(99427)),
     /// Allows using `reason` in lint attributes and the `#[expect(lint)]` lint check.
-    (unstable, lint_reasons, "1.31.0", Some(54503), None),
+    (unstable, lint_reasons, "1.31.0", Some(54503)),
     /// Give access to additional metadata about declarative macro meta-variables.
-    (unstable, macro_metavar_expr, "1.61.0", Some(83527), None),
+    (unstable, macro_metavar_expr, "1.61.0", Some(83527)),
     /// Allows `#[marker]` on certain traits allowing overlapping implementations.
-    (unstable, marker_trait_attr, "1.30.0", Some(29864), None),
+    (unstable, marker_trait_attr, "1.30.0", Some(29864)),
     /// A minimal, sound subset of specialization intended to be used by the
     /// standard library until the soundness issues with specialization
     /// are fixed.
-    (unstable, min_specialization, "1.7.0", Some(31844), None),
+    (unstable, min_specialization, "1.7.0", Some(31844)),
     /// Allows qualified paths in struct expressions, struct patterns and tuple struct patterns.
-    (unstable, more_qualified_paths, "1.54.0", Some(86935), None),
+    (unstable, more_qualified_paths, "1.54.0", Some(86935)),
     /// Allows the `#[must_not_suspend]` attribute.
-    (unstable, must_not_suspend, "1.57.0", Some(83310), None),
+    (unstable, must_not_suspend, "1.57.0", Some(83310)),
     /// Allows using `#[naked]` on functions.
-    (unstable, naked_functions, "1.9.0", Some(32408), None),
+    (unstable, naked_functions, "1.9.0", Some(32408)),
     /// Allows specifying the as-needed link modifier
-    (unstable, native_link_modifiers_as_needed, "1.53.0", Some(81490), None),
+    (unstable, native_link_modifiers_as_needed, "1.53.0", Some(81490)),
     /// Allow negative trait implementations.
-    (unstable, negative_impls, "1.44.0", Some(68318), None),
+    (unstable, negative_impls, "1.44.0", Some(68318)),
     /// Allows the `!` pattern.
-    (incomplete, never_patterns, "CURRENT_RUSTC_VERSION", Some(118155), None),
+    (incomplete, never_patterns, "CURRENT_RUSTC_VERSION", Some(118155)),
     /// Allows the `!` type. Does not imply 'exhaustive_patterns' (below) any more.
-    (unstable, never_type, "1.13.0", Some(35121), None),
+    (unstable, never_type, "1.13.0", Some(35121)),
     /// Allows diverging expressions to fall back to `!` rather than `()`.
-    (unstable, never_type_fallback, "1.41.0", Some(65992), None),
+    (unstable, never_type_fallback, "1.41.0", Some(65992)),
     /// Allows `#![no_core]`.
-    (unstable, no_core, "1.3.0", Some(29639), None),
+    (unstable, no_core, "1.3.0", Some(29639)),
     /// Allows the use of `no_sanitize` attribute.
-    (unstable, no_sanitize, "1.42.0", Some(39699), None),
+    (unstable, no_sanitize, "1.42.0", Some(39699)),
     /// Allows using the `non_exhaustive_omitted_patterns` lint.
-    (unstable, non_exhaustive_omitted_patterns_lint, "1.57.0", Some(89554), None),
+    (unstable, non_exhaustive_omitted_patterns_lint, "1.57.0", Some(89554)),
     /// Allows `for<T>` binders in where-clauses
-    (incomplete, non_lifetime_binders, "1.69.0", Some(108185), None),
+    (incomplete, non_lifetime_binders, "1.69.0", Some(108185)),
     /// Allows making `dyn Trait` well-formed even if `Trait` is not object safe.
     /// In that case, `dyn Trait: Trait` does not hold. Moreover, coercions and
     /// casts in safe Rust to `dyn Trait` for such a `Trait` is also forbidden.
-    (unstable, object_safe_for_dispatch, "1.40.0", Some(43561), None),
+    (unstable, object_safe_for_dispatch, "1.40.0", Some(43561)),
     /// Allows using enums in offset_of!
-    (unstable, offset_of_enum, "1.75.0", Some(106655), None),
+    (unstable, offset_of_enum, "1.75.0", Some(106655)),
     /// Allows using `#[optimize(X)]`.
-    (unstable, optimize_attribute, "1.34.0", Some(54882), None),
+    (unstable, optimize_attribute, "1.34.0", Some(54882)),
     /// Allows macro attributes on expressions, statements and non-inline modules.
-    (unstable, proc_macro_hygiene, "1.30.0", Some(54727), None),
+    (unstable, proc_macro_hygiene, "1.30.0", Some(54727)),
     /// Allows `&raw const $place_expr` and `&raw mut $place_expr` expressions.
-    (unstable, raw_ref_op, "1.41.0", Some(64490), None),
+    (unstable, raw_ref_op, "1.41.0", Some(64490)),
     /// Allows using the `#[register_tool]` attribute.
-    (unstable, register_tool, "1.41.0", Some(66079), None),
+    (unstable, register_tool, "1.41.0", Some(66079)),
     /// Allows the `#[repr(i128)]` attribute for enums.
-    (incomplete, repr128, "1.16.0", Some(56071), None),
+    (incomplete, repr128, "1.16.0", Some(56071)),
     /// Allows `repr(simd)` and importing the various simd intrinsics.
-    (unstable, repr_simd, "1.4.0", Some(27731), None),
+    (unstable, repr_simd, "1.4.0", Some(27731)),
     /// Allows bounding the return type of AFIT/RPITIT.
-    (incomplete, return_type_notation, "1.70.0", Some(109417), None),
+    (incomplete, return_type_notation, "1.70.0", Some(109417)),
     /// Allows `extern "rust-cold"`.
-    (unstable, rust_cold_cc, "1.63.0", Some(97544), None),
+    (unstable, rust_cold_cc, "1.63.0", Some(97544)),
     /// Allows the use of SIMD types in functions declared in `extern` blocks.
-    (unstable, simd_ffi, "1.0.0", Some(27731), None),
+    (unstable, simd_ffi, "1.0.0", Some(27731)),
     /// Allows specialization of implementations (RFC 1210).
-    (incomplete, specialization, "1.7.0", Some(31844), None),
+    (incomplete, specialization, "1.7.0", Some(31844)),
     /// Allows attributes on expressions and non-item statements.
-    (unstable, stmt_expr_attributes, "1.6.0", Some(15701), None),
+    (unstable, stmt_expr_attributes, "1.6.0", Some(15701)),
     /// Allows lints part of the strict provenance effort.
-    (unstable, strict_provenance, "1.61.0", Some(95228), None),
+    (unstable, strict_provenance, "1.61.0", Some(95228)),
     /// Allows string patterns to dereference values to match them.
-    (unstable, string_deref_patterns, "1.67.0", Some(87121), None),
+    (unstable, string_deref_patterns, "1.67.0", Some(87121)),
     /// Allows the use of `#[target_feature]` on safe functions.
-    (unstable, target_feature_11, "1.45.0", Some(69098), None),
+    (unstable, target_feature_11, "1.45.0", Some(69098)),
     /// Allows using `#[thread_local]` on `static` items.
-    (unstable, thread_local, "1.0.0", Some(29594), None),
+    (unstable, thread_local, "1.0.0", Some(29594)),
     /// Allows defining `trait X = A + B;` alias items.
-    (unstable, trait_alias, "1.24.0", Some(41517), None),
+    (unstable, trait_alias, "1.24.0", Some(41517)),
     /// Allows for transmuting between arrays with sizes that contain generic consts.
-    (unstable, transmute_generic_consts, "1.70.0", Some(109929), None),
+    (unstable, transmute_generic_consts, "1.70.0", Some(109929)),
     /// Allows #[repr(transparent)] on unions (RFC 2645).
-    (unstable, transparent_unions, "1.37.0", Some(60405), None),
+    (unstable, transparent_unions, "1.37.0", Some(60405)),
     /// Allows inconsistent bounds in where clauses.
-    (unstable, trivial_bounds, "1.28.0", Some(48214), None),
+    (unstable, trivial_bounds, "1.28.0", Some(48214)),
     /// Allows using `try {...}` expressions.
-    (unstable, try_blocks, "1.29.0", Some(31436), None),
+    (unstable, try_blocks, "1.29.0", Some(31436)),
     /// Allows `impl Trait` to be used inside type aliases (RFC 2515).
-    (unstable, type_alias_impl_trait, "1.38.0", Some(63063), None),
+    (unstable, type_alias_impl_trait, "1.38.0", Some(63063)),
     /// Allows the use of type ascription in expressions.
-    (unstable, type_ascription, "1.6.0", Some(23416), None),
+    (unstable, type_ascription, "1.6.0", Some(23416)),
     /// Allows creation of instances of a struct by moving fields that have
     /// not changed from prior instances of the same struct (RFC #2528)
-    (unstable, type_changing_struct_update, "1.58.0", Some(86555), None),
+    (unstable, type_changing_struct_update, "1.58.0", Some(86555)),
     /// Allows using type privacy lints (`private_interfaces`, `private_bounds`, `unnameable_types`).
-    (unstable, type_privacy_lints, "1.72.0", Some(48054), None),
+    (unstable, type_privacy_lints, "1.72.0", Some(48054)),
     /// Enables rustc to generate code that instructs libstd to NOT ignore SIGPIPE.
-    (unstable, unix_sigpipe, "1.65.0", Some(97889), None),
+    (unstable, unix_sigpipe, "1.65.0", Some(97889)),
     /// Allows unnamed fields of struct and union type
-    (incomplete, unnamed_fields, "1.74.0", Some(49804), None),
+    (incomplete, unnamed_fields, "1.74.0", Some(49804)),
     /// Allows unsized fn parameters.
-    (unstable, unsized_fn_params, "1.49.0", Some(48055), None),
+    (unstable, unsized_fn_params, "1.49.0", Some(48055)),
     /// Allows unsized rvalues at arguments and parameters.
-    (incomplete, unsized_locals, "1.30.0", Some(48055), None),
+    (incomplete, unsized_locals, "1.30.0", Some(48055)),
     /// Allows unsized tuple coercion.
-    (unstable, unsized_tuple_coercion, "1.20.0", Some(42877), None),
+    (unstable, unsized_tuple_coercion, "1.20.0", Some(42877)),
     /// Allows using the `#[used(linker)]` (or `#[used(compiler)]`) attribute.
-    (unstable, used_with_arg, "1.60.0", Some(93798), None),
+    (unstable, used_with_arg, "1.60.0", Some(93798)),
     /// Allows `extern "wasm" fn`
-    (unstable, wasm_abi, "1.53.0", Some(83788), None),
+    (unstable, wasm_abi, "1.53.0", Some(83788)),
     /// Allows `do yeet` expressions
-    (unstable, yeet_expr, "1.62.0", Some(96373), None),
+    (unstable, yeet_expr, "1.62.0", Some(96373)),
     // !!!!    !!!!    !!!!    !!!!   !!!!    !!!!    !!!!    !!!!    !!!!    !!!!    !!!!
     // Features are listed in alphabetical order. Tidy will fail if you don't keep it this way.
     // !!!!    !!!!    !!!!    !!!!   !!!!    !!!!    !!!!    !!!!    !!!!    !!!!    !!!!
diff --git a/compiler/rustc_lint/src/builtin.rs b/compiler/rustc_lint/src/builtin.rs
index 930e29f2389..32eb67ba3a1 100644
--- a/compiler/rustc_lint/src/builtin.rs
+++ b/compiler/rustc_lint/src/builtin.rs
@@ -1835,7 +1835,7 @@ impl KeywordIdents {
                         self.check_ident_token(cx, UnderMacro(true), ident);
                     }
                 }
-                TokenTree::Delimited(_, _, tts) => self.check_tokens(cx, tts),
+                TokenTree::Delimited(.., tts) => self.check_tokens(cx, tts),
             }
         }
     }
diff --git a/compiler/rustc_parse/src/lexer/mod.rs b/compiler/rustc_parse/src/lexer/mod.rs
index 92df2da8710..b1dc1f98777 100644
--- a/compiler/rustc_parse/src/lexer/mod.rs
+++ b/compiler/rustc_parse/src/lexer/mod.rs
@@ -67,7 +67,7 @@ pub(crate) fn parse_token_trees<'a>(
     let (stream, res, unmatched_delims) =
         tokentrees::TokenTreesReader::parse_all_token_trees(string_reader);
     match res {
-        Ok(()) if unmatched_delims.is_empty() => Ok(stream),
+        Ok(_open_spacing) if unmatched_delims.is_empty() => Ok(stream),
         _ => {
             // Return error if there are unmatched delimiters or unclosed delimiters.
             // We emit delimiter mismatch errors first, then emit the unclosing delimiter mismatch
diff --git a/compiler/rustc_parse/src/lexer/tokentrees.rs b/compiler/rustc_parse/src/lexer/tokentrees.rs
index e646f5dfd85..8cbadc26635 100644
--- a/compiler/rustc_parse/src/lexer/tokentrees.rs
+++ b/compiler/rustc_parse/src/lexer/tokentrees.rs
@@ -3,7 +3,7 @@ use super::diagnostics::same_indentation_level;
 use super::diagnostics::TokenTreeDiagInfo;
 use super::{StringReader, UnmatchedDelim};
 use rustc_ast::token::{self, Delimiter, Token};
-use rustc_ast::tokenstream::{DelimSpan, Spacing, TokenStream, TokenTree};
+use rustc_ast::tokenstream::{DelimSpacing, DelimSpan, Spacing, TokenStream, TokenTree};
 use rustc_ast_pretty::pprust::token_to_string;
 use rustc_errors::{Applicability, PErr};
 use rustc_span::symbol::kw;
@@ -25,54 +25,46 @@ impl<'a> TokenTreesReader<'a> {
             token: Token::dummy(),
             diag_info: TokenTreeDiagInfo::default(),
         };
-        let (stream, res) = tt_reader.parse_token_trees(/* is_delimited */ false);
+        let (_open_spacing, stream, res) =
+            tt_reader.parse_token_trees(/* is_delimited */ false);
         (stream, res, tt_reader.diag_info.unmatched_delims)
     }
 
-    // Parse a stream of tokens into a list of `TokenTree`s.
+    // Parse a stream of tokens into a list of `TokenTree`s. The `Spacing` in
+    // the result is that of the opening delimiter.
     fn parse_token_trees(
         &mut self,
         is_delimited: bool,
-    ) -> (TokenStream, Result<(), Vec<PErr<'a>>>) {
-        self.token = self.string_reader.next_token().0;
+    ) -> (Spacing, TokenStream, Result<(), Vec<PErr<'a>>>) {
+        // Move past the opening delimiter.
+        let (_, open_spacing) = self.bump(false);
+
         let mut buf = Vec::new();
         loop {
             match self.token.kind {
                 token::OpenDelim(delim) => {
                     buf.push(match self.parse_token_tree_open_delim(delim) {
                         Ok(val) => val,
-                        Err(errs) => return (TokenStream::new(buf), Err(errs)),
+                        Err(errs) => return (open_spacing, TokenStream::new(buf), Err(errs)),
                     })
                 }
                 token::CloseDelim(delim) => {
                     return (
+                        open_spacing,
                         TokenStream::new(buf),
                         if is_delimited { Ok(()) } else { Err(vec![self.close_delim_err(delim)]) },
                     );
                 }
                 token::Eof => {
                     return (
+                        open_spacing,
                         TokenStream::new(buf),
                         if is_delimited { Err(vec![self.eof_err()]) } else { Ok(()) },
                     );
                 }
                 _ => {
-                    // Get the next normal token. This might require getting multiple adjacent
-                    // single-char tokens and joining them together.
-                    let (this_spacing, next_tok) = loop {
-                        let (next_tok, is_next_tok_preceded_by_whitespace) =
-                            self.string_reader.next_token();
-                        if is_next_tok_preceded_by_whitespace {
-                            break (Spacing::Alone, next_tok);
-                        } else if let Some(glued) = self.token.glue(&next_tok) {
-                            self.token = glued;
-                        } else {
-                            let this_spacing =
-                                if next_tok.is_punct() { Spacing::Joint } else { Spacing::Alone };
-                            break (this_spacing, next_tok);
-                        }
-                    };
-                    let this_tok = std::mem::replace(&mut self.token, next_tok);
+                    // Get the next normal token.
+                    let (this_tok, this_spacing) = self.bump(true);
                     buf.push(TokenTree::Token(this_tok, this_spacing));
                 }
             }
@@ -116,7 +108,7 @@ impl<'a> TokenTreesReader<'a> {
         // Parse the token trees within the delimiters.
         // We stop at any delimiter so we can try to recover if the user
         // uses an incorrect delimiter.
-        let (tts, res) = self.parse_token_trees(/* is_delimited */ true);
+        let (open_spacing, tts, res) = self.parse_token_trees(/* is_delimited */ true);
         if let Err(errs) = res {
             return Err(self.unclosed_delim_err(tts, errs));
         }
@@ -125,7 +117,7 @@ impl<'a> TokenTreesReader<'a> {
         let delim_span = DelimSpan::from_pair(pre_span, self.token.span);
         let sm = self.string_reader.sess.source_map();
 
-        match self.token.kind {
+        let close_spacing = match self.token.kind {
             // Correct delimiter.
             token::CloseDelim(close_delim) if close_delim == open_delim => {
                 let (open_brace, open_brace_span) = self.diag_info.open_braces.pop().unwrap();
@@ -147,7 +139,7 @@ impl<'a> TokenTreesReader<'a> {
                 }
 
                 // Move past the closing delimiter.
-                self.token = self.string_reader.next_token().0;
+                self.bump(false).1
             }
             // Incorrect delimiter.
             token::CloseDelim(close_delim) => {
@@ -191,18 +183,50 @@ impl<'a> TokenTreesReader<'a> {
                 //     bar(baz(
                 // }  // Incorrect delimiter but matches the earlier `{`
                 if !self.diag_info.open_braces.iter().any(|&(b, _)| b == close_delim) {
-                    self.token = self.string_reader.next_token().0;
+                    self.bump(false).1
+                } else {
+                    // The choice of value here doesn't matter.
+                    Spacing::Alone
                 }
             }
             token::Eof => {
                 // Silently recover, the EOF token will be seen again
                 // and an error emitted then. Thus we don't pop from
-                // self.open_braces here.
+                // self.open_braces here. The choice of spacing value here
+                // doesn't matter.
+                Spacing::Alone
             }
             _ => unreachable!(),
-        }
+        };
+
+        let spacing = DelimSpacing::new(open_spacing, close_spacing);
 
-        Ok(TokenTree::Delimited(delim_span, open_delim, tts))
+        Ok(TokenTree::Delimited(delim_span, spacing, open_delim, tts))
+    }
+
+    // Move on to the next token, returning the current token and its spacing.
+    // Will glue adjacent single-char tokens together if `glue` is set.
+    fn bump(&mut self, glue: bool) -> (Token, Spacing) {
+        let (this_spacing, next_tok) = loop {
+            let (next_tok, is_next_tok_preceded_by_whitespace) = self.string_reader.next_token();
+
+            if is_next_tok_preceded_by_whitespace {
+                break (Spacing::Alone, next_tok);
+            } else if glue && let Some(glued) = self.token.glue(&next_tok) {
+                self.token = glued;
+            } else {
+                let this_spacing = if next_tok.is_punct() {
+                    Spacing::Joint
+                } else if next_tok.kind == token::Eof {
+                    Spacing::Alone
+                } else {
+                    Spacing::JointHidden
+                };
+                break (this_spacing, next_tok);
+            }
+        };
+        let this_tok = std::mem::replace(&mut self.token, next_tok);
+        (this_tok, this_spacing)
     }
 
     fn unclosed_delim_err(&mut self, tts: TokenStream, mut errs: Vec<PErr<'a>>) -> Vec<PErr<'a>> {
diff --git a/compiler/rustc_parse/src/parser/attr_wrapper.rs b/compiler/rustc_parse/src/parser/attr_wrapper.rs
index c66a7176aab..5e8447030f1 100644
--- a/compiler/rustc_parse/src/parser/attr_wrapper.rs
+++ b/compiler/rustc_parse/src/parser/attr_wrapper.rs
@@ -1,7 +1,7 @@
 use super::{Capturing, FlatToken, ForceCollect, Parser, ReplaceRange, TokenCursor, TrailingToken};
 use rustc_ast::token::{self, Delimiter, Token, TokenKind};
-use rustc_ast::tokenstream::{AttrTokenStream, AttributesData, ToAttrTokenStream};
-use rustc_ast::tokenstream::{AttrTokenTree, DelimSpan, LazyAttrTokenStream, Spacing};
+use rustc_ast::tokenstream::{AttrTokenStream, AttrTokenTree, AttributesData, DelimSpacing};
+use rustc_ast::tokenstream::{DelimSpan, LazyAttrTokenStream, Spacing, ToAttrTokenStream};
 use rustc_ast::{self as ast};
 use rustc_ast::{AttrVec, Attribute, HasAttrs, HasTokens};
 use rustc_errors::PResult;
@@ -389,7 +389,7 @@ fn make_token_stream(
     #[derive(Debug)]
     struct FrameData {
         // This is `None` for the first frame, `Some` for all others.
-        open_delim_sp: Option<(Delimiter, Span)>,
+        open_delim_sp: Option<(Delimiter, Span, Spacing)>,
         inner: Vec<AttrTokenTree>,
     }
     let mut stack = vec![FrameData { open_delim_sp: None, inner: vec![] }];
@@ -397,21 +397,23 @@ fn make_token_stream(
     while let Some((token, spacing)) = token_and_spacing {
         match token {
             FlatToken::Token(Token { kind: TokenKind::OpenDelim(delim), span }) => {
-                stack.push(FrameData { open_delim_sp: Some((delim, span)), inner: vec![] });
+                stack
+                    .push(FrameData { open_delim_sp: Some((delim, span, spacing)), inner: vec![] });
             }
             FlatToken::Token(Token { kind: TokenKind::CloseDelim(delim), span }) => {
                 let frame_data = stack
                     .pop()
                     .unwrap_or_else(|| panic!("Token stack was empty for token: {token:?}"));
 
-                let (open_delim, open_sp) = frame_data.open_delim_sp.unwrap();
+                let (open_delim, open_sp, open_spacing) = frame_data.open_delim_sp.unwrap();
                 assert_eq!(
                     open_delim, delim,
                     "Mismatched open/close delims: open={open_delim:?} close={span:?}"
                 );
                 let dspan = DelimSpan::from_pair(open_sp, span);
+                let dspacing = DelimSpacing::new(open_spacing, spacing);
                 let stream = AttrTokenStream::new(frame_data.inner);
-                let delimited = AttrTokenTree::Delimited(dspan, delim, stream);
+                let delimited = AttrTokenTree::Delimited(dspan, dspacing, delim, stream);
                 stack
                     .last_mut()
                     .unwrap_or_else(|| panic!("Bottom token frame is missing for token: {token:?}"))
diff --git a/compiler/rustc_parse/src/parser/expr.rs b/compiler/rustc_parse/src/parser/expr.rs
index 406a6def019..3c0627526be 100644
--- a/compiler/rustc_parse/src/parser/expr.rs
+++ b/compiler/rustc_parse/src/parser/expr.rs
@@ -2276,7 +2276,7 @@ impl<'a> Parser<'a> {
         }
 
         if self.token.kind == TokenKind::Semi
-            && matches!(self.token_cursor.stack.last(), Some((_, Delimiter::Parenthesis, _)))
+            && matches!(self.token_cursor.stack.last(), Some((.., Delimiter::Parenthesis)))
             && self.may_recover()
         {
             // It is likely that the closure body is a block but where the
diff --git a/compiler/rustc_parse/src/parser/mod.rs b/compiler/rustc_parse/src/parser/mod.rs
index 7a306823ed4..2baedb2766f 100644
--- a/compiler/rustc_parse/src/parser/mod.rs
+++ b/compiler/rustc_parse/src/parser/mod.rs
@@ -20,7 +20,7 @@ pub use path::PathStyle;
 
 use rustc_ast::ptr::P;
 use rustc_ast::token::{self, Delimiter, Nonterminal, Token, TokenKind};
-use rustc_ast::tokenstream::{AttributesData, DelimSpan, Spacing};
+use rustc_ast::tokenstream::{AttributesData, DelimSpacing, DelimSpan, Spacing};
 use rustc_ast::tokenstream::{TokenStream, TokenTree, TokenTreeCursor};
 use rustc_ast::util::case::Case;
 use rustc_ast::AttrId;
@@ -130,7 +130,7 @@ pub struct Parser<'a> {
     pub sess: &'a ParseSess,
     /// The current token.
     pub token: Token,
-    /// The spacing for the current token
+    /// The spacing for the current token.
     pub token_spacing: Spacing,
     /// The previous token.
     pub prev_token: Token,
@@ -240,7 +240,7 @@ struct TokenCursor {
     // Token streams surrounding the current one. The delimiters for stack[n]'s
     // tokens are in `stack[n-1]`. `stack[0]` (when present) has no delimiters
     // because it's the outermost token stream which never has delimiters.
-    stack: Vec<(TokenTreeCursor, Delimiter, DelimSpan)>,
+    stack: Vec<(TokenTreeCursor, DelimSpan, DelimSpacing, Delimiter)>,
 }
 
 impl TokenCursor {
@@ -264,24 +264,31 @@ impl TokenCursor {
                         ));
                         return (token.clone(), spacing);
                     }
-                    &TokenTree::Delimited(sp, delim, ref tts) => {
+                    &TokenTree::Delimited(sp, spacing, delim, ref tts) => {
                         let trees = tts.clone().into_trees();
-                        self.stack.push((mem::replace(&mut self.tree_cursor, trees), delim, sp));
+                        self.stack.push((
+                            mem::replace(&mut self.tree_cursor, trees),
+                            sp,
+                            spacing,
+                            delim,
+                        ));
                         if delim != Delimiter::Invisible {
-                            return (Token::new(token::OpenDelim(delim), sp.open), Spacing::Alone);
+                            return (Token::new(token::OpenDelim(delim), sp.open), spacing.open);
                         }
                         // No open delimiter to return; continue on to the next iteration.
                     }
                 };
-            } else if let Some((tree_cursor, delim, span)) = self.stack.pop() {
+            } else if let Some((tree_cursor, span, spacing, delim)) = self.stack.pop() {
                 // We have exhausted this token stream. Move back to its parent token stream.
                 self.tree_cursor = tree_cursor;
                 if delim != Delimiter::Invisible {
-                    return (Token::new(token::CloseDelim(delim), span.close), Spacing::Alone);
+                    return (Token::new(token::CloseDelim(delim), span.close), spacing.close);
                 }
                 // No close delimiter to return; continue on to the next iteration.
             } else {
-                // We have exhausted the outermost token stream.
+                // We have exhausted the outermost token stream. The use of
+                // `Spacing::Alone` is arbitrary and immaterial, because the
+                // `Eof` token's spacing is never used.
                 return (Token::new(token::Eof, DUMMY_SP), Spacing::Alone);
             }
         }
@@ -699,8 +706,8 @@ impl<'a> Parser<'a> {
                 // is not needed (we'll capture the entire 'glued' token),
                 // and `bump` will set this field to `None`
                 self.break_last_token = true;
-                // Use the spacing of the glued token as the spacing
-                // of the unglued second token.
+                // Use the spacing of the glued token as the spacing of the
+                // unglued second token.
                 self.bump_with((Token::new(second, second_span), self.token_spacing));
                 true
             }
@@ -1068,7 +1075,7 @@ impl<'a> Parser<'a> {
             return looker(&self.token);
         }
 
-        if let Some(&(_, delim, span)) = self.token_cursor.stack.last()
+        if let Some(&(_, span, _, delim)) = self.token_cursor.stack.last()
             && delim != Delimiter::Invisible
         {
             // We are not in the outermost token stream, and the token stream
@@ -1077,7 +1084,7 @@ impl<'a> Parser<'a> {
             let tree_cursor = &self.token_cursor.tree_cursor;
             let all_normal = (0..dist).all(|i| {
                 let token = tree_cursor.look_ahead(i);
-                !matches!(token, Some(TokenTree::Delimited(_, Delimiter::Invisible, _)))
+                !matches!(token, Some(TokenTree::Delimited(.., Delimiter::Invisible, _)))
             });
             if all_normal {
                 // There were no skipped delimiters. Do lookahead by plain indexing.
@@ -1086,7 +1093,7 @@ impl<'a> Parser<'a> {
                         // Indexing stayed within the current token stream.
                         match tree {
                             TokenTree::Token(token, _) => looker(token),
-                            TokenTree::Delimited(dspan, delim, _) => {
+                            TokenTree::Delimited(dspan, _, delim, _) => {
                                 looker(&Token::new(token::OpenDelim(*delim), dspan.open))
                             }
                         }
@@ -1264,7 +1271,7 @@ impl<'a> Parser<'a> {
             || self.check(&token::OpenDelim(Delimiter::Brace));
 
         delimited.then(|| {
-            let TokenTree::Delimited(dspan, delim, tokens) = self.parse_token_tree() else {
+            let TokenTree::Delimited(dspan, _, delim, tokens) = self.parse_token_tree() else {
                 unreachable!()
             };
             DelimArgs { dspan, delim, tokens }
@@ -1288,7 +1295,7 @@ impl<'a> Parser<'a> {
             token::OpenDelim(..) => {
                 // Grab the tokens within the delimiters.
                 let stream = self.token_cursor.tree_cursor.stream.clone();
-                let (_, delim, span) = *self.token_cursor.stack.last().unwrap();
+                let (_, span, spacing, delim) = *self.token_cursor.stack.last().unwrap();
 
                 // Advance the token cursor through the entire delimited
                 // sequence. After getting the `OpenDelim` we are *within* the
@@ -1308,12 +1315,13 @@ impl<'a> Parser<'a> {
 
                 // Consume close delimiter
                 self.bump();
-                TokenTree::Delimited(span, delim, stream)
+                TokenTree::Delimited(span, spacing, delim, stream)
             }
             token::CloseDelim(_) | token::Eof => unreachable!(),
             _ => {
+                let prev_spacing = self.token_spacing;
                 self.bump();
-                TokenTree::Token(self.prev_token.clone(), Spacing::Alone)
+                TokenTree::Token(self.prev_token.clone(), prev_spacing)
             }
         }
     }
diff --git a/compiler/rustc_session/src/config.rs b/compiler/rustc_session/src/config.rs
index ef465f371d2..8dc9a29c2ad 100644
--- a/compiler/rustc_session/src/config.rs
+++ b/compiler/rustc_session/src/config.rs
@@ -8,7 +8,7 @@ use crate::search_paths::SearchPath;
 use crate::utils::{CanonicalizedPath, NativeLib, NativeLibKind};
 use crate::{lint, HashStableContext};
 use crate::{EarlyErrorHandler, Session};
-use rustc_data_structures::fx::{FxHashMap, FxHashSet, FxIndexSet};
+use rustc_data_structures::fx::{FxHashMap, FxHashSet, FxIndexMap, FxIndexSet};
 use rustc_data_structures::stable_hasher::{StableOrd, ToStableHashKey};
 use rustc_errors::emitter::HumanReadableErrorType;
 use rustc_errors::{ColorConfig, DiagnosticArgValue, HandlerFlags, IntoDiagnosticArg};
@@ -1114,6 +1114,7 @@ impl Default for Options {
             pretty: None,
             working_dir: RealFileName::LocalPath(std::env::current_dir().unwrap()),
             color: ColorConfig::Auto,
+            logical_env: FxIndexMap::default(),
         }
     }
 }
@@ -1246,46 +1247,85 @@ pub const fn default_lib_output() -> CrateType {
 }
 
 fn default_configuration(sess: &Session) -> Cfg {
-    // NOTE: This should be kept in sync with `CheckCfg::fill_well_known` below.
-    let end = &sess.target.endian;
-    let arch = &sess.target.arch;
-    let wordsz = sess.target.pointer_width as u64;
-    let os = &sess.target.os;
-    let env = &sess.target.env;
-    let abi = &sess.target.abi;
-    let relocation_model = sess.target.relocation_model.desc_symbol();
-    let vendor = &sess.target.vendor;
-    let min_atomic_width = sess.target.min_atomic_width();
-    let max_atomic_width = sess.target.max_atomic_width();
-    let atomic_cas = sess.target.atomic_cas;
-    let layout = sess.target.parse_data_layout().unwrap_or_else(|err| {
-        sess.emit_fatal(err);
-    });
-
     let mut ret = Cfg::default();
-    ret.reserve(7); // the minimum number of insertions
-    // Target bindings.
-    ret.insert((sym::target_os, Some(Symbol::intern(os))));
-    for fam in sess.target.families.as_ref() {
-        ret.insert((sym::target_family, Some(Symbol::intern(fam))));
-        if fam == "windows" {
-            ret.insert((sym::windows, None));
-        } else if fam == "unix" {
-            ret.insert((sym::unix, None));
-        }
-    }
-    ret.insert((sym::target_arch, Some(Symbol::intern(arch))));
-    ret.insert((sym::target_endian, Some(Symbol::intern(end.as_str()))));
-    ret.insert((sym::target_pointer_width, Some(sym::integer(wordsz))));
-    ret.insert((sym::target_env, Some(Symbol::intern(env))));
-    ret.insert((sym::target_abi, Some(Symbol::intern(abi))));
+
+    macro_rules! ins_none {
+        ($key:expr) => {
+            ret.insert(($key, None));
+        };
+    }
+    macro_rules! ins_str {
+        ($key:expr, $val_str:expr) => {
+            ret.insert(($key, Some(Symbol::intern($val_str))));
+        };
+    }
+    macro_rules! ins_sym {
+        ($key:expr, $val_sym:expr) => {
+            ret.insert(($key, Some($val_sym)));
+        };
+    }
+
+    // Symbols are inserted in alphabetical order as much as possible.
+    // The exceptions are where control flow forces things out of order.
+    //
+    // Run `rustc --print cfg` to see the configuration in practice.
+    //
+    // NOTE: These insertions should be kept in sync with
+    // `CheckCfg::fill_well_known` below.
+
+    if sess.opts.debug_assertions {
+        ins_none!(sym::debug_assertions);
+    }
+
+    if sess.overflow_checks() {
+        ins_none!(sym::overflow_checks);
+    }
+
+    ins_sym!(sym::panic, sess.panic_strategy().desc_symbol());
+
+    // JUSTIFICATION: before wrapper fn is available
+    #[allow(rustc::bad_opt_access)]
+    if sess.opts.crate_types.contains(&CrateType::ProcMacro) {
+        ins_none!(sym::proc_macro);
+    }
+
     if sess.is_nightly_build() {
-        ret.insert((sym::relocation_model, Some(relocation_model)));
+        ins_sym!(sym::relocation_model, sess.target.relocation_model.desc_symbol());
     }
-    ret.insert((sym::target_vendor, Some(Symbol::intern(vendor))));
-    if sess.opts.unstable_opts.has_thread_local.unwrap_or(sess.target.has_thread_local) {
-        ret.insert((sym::target_thread_local, None));
+
+    for mut s in sess.opts.unstable_opts.sanitizer {
+        // KASAN is still ASAN under the hood, so it uses the same attribute.
+        if s == SanitizerSet::KERNELADDRESS {
+            s = SanitizerSet::ADDRESS;
+        }
+        ins_str!(sym::sanitize, &s.to_string());
+    }
+
+    if sess.is_sanitizer_cfi_generalize_pointers_enabled() {
+        ins_none!(sym::sanitizer_cfi_generalize_pointers);
+    }
+    if sess.is_sanitizer_cfi_normalize_integers_enabled() {
+        ins_none!(sym::sanitizer_cfi_normalize_integers);
+    }
+
+    ins_str!(sym::target_abi, &sess.target.abi);
+    ins_str!(sym::target_arch, &sess.target.arch);
+    ins_str!(sym::target_endian, sess.target.endian.as_str());
+    ins_str!(sym::target_env, &sess.target.env);
+
+    for family in sess.target.families.as_ref() {
+        ins_str!(sym::target_family, family);
+        if family == "windows" {
+            ins_none!(sym::windows);
+        } else if family == "unix" {
+            ins_none!(sym::unix);
+        }
     }
+
+    // `target_has_atomic*`
+    let layout = sess.target.parse_data_layout().unwrap_or_else(|err| {
+        sess.emit_fatal(err);
+    });
     let mut has_atomic = false;
     for (i, align) in [
         (8, layout.i8_align.abi),
@@ -1294,63 +1334,46 @@ fn default_configuration(sess: &Session) -> Cfg {
         (64, layout.i64_align.abi),
         (128, layout.i128_align.abi),
     ] {
-        if i >= min_atomic_width && i <= max_atomic_width {
-            has_atomic = true;
+        if i >= sess.target.min_atomic_width() && i <= sess.target.max_atomic_width() {
+            if !has_atomic {
+                has_atomic = true;
+                if sess.is_nightly_build() {
+                    if sess.target.atomic_cas {
+                        ins_none!(sym::target_has_atomic);
+                    }
+                    ins_none!(sym::target_has_atomic_load_store);
+                }
+            }
             let mut insert_atomic = |sym, align: Align| {
-                ret.insert((sym::target_has_atomic_load_store, Some(sym)));
-                if atomic_cas {
-                    ret.insert((sym::target_has_atomic, Some(sym)));
+                if sess.target.atomic_cas {
+                    ins_sym!(sym::target_has_atomic, sym);
                 }
                 if align.bits() == i {
-                    ret.insert((sym::target_has_atomic_equal_alignment, Some(sym)));
+                    ins_sym!(sym::target_has_atomic_equal_alignment, sym);
                 }
+                ins_sym!(sym::target_has_atomic_load_store, sym);
             };
             insert_atomic(sym::integer(i), align);
-            if wordsz == i {
+            if sess.target.pointer_width as u64 == i {
                 insert_atomic(sym::ptr, layout.pointer_align.abi);
             }
         }
     }
-    if sess.is_nightly_build() && has_atomic {
-        ret.insert((sym::target_has_atomic_load_store, None));
-        if atomic_cas {
-            ret.insert((sym::target_has_atomic, None));
-        }
-    }
-
-    let panic_strategy = sess.panic_strategy();
-    ret.insert((sym::panic, Some(panic_strategy.desc_symbol())));
 
-    for mut s in sess.opts.unstable_opts.sanitizer {
-        // KASAN should use the same attribute name as ASAN, as it's still ASAN
-        // under the hood
-        if s == SanitizerSet::KERNELADDRESS {
-            s = SanitizerSet::ADDRESS;
-        }
+    ins_str!(sym::target_os, &sess.target.os);
+    ins_sym!(sym::target_pointer_width, sym::integer(sess.target.pointer_width));
 
-        let symbol = Symbol::intern(&s.to_string());
-        ret.insert((sym::sanitize, Some(symbol)));
+    if sess.opts.unstable_opts.has_thread_local.unwrap_or(sess.target.has_thread_local) {
+        ins_none!(sym::target_thread_local);
     }
 
-    if sess.is_sanitizer_cfi_generalize_pointers_enabled() {
-        ret.insert((sym::sanitizer_cfi_generalize_pointers, None));
-    }
+    ins_str!(sym::target_vendor, &sess.target.vendor);
 
-    if sess.is_sanitizer_cfi_normalize_integers_enabled() {
-        ret.insert((sym::sanitizer_cfi_normalize_integers, None));
+    // If the user wants a test runner, then add the test cfg.
+    if sess.is_test_crate() {
+        ins_none!(sym::test);
     }
 
-    if sess.opts.debug_assertions {
-        ret.insert((sym::debug_assertions, None));
-    }
-    if sess.overflow_checks() {
-        ret.insert((sym::overflow_checks, None));
-    }
-    // JUSTIFICATION: before wrapper fn is available
-    #[allow(rustc::bad_opt_access)]
-    if sess.opts.crate_types.contains(&CrateType::ProcMacro) {
-        ret.insert((sym::proc_macro, None));
-    }
     ret
 }
 
@@ -1421,90 +1444,71 @@ impl CheckCfg {
             ExpectedValues::Some(values)
         };
 
-        // NOTE: This should be kept in sync with `default_configuration`
+        macro_rules! ins {
+            ($name:expr, $values:expr) => {
+                self.expecteds.entry($name).or_insert_with($values)
+            };
+        }
+
+        // Symbols are inserted in alphabetical order as much as possible.
+        // The exceptions are where control flow forces things out of order.
+        //
+        // NOTE: This should be kept in sync with `default_configuration`.
+        // Note that symbols inserted conditionally in `default_configuration`
+        // are inserted unconditionally here.
         //
         // When adding a new config here you should also update
         // `tests/ui/check-cfg/well-known-values.rs`.
 
-        let panic_values = &PanicStrategy::all();
+        ins!(sym::debug_assertions, no_values);
 
-        let atomic_values = &[
-            sym::ptr,
-            sym::integer(8usize),
-            sym::integer(16usize),
-            sym::integer(32usize),
-            sym::integer(64usize),
-            sym::integer(128usize),
-        ];
+        // These three are never set by rustc, but we set them anyway: they
+        // should not trigger a lint because `cargo doc`, `cargo test`, and
+        // `cargo miri run` (respectively) can set them.
+        ins!(sym::doc, no_values);
+        ins!(sym::doctest, no_values);
+        ins!(sym::miri, no_values);
+
+        ins!(sym::overflow_checks, no_values);
+
+        ins!(sym::panic, empty_values).extend(&PanicStrategy::all());
+
+        ins!(sym::proc_macro, no_values);
+
+        ins!(sym::relocation_model, empty_values).extend(RelocModel::all());
 
         let sanitize_values = SanitizerSet::all()
             .into_iter()
             .map(|sanitizer| Symbol::intern(sanitizer.as_str().unwrap()));
+        ins!(sym::sanitize, empty_values).extend(sanitize_values);
 
-        let relocation_model_values = RelocModel::all();
-
-        // Unknown possible values:
-        //  - `target_feature`
-        for name in [sym::target_feature] {
-            self.expecteds.entry(name).or_insert(ExpectedValues::Any);
-        }
-
-        // No-values
-        for name in [
-            sym::doc,
-            sym::miri,
-            sym::unix,
-            sym::test,
-            sym::doctest,
-            sym::windows,
-            sym::proc_macro,
-            sym::debug_assertions,
-            sym::overflow_checks,
-            sym::target_thread_local,
-        ] {
-            self.expecteds.entry(name).or_insert_with(no_values);
-        }
-
-        // Pre-defined values
-        self.expecteds.entry(sym::panic).or_insert_with(empty_values).extend(panic_values);
-        self.expecteds.entry(sym::sanitize).or_insert_with(empty_values).extend(sanitize_values);
-        self.expecteds
-            .entry(sym::target_has_atomic)
-            .or_insert_with(no_values)
-            .extend(atomic_values);
-        self.expecteds
-            .entry(sym::target_has_atomic_load_store)
-            .or_insert_with(no_values)
-            .extend(atomic_values);
-        self.expecteds
-            .entry(sym::target_has_atomic_equal_alignment)
-            .or_insert_with(no_values)
-            .extend(atomic_values);
-        self.expecteds
-            .entry(sym::relocation_model)
-            .or_insert_with(empty_values)
-            .extend(relocation_model_values);
-
-        // Target specific values
+        ins!(sym::sanitizer_cfi_generalize_pointers, no_values);
+        ins!(sym::sanitizer_cfi_normalize_integers, no_values);
+
+        // rustc_codegen_ssa has a list of known target features and their
+        // stability, but we should allow any target feature as a new target or
+        // rustc version may introduce new target features.
+        ins!(sym::target_feature, || ExpectedValues::Any);
+
+        // sym::target_*
         {
             const VALUES: [&Symbol; 8] = [
-                &sym::target_os,
-                &sym::target_family,
+                &sym::target_abi,
                 &sym::target_arch,
                 &sym::target_endian,
                 &sym::target_env,
-                &sym::target_abi,
-                &sym::target_vendor,
+                &sym::target_family,
+                &sym::target_os,
                 &sym::target_pointer_width,
+                &sym::target_vendor,
             ];
 
             // Initialize (if not already initialized)
             for &e in VALUES {
-                let entry = self.expecteds.entry(e);
                 if !self.exhaustive_values {
-                    entry.or_insert(ExpectedValues::Any);
+                    ins!(e, || ExpectedValues::Any);
                 } else {
-                    entry.or_insert_with(empty_values);
+                    ins!(e, empty_values);
                 }
             }
 
@@ -1512,14 +1516,14 @@ impl CheckCfg {
                 // Get all values map at once otherwise it would be costly.
                 // (8 values * 220 targets ~= 1760 times, at the time of writing this comment).
                 let [
-                    values_target_os,
-                    values_target_family,
+                    values_target_abi,
                     values_target_arch,
                     values_target_endian,
                     values_target_env,
-                    values_target_abi,
-                    values_target_vendor,
+                    values_target_family,
+                    values_target_os,
                     values_target_pointer_width,
+                    values_target_vendor,
                 ] = self
                     .expecteds
                     .get_many_mut(VALUES)
@@ -1530,31 +1534,49 @@ impl CheckCfg {
                     .map(|target| Target::expect_builtin(&TargetTriple::from_triple(target)))
                     .chain(iter::once(current_target.clone()))
                 {
-                    values_target_os.insert(Symbol::intern(&target.options.os));
-                    values_target_family.extend(
-                        target.options.families.iter().map(|family| Symbol::intern(family)),
-                    );
+                    values_target_abi.insert(Symbol::intern(&target.options.abi));
                     values_target_arch.insert(Symbol::intern(&target.arch));
                     values_target_endian.insert(Symbol::intern(target.options.endian.as_str()));
                     values_target_env.insert(Symbol::intern(&target.options.env));
-                    values_target_abi.insert(Symbol::intern(&target.options.abi));
-                    values_target_vendor.insert(Symbol::intern(&target.options.vendor));
+                    values_target_family.extend(
+                        target.options.families.iter().map(|family| Symbol::intern(family)),
+                    );
+                    values_target_os.insert(Symbol::intern(&target.options.os));
                     values_target_pointer_width.insert(sym::integer(target.pointer_width));
+                    values_target_vendor.insert(Symbol::intern(&target.options.vendor));
                 }
             }
         }
+
+        let atomic_values = &[
+            sym::ptr,
+            sym::integer(8usize),
+            sym::integer(16usize),
+            sym::integer(32usize),
+            sym::integer(64usize),
+            sym::integer(128usize),
+        ];
+        for sym in [
+            sym::target_has_atomic,
+            sym::target_has_atomic_equal_alignment,
+            sym::target_has_atomic_load_store,
+        ] {
+            ins!(sym, no_values).extend(atomic_values);
+        }
+
+        ins!(sym::target_thread_local, no_values);
+
+        ins!(sym::test, no_values);
+
+        ins!(sym::unix, no_values);
+        ins!(sym::windows, no_values);
     }
 }
 
 pub fn build_configuration(sess: &Session, mut user_cfg: Cfg) -> Cfg {
     // Combine the configuration requested by the session (command line) with
     // some default and generated configuration items.
-    let default_cfg = default_configuration(sess);
-    // If the user wants a test runner, then add the test cfg.
-    if sess.is_test_crate() {
-        user_cfg.insert((sym::test, None));
-    }
-    user_cfg.extend(default_cfg.iter().cloned());
+    user_cfg.extend(default_configuration(sess).into_iter());
     user_cfg
 }
 
@@ -1813,6 +1835,7 @@ pub fn rustc_optgroups() -> Vec<RustcOptGroup> {
             "Remap source names in all output (compiler messages and output files)",
             "FROM=TO",
         ),
+        opt::multi("", "env", "Inject an environment variable", "VAR=VALUE"),
     ]);
     opts
 }
@@ -2592,6 +2615,23 @@ fn parse_remap_path_prefix(
     mapping
 }
 
+fn parse_logical_env(
+    handler: &mut EarlyErrorHandler,
+    matches: &getopts::Matches,
+) -> FxIndexMap<String, String> {
+    let mut vars = FxIndexMap::default();
+
+    for arg in matches.opt_strs("env") {
+        if let Some((name, val)) = arg.split_once('=') {
+            vars.insert(name.to_string(), val.to_string());
+        } else {
+            handler.early_error(format!("`--env`: specify value for variable `{arg}`"));
+        }
+    }
+
+    vars
+}
+
 // JUSTIFICATION: before wrapper fn is available
 #[allow(rustc::bad_opt_access)]
 pub fn build_session_options(
@@ -2830,6 +2870,8 @@ pub fn build_session_options(
         handler.early_error("can't dump dependency graph without `-Z query-dep-graph`");
     }
 
+    let logical_env = parse_logical_env(handler, matches);
+
     // Try to find a directory containing the Rust `src`, for more details see
     // the doc comment on the `real_rust_source_base_dir` field.
     let tmp_buf;
@@ -2910,6 +2952,7 @@ pub fn build_session_options(
         pretty,
         working_dir,
         color,
+        logical_env,
     }
 }
 
@@ -3184,6 +3227,7 @@ pub(crate) mod dep_tracking {
     };
     use crate::lint;
     use crate::utils::NativeLib;
+    use rustc_data_structures::fx::FxIndexMap;
     use rustc_data_structures::stable_hasher::Hash64;
     use rustc_errors::LanguageIdentifier;
     use rustc_feature::UnstableFeatures;
@@ -3342,6 +3386,21 @@ pub(crate) mod dep_tracking {
         }
     }
 
+    impl<T: DepTrackingHash, V: DepTrackingHash> DepTrackingHash for FxIndexMap<T, V> {
+        fn hash(
+            &self,
+            hasher: &mut DefaultHasher,
+            error_format: ErrorOutputType,
+            for_crate_hash: bool,
+        ) {
+            Hash::hash(&self.len(), hasher);
+            for (key, value) in self.iter() {
+                DepTrackingHash::hash(key, hasher, error_format, for_crate_hash);
+                DepTrackingHash::hash(value, hasher, error_format, for_crate_hash);
+            }
+        }
+    }
+
     impl DepTrackingHash for OutputTypes {
         fn hash(
             &self,
diff --git a/compiler/rustc_session/src/options.rs b/compiler/rustc_session/src/options.rs
index b1cf43f471a..d666c5d4d70 100644
--- a/compiler/rustc_session/src/options.rs
+++ b/compiler/rustc_session/src/options.rs
@@ -3,6 +3,7 @@ use crate::config::*;
 use crate::search_paths::SearchPath;
 use crate::utils::NativeLib;
 use crate::{lint, EarlyErrorHandler};
+use rustc_data_structures::fx::FxIndexMap;
 use rustc_data_structures::profiling::TimePassesFormat;
 use rustc_data_structures::stable_hasher::Hash64;
 use rustc_errors::ColorConfig;
@@ -150,6 +151,9 @@ top_level_options!(
 
         target_triple: TargetTriple [TRACKED],
 
+        /// Effective logical environment used by `env!`/`option_env!` macros
+        logical_env: FxIndexMap<String, String> [TRACKED],
+
         test: bool [TRACKED],
         error_format: ErrorOutputType [UNTRACKED],
         diagnostic_width: Option<usize> [UNTRACKED],
diff --git a/compiler/rustc_span/src/edition.rs b/compiler/rustc_span/src/edition.rs
index 608b8c24bde..78ac61fa31d 100644
--- a/compiler/rustc_span/src/edition.rs
+++ b/compiler/rustc_span/src/edition.rs
@@ -1,4 +1,3 @@
-use crate::symbol::{sym, Symbol};
 use std::fmt;
 use std::str::FromStr;
 
@@ -58,15 +57,6 @@ impl Edition {
         }
     }
 
-    pub fn feature_name(self) -> Symbol {
-        match self {
-            Edition::Edition2015 => sym::rust_2015_preview,
-            Edition::Edition2018 => sym::rust_2018_preview,
-            Edition::Edition2021 => sym::rust_2021_preview,
-            Edition::Edition2024 => sym::rust_2024_preview,
-        }
-    }
-
     pub fn is_stable(self) -> bool {
         match self {
             Edition::Edition2015 => true,
diff --git a/compiler/rustc_span/src/symbol.rs b/compiler/rustc_span/src/symbol.rs
index 9ad76b74c38..f3c5138716d 100644
--- a/compiler/rustc_span/src/symbol.rs
+++ b/compiler/rustc_span/src/symbol.rs
@@ -1350,13 +1350,10 @@ symbols! {
         rtm_target_feature,
         rust,
         rust_2015,
-        rust_2015_preview,
         rust_2018,
         rust_2018_preview,
         rust_2021,
-        rust_2021_preview,
         rust_2024,
-        rust_2024_preview,
         rust_begin_unwind,
         rust_cold_cc,
         rust_eh_catch_typeinfo,
diff --git a/compiler/rustc_ty_utils/src/layout.rs b/compiler/rustc_ty_utils/src/layout.rs
index f30c40de698..d896873fadd 100644
--- a/compiler/rustc_ty_utils/src/layout.rs
+++ b/compiler/rustc_ty_utils/src/layout.rs
@@ -433,7 +433,21 @@ fn layout_of_uncached<'tcx>(
                 .size
                 .checked_mul(e_len, dl)
                 .ok_or_else(|| error(cx, LayoutError::SizeOverflow(ty)))?;
-            let align = dl.vector_align(size);
+
+            let (abi, align) = if def.repr().packed() && !e_len.is_power_of_two() {
+                // Non-power-of-two vectors have padding up to the next power-of-two.
+                // If we're a packed repr, remove the padding while keeping the alignment as close
+                // to a vector as possible.
+                (
+                    Abi::Aggregate { sized: true },
+                    AbiAndPrefAlign {
+                        abi: Align::max_for_offset(size),
+                        pref: dl.vector_align(size).pref,
+                    },
+                )
+            } else {
+                (Abi::Vector { element: e_abi, count: e_len }, dl.vector_align(size))
+            };
             let size = size.align_to(align.abi);
 
             // Compute the placement of the vector fields:
@@ -446,7 +460,7 @@ fn layout_of_uncached<'tcx>(
             tcx.mk_layout(LayoutS {
                 variants: Variants::Single { index: FIRST_VARIANT },
                 fields,
-                abi: Abi::Vector { element: e_abi, count: e_len },
+                abi,
                 largest_niche: e_ly.largest_niche,
                 size,
                 align,
diff --git a/config.example.toml b/config.example.toml
index b103e9890d2..14e0b9d521f 100644
--- a/config.example.toml
+++ b/config.example.toml
@@ -30,7 +30,7 @@
 #
 # If `change-id` does not match the version that is currently running,
 # `x.py` will prompt you to update it and check the related PR for more details.
-change-id = 117813
+change-id = 118703
 
 # =============================================================================
 # Tweaking how LLVM is compiled
diff --git a/library/core/src/primitive_docs.rs b/library/core/src/primitive_docs.rs
index e5d7e964381..588f9b865b0 100644
--- a/library/core/src/primitive_docs.rs
+++ b/library/core/src/primitive_docs.rs
@@ -330,7 +330,7 @@ mod prim_never {}
 /// the future ("reserved"); some will never be a character ("noncharacters"); and some may be given
 /// different meanings by different users ("private use").
 ///
-/// `char` is guaranteed to have the same size and alignment as `u32` on all
+/// `char` is guaranteed to have the same size, alignment, and function call ABI as `u32` on all
 /// platforms.
 /// ```
 /// use std::alloc::Layout;
@@ -1557,6 +1557,7 @@ mod prim_ref {}
 ///   Pointee>::Metadata`).
 /// - `usize` is ABI-compatible with the `uN` integer type of the same size, and likewise `isize` is
 ///   ABI-compatible with the `iN` integer type of the same size.
+/// - `char` is ABI-compatible with `u32`.
 /// - Any two `fn` (function pointer) types are ABI-compatible with each other if they have the same
 ///   ABI string or the ABI string only differs in a trailing `-unwind`, independent of the rest of
 ///   their signature. (This means you can pass `fn()` to a function expecting `fn(i32)`, and the
@@ -1585,9 +1586,9 @@ mod prim_ref {}
 /// since it is not portable and not a stable guarantee.
 ///
 /// Noteworthy cases of types *not* being ABI-compatible in general are:
-/// * `bool` vs `u8`, and `i32` vs `u32`: on some targets, the calling conventions for these types
-///   differ in terms of what they guarantee for the remaining bits in the register that are not
-///   used by the value.
+/// * `bool` vs `u8`, `i32` vs `u32`, `char` vs `i32`: on some targets, the calling conventions for
+///   these types differ in terms of what they guarantee for the remaining bits in the register that
+///   are not used by the value.
 /// * `i32` vs `f32` are not compatible either, as has already been mentioned above.
 /// * `struct Foo(u32)` and `u32` are not compatible (without `repr(transparent)`) since structs are
 ///   aggregate types and often passed in a different way than primitives like `i32`.
diff --git a/library/proc_macro/src/lib.rs b/library/proc_macro/src/lib.rs
index d3f1fba9369..7ebb6810b3e 100644
--- a/library/proc_macro/src/lib.rs
+++ b/library/proc_macro/src/lib.rs
@@ -925,13 +925,12 @@ impl !Sync for Punct {}
 pub enum Spacing {
     /// A `Punct` token can join with the following token to form a multi-character operator.
     ///
-    /// In token streams constructed using proc macro interfaces `Joint` punctuation tokens can be
-    /// followed by any other tokens. \
-    /// However, in token streams parsed from source code compiler will only set spacing to `Joint`
-    /// in the following cases:
-    /// - A `Punct` is immediately followed by another `Punct` without a whitespace. \
-    ///   E.g. `+` is `Joint` in `+=` and `++`.
-    /// - A single quote `'` is immediately followed by an identifier without a whitespace. \
+    /// In token streams constructed using proc macro interfaces, `Joint` punctuation tokens can be
+    /// followed by any other tokens. However, in token streams parsed from source code, the
+    /// compiler will only set spacing to `Joint` in the following cases.
+    /// - When a `Punct` is immediately followed by another `Punct` without a whitespace. E.g. `+`
+    ///   is `Joint` in `+=` and `++`.
+    /// - When a single quote `'` is immediately followed by an identifier without a whitespace.
     ///   E.g. `'` is `Joint` in `'lifetime`.
     ///
     /// This list may be extended in the future to enable more token combinations.
@@ -939,11 +938,10 @@ pub enum Spacing {
     Joint,
     /// A `Punct` token cannot join with the following token to form a multi-character operator.
     ///
-    /// `Alone` punctuation tokens can be followed by any other tokens. \
-    /// In token streams parsed from source code compiler will set spacing to `Alone` in all cases
-    /// not covered by the conditions for `Joint` above. \
-    /// E.g. `+` is `Alone` in `+ =`, `+ident` and `+()`.
-    /// In particular, token not followed by anything  will also be marked as `Alone`.
+    /// `Alone` punctuation tokens can be followed by any other tokens. In token streams parsed
+    /// from source code, the compiler will set spacing to `Alone` in all cases not covered by the
+    /// conditions for `Joint` above. E.g. `+` is `Alone` in `+ =`, `+ident` and `+()`. In
+    /// particular, tokens not followed by anything will be marked as `Alone`.
     #[stable(feature = "proc_macro_lib2", since = "1.29.0")]
     Alone,
 }
@@ -978,8 +976,8 @@ impl Punct {
     }
 
     /// Returns the spacing of this punctuation character, indicating whether it can be potentially
-    /// combined into a multi-character operator with the following token (`Joint`), or the operator
-    /// has certainly ended (`Alone`).
+    /// combined into a multi-character operator with the following token (`Joint`), or whether the
+    /// operator has definitely ended (`Alone`).
     #[stable(feature = "proc_macro_lib2", since = "1.29.0")]
     pub fn spacing(&self) -> Spacing {
         if self.0.joint { Spacing::Joint } else { Spacing::Alone }
diff --git a/src/bootstrap/src/core/config/config.rs b/src/bootstrap/src/core/config/config.rs
index 3eaeb73eecb..5a9e78f19d6 100644
--- a/src/bootstrap/src/core/config/config.rs
+++ b/src/bootstrap/src/core/config/config.rs
@@ -894,7 +894,6 @@ define_config! {
 define_config! {
     struct Dist {
         sign_folder: Option<String> = "sign-folder",
-        gpg_password_file: Option<String> = "gpg-password-file",
         upload_addr: Option<String> = "upload-addr",
         src_tarball: Option<bool> = "src-tarball",
         missing_tools: Option<bool> = "missing-tools",
@@ -1070,7 +1069,6 @@ define_config! {
         debuginfo_level_tools: Option<DebuginfoLevel> = "debuginfo-level-tools",
         debuginfo_level_tests: Option<DebuginfoLevel> = "debuginfo-level-tests",
         split_debuginfo: Option<String> = "split-debuginfo",
-        run_dsymutil: Option<bool> = "run-dsymutil",
         backtrace: Option<bool> = "backtrace",
         incremental: Option<bool> = "incremental",
         parallel_compiler: Option<bool> = "parallel-compiler",
@@ -1349,12 +1347,56 @@ impl Config {
         config.changelog_seen = toml.changelog_seen;
         config.change_id = toml.change_id;
 
-        let build = toml.build.unwrap_or_default();
-        if let Some(file_build) = build.build {
+        let Build {
+            build,
+            host,
+            target,
+            build_dir,
+            cargo,
+            rustc,
+            rustfmt,
+            docs,
+            compiler_docs,
+            library_docs_private_items,
+            docs_minification,
+            submodules,
+            gdb,
+            nodejs,
+            npm,
+            python,
+            reuse,
+            locked_deps,
+            vendor,
+            full_bootstrap,
+            extended,
+            tools,
+            verbose,
+            sanitizers,
+            profiler,
+            cargo_native_static,
+            low_priority,
+            configure_args,
+            local_rebuild,
+            print_step_timings,
+            print_step_rusage,
+            check_stage,
+            doc_stage,
+            build_stage,
+            test_stage,
+            install_stage,
+            dist_stage,
+            bench_stage,
+            patch_binaries_for_nix,
+            // This field is only used by bootstrap.py
+            metrics: _,
+            android_ndk,
+        } = toml.build.unwrap_or_default();
+
+        if let Some(file_build) = build {
             config.build = TargetSelection::from_user(&file_build);
         };
 
-        set(&mut config.out, flags.build_dir.or_else(|| build.build_dir.map(PathBuf::from)));
+        set(&mut config.out, flags.build_dir.or_else(|| build_dir.map(PathBuf::from)));
         // NOTE: Bootstrap spawns various commands with different working directories.
         // To avoid writing to random places on the file system, `config.out` needs to be an absolute path.
         if !config.out.is_absolute() {
@@ -1362,7 +1404,7 @@ impl Config {
             config.out = crate::utils::helpers::absolute(&config.out);
         }
 
-        config.initial_rustc = if let Some(rustc) = build.rustc {
+        config.initial_rustc = if let Some(rustc) = rustc {
             if !flags.skip_stage0_validation {
                 config.check_build_rustc_version(&rustc);
             }
@@ -1372,8 +1414,7 @@ impl Config {
             config.out.join(config.build.triple).join("stage0/bin/rustc")
         };
 
-        config.initial_cargo = build
-            .cargo
+        config.initial_cargo = cargo
             .map(|cargo| {
                 t!(PathBuf::from(cargo).canonicalize(), "`initial_cargo` not found on disk")
             })
@@ -1388,14 +1429,14 @@ impl Config {
 
         config.hosts = if let Some(TargetSelectionList(arg_host)) = flags.host {
             arg_host
-        } else if let Some(file_host) = build.host {
+        } else if let Some(file_host) = host {
             file_host.iter().map(|h| TargetSelection::from_user(h)).collect()
         } else {
             vec![config.build]
         };
         config.targets = if let Some(TargetSelectionList(arg_target)) = flags.target {
             arg_target
-        } else if let Some(file_target) = build.target {
+        } else if let Some(file_target) = target {
             file_target.iter().map(|h| TargetSelection::from_user(h)).collect()
         } else {
             // If target is *not* configured, then default to the host
@@ -1403,43 +1444,44 @@ impl Config {
             config.hosts.clone()
         };
 
-        config.nodejs = build.nodejs.map(PathBuf::from);
-        config.npm = build.npm.map(PathBuf::from);
-        config.gdb = build.gdb.map(PathBuf::from);
-        config.python = build.python.map(PathBuf::from);
-        config.reuse = build.reuse.map(PathBuf::from);
-        config.submodules = build.submodules;
-        config.android_ndk = build.android_ndk;
-        set(&mut config.low_priority, build.low_priority);
-        set(&mut config.compiler_docs, build.compiler_docs);
-        set(&mut config.library_docs_private_items, build.library_docs_private_items);
-        set(&mut config.docs_minification, build.docs_minification);
-        set(&mut config.docs, build.docs);
-        set(&mut config.locked_deps, build.locked_deps);
-        set(&mut config.vendor, build.vendor);
-        set(&mut config.full_bootstrap, build.full_bootstrap);
-        set(&mut config.extended, build.extended);
-        config.tools = build.tools;
-        set(&mut config.verbose, build.verbose);
-        set(&mut config.sanitizers, build.sanitizers);
-        set(&mut config.profiler, build.profiler);
-        set(&mut config.cargo_native_static, build.cargo_native_static);
-        set(&mut config.configure_args, build.configure_args);
-        set(&mut config.local_rebuild, build.local_rebuild);
-        set(&mut config.print_step_timings, build.print_step_timings);
-        set(&mut config.print_step_rusage, build.print_step_rusage);
-        config.patch_binaries_for_nix = build.patch_binaries_for_nix;
+        config.nodejs = nodejs.map(PathBuf::from);
+        config.npm = npm.map(PathBuf::from);
+        config.gdb = gdb.map(PathBuf::from);
+        config.python = python.map(PathBuf::from);
+        config.reuse = reuse.map(PathBuf::from);
+        config.submodules = submodules;
+        config.android_ndk = android_ndk;
+        set(&mut config.low_priority, low_priority);
+        set(&mut config.compiler_docs, compiler_docs);
+        set(&mut config.library_docs_private_items, library_docs_private_items);
+        set(&mut config.docs_minification, docs_minification);
+        set(&mut config.docs, docs);
+        set(&mut config.locked_deps, locked_deps);
+        set(&mut config.vendor, vendor);
+        set(&mut config.full_bootstrap, full_bootstrap);
+        set(&mut config.extended, extended);
+        config.tools = tools;
+        set(&mut config.verbose, verbose);
+        set(&mut config.sanitizers, sanitizers);
+        set(&mut config.profiler, profiler);
+        set(&mut config.cargo_native_static, cargo_native_static);
+        set(&mut config.configure_args, configure_args);
+        set(&mut config.local_rebuild, local_rebuild);
+        set(&mut config.print_step_timings, print_step_timings);
+        set(&mut config.print_step_rusage, print_step_rusage);
+        config.patch_binaries_for_nix = patch_binaries_for_nix;
 
         config.verbose = cmp::max(config.verbose, flags.verbose as usize);
 
         if let Some(install) = toml.install {
-            config.prefix = install.prefix.map(PathBuf::from);
-            config.sysconfdir = install.sysconfdir.map(PathBuf::from);
-            config.datadir = install.datadir.map(PathBuf::from);
-            config.docdir = install.docdir.map(PathBuf::from);
-            set(&mut config.bindir, install.bindir.map(PathBuf::from));
-            config.libdir = install.libdir.map(PathBuf::from);
-            config.mandir = install.mandir.map(PathBuf::from);
+            let Install { prefix, sysconfdir, docdir, bindir, libdir, mandir, datadir } = install;
+            config.prefix = prefix.map(PathBuf::from);
+            config.sysconfdir = sysconfdir.map(PathBuf::from);
+            config.datadir = datadir.map(PathBuf::from);
+            config.docdir = docdir.map(PathBuf::from);
+            set(&mut config.bindir, bindir.map(PathBuf::from));
+            config.libdir = libdir.map(PathBuf::from);
+            config.mandir = mandir.map(PathBuf::from);
         }
 
         // Store off these values as options because if they're not provided
@@ -1462,9 +1504,63 @@ impl Config {
         let mut omit_git_hash = None;
 
         if let Some(rust) = toml.rust {
-            set(&mut config.channel, rust.channel);
-
-            config.download_rustc_commit = config.download_ci_rustc_commit(rust.download_rustc);
+            let Rust {
+                optimize: optimize_toml,
+                debug: debug_toml,
+                codegen_units,
+                codegen_units_std,
+                debug_assertions: debug_assertions_toml,
+                debug_assertions_std: debug_assertions_std_toml,
+                overflow_checks: overflow_checks_toml,
+                overflow_checks_std: overflow_checks_std_toml,
+                debug_logging: debug_logging_toml,
+                debuginfo_level: debuginfo_level_toml,
+                debuginfo_level_rustc: debuginfo_level_rustc_toml,
+                debuginfo_level_std: debuginfo_level_std_toml,
+                debuginfo_level_tools: debuginfo_level_tools_toml,
+                debuginfo_level_tests: debuginfo_level_tests_toml,
+                split_debuginfo,
+                backtrace,
+                incremental,
+                parallel_compiler,
+                default_linker,
+                channel,
+                description,
+                musl_root,
+                rpath,
+                verbose_tests,
+                optimize_tests,
+                codegen_tests,
+                omit_git_hash: omit_git_hash_toml,
+                dist_src,
+                save_toolstates,
+                codegen_backends,
+                lld,
+                llvm_tools,
+                deny_warnings,
+                backtrace_on_ice,
+                verify_llvm_ir,
+                thin_lto_import_instr_limit,
+                remap_debuginfo,
+                jemalloc,
+                test_compare_mode,
+                llvm_libunwind,
+                control_flow_guard,
+                ehcont_guard,
+                new_symbol_mangling,
+                profile_generate,
+                profile_use,
+                download_rustc,
+                lto,
+                validate_mir_opts,
+                stack_protector,
+                strip,
+                lld_mode,
+            } = rust;
+
+            set(&mut config.channel, channel);
+
+            config.download_rustc_commit = config.download_ci_rustc_commit(download_rustc);
             // This list is incomplete, please help by expanding it!
             if config.download_rustc_commit.is_some() {
                 // We need the channel used by the downloaded compiler to match the one we set for rustdoc;
@@ -1481,44 +1577,43 @@ impl Config {
                 }
             }
 
-            debug = rust.debug;
-            debug_assertions = rust.debug_assertions;
-            debug_assertions_std = rust.debug_assertions_std;
-            overflow_checks = rust.overflow_checks;
-            overflow_checks_std = rust.overflow_checks_std;
-            debug_logging = rust.debug_logging;
-            debuginfo_level = rust.debuginfo_level;
-            debuginfo_level_rustc = rust.debuginfo_level_rustc;
-            debuginfo_level_std = rust.debuginfo_level_std;
-            debuginfo_level_tools = rust.debuginfo_level_tools;
-            debuginfo_level_tests = rust.debuginfo_level_tests;
-
-            config.rust_split_debuginfo = rust
-                .split_debuginfo
+            debug = debug_toml;
+            debug_assertions = debug_assertions_toml;
+            debug_assertions_std = debug_assertions_std_toml;
+            overflow_checks = overflow_checks_toml;
+            overflow_checks_std = overflow_checks_std_toml;
+            debug_logging = debug_logging_toml;
+            debuginfo_level = debuginfo_level_toml;
+            debuginfo_level_rustc = debuginfo_level_rustc_toml;
+            debuginfo_level_std = debuginfo_level_std_toml;
+            debuginfo_level_tools = debuginfo_level_tools_toml;
+            debuginfo_level_tests = debuginfo_level_tests_toml;
+
+            config.rust_split_debuginfo = split_debuginfo
                 .as_deref()
                 .map(SplitDebuginfo::from_str)
                 .map(|v| v.expect("invalid value for rust.split_debuginfo"))
                 .unwrap_or(SplitDebuginfo::default_for_platform(&config.build.triple));
-            optimize = rust.optimize;
-            omit_git_hash = rust.omit_git_hash;
-            config.rust_new_symbol_mangling = rust.new_symbol_mangling;
-            set(&mut config.rust_optimize_tests, rust.optimize_tests);
-            set(&mut config.codegen_tests, rust.codegen_tests);
-            set(&mut config.rust_rpath, rust.rpath);
-            set(&mut config.rust_strip, rust.strip);
-            config.rust_stack_protector = rust.stack_protector;
-            set(&mut config.jemalloc, rust.jemalloc);
-            set(&mut config.test_compare_mode, rust.test_compare_mode);
-            set(&mut config.backtrace, rust.backtrace);
-            config.description = rust.description;
-            set(&mut config.rust_dist_src, rust.dist_src);
-            set(&mut config.verbose_tests, rust.verbose_tests);
+            optimize = optimize_toml;
+            omit_git_hash = omit_git_hash_toml;
+            config.rust_new_symbol_mangling = new_symbol_mangling;
+            set(&mut config.rust_optimize_tests, optimize_tests);
+            set(&mut config.codegen_tests, codegen_tests);
+            set(&mut config.rust_rpath, rpath);
+            set(&mut config.rust_strip, strip);
+            config.rust_stack_protector = stack_protector;
+            set(&mut config.jemalloc, jemalloc);
+            set(&mut config.test_compare_mode, test_compare_mode);
+            set(&mut config.backtrace, backtrace);
+            config.description = description;
+            set(&mut config.rust_dist_src, dist_src);
+            set(&mut config.verbose_tests, verbose_tests);
             // in the case "false" is set explicitly, do not overwrite the command line args
-            if let Some(true) = rust.incremental {
+            if let Some(true) = incremental {
                 config.incremental = true;
             }
-            set(&mut config.lld_mode, rust.lld_mode);
-            set(&mut config.lld_enabled, rust.lld);
+            set(&mut config.lld_mode, lld_mode);
+            set(&mut config.lld_enabled, lld);
 
             if matches!(config.lld_mode, LldMode::SelfContained)
                 && !config.lld_enabled
@@ -1529,32 +1624,30 @@ impl Config {
                 );
             }
 
-            set(&mut config.llvm_tools_enabled, rust.llvm_tools);
-            config.rustc_parallel = rust
-                .parallel_compiler
-                .unwrap_or(config.channel == "dev" || config.channel == "nightly");
-            config.rustc_default_linker = rust.default_linker;
-            config.musl_root = rust.musl_root.map(PathBuf::from);
-            config.save_toolstates = rust.save_toolstates.map(PathBuf::from);
+            set(&mut config.llvm_tools_enabled, llvm_tools);
+            config.rustc_parallel =
+                parallel_compiler.unwrap_or(config.channel == "dev" || config.channel == "nightly");
+            config.rustc_default_linker = default_linker;
+            config.musl_root = musl_root.map(PathBuf::from);
+            config.save_toolstates = save_toolstates.map(PathBuf::from);
             set(
                 &mut config.deny_warnings,
                 match flags.warnings {
                     Warnings::Deny => Some(true),
                     Warnings::Warn => Some(false),
-                    Warnings::Default => rust.deny_warnings,
+                    Warnings::Default => deny_warnings,
                 },
             );
-            set(&mut config.backtrace_on_ice, rust.backtrace_on_ice);
-            set(&mut config.rust_verify_llvm_ir, rust.verify_llvm_ir);
-            config.rust_thin_lto_import_instr_limit = rust.thin_lto_import_instr_limit;
-            set(&mut config.rust_remap_debuginfo, rust.remap_debuginfo);
-            set(&mut config.control_flow_guard, rust.control_flow_guard);
-            set(&mut config.ehcont_guard, rust.ehcont_guard);
-            config.llvm_libunwind_default = rust
-                .llvm_libunwind
-                .map(|v| v.parse().expect("failed to parse rust.llvm-libunwind"));
-
-            if let Some(ref backends) = rust.codegen_backends {
+            set(&mut config.backtrace_on_ice, backtrace_on_ice);
+            set(&mut config.rust_verify_llvm_ir, verify_llvm_ir);
+            config.rust_thin_lto_import_instr_limit = thin_lto_import_instr_limit;
+            set(&mut config.rust_remap_debuginfo, remap_debuginfo);
+            set(&mut config.control_flow_guard, control_flow_guard);
+            set(&mut config.ehcont_guard, ehcont_guard);
+            config.llvm_libunwind_default =
+                llvm_libunwind.map(|v| v.parse().expect("failed to parse rust.llvm-libunwind"));
+
+            if let Some(ref backends) = codegen_backends {
                 let available_backends = vec!["llvm", "cranelift", "gcc"];
 
                 config.rust_codegen_backends = backends.iter().map(|s| {
@@ -1572,16 +1665,13 @@ impl Config {
                 }).collect();
             }
 
-            config.rust_codegen_units = rust.codegen_units.map(threads_from_config);
-            config.rust_codegen_units_std = rust.codegen_units_std.map(threads_from_config);
-            config.rust_profile_use = flags.rust_profile_use.or(rust.profile_use);
-            config.rust_profile_generate = flags.rust_profile_generate.or(rust.profile_generate);
-            config.rust_lto = rust
-                .lto
-                .as_deref()
-                .map(|value| RustcLto::from_str(value).unwrap())
-                .unwrap_or_default();
-            config.rust_validate_mir_opts = rust.validate_mir_opts;
+            config.rust_codegen_units = codegen_units.map(threads_from_config);
+            config.rust_codegen_units_std = codegen_units_std.map(threads_from_config);
+            config.rust_profile_use = flags.rust_profile_use.or(profile_use);
+            config.rust_profile_generate = flags.rust_profile_generate.or(profile_generate);
+            config.rust_lto =
+                lto.as_deref().map(|value| RustcLto::from_str(value).unwrap()).unwrap_or_default();
+            config.rust_validate_mir_opts = validate_mir_opts;
         } else {
             config.rust_profile_use = flags.rust_profile_use;
             config.rust_profile_generate = flags.rust_profile_generate;
@@ -1595,43 +1685,71 @@ impl Config {
         config.rust_info = GitInfo::new(config.omit_git_hash, &config.src);
 
         if let Some(llvm) = toml.llvm {
-            match llvm.ccache {
+            let Llvm {
+                optimize: optimize_toml,
+                thin_lto,
+                release_debuginfo,
+                assertions,
+                tests,
+                plugins,
+                ccache,
+                static_libstdcpp,
+                ninja,
+                targets,
+                experimental_targets,
+                link_jobs,
+                link_shared,
+                version_suffix,
+                clang_cl,
+                cflags,
+                cxxflags,
+                ldflags,
+                use_libcxx,
+                use_linker,
+                allow_old_toolchain,
+                polly,
+                clang,
+                enable_warnings,
+                download_ci_llvm,
+                build_config,
+            } = llvm;
+            match ccache {
                 Some(StringOrBool::String(ref s)) => config.ccache = Some(s.to_string()),
                 Some(StringOrBool::Bool(true)) => {
                     config.ccache = Some("ccache".to_string());
                 }
                 Some(StringOrBool::Bool(false)) | None => {}
             }
-            set(&mut config.ninja_in_file, llvm.ninja);
-            llvm_assertions = llvm.assertions;
-            llvm_tests = llvm.tests;
-            llvm_plugins = llvm.plugins;
-            set(&mut config.llvm_optimize, llvm.optimize);
-            set(&mut config.llvm_thin_lto, llvm.thin_lto);
-            set(&mut config.llvm_release_debuginfo, llvm.release_debuginfo);
-            set(&mut config.llvm_static_stdcpp, llvm.static_libstdcpp);
-            if let Some(v) = llvm.link_shared {
+            set(&mut config.ninja_in_file, ninja);
+            llvm_assertions = assertions;
+            llvm_tests = tests;
+            llvm_plugins = plugins;
+            set(&mut config.llvm_optimize, optimize_toml);
+            set(&mut config.llvm_thin_lto, thin_lto);
+            set(&mut config.llvm_release_debuginfo, release_debuginfo);
+            set(&mut config.llvm_static_stdcpp, static_libstdcpp);
+            if let Some(v) = link_shared {
                 config.llvm_link_shared.set(Some(v));
             }
-            config.llvm_targets = llvm.targets.clone();
-            config.llvm_experimental_targets = llvm.experimental_targets.clone();
-            config.llvm_link_jobs = llvm.link_jobs;
-            config.llvm_version_suffix = llvm.version_suffix.clone();
-            config.llvm_clang_cl = llvm.clang_cl.clone();
-
-            config.llvm_cflags = llvm.cflags.clone();
-            config.llvm_cxxflags = llvm.cxxflags.clone();
-            config.llvm_ldflags = llvm.ldflags.clone();
-            set(&mut config.llvm_use_libcxx, llvm.use_libcxx);
-            config.llvm_use_linker = llvm.use_linker.clone();
-            config.llvm_allow_old_toolchain = llvm.allow_old_toolchain.unwrap_or(false);
-            config.llvm_polly = llvm.polly.unwrap_or(false);
-            config.llvm_clang = llvm.clang.unwrap_or(false);
-            config.llvm_enable_warnings = llvm.enable_warnings.unwrap_or(false);
-            config.llvm_build_config = llvm.build_config.clone().unwrap_or(Default::default());
+            config.llvm_targets = targets.clone();
+            config.llvm_experimental_targets = experimental_targets.clone();
+            config.llvm_link_jobs = link_jobs;
+            config.llvm_version_suffix = version_suffix.clone();
+            config.llvm_clang_cl = clang_cl.clone();
+
+            config.llvm_cflags = cflags.clone();
+            config.llvm_cxxflags = cxxflags.clone();
+            config.llvm_ldflags = ldflags.clone();
+            set(&mut config.llvm_use_libcxx, use_libcxx);
+            config.llvm_use_linker = use_linker.clone();
+            config.llvm_allow_old_toolchain = allow_old_toolchain.unwrap_or(false);
+            config.llvm_polly = polly.unwrap_or(false);
+            config.llvm_clang = clang.unwrap_or(false);
+            config.llvm_enable_warnings = enable_warnings.unwrap_or(false);
+            config.llvm_build_config = build_config.clone().unwrap_or(Default::default());
 
             let asserts = llvm_assertions.unwrap_or(false);
-            config.llvm_from_ci = config.parse_download_ci_llvm(llvm.download_ci_llvm, asserts);
+            config.llvm_from_ci = config.parse_download_ci_llvm(download_ci_llvm, asserts);
 
             if config.llvm_from_ci {
                 // None of the LLVM options, except assertions, are supported
@@ -1640,31 +1758,31 @@ impl Config {
                 // explicitly set. The defaults and CI defaults don't
                 // necessarily match but forcing people to match (somewhat
                 // arbitrary) CI configuration locally seems bad/hard.
-                check_ci_llvm!(llvm.optimize);
-                check_ci_llvm!(llvm.thin_lto);
-                check_ci_llvm!(llvm.release_debuginfo);
+                check_ci_llvm!(optimize_toml);
+                check_ci_llvm!(thin_lto);
+                check_ci_llvm!(release_debuginfo);
                 // CI-built LLVM can be either dynamic or static. We won't know until we download it.
-                check_ci_llvm!(llvm.link_shared);
-                check_ci_llvm!(llvm.static_libstdcpp);
-                check_ci_llvm!(llvm.targets);
-                check_ci_llvm!(llvm.experimental_targets);
-                check_ci_llvm!(llvm.link_jobs);
-                check_ci_llvm!(llvm.clang_cl);
-                check_ci_llvm!(llvm.version_suffix);
-                check_ci_llvm!(llvm.cflags);
-                check_ci_llvm!(llvm.cxxflags);
-                check_ci_llvm!(llvm.ldflags);
-                check_ci_llvm!(llvm.use_libcxx);
-                check_ci_llvm!(llvm.use_linker);
-                check_ci_llvm!(llvm.allow_old_toolchain);
-                check_ci_llvm!(llvm.polly);
-                check_ci_llvm!(llvm.clang);
-                check_ci_llvm!(llvm.build_config);
-                check_ci_llvm!(llvm.plugins);
+                check_ci_llvm!(link_shared);
+                check_ci_llvm!(static_libstdcpp);
+                check_ci_llvm!(targets);
+                check_ci_llvm!(experimental_targets);
+                check_ci_llvm!(link_jobs);
+                check_ci_llvm!(clang_cl);
+                check_ci_llvm!(version_suffix);
+                check_ci_llvm!(cflags);
+                check_ci_llvm!(cxxflags);
+                check_ci_llvm!(ldflags);
+                check_ci_llvm!(use_libcxx);
+                check_ci_llvm!(use_linker);
+                check_ci_llvm!(allow_old_toolchain);
+                check_ci_llvm!(polly);
+                check_ci_llvm!(clang);
+                check_ci_llvm!(build_config);
+                check_ci_llvm!(plugins);
             }
 
             // NOTE: can never be hit when downloading from CI, since we call `check_ci_llvm!(thin_lto)` above.
-            if config.llvm_thin_lto && llvm.link_shared.is_none() {
+            if config.llvm_thin_lto && link_shared.is_none() {
                 // If we're building with ThinLTO on, by default we want to link
                 // to LLVM shared, to avoid re-doing ThinLTO (which happens in
                 // the link step) with each stage.
@@ -1730,17 +1848,26 @@ impl Config {
             build_target.llvm_filecheck = Some(ci_llvm_bin.join(exe("FileCheck", config.build)));
         }
 
-        if let Some(t) = toml.dist {
-            config.dist_sign_folder = t.sign_folder.map(PathBuf::from);
-            config.dist_upload_addr = t.upload_addr;
-            config.dist_compression_formats = t.compression_formats;
-            set(&mut config.dist_compression_profile, t.compression_profile);
-            set(&mut config.rust_dist_src, t.src_tarball);
-            set(&mut config.missing_tools, t.missing_tools);
-            set(&mut config.dist_include_mingw_linker, t.include_mingw_linker)
+        if let Some(dist) = toml.dist {
+            let Dist {
+                sign_folder,
+                upload_addr,
+                src_tarball,
+                missing_tools,
+                compression_formats,
+                compression_profile,
+                include_mingw_linker,
+            } = dist;
+            config.dist_sign_folder = sign_folder.map(PathBuf::from);
+            config.dist_upload_addr = upload_addr;
+            config.dist_compression_formats = compression_formats;
+            set(&mut config.dist_compression_profile, compression_profile);
+            set(&mut config.rust_dist_src, src_tarball);
+            set(&mut config.missing_tools, missing_tools);
+            set(&mut config.dist_include_mingw_linker, include_mingw_linker)
         }
 
-        if let Some(r) = build.rustfmt {
+        if let Some(r) = rustfmt {
             *config.initial_rustfmt.borrow_mut() = if r.exists() {
                 RustfmtState::SystemToolchain(r)
             } else {
@@ -1781,20 +1908,20 @@ impl Config {
         let download_rustc = config.download_rustc_commit.is_some();
         // See https://github.com/rust-lang/compiler-team/issues/326
         config.stage = match config.cmd {
-            Subcommand::Check { .. } => flags.stage.or(build.check_stage).unwrap_or(0),
+            Subcommand::Check { .. } => flags.stage.or(check_stage).unwrap_or(0),
             // `download-rustc` only has a speed-up for stage2 builds. Default to stage2 unless explicitly overridden.
             Subcommand::Doc { .. } => {
-                flags.stage.or(build.doc_stage).unwrap_or(if download_rustc { 2 } else { 0 })
+                flags.stage.or(doc_stage).unwrap_or(if download_rustc { 2 } else { 0 })
             }
             Subcommand::Build { .. } => {
-                flags.stage.or(build.build_stage).unwrap_or(if download_rustc { 2 } else { 1 })
+                flags.stage.or(build_stage).unwrap_or(if download_rustc { 2 } else { 1 })
             }
             Subcommand::Test { .. } => {
-                flags.stage.or(build.test_stage).unwrap_or(if download_rustc { 2 } else { 1 })
+                flags.stage.or(test_stage).unwrap_or(if download_rustc { 2 } else { 1 })
             }
-            Subcommand::Bench { .. } => flags.stage.or(build.bench_stage).unwrap_or(2),
-            Subcommand::Dist { .. } => flags.stage.or(build.dist_stage).unwrap_or(2),
-            Subcommand::Install { .. } => flags.stage.or(build.install_stage).unwrap_or(2),
+            Subcommand::Bench { .. } => flags.stage.or(bench_stage).unwrap_or(2),
+            Subcommand::Dist { .. } => flags.stage.or(dist_stage).unwrap_or(2),
+            Subcommand::Install { .. } => flags.stage.or(install_stage).unwrap_or(2),
             // These are all bootstrap tools, which don't depend on the compiler.
             // The stage we pass shouldn't matter, but use 0 just in case.
             Subcommand::Clean { .. }
diff --git a/src/bootstrap/src/utils/change_tracker.rs b/src/bootstrap/src/utils/change_tracker.rs
index af3b238dfc3..8b53a61542e 100644
--- a/src/bootstrap/src/utils/change_tracker.rs
+++ b/src/bootstrap/src/utils/change_tracker.rs
@@ -91,4 +91,9 @@ pub const CONFIG_CHANGE_HISTORY: &[ChangeInfo] = &[
         severity: ChangeSeverity::Info,
         summary: "The `rust.use-lld` configuration now has different options ('external'/true or 'self-contained'), and its behaviour has changed.",
     },
+    ChangeInfo {
+        change_id: 118703,
+        severity: ChangeSeverity::Info,
+        summary: "Removed rust.run_dsymutil and dist.gpg_password_file config options, as they were unused.",
+    },
 ];
diff --git a/src/bootstrap/src/utils/helpers.rs b/src/bootstrap/src/utils/helpers.rs
index e563a83c5c4..133792d85e8 100644
--- a/src/bootstrap/src/utils/helpers.rs
+++ b/src/bootstrap/src/utils/helpers.rs
@@ -15,7 +15,8 @@ use std::sync::OnceLock;
 use std::time::{Instant, SystemTime, UNIX_EPOCH};
 
 use crate::core::builder::Builder;
-use crate::core::config::{Config, LldMode, TargetSelection};
+use crate::core::config::{Config, TargetSelection};
+use crate::LldMode;
 
 pub use crate::utils::dylib::{dylib_path, dylib_path_var};
 
@@ -513,16 +514,7 @@ pub fn linker_flags(
 ) -> Vec<String> {
     let mut args = vec![];
     if !builder.is_lld_direct_linker(target) && builder.config.lld_mode.is_used() {
-        match builder.config.lld_mode {
-            LldMode::External => {
-                args.push("-Clinker-flavor=gnu-lld-cc".to_string());
-            }
-            LldMode::SelfContained => {
-                args.push("-Clinker-flavor=gnu-lld-cc".to_string());
-                args.push("-Clink-self-contained=+linker".to_string());
-            }
-            LldMode::Unused => {}
-        }
+        args.push(String::from("-Clink-arg=-fuse-ld=lld"));
 
         if matches!(lld_threads, LldThreads::No) {
             args.push(format!(
diff --git a/src/doc/unstable-book/src/compiler-flags/env.md b/src/doc/unstable-book/src/compiler-flags/env.md
new file mode 100644
index 00000000000..df0547dd24b
--- /dev/null
+++ b/src/doc/unstable-book/src/compiler-flags/env.md
@@ -0,0 +1,26 @@
+# `env`
+
+The tracking issue for this feature is: [#118372](https://github.com/rust-lang/rust/issues/118372).
+
+------------------------
+
+This option flag allows to specify environment variables value at compile time to be
+used by `env!` and `option_env!` macros.
+
+When retrieving an environment variable value, the one specified by `--env` will take
+precedence. For example, if you want have `PATH=a` in your environment and pass:
+
+```bash
+rustc --env PATH=env
+```
+
+Then you will have:
+
+```rust,no_run
+assert_eq!(env!("PATH"), "env");
+```
+
+Please note that on Windows, environment variables are case insensitive but case
+preserving whereas `rustc`'s environment variables are case sensitive. For example,
+having `Path` in your environment (case insensitive) is different than using
+`rustc --env Path=...` (case sensitive).
diff --git a/src/librustdoc/clean/render_macro_matchers.rs b/src/librustdoc/clean/render_macro_matchers.rs
index 66d10f2368b..605f9e496c7 100644
--- a/src/librustdoc/clean/render_macro_matchers.rs
+++ b/src/librustdoc/clean/render_macro_matchers.rs
@@ -40,7 +40,7 @@ pub(super) fn render_macro_matcher(tcx: TyCtxt<'_>, matcher: &TokenTree) -> Stri
     printer.zerobreak();
     printer.ibox(0);
     match matcher {
-        TokenTree::Delimited(_span, _delim, tts) => print_tts(&mut printer, tts),
+        TokenTree::Delimited(_span, _spacing, _delim, tts) => print_tts(&mut printer, tts),
         // Matcher which is not a Delimited is unexpected and should've failed
         // to compile, but we render whatever it is wrapped in parens.
         TokenTree::Token(..) => print_tt(&mut printer, matcher),
@@ -97,7 +97,7 @@ fn print_tt(printer: &mut Printer<'_>, tt: &TokenTree) {
                 printer.hardbreak()
             }
         }
-        TokenTree::Delimited(_span, delim, tts) => {
+        TokenTree::Delimited(_span, _spacing, delim, tts) => {
             let open_delim = printer.token_kind_to_string(&token::OpenDelim(*delim));
             printer.word(open_delim);
             if !tts.is_empty() {
@@ -158,7 +158,7 @@ fn print_tts(printer: &mut Printer<'_>, tts: &TokenStream) {
                 (_, token::Pound) => (true, Pound),
                 (_, _) => (true, Other),
             },
-            TokenTree::Delimited(_, delim, _) => match (state, delim) {
+            TokenTree::Delimited(.., delim, _) => match (state, delim) {
                 (Dollar, Delimiter::Parenthesis) => (false, DollarParen),
                 (Pound | PoundBang, Delimiter::Bracket) => (false, Other),
                 (Ident, Delimiter::Parenthesis | Delimiter::Bracket) => (false, Other),
diff --git a/src/tools/clippy/clippy_lints/src/crate_in_macro_def.rs b/src/tools/clippy/clippy_lints/src/crate_in_macro_def.rs
index d4828778be2..b1aa472aa03 100644
--- a/src/tools/clippy/clippy_lints/src/crate_in_macro_def.rs
+++ b/src/tools/clippy/clippy_lints/src/crate_in_macro_def.rs
@@ -92,7 +92,7 @@ fn contains_unhygienic_crate_reference(tts: &TokenStream) -> Option<Span> {
         {
             return Some(span);
         }
-        if let TokenTree::Delimited(_, _, tts) = &curr {
+        if let TokenTree::Delimited(.., tts) = &curr {
             let span = contains_unhygienic_crate_reference(tts);
             if span.is_some() {
                 return span;
diff --git a/src/tools/miri/tests/pass/function_calls/abi_compat.rs b/src/tools/miri/tests/pass/function_calls/abi_compat.rs
index b24fe56cad6..14fd2d333d4 100644
--- a/src/tools/miri/tests/pass/function_calls/abi_compat.rs
+++ b/src/tools/miri/tests/pass/function_calls/abi_compat.rs
@@ -71,6 +71,8 @@ fn main() {
         test_abi_compat(0isize, 0i64);
     }
     test_abi_compat(42u32, num::NonZeroU32::new(1).unwrap());
+    // - `char` and `u32`.
+    test_abi_compat(42u32, 'x');
     // - Reference/pointer types with the same pointee.
     test_abi_compat(&0u32, &0u32 as *const u32);
     test_abi_compat(&mut 0u32 as *mut u32, Box::new(0u32));
@@ -81,7 +83,7 @@ fn main() {
     test_abi_compat(main as fn(), id::<i32> as fn(i32) -> i32);
     // - 1-ZST
     test_abi_compat((), [0u8; 0]);
-    // - Guaranteed null-pointer-optimizations.
+    // - Guaranteed null-pointer-optimizations (RFC 3391).
     test_abi_compat(&0u32 as *const u32, Some(&0u32));
     test_abi_compat(main as fn(), Some(main as fn()));
     test_abi_compat(0u32, Some(num::NonZeroU32::new(1).unwrap()));
@@ -103,6 +105,8 @@ fn main() {
     test_abi_newtype::<Option<num::NonZeroU32>>();
 
     // Extra test for assumptions made by arbitrary-self-dyn-receivers.
+    // This is interesting since these types are not `repr(transparent)`. So this is not part of our
+    // public ABI guarantees, but is relied on by the compiler.
     let rc = Rc::new(0);
     let rc_ptr: *mut i32 = unsafe { mem::transmute_copy(&rc) };
     test_abi_compat(rc, rc_ptr);
diff --git a/src/tools/rustfmt/src/macros.rs b/src/tools/rustfmt/src/macros.rs
index 76553466e48..b4c58d2fefb 100644
--- a/src/tools/rustfmt/src/macros.rs
+++ b/src/tools/rustfmt/src/macros.rs
@@ -708,7 +708,7 @@ struct MacroArgParser {
 fn last_tok(tt: &TokenTree) -> Token {
     match *tt {
         TokenTree::Token(ref t, _) => t.clone(),
-        TokenTree::Delimited(delim_span, delim, _) => Token {
+        TokenTree::Delimited(delim_span, _, delim, _) => Token {
             kind: TokenKind::CloseDelim(delim),
             span: delim_span.close,
         },
@@ -925,7 +925,7 @@ impl MacroArgParser {
                     self.add_meta_variable(&mut iter)?;
                 }
                 TokenTree::Token(ref t, _) => self.update_buffer(t),
-                &TokenTree::Delimited(_delimited_span, delimited, ref tts) => {
+                &TokenTree::Delimited(_dspan, _spacing, delimited, ref tts) => {
                     if !self.buf.is_empty() {
                         if next_space(&self.last_tok.kind) == SpaceState::Always {
                             self.add_separator();
@@ -1167,7 +1167,7 @@ impl<'a> MacroParser<'a> {
         let tok = self.toks.next()?;
         let (lo, args_paren_kind) = match tok {
             TokenTree::Token(..) => return None,
-            &TokenTree::Delimited(delimited_span, d, _) => (delimited_span.open.lo(), d),
+            &TokenTree::Delimited(delimited_span, _, d, _) => (delimited_span.open.lo(), d),
         };
         let args = TokenStream::new(vec![tok.clone()]);
         match self.toks.next()? {
diff --git a/src/tools/rustfmt/tests/source/issue-2927-2.rs b/src/tools/rustfmt/tests/source/issue-2927-2.rs
index d87761fdc9c..07afef38cf5 100644
--- a/src/tools/rustfmt/tests/source/issue-2927-2.rs
+++ b/src/tools/rustfmt/tests/source/issue-2927-2.rs
@@ -1,5 +1,5 @@
 // rustfmt-edition: 2015
-#![feature(rust_2018_preview, uniform_paths)]
+#![feature(uniform_paths)]
 use futures::prelude::*;
 use http_03::cli::Cli;
 use hyper::{service::service_fn_ok, Body, Response, Server};
diff --git a/src/tools/rustfmt/tests/source/issue-2927.rs b/src/tools/rustfmt/tests/source/issue-2927.rs
index a7df32084f3..c7ec7bb0855 100644
--- a/src/tools/rustfmt/tests/source/issue-2927.rs
+++ b/src/tools/rustfmt/tests/source/issue-2927.rs
@@ -1,5 +1,5 @@
 // rustfmt-edition: 2018
-#![feature(rust_2018_preview, uniform_paths)]
+#![feature(uniform_paths)]
 use futures::prelude::*;
 use http_03::cli::Cli;
 use hyper::{service::service_fn_ok, Body, Response, Server};
diff --git a/src/tools/rustfmt/tests/target/issue-2927-2.rs b/src/tools/rustfmt/tests/target/issue-2927-2.rs
index e895783ba8b..46e0bf0e989 100644
--- a/src/tools/rustfmt/tests/target/issue-2927-2.rs
+++ b/src/tools/rustfmt/tests/target/issue-2927-2.rs
@@ -1,5 +1,5 @@
 // rustfmt-edition: 2015
-#![feature(rust_2018_preview, uniform_paths)]
+#![feature(uniform_paths)]
 use futures::prelude::*;
 use http_03::cli::Cli;
 use hyper::{service::service_fn_ok, Body, Response, Server};
diff --git a/src/tools/rustfmt/tests/target/issue-2927.rs b/src/tools/rustfmt/tests/target/issue-2927.rs
index 3267be28d7b..56afc2d3e40 100644
--- a/src/tools/rustfmt/tests/target/issue-2927.rs
+++ b/src/tools/rustfmt/tests/target/issue-2927.rs
@@ -1,5 +1,5 @@
 // rustfmt-edition: 2018
-#![feature(rust_2018_preview, uniform_paths)]
+#![feature(uniform_paths)]
 use ::log::{error, info, log};
 use futures::prelude::*;
 use http_03::cli::Cli;
diff --git a/tests/pretty/cast-lt.pp b/tests/pretty/cast-lt.pp
index e6c4d195691..61cd8f59712 100644
--- a/tests/pretty/cast-lt.pp
+++ b/tests/pretty/cast-lt.pp
@@ -8,6 +8,6 @@ extern crate std;
 // pretty-mode:expanded
 // pp-exact:cast-lt.pp
 
-macro_rules! negative { ($e : expr) => { $e < 0 } }
+macro_rules! negative { ($e:expr) => { $e < 0 } }
 
 fn main() { (1 as i32) < 0; }
diff --git a/tests/run-make/rustc-macro-dep-files/foo.rs b/tests/run-make/rustc-macro-dep-files/foo.rs
index 66db1a21736..00b1c26d43f 100644
--- a/tests/run-make/rustc-macro-dep-files/foo.rs
+++ b/tests/run-make/rustc-macro-dep-files/foo.rs
@@ -7,6 +7,6 @@ use proc_macro::TokenStream;
 #[proc_macro_derive(A)]
 pub fn derive(input: TokenStream) -> TokenStream {
     let input = input.to_string();
-    assert!(input.contains("struct A ;"));
+    assert!(input.contains("struct A;"));
     "struct B;".parse().unwrap()
 }
diff --git a/tests/ui/abi/compatibility.rs b/tests/ui/abi/compatibility.rs
index d5f05313078..c6bba7186da 100644
--- a/tests/ui/abi/compatibility.rs
+++ b/tests/ui/abi/compatibility.rs
@@ -263,6 +263,13 @@ test_abi_compatible!(box_ptr, Box<i32>, *const i32);
 test_abi_compatible!(nonnull_ptr, NonNull<i32>, *const i32);
 test_abi_compatible!(fn_fn, fn(), fn(i32) -> i32);
 
+// Compatibility of integer types.
+test_abi_compatible!(char_uint, char, u32);
+#[cfg(target_pointer_width = "32")]
+test_abi_compatible!(isize_int, isize, i32);
+#[cfg(target_pointer_width = "64")]
+test_abi_compatible!(isize_int, isize, i64);
+
 // Compatibility of 1-ZST.
 test_abi_compatible!(zst_unit, Zst, ());
 #[cfg(not(any(target_arch = "sparc64")))]
diff --git a/tests/ui/async-await/issues/issue-60674.stdout b/tests/ui/async-await/issues/issue-60674.stdout
index 6f980e60664..df129b033d2 100644
--- a/tests/ui/async-await/issues/issue-60674.stdout
+++ b/tests/ui/async-await/issues/issue-60674.stdout
@@ -1,3 +1,3 @@
-async fn f(mut x : u8) {}
-async fn g((mut x, y, mut z) : (u8, u8, u8)) {}
-async fn g(mut x : u8, (a, mut b, c) : (u8, u8, u8), y : u8) {}
+async fn f(mut x: u8) {}
+async fn g((mut x, y, mut z): (u8, u8, u8)) {}
+async fn g(mut x: u8, (a, mut b, c): (u8, u8, u8), y: u8) {}
diff --git a/tests/ui/check-cfg/allow-same-level.stderr b/tests/ui/check-cfg/allow-same-level.stderr
index 19d9443d477..652efc3f591 100644
--- a/tests/ui/check-cfg/allow-same-level.stderr
+++ b/tests/ui/check-cfg/allow-same-level.stderr
@@ -4,7 +4,7 @@ warning: unexpected `cfg` condition name: `FALSE`
 LL | #[cfg(FALSE)]
    |       ^^^^^
    |
-   = help: expected names are: `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
+   = help: expected names are: `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
    = note: `#[warn(unexpected_cfgs)]` on by default
 
 warning: 1 warning emitted
diff --git a/tests/ui/check-cfg/compact-names.stderr b/tests/ui/check-cfg/compact-names.stderr
index ffde972a25e..d3bfb9f7100 100644
--- a/tests/ui/check-cfg/compact-names.stderr
+++ b/tests/ui/check-cfg/compact-names.stderr
@@ -4,7 +4,7 @@ warning: unexpected `cfg` condition name: `target_architecture`
 LL | #[cfg(target(os = "linux", architecture = "arm"))]
    |                            ^^^^^^^^^^^^^^^^^^^^
    |
-   = help: expected names are: `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
+   = help: expected names are: `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
    = note: `#[warn(unexpected_cfgs)]` on by default
 
 warning: 1 warning emitted
diff --git a/tests/ui/check-cfg/exhaustive-names-values.empty_cfg.stderr b/tests/ui/check-cfg/exhaustive-names-values.empty_cfg.stderr
index 9efc77fb43f..9501c134bac 100644
--- a/tests/ui/check-cfg/exhaustive-names-values.empty_cfg.stderr
+++ b/tests/ui/check-cfg/exhaustive-names-values.empty_cfg.stderr
@@ -4,7 +4,7 @@ warning: unexpected `cfg` condition name: `unknown_key`
 LL | #[cfg(unknown_key = "value")]
    |       ^^^^^^^^^^^^^^^^^^^^^
    |
-   = help: expected names are: `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
+   = help: expected names are: `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
    = note: `#[warn(unexpected_cfgs)]` on by default
 
 warning: unexpected `cfg` condition value: `value`
diff --git a/tests/ui/check-cfg/exhaustive-names-values.empty_names_values.stderr b/tests/ui/check-cfg/exhaustive-names-values.empty_names_values.stderr
index 971abb1a21a..e37a222f52a 100644
--- a/tests/ui/check-cfg/exhaustive-names-values.empty_names_values.stderr
+++ b/tests/ui/check-cfg/exhaustive-names-values.empty_names_values.stderr
@@ -4,7 +4,7 @@ warning: unexpected `cfg` condition name: `unknown_key`
 LL | #[cfg(unknown_key = "value")]
    |       ^^^^^^^^^^^^^^^^^^^^^
    |
-   = help: expected names are: `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
+   = help: expected names are: `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
    = note: `#[warn(unexpected_cfgs)]` on by default
 
 warning: unexpected `cfg` condition value: `value`
diff --git a/tests/ui/check-cfg/exhaustive-names-values.feature.stderr b/tests/ui/check-cfg/exhaustive-names-values.feature.stderr
index 4549482abcb..ea204eaff1b 100644
--- a/tests/ui/check-cfg/exhaustive-names-values.feature.stderr
+++ b/tests/ui/check-cfg/exhaustive-names-values.feature.stderr
@@ -4,7 +4,7 @@ warning: unexpected `cfg` condition name: `unknown_key`
 LL | #[cfg(unknown_key = "value")]
    |       ^^^^^^^^^^^^^^^^^^^^^
    |
-   = help: expected names are: `debug_assertions`, `doc`, `doctest`, `feature`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
+   = help: expected names are: `debug_assertions`, `doc`, `doctest`, `feature`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
    = note: `#[warn(unexpected_cfgs)]` on by default
 
 warning: unexpected `cfg` condition value: `value`
diff --git a/tests/ui/check-cfg/exhaustive-names-values.full.stderr b/tests/ui/check-cfg/exhaustive-names-values.full.stderr
index 4549482abcb..ea204eaff1b 100644
--- a/tests/ui/check-cfg/exhaustive-names-values.full.stderr
+++ b/tests/ui/check-cfg/exhaustive-names-values.full.stderr
@@ -4,7 +4,7 @@ warning: unexpected `cfg` condition name: `unknown_key`
 LL | #[cfg(unknown_key = "value")]
    |       ^^^^^^^^^^^^^^^^^^^^^
    |
-   = help: expected names are: `debug_assertions`, `doc`, `doctest`, `feature`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
+   = help: expected names are: `debug_assertions`, `doc`, `doctest`, `feature`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
    = note: `#[warn(unexpected_cfgs)]` on by default
 
 warning: unexpected `cfg` condition value: `value`
diff --git a/tests/ui/check-cfg/exhaustive-names.exhaustive_names.stderr b/tests/ui/check-cfg/exhaustive-names.exhaustive_names.stderr
index 7d01c73cc09..b5c8cad275f 100644
--- a/tests/ui/check-cfg/exhaustive-names.exhaustive_names.stderr
+++ b/tests/ui/check-cfg/exhaustive-names.exhaustive_names.stderr
@@ -4,7 +4,7 @@ warning: unexpected `cfg` condition name: `unknown_key`
 LL | #[cfg(unknown_key = "value")]
    |       ^^^^^^^^^^^^^^^^^^^^^
    |
-   = help: expected names are: `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
+   = help: expected names are: `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
    = note: `#[warn(unexpected_cfgs)]` on by default
 
 warning: 1 warning emitted
diff --git a/tests/ui/check-cfg/exhaustive-names.stderr b/tests/ui/check-cfg/exhaustive-names.stderr
index 866595b1213..c5f6d537c5e 100644
--- a/tests/ui/check-cfg/exhaustive-names.stderr
+++ b/tests/ui/check-cfg/exhaustive-names.stderr
@@ -4,7 +4,7 @@ warning: unexpected `cfg` condition name: `unknown_key`
 LL | #[cfg(unknown_key = "value")]
    |       ^^^^^^^^^^^^^^^^^^^^^
    |
-   = help: expected names are: `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
+   = help: expected names are: `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
    = note: `#[warn(unexpected_cfgs)]` on by default
 
 warning: 1 warning emitted
diff --git a/tests/ui/check-cfg/mix.cfg.stderr b/tests/ui/check-cfg/mix.cfg.stderr
index 21c0c7da1dd..046d40f36b0 100644
--- a/tests/ui/check-cfg/mix.cfg.stderr
+++ b/tests/ui/check-cfg/mix.cfg.stderr
@@ -36,7 +36,7 @@ warning: unexpected `cfg` condition name: `uu`
 LL | #[cfg_attr(uu, test)]
    |            ^^
    |
-   = help: expected names are: `cfg`, `debug_assertions`, `doc`, `doctest`, `feature`, `miri`, `names_values`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
+   = help: expected names are: `cfg`, `debug_assertions`, `doc`, `doctest`, `feature`, `miri`, `names_values`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
 
 warning: unexpected `cfg` condition name: `widnows`
   --> $DIR/mix.rs:43:10
diff --git a/tests/ui/check-cfg/mix.stderr b/tests/ui/check-cfg/mix.stderr
index eefdbd6af30..25b8f95ae2f 100644
--- a/tests/ui/check-cfg/mix.stderr
+++ b/tests/ui/check-cfg/mix.stderr
@@ -36,7 +36,7 @@ warning: unexpected `cfg` condition name: `uu`
 LL | #[cfg_attr(uu, test)]
    |            ^^
    |
-   = help: expected names are: `debug_assertions`, `doc`, `doctest`, `feature`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
+   = help: expected names are: `debug_assertions`, `doc`, `doctest`, `feature`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
 
 warning: unexpected `cfg` condition name: `widnows`
   --> $DIR/mix.rs:40:10
diff --git a/tests/ui/check-cfg/stmt-no-ice.stderr b/tests/ui/check-cfg/stmt-no-ice.stderr
index 3fb3ae27ec4..c2483fe4a06 100644
--- a/tests/ui/check-cfg/stmt-no-ice.stderr
+++ b/tests/ui/check-cfg/stmt-no-ice.stderr
@@ -4,7 +4,7 @@ warning: unexpected `cfg` condition name: `crossbeam_loom`
 LL |     #[cfg(crossbeam_loom)]
    |           ^^^^^^^^^^^^^^
    |
-   = help: expected names are: `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
+   = help: expected names are: `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
    = note: `#[warn(unexpected_cfgs)]` on by default
 
 warning: 1 warning emitted
diff --git a/tests/ui/check-cfg/well-known-names.stderr b/tests/ui/check-cfg/well-known-names.stderr
index a986e61bcdc..6040663074d 100644
--- a/tests/ui/check-cfg/well-known-names.stderr
+++ b/tests/ui/check-cfg/well-known-names.stderr
@@ -16,7 +16,7 @@ warning: unexpected `cfg` condition name: `features`
 LL | #[cfg(features = "foo")]
    |       ^^^^^^^^^^^^^^^^
    |
-   = help: expected names are: `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
+   = help: expected names are: `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
 
 warning: unexpected `cfg` condition name: `feature`
   --> $DIR/well-known-names.rs:17:7
diff --git a/tests/ui/codegen/const-bool-bitcast.rs b/tests/ui/codegen/const-bool-bitcast.rs
new file mode 100644
index 00000000000..24ae76b9029
--- /dev/null
+++ b/tests/ui/codegen/const-bool-bitcast.rs
@@ -0,0 +1,15 @@
+// This is a regression test for https://github.com/rust-lang/rust/issues/118047
+// build-pass
+// compile-flags: -Zmir-opt-level=0 -Zmir-enable-passes=+DataflowConstProp
+
+#![crate_type = "lib"]
+
+pub struct State {
+    inner: bool
+}
+
+pub fn make() -> State {
+    State {
+        inner: true
+    }
+}
diff --git a/tests/ui/editions/edition-feature-ok.rs b/tests/ui/editions/edition-feature-ok.rs
deleted file mode 100644
index 69242fd715c..00000000000
--- a/tests/ui/editions/edition-feature-ok.rs
+++ /dev/null
@@ -1,5 +0,0 @@
-// check-pass
-
-#![feature(rust_2018_preview)]
-
-fn main() {}
diff --git a/tests/ui/editions/edition-feature-redundant.rs b/tests/ui/editions/edition-feature-redundant.rs
deleted file mode 100644
index 1049a2da8fd..00000000000
--- a/tests/ui/editions/edition-feature-redundant.rs
+++ /dev/null
@@ -1,7 +0,0 @@
-// edition:2018
-// check-pass
-
-#![feature(rust_2018_preview)]
-//~^ WARN the feature `rust_2018_preview` is included in the Rust 2018 edition
-
-fn main() {}
diff --git a/tests/ui/editions/edition-feature-redundant.stderr b/tests/ui/editions/edition-feature-redundant.stderr
deleted file mode 100644
index b11e616d7f2..00000000000
--- a/tests/ui/editions/edition-feature-redundant.stderr
+++ /dev/null
@@ -1,9 +0,0 @@
-warning[E0705]: the feature `rust_2018_preview` is included in the Rust 2018 edition
-  --> $DIR/edition-feature-redundant.rs:4:12
-   |
-LL | #![feature(rust_2018_preview)]
-   |            ^^^^^^^^^^^^^^^^^
-
-warning: 1 warning emitted
-
-For more information about this error, try `rustc --explain E0705`.
diff --git a/tests/ui/editions/epoch-gate-feature.rs b/tests/ui/editions/epoch-gate-feature.rs
deleted file mode 100644
index 5f7feb5347b..00000000000
--- a/tests/ui/editions/epoch-gate-feature.rs
+++ /dev/null
@@ -1,15 +0,0 @@
-// run-pass
-
-#![allow(dead_code)]
-#![allow(unused_variables)]
-// Checks if the correct registers are being used to pass arguments
-// when the sysv64 ABI is specified.
-
-#![feature(rust_2018_preview)]
-
-pub trait Foo {}
-
-// should compile without the dyn trait feature flag
-fn foo(x: &dyn Foo) {}
-
-pub fn main() {}
diff --git a/tests/ui/error-codes/E0705.rs b/tests/ui/error-codes/E0705.rs
deleted file mode 100644
index 05abcb629b1..00000000000
--- a/tests/ui/error-codes/E0705.rs
+++ /dev/null
@@ -1,10 +0,0 @@
-// check-pass
-
-// This is a stub feature that doesn't control anything, so to make tidy happy,
-// gate-test-test_2018_feature
-
-#![feature(test_2018_feature)]
-//~^ WARN the feature `test_2018_feature` is included in the Rust 2018 edition
-#![feature(rust_2018_preview)]
-
-fn main() {}
diff --git a/tests/ui/error-codes/E0705.stderr b/tests/ui/error-codes/E0705.stderr
deleted file mode 100644
index 6fa843158bb..00000000000
--- a/tests/ui/error-codes/E0705.stderr
+++ /dev/null
@@ -1,9 +0,0 @@
-warning[E0705]: the feature `test_2018_feature` is included in the Rust 2018 edition
-  --> $DIR/E0705.rs:6:12
-   |
-LL | #![feature(test_2018_feature)]
-   |            ^^^^^^^^^^^^^^^^^
-
-warning: 1 warning emitted
-
-For more information about this error, try `rustc --explain E0705`.
diff --git a/tests/ui/extenv/extenv-env-overload.rs b/tests/ui/extenv/extenv-env-overload.rs
new file mode 100644
index 00000000000..b82bb2fe966
--- /dev/null
+++ b/tests/ui/extenv/extenv-env-overload.rs
@@ -0,0 +1,9 @@
+// run-pass
+// rustc-env:MY_VAR=tadam
+// compile-flags: --env MY_VAR=123abc -Zunstable-options
+
+// This test ensures that variables provided with `--env` take precedence over
+// variables from environment.
+fn main() {
+    assert_eq!(env!("MY_VAR"), "123abc");
+}
diff --git a/tests/ui/extenv/extenv-env.rs b/tests/ui/extenv/extenv-env.rs
new file mode 100644
index 00000000000..9fda52b8941
--- /dev/null
+++ b/tests/ui/extenv/extenv-env.rs
@@ -0,0 +1,5 @@
+// compile-flags: --env FOO=123abc -Zunstable-options
+// run-pass
+fn main() {
+    assert_eq!(env!("FOO"), "123abc");
+}
diff --git a/tests/ui/extenv/extenv-not-env.rs b/tests/ui/extenv/extenv-not-env.rs
new file mode 100644
index 00000000000..d6c4a43b003
--- /dev/null
+++ b/tests/ui/extenv/extenv-not-env.rs
@@ -0,0 +1,7 @@
+// run-pass
+// rustc-env:MY_ENV=/
+// Ensures that variables not defined through `--env` are still available.
+
+fn main() {
+    assert!(!env!("MY_ENV").is_empty());
+}
diff --git a/tests/ui/feature-gates/env-flag.rs b/tests/ui/feature-gates/env-flag.rs
new file mode 100644
index 00000000000..9dfda2584fb
--- /dev/null
+++ b/tests/ui/feature-gates/env-flag.rs
@@ -0,0 +1,3 @@
+// compile-flags: --env A=B
+
+fn main() {}
diff --git a/tests/ui/feature-gates/env-flag.stderr b/tests/ui/feature-gates/env-flag.stderr
new file mode 100644
index 00000000000..5cb18cef9fb
--- /dev/null
+++ b/tests/ui/feature-gates/env-flag.stderr
@@ -0,0 +1,2 @@
+error: the `-Z unstable-options` flag must also be passed to enable the flag `env`
+
diff --git a/tests/ui/hygiene/unpretty-debug.stdout b/tests/ui/hygiene/unpretty-debug.stdout
index 51c21043db8..3d686f95df9 100644
--- a/tests/ui/hygiene/unpretty-debug.stdout
+++ b/tests/ui/hygiene/unpretty-debug.stdout
@@ -8,7 +8,7 @@
 #![feature /* 0#0 */(no_core)]
 #![no_core /* 0#0 */]
 
-macro_rules! foo /* 0#0 */ { ($x : ident) => { y + $x } }
+macro_rules! foo /* 0#0 */ { ($x: ident) => { y + $x } }
 
 fn bar /* 0#0 */() {
     let x /* 0#0 */ = 1;
diff --git a/tests/ui/infinite/issue-41731-infinite-macro-print.stderr b/tests/ui/infinite/issue-41731-infinite-macro-print.stderr
index e30b2039d69..71510816d0b 100644
--- a/tests/ui/infinite/issue-41731-infinite-macro-print.stderr
+++ b/tests/ui/infinite/issue-41731-infinite-macro-print.stderr
@@ -14,13 +14,13 @@ LL |     stack!("overflow");
    |     ^^^^^^^^^^^^^^^^^^
    |
    = note: expanding `stack! { "overflow" }`
-   = note: to `print! (stack! ("overflow")) ;`
+   = note: to `print! (stack! ("overflow"));`
    = note: expanding `print! { stack! ("overflow") }`
-   = note: to `{ $crate :: io :: _print($crate :: format_args! (stack! ("overflow"))) ; }`
+   = note: to `{ $crate :: io :: _print($crate :: format_args! (stack! ("overflow"))); }`
    = note: expanding `stack! { "overflow" }`
-   = note: to `print! (stack! ("overflow")) ;`
+   = note: to `print! (stack! ("overflow"));`
    = note: expanding `print! { stack! ("overflow") }`
-   = note: to `{ $crate :: io :: _print($crate :: format_args! (stack! ("overflow"))) ; }`
+   = note: to `{ $crate :: io :: _print($crate :: format_args! (stack! ("overflow"))); }`
 
 error: format argument must be a string literal
   --> $DIR/issue-41731-infinite-macro-print.rs:14:5
diff --git a/tests/ui/infinite/issue-41731-infinite-macro-println.stderr b/tests/ui/infinite/issue-41731-infinite-macro-println.stderr
index 66b466dafa0..645176d45cb 100644
--- a/tests/ui/infinite/issue-41731-infinite-macro-println.stderr
+++ b/tests/ui/infinite/issue-41731-infinite-macro-println.stderr
@@ -14,13 +14,13 @@ LL |     stack!("overflow");
    |     ^^^^^^^^^^^^^^^^^^
    |
    = note: expanding `stack! { "overflow" }`
-   = note: to `println! (stack! ("overflow")) ;`
+   = note: to `println! (stack! ("overflow"));`
    = note: expanding `println! { stack! ("overflow") }`
-   = note: to `{ $crate :: io :: _print($crate :: format_args_nl! (stack! ("overflow"))) ; }`
+   = note: to `{ $crate :: io :: _print($crate :: format_args_nl! (stack! ("overflow"))); }`
    = note: expanding `stack! { "overflow" }`
-   = note: to `println! (stack! ("overflow")) ;`
+   = note: to `println! (stack! ("overflow"));`
    = note: expanding `println! { stack! ("overflow") }`
-   = note: to `{ $crate :: io :: _print($crate :: format_args_nl! (stack! ("overflow"))) ; }`
+   = note: to `{ $crate :: io :: _print($crate :: format_args_nl! (stack! ("overflow"))); }`
 
 error: format argument must be a string literal
   --> $DIR/issue-41731-infinite-macro-println.rs:14:5
diff --git a/tests/ui/macros/stringify.rs b/tests/ui/macros/stringify.rs
index c0eb7f01fdb..d65f7a8ea8c 100644
--- a/tests/ui/macros/stringify.rs
+++ b/tests/ui/macros/stringify.rs
@@ -59,19 +59,13 @@ fn test_block() {
     c1!(block, [ {} ], "{}");
     c1!(block, [ { true } ], "{ true }");
     c1!(block, [ { return } ], "{ return }");
-    c2!(block, [ {
-            return;
-        } ],
-        "{ return; }",
-        "{ return ; }"
-    );
-    c2!(block,
+    c1!(block, [ { return; } ], "{ return; }");
+    c1!(block,
         [ {
             let _;
             true
         } ],
-        "{ let _; true }",
-        "{ let _ ; true }"
+        "{ let _; true }"
     );
 }
 
@@ -88,17 +82,18 @@ fn test_expr() {
 
     // ExprKind::Call
     c1!(expr, [ f() ], "f()");
-    c2!(expr, [ f::<u8>() ], "f::<u8>()", "f :: < u8 > ()");
-    c2!(expr, [ f::<1>() ], "f::<1>()", "f :: < 1 > ()");
-    c2!(expr, [ f::<'a, u8, 1>() ], "f::<'a, u8, 1>()", "f :: < 'a, u8, 1 > ()");
+    c1!(expr, [ f::<u8>() ], "f::<u8>()");
+    c2!(expr, [ f ::  < u8>( ) ], "f::<u8>()", "f :: < u8>()");
+    c1!(expr, [ f::<1>() ], "f::<1>()");
+    c1!(expr, [ f::<'a, u8, 1>() ], "f::<'a, u8, 1>()");
     c1!(expr, [ f(true) ], "f(true)");
     c2!(expr, [ f(true,) ], "f(true)", "f(true,)");
-    c2!(expr, [ ()() ], "()()", "() ()");
+    c1!(expr, [ ()() ], "()()");
 
     // ExprKind::MethodCall
     c1!(expr, [ x.f() ], "x.f()");
-    c2!(expr, [ x.f::<u8>() ], "x.f::<u8>()", "x.f :: < u8 > ()");
-    c2!(expr, [ x.collect::<Vec<_>>() ], "x.collect::<Vec<_>>()", "x.collect :: < Vec < _ >> ()");
+    c1!(expr, [ x.f::<u8>() ], "x.f::<u8>()");
+    c1!(expr, [ x.collect::<Vec<_>>() ], "x.collect::<Vec<_>>()");
 
     // ExprKind::Tup
     c1!(expr, [ () ], "()");
@@ -110,18 +105,14 @@ fn test_expr() {
     c1!(expr, [ true || false ], "true || false");
     c1!(expr, [ true || false && false ], "true || false && false");
     c1!(expr, [ a < 1 && 2 < b && c > 3 && 4 > d ], "a < 1 && 2 < b && c > 3 && 4 > d");
-    c2!(expr, [ a & b & !c ], "a & b & !c", "a & b &! c"); // FIXME
-    c2!(expr,
-        [ a + b * c - d + -1 * -2 - -3],
-        "a + b * c - d + -1 * -2 - -3",
-        "a + b * c - d + - 1 * - 2 - - 3"
-    );
-    c2!(expr, [ x = !y ], "x = !y", "x =! y"); // FIXME
+    c2!(expr, [ a & b & !c ], "a & b & !c", "a & b &!c"); // FIXME
+    c1!(expr, [ a + b * c - d + -1 * -2 - -3], "a + b * c - d + -1 * -2 - -3");
+    c2!(expr, [ x = !y ], "x = !y", "x =!y"); // FIXME
 
     // ExprKind::Unary
-    c2!(expr, [ *expr ], "*expr", "* expr");
-    c2!(expr, [ !expr ], "!expr", "! expr");
-    c2!(expr, [ -expr ], "-expr", "- expr");
+    c1!(expr, [ *expr ], "*expr");
+    c1!(expr, [ !expr ], "!expr");
+    c1!(expr, [ -expr ], "-expr");
 
     // ExprKind::Lit
     c1!(expr, [ 'x' ], "'x'");
@@ -130,7 +121,7 @@ fn test_expr() {
 
     // ExprKind::Cast
     c1!(expr, [ expr as T ], "expr as T");
-    c2!(expr, [ expr as T<u8> ], "expr as T<u8>", "expr as T < u8 >");
+    c1!(expr, [ expr as T<u8> ], "expr as T<u8>");
 
     // ExprKind::Type: there is no syntax for type ascription.
 
@@ -139,12 +130,8 @@ fn test_expr() {
 
     // ExprKind::If
     c1!(expr, [ if true {} ], "if true {}");
-    c2!(expr, [ if !true {} ], "if !true {}", "if! true {}"); // FIXME
-    c2!(expr,
-        [ if ::std::blah() { } else { } ],
-        "if ::std::blah() {} else {}",
-        "if :: std :: blah() {} else {}"
-    );
+    c2!(expr, [ if !true {} ], "if !true {}", "if!true {}"); // FIXME
+    c1!(expr, [ if ::std::blah() { } else { } ], "if ::std::blah() {} else {}");
     c1!(expr, [ if let true = true {} else {} ], "if let true = true {} else {}");
     c1!(expr,
         [ if true {
@@ -159,7 +146,7 @@ fn test_expr() {
         } ],
         "if true {} else if false {} else {}"
     );
-    c2!(expr,
+    c1!(expr,
         [ if true {
             return;
         } else if false {
@@ -167,22 +154,21 @@ fn test_expr() {
         } else {
             0
         } ],
-        "if true { return; } else if false { 0 } else { 0 }",
-        "if true { return ; } else if false { 0 } else { 0 }"
+        "if true { return; } else if false { 0 } else { 0 }"
     );
 
     // ExprKind::While
     c1!(expr, [ while true {} ], "while true {}");
-    c2!(expr, [ 'a: while true {} ], "'a: while true {}", "'a : while true {}");
+    c1!(expr, [ 'a: while true {} ], "'a: while true {}");
     c1!(expr, [ while let true = true {} ], "while let true = true {}");
 
     // ExprKind::ForLoop
     c1!(expr, [ for _ in x {} ], "for _ in x {}");
-    c2!(expr, [ 'a: for _ in x {} ], "'a: for _ in x {}", "'a : for _ in x {}");
+    c1!(expr, [ 'a: for _ in x {} ], "'a: for _ in x {}");
 
     // ExprKind::Loop
     c1!(expr, [ loop {} ], "loop {}");
-    c2!(expr, [ 'a: loop {} ], "'a: loop {}", "'a : loop {}");
+    c1!(expr, [ 'a: loop {} ], "'a: loop {}");
 
     // ExprKind::Match
     c1!(expr, [ match self {} ], "match self {}");
@@ -202,8 +188,8 @@ fn test_expr() {
 
     // ExprKind::Closure
     c1!(expr, [ || {} ], "|| {}");
-    c2!(expr, [ |x| {} ], "|x| {}", "| x | {}");
-    c2!(expr, [ |x: u8| {} ], "|x: u8| {}", "| x : u8 | {}");
+    c1!(expr, [ |x| {} ], "|x| {}");
+    c1!(expr, [ |x: u8| {} ], "|x: u8| {}");
     c1!(expr, [ || () ], "|| ()");
     c1!(expr, [ move || self ], "move || self");
     c1!(expr, [ async || self ], "async || self");
@@ -218,7 +204,7 @@ fn test_expr() {
     // ExprKind::Block
     c1!(expr, [ {} ], "{}");
     c1!(expr, [ unsafe {} ], "unsafe {}");
-    c2!(expr, [ 'a: {} ], "'a: {}", "'a : {}");
+    c1!(expr, [ 'a: {} ], "'a: {}");
     c1!(expr, [ #[attr] {} ], "#[attr] {}");
     c2!(expr,
         [
@@ -229,7 +215,7 @@ fn test_expr() {
         "{\n\
         \x20   #![attr]\n\
         }",
-        "{ #! [attr] }"
+        "{ #![attr] }"
     );
 
     // ExprKind::Async
@@ -253,34 +239,35 @@ fn test_expr() {
     c1!(expr, [ expr.0 ], "expr.0");
 
     // ExprKind::Index
-    c2!(expr, [ expr[true] ], "expr[true]", "expr [true]");
+    c1!(expr, [ expr[true] ], "expr[true]");
 
     // ExprKind::Range
     c1!(expr, [ .. ], "..");
-    c2!(expr, [ ..hi ], "..hi", ".. hi");
-    c2!(expr, [ lo.. ], "lo..", "lo ..");
-    c2!(expr, [ lo..hi ], "lo..hi", "lo .. hi");
-    c2!(expr, [ ..=hi ], "..=hi", "..= hi");
-    c2!(expr, [ lo..=hi ], "lo..=hi", "lo ..= hi");
-    c2!(expr, [ -2..=-1 ], "-2..=-1", "- 2 ..= - 1");
+    c1!(expr, [ ..hi ], "..hi");
+    c1!(expr, [ lo.. ], "lo..");
+    c1!(expr, [ lo..hi ], "lo..hi");
+    c2!(expr, [ lo .. hi ], "lo..hi", "lo .. hi");
+    c1!(expr, [ ..=hi ], "..=hi");
+    c1!(expr, [ lo..=hi ], "lo..=hi");
+    c1!(expr, [ -2..=-1 ], "-2..=-1");
 
     // ExprKind::Underscore
     // FIXME: todo
 
     // ExprKind::Path
     c1!(expr, [ thing ], "thing");
-    c2!(expr, [ m::thing ], "m::thing", "m :: thing");
-    c2!(expr, [ self::thing ], "self::thing", "self :: thing");
-    c2!(expr, [ crate::thing ], "crate::thing", "crate :: thing");
-    c2!(expr, [ Self::thing ], "Self::thing", "Self :: thing");
-    c2!(expr, [ <Self as T>::thing ], "<Self as T>::thing", "< Self as T > :: thing");
-    c2!(expr, [ Self::<'static> ], "Self::<'static>", "Self :: < 'static >");
+    c1!(expr, [ m::thing ], "m::thing");
+    c1!(expr, [ self::thing ], "self::thing");
+    c1!(expr, [ crate::thing ], "crate::thing");
+    c1!(expr, [ Self::thing ], "Self::thing");
+    c1!(expr, [ <Self as T>::thing ], "<Self as T>::thing");
+    c1!(expr, [ Self::<'static> ], "Self::<'static>");
 
     // ExprKind::AddrOf
-    c2!(expr, [ &expr ], "&expr", "& expr");
-    c2!(expr, [ &mut expr ], "&mut expr", "& mut expr");
-    c2!(expr, [ &raw const expr ], "&raw const expr", "& raw const expr");
-    c2!(expr, [ &raw mut expr ], "&raw mut expr", "& raw mut expr");
+    c1!(expr, [ &expr ], "&expr");
+    c1!(expr, [ &mut expr ], "&mut expr");
+    c1!(expr, [ &raw const expr ], "&raw const expr");
+    c1!(expr, [ &raw mut expr ], "&raw mut expr");
 
     // ExprKind::Break
     c1!(expr, [ break ], "break");
@@ -301,38 +288,30 @@ fn test_expr() {
     // ExprKind::OffsetOf: untestable because this test works pre-expansion.
 
     // ExprKind::MacCall
-    c2!(expr, [ mac!(...) ], "mac!(...)", "mac! (...)");
-    c2!(expr, [ mac![...] ], "mac![...]", "mac! [...]");
+    c1!(expr, [ mac!(...) ], "mac!(...)");
+    c1!(expr, [ mac![...] ], "mac![...]");
     c1!(expr, [ mac! { ... } ], "mac! { ... }");
 
     // ExprKind::Struct
     c1!(expr, [ Struct {} ], "Struct {}");
-    c2!(expr,
-        [ <Struct as Trait>::Type {} ],
-        "<Struct as Trait>::Type {}",
-        "< Struct as Trait > :: Type {}"
-    );
+    c1!(expr, [ <Struct as Trait>::Type {} ], "<Struct as Trait>::Type {}");
     c1!(expr, [ Struct { .. } ], "Struct { .. }");
-    c2!(expr, [ Struct { ..base } ], "Struct { ..base }", "Struct { .. base }");
+    c1!(expr, [ Struct { ..base } ], "Struct { ..base }");
     c1!(expr, [ Struct { x } ], "Struct { x }");
     c1!(expr, [ Struct { x, .. } ], "Struct { x, .. }");
-    c2!(expr, [ Struct { x, ..base } ], "Struct { x, ..base }", "Struct { x, .. base }");
-    c2!(expr, [ Struct { x: true } ], "Struct { x: true }", "Struct { x : true }");
-    c2!(expr, [ Struct { x: true, .. } ], "Struct { x: true, .. }", "Struct { x : true, .. }");
-    c2!(expr,
-        [ Struct { x: true, ..base } ],
-        "Struct { x: true, ..base }",
-        "Struct { x : true, .. base }"
-    );
+    c1!(expr, [ Struct { x, ..base } ], "Struct { x, ..base }");
+    c1!(expr, [ Struct { x: true } ], "Struct { x: true }");
+    c1!(expr, [ Struct { x: true, .. } ], "Struct { x: true, .. }");
+    c1!(expr, [ Struct { x: true, ..base } ], "Struct { x: true, ..base }");
 
     // ExprKind::Repeat
-    c2!(expr, [ [(); 0] ], "[(); 0]", "[() ; 0]");
+    c1!(expr, [ [(); 0] ], "[(); 0]");
 
     // ExprKind::Paren
     c1!(expr, [ (expr) ], "(expr)");
 
     // ExprKind::Try
-    c2!(expr, [ expr? ], "expr?", "expr ?");
+    c1!(expr, [ expr? ], "expr?");
 
     // ExprKind::Yield
     c1!(expr, [ yield ], "yield");
@@ -356,51 +335,42 @@ fn test_expr() {
 #[test]
 fn test_item() {
     // ItemKind::ExternCrate
-    c2!(item, [ extern crate std; ], "extern crate std;", "extern crate std ;");
-    c2!(item,
-        [ pub extern crate self as std; ],
-        "pub extern crate self as std;",
-        "pub extern crate self as std ;"
-    );
+    c1!(item, [ extern crate std; ], "extern crate std;");
+    c1!(item, [ pub extern crate self as std; ], "pub extern crate self as std;");
 
     // ItemKind::Use
     c2!(item,
         [ pub use crate::{a, b::c}; ],
         "pub use crate::{a, b::c};",
-        "pub use crate :: { a, b :: c } ;"
+        "pub use crate::{ a, b::c };" // FIXME
     );
-    c2!(item, [ pub use A::*; ], "pub use A::*;", "pub use A :: * ;");
+    c1!(item, [ pub use A::*; ], "pub use A::*;");
 
     // ItemKind::Static
-    c2!(item, [ pub static S: () = {}; ], "pub static S: () = {};", "pub static S : () = {} ;");
-    c2!(item, [ static mut S: () = {}; ], "static mut S: () = {};", "static mut S : () = {} ;");
-    c2!(item, [ static S: (); ], "static S: ();", "static S : () ;");
-    c2!(item, [ static mut S: (); ], "static mut S: ();", "static mut S : () ;");
+    c1!(item, [ pub static S: () = {}; ], "pub static S: () = {};");
+    c1!(item, [ static mut S: () = {}; ], "static mut S: () = {};");
+    c1!(item, [ static S: (); ], "static S: ();");
+    c1!(item, [ static mut S: (); ], "static mut S: ();");
 
     // ItemKind::Const
-    c2!(item, [ pub const S: () = {}; ], "pub const S: () = {};", "pub const S : () = {} ;");
-    c2!(item, [ const S: (); ], "const S: ();", "const S : () ;");
+    c1!(item, [ pub const S: () = {}; ], "pub const S: () = {};");
+    c1!(item, [ const S: (); ], "const S: ();");
 
     // ItemKind::Fn
     c1!(item,
         [ pub default const async unsafe extern "C" fn f() {} ],
         "pub default const async unsafe extern \"C\" fn f() {}"
     );
-    c2!(item,
-        [ fn g<T>(t: Vec<Vec<Vec<T>>>) {} ],
-        "fn g<T>(t: Vec<Vec<Vec<T>>>) {}",
-        "fn g < T > (t : Vec < Vec < Vec < T >> >) {}"
-    );
-    c2!(item,
+    c1!(item, [ fn g<T>(t: Vec<Vec<Vec<T>>>) {} ], "fn g<T>(t: Vec<Vec<Vec<T>>>) {}");
+    c1!(item,
         [ fn h<'a>(t: &'a Vec<Cell<dyn D>>) {} ],
-        "fn h<'a>(t: &'a Vec<Cell<dyn D>>) {}",
-        "fn h < 'a > (t : & 'a Vec < Cell < dyn D >>) {}"
+        "fn h<'a>(t: &'a Vec<Cell<dyn D>>) {}"
     );
 
     // ItemKind::Mod
-    c2!(item, [ pub mod m; ], "pub mod m;", "pub mod m ;");
+    c1!(item, [ pub mod m; ], "pub mod m;");
     c1!(item, [ mod m {} ], "mod m {}");
-    c2!(item, [ unsafe mod m; ], "unsafe mod m;", "unsafe mod m ;");
+    c1!(item, [ unsafe mod m; ], "unsafe mod m;");
     c1!(item, [ unsafe mod m {} ], "unsafe mod m {}");
 
     // ItemKind::ForeignMod
@@ -423,7 +393,7 @@ fn test_item() {
             = T;
         ],
         "pub default type Type<'a>: Bound where Self: 'a = T;",
-        "pub default type Type < 'a > : Bound where Self : 'a, = T ;"
+        "pub default type Type<'a>: Bound where Self: 'a, = T;"
     );
 
     // ItemKind::Enum
@@ -456,13 +426,13 @@ fn test_item() {
         \x20       t: T,\n\
         \x20   },\n\
         }",
-        "enum Enum < T > where T : 'a, { Unit, Tuple(T), Struct { t : T }, }"
+        "enum Enum<T> where T: 'a, { Unit, Tuple(T), Struct { t: T }, }"
     );
 
     // ItemKind::Struct
-    c2!(item, [ pub struct Unit; ], "pub struct Unit;", "pub struct Unit ;");
-    c2!(item, [ struct Tuple(); ], "struct Tuple();", "struct Tuple() ;");
-    c2!(item, [ struct Tuple(T); ], "struct Tuple(T);", "struct Tuple(T) ;");
+    c1!(item, [ pub struct Unit; ], "pub struct Unit;");
+    c1!(item, [ struct Tuple(); ], "struct Tuple();");
+    c1!(item, [ struct Tuple(T); ], "struct Tuple(T);");
     c1!(item, [ struct Struct {} ], "struct Struct {}");
     c2!(item,
         [
@@ -476,7 +446,7 @@ fn test_item() {
         "struct Struct<T> where T: 'a {\n\
         \x20   t: T,\n\
         }",
-        "struct Struct < T > where T : 'a, { t : T, }"
+        "struct Struct<T> where T: 'a, { t: T, }"
     );
 
     // ItemKind::Union
@@ -490,7 +460,7 @@ fn test_item() {
         "union Union<T> where T: 'a {\n\
         \x20   t: T,\n\
         }",
-        "union Union < T > where T : 'a { t : T, }"
+        "union Union<T> where T: 'a { t: T, }"
     );
 
     // ItemKind::Trait
@@ -504,30 +474,25 @@ fn test_item() {
             }
         ],
         "trait Trait<'a>: Sized where Self: 'a {}",
-        "trait Trait < 'a > : Sized where Self : 'a, {}"
+        "trait Trait<'a>: Sized where Self: 'a, {}"
     );
 
     // ItemKind::TraitAlias
-    c2!(item,
+    c1!(item,
         [ pub trait Trait<T> = Sized where T: 'a; ],
-        "pub trait Trait<T> = Sized where T: 'a;",
-        "pub trait Trait < T > = Sized where T : 'a ;"
+        "pub trait Trait<T> = Sized where T: 'a;"
     );
 
     // ItemKind::Impl
     c1!(item, [ pub impl Struct {} ], "pub impl Struct {}");
-    c2!(item, [ impl<T> Struct<T> {} ], "impl<T> Struct<T> {}", "impl < T > Struct < T > {}");
+    c1!(item, [ impl<T> Struct<T> {} ], "impl<T> Struct<T> {}");
     c1!(item, [ pub impl Trait for Struct {} ], "pub impl Trait for Struct {}");
-    c2!(item,
-        [ impl<T> const Trait for T {} ],
-        "impl<T> const Trait for T {}",
-        "impl < T > const Trait for T {}"
-    );
-    c2!(item, [ impl ~const Struct {} ], "impl ~const Struct {}", "impl ~ const Struct {}");
+    c1!(item, [ impl<T> const Trait for T {} ], "impl<T> const Trait for T {}");
+    c1!(item, [ impl ~const Struct {} ], "impl ~const Struct {}");
 
     // ItemKind::MacCall
-    c2!(item, [ mac!(...); ], "mac!(...);", "mac! (...) ;");
-    c2!(item, [ mac![...]; ], "mac![...];", "mac! [...] ;");
+    c1!(item, [ mac!(...); ], "mac!(...);");
+    c1!(item, [ mac![...]; ], "mac![...];");
     c1!(item, [ mac! { ... } ], "mac! { ... }");
 
     // ItemKind::MacroDef
@@ -537,7 +502,7 @@ fn test_item() {
                 () => {};
             }
         ],
-        "macro_rules! stringify { () => {} ; }"
+        "macro_rules! stringify { () => {}; }"
     );
     c2!(item,
         [ pub macro stringify() {} ],
@@ -551,7 +516,7 @@ fn test_meta() {
     c1!(meta, [ k ], "k");
     c1!(meta, [ k = "v" ], "k = \"v\"");
     c1!(meta, [ list(k1, k2 = "v") ], "list(k1, k2 = \"v\")");
-    c2!(meta, [ serde::k ], "serde::k", "serde :: k");
+    c1!(meta, [ serde::k ], "serde::k");
 }
 
 #[test]
@@ -568,42 +533,35 @@ fn test_pat() {
 
     // PatKind::Struct
     c1!(pat, [ Struct {} ], "Struct {}");
-    c2!(pat, [ Struct::<u8> {} ], "Struct::<u8> {}", "Struct :: < u8 > {}");
-    c2!(pat, [ Struct::<'static> {} ], "Struct::<'static> {}", "Struct :: < 'static > {}");
+    c1!(pat, [ Struct::<u8> {} ], "Struct::<u8> {}");
+    c2!(pat, [ Struct ::< u8 > {} ], "Struct::<u8> {}", "Struct ::< u8 > {}");
+    c1!(pat, [ Struct::<'static> {} ], "Struct::<'static> {}");
     c1!(pat, [ Struct { x } ], "Struct { x }");
-    c2!(pat, [ Struct { x: _x } ], "Struct { x: _x }", "Struct { x : _x }");
+    c1!(pat, [ Struct { x: _x } ], "Struct { x: _x }");
     c1!(pat, [ Struct { .. } ], "Struct { .. }");
     c1!(pat, [ Struct { x, .. } ], "Struct { x, .. }");
-    c2!(pat, [ Struct { x: _x, .. } ], "Struct { x: _x, .. }", "Struct { x : _x, .. }");
-    c2!(pat,
-        [ <Struct as Trait>::Type {} ],
-        "<Struct as Trait>::Type {}",
-        "< Struct as Trait > :: Type {}"
-    );
+    c1!(pat, [ Struct { x: _x, .. } ], "Struct { x: _x, .. }");
+    c1!(pat, [ <Struct as Trait>::Type {} ], "<Struct as Trait>::Type {}");
 
     // PatKind::TupleStruct
     c1!(pat, [ Tuple() ], "Tuple()");
-    c2!(pat, [ Tuple::<u8>() ], "Tuple::<u8>()", "Tuple :: < u8 > ()");
-    c2!(pat, [ Tuple::<'static>() ], "Tuple::<'static>()", "Tuple :: < 'static > ()");
+    c1!(pat, [ Tuple::<u8>() ], "Tuple::<u8>()");
+    c1!(pat, [ Tuple::<'static>() ], "Tuple::<'static>()");
     c1!(pat, [ Tuple(x) ], "Tuple(x)");
     c1!(pat, [ Tuple(..) ], "Tuple(..)");
     c1!(pat, [ Tuple(x, ..) ], "Tuple(x, ..)");
-    c2!(pat,
-        [ <Struct as Trait>::Type() ],
-        "<Struct as Trait>::Type()",
-        "< Struct as Trait > :: Type()"
-    );
+    c1!(pat, [ <Struct as Trait>::Type() ], "<Struct as Trait>::Type()");
 
     // PatKind::Or
     c1!(pat, [ true | false ], "true | false");
     c2!(pat, [ | true ], "true", "| true");
-    c2!(pat, [ |true| false ], "true | false", "| true | false");
+    c2!(pat, [ |true| false ], "true | false", "|true| false");
 
     // PatKind::Path
-    c2!(pat, [ crate::Path ], "crate::Path", "crate :: Path");
-    c2!(pat, [ Path::<u8> ], "Path::<u8>", "Path :: < u8 >");
-    c2!(pat, [ Path::<'static> ], "Path::<'static>", "Path :: < 'static >");
-    c2!(pat, [ <Struct as Trait>::Type ], "<Struct as Trait>::Type", "< Struct as Trait > :: Type");
+    c1!(pat, [ crate::Path ], "crate::Path");
+    c1!(pat, [ Path::<u8> ], "Path::<u8>");
+    c1!(pat, [ Path::<'static> ], "Path::<'static>");
+    c1!(pat, [ <Struct as Trait>::Type ], "<Struct as Trait>::Type");
 
     // PatKind::Tuple
     c1!(pat, [ () ], "()");
@@ -614,18 +572,18 @@ fn test_pat() {
     c1!(pat, [ box pat ], "box pat");
 
     // PatKind::Ref
-    c2!(pat, [ &pat ], "&pat", "& pat");
-    c2!(pat, [ &mut pat ], "&mut pat", "& mut pat");
+    c1!(pat, [ &pat ], "&pat");
+    c1!(pat, [ &mut pat ], "&mut pat");
 
     // PatKind::Lit
     c1!(pat, [ 1_000_i8 ], "1_000_i8");
 
     // PatKind::Range
-    c2!(pat, [ ..1 ], "..1", ".. 1");
-    c2!(pat, [ 0.. ], "0..", "0 ..");
-    c2!(pat, [ 0..1 ], "0..1", "0 .. 1");
-    c2!(pat, [ 0..=1 ], "0..=1", "0 ..= 1");
-    c2!(pat, [ -2..=-1 ], "-2..=-1", "- 2 ..= - 1");
+    c1!(pat, [ ..1 ], "..1");
+    c1!(pat, [ 0.. ], "0..");
+    c1!(pat, [ 0..1 ], "0..1");
+    c1!(pat, [ 0..=1 ], "0..=1");
+    c1!(pat, [ -2..=-1 ], "-2..=-1");
 
     // PatKind::Slice
     c1!(pat, [ [] ], "[]");
@@ -644,20 +602,20 @@ fn test_pat() {
     c1!(pat, [ (pat) ], "(pat)");
 
     // PatKind::MacCall
-    c2!(pat, [ mac!(...) ], "mac!(...)", "mac! (...)");
-    c2!(pat, [ mac![...] ], "mac![...]", "mac! [...]");
+    c1!(pat, [ mac!(...) ], "mac!(...)");
+    c1!(pat, [ mac![...] ], "mac![...]");
     c1!(pat, [ mac! { ... } ], "mac! { ... }");
 }
 
 #[test]
 fn test_path() {
     c1!(path, [ thing ], "thing");
-    c2!(path, [ m::thing ], "m::thing", "m :: thing");
-    c2!(path, [ self::thing ], "self::thing", "self :: thing");
-    c2!(path, [ crate::thing ], "crate::thing", "crate :: thing");
-    c2!(path, [ Self::thing ], "Self::thing", "Self :: thing");
-    c2!(path, [ Self<'static> ], "Self<'static>", "Self < 'static >");
-    c2!(path, [ Self::<'static> ], "Self<'static>", "Self :: < 'static >");
+    c1!(path, [ m::thing ], "m::thing");
+    c1!(path, [ self::thing ], "self::thing");
+    c1!(path, [ crate::thing ], "crate::thing");
+    c1!(path, [ Self::thing ], "Self::thing");
+    c1!(path, [ Self<'static> ], "Self<'static>");
+    c2!(path, [ Self::<'static> ], "Self<'static>", "Self::<'static>");
     c1!(path, [ Self() ], "Self()");
     c1!(path, [ Self() -> () ], "Self() -> ()");
 }
@@ -667,16 +625,16 @@ fn test_stmt() {
     // StmtKind::Local
     c2!(stmt, [ let _ ], "let _;", "let _");
     c2!(stmt, [ let x = true ], "let x = true;", "let x = true");
-    c2!(stmt, [ let x: bool = true ], "let x: bool = true;", "let x : bool = true");
+    c2!(stmt, [ let x: bool = true ], "let x: bool = true;", "let x: bool = true");
     c2!(stmt, [ let (a, b) = (1, 2) ], "let (a, b) = (1, 2);", "let(a, b) = (1, 2)"); // FIXME
     c2!(stmt,
         [ let (a, b): (u32, u32) = (1, 2) ],
         "let (a, b): (u32, u32) = (1, 2);",
-        "let(a, b) : (u32, u32) = (1, 2)"
+        "let(a, b): (u32, u32) = (1, 2)" // FIXME
     );
 
     // StmtKind::Item
-    c2!(stmt, [ struct S; ], "struct S;", "struct S ;");
+    c1!(stmt, [ struct S; ], "struct S;");
     c1!(stmt, [ struct S {} ], "struct S {}");
 
     // StmtKind::Expr
@@ -689,8 +647,8 @@ fn test_stmt() {
     c1!(stmt, [ ; ], ";");
 
     // StmtKind::MacCall
-    c2!(stmt, [ mac!(...) ], "mac!(...)", "mac! (...)");
-    c2!(stmt, [ mac![...] ], "mac![...]", "mac! [...]");
+    c1!(stmt, [ mac!(...) ], "mac!(...)");
+    c1!(stmt, [ mac![...] ], "mac![...]");
     c1!(stmt, [ mac! { ... } ], "mac! { ... }");
 }
 
@@ -700,26 +658,27 @@ fn test_ty() {
     c1!(ty, [ [T] ], "[T]");
 
     // TyKind::Array
-    c2!(ty, [ [T; 0] ], "[T; 0]", "[T ; 0]");
+    c1!(ty, [ [T; 0] ], "[T; 0]");
 
     // TyKind::Ptr
-    c2!(ty, [ *const T ], "*const T", "* const T");
-    c2!(ty, [ *mut T ], "*mut T", "* mut T");
+    c1!(ty, [ *const T ], "*const T");
+    c1!(ty, [ *mut T ], "*mut T");
 
     // TyKind::Ref
-    c2!(ty, [ &T ], "&T", "& T");
-    c2!(ty, [ &mut T ], "&mut T", "& mut T");
-    c2!(ty, [ &'a T ], "&'a T", "& 'a T");
-    c2!(ty, [ &'a mut [T] ], "&'a mut [T]", "& 'a mut [T]");
-    c2!(ty, [ &A<B<C<D<E>>>> ], "&A<B<C<D<E>>>>", "& A < B < C < D < E >> >>");
+    c1!(ty, [ &T ], "&T");
+    c1!(ty, [ &mut T ], "&mut T");
+    c1!(ty, [ &'a T ], "&'a T");
+    c1!(ty, [ &'a mut [T] ], "&'a mut [T]");
+    c1!(ty, [ &A<B<C<D<E>>>> ], "&A<B<C<D<E>>>>");
+    c2!(ty, [ &A<B<C<D<E> > > > ], "&A<B<C<D<E>>>>", "&A<B<C<D<E> > > >");
 
     // TyKind::BareFn
     c1!(ty, [ fn() ], "fn()");
     c1!(ty, [ fn() -> () ], "fn() -> ()");
     c1!(ty, [ fn(u8) ], "fn(u8)");
-    c2!(ty, [ fn(x: u8) ], "fn(x: u8)", "fn(x : u8)");
-    c2!(ty, [ for<> fn() ], "fn()", "for < > fn()");
-    c2!(ty, [ for<'a> fn() ], "for<'a> fn()", "for < 'a > fn()");
+    c1!(ty, [ fn(x: u8) ], "fn(x: u8)");
+    c2!(ty, [ for<> fn() ], "fn()", "for<> fn()");
+    c1!(ty, [ for<'a> fn() ], "for<'a> fn()");
 
     // TyKind::Never
     c1!(ty, [ ! ], "!");
@@ -735,28 +694,28 @@ fn test_ty() {
 
     // TyKind::Path
     c1!(ty, [ T ], "T");
-    c2!(ty, [ Ref<'a> ], "Ref<'a>", "Ref < 'a >");
-    c2!(ty, [ PhantomData<T> ], "PhantomData<T>", "PhantomData < T >");
-    c2!(ty, [ PhantomData::<T> ], "PhantomData<T>", "PhantomData :: < T >");
+    c1!(ty, [ Ref<'a> ], "Ref<'a>");
+    c1!(ty, [ PhantomData<T> ], "PhantomData<T>");
+    c2!(ty, [ PhantomData::<T> ], "PhantomData<T>", "PhantomData::<T>");
     c2!(ty, [ Fn() -> ! ], "Fn() -> !", "Fn() ->!");
     c2!(ty, [ Fn(u8) -> ! ], "Fn(u8) -> !", "Fn(u8) ->!"); // FIXME
-    c2!(ty, [ <Struct as Trait>::Type ], "<Struct as Trait>::Type", "< Struct as Trait > :: Type");
+    c1!(ty, [ <Struct as Trait>::Type ], "<Struct as Trait>::Type");
 
     // TyKind::TraitObject
     c1!(ty, [ dyn Send ], "dyn Send");
     c1!(ty, [ dyn Send + 'a ], "dyn Send + 'a");
     c1!(ty, [ dyn 'a + Send ], "dyn 'a + Send");
-    c2!(ty, [ dyn ?Sized ], "dyn ?Sized", "dyn ? Sized");
-    c2!(ty, [ dyn ~const Clone ], "dyn ~const Clone", "dyn ~ const Clone");
-    c2!(ty, [ dyn for<'a> Send ], "dyn for<'a> Send", "dyn for < 'a > Send");
+    c1!(ty, [ dyn ?Sized ], "dyn ?Sized");
+    c1!(ty, [ dyn ~const Clone ], "dyn ~const Clone");
+    c1!(ty, [ dyn for<'a> Send ], "dyn for<'a> Send");
 
     // TyKind::ImplTrait
     c1!(ty, [ impl Send ], "impl Send");
     c1!(ty, [ impl Send + 'a ], "impl Send + 'a");
     c1!(ty, [ impl 'a + Send ], "impl 'a + Send");
-    c2!(ty, [ impl ?Sized ], "impl ?Sized", "impl ? Sized");
-    c2!(ty, [ impl ~const Clone ], "impl ~const Clone", "impl ~ const Clone");
-    c2!(ty, [ impl for<'a> Send ], "impl for<'a> Send", "impl for < 'a > Send");
+    c1!(ty, [ impl ?Sized ], "impl ?Sized");
+    c1!(ty, [ impl ~const Clone ], "impl ~const Clone");
+    c1!(ty, [ impl for<'a> Send ], "impl for<'a> Send");
 
     // TyKind::Paren
     c1!(ty, [ (T) ], "(T)");
@@ -769,8 +728,8 @@ fn test_ty() {
     // TyKind::ImplicitSelf: there is no syntax for this.
 
     // TyKind::MacCall
-    c2!(ty, [ mac!(...) ], "mac!(...)", "mac! (...)");
-    c2!(ty, [ mac![...] ], "mac![...]", "mac! [...]");
+    c1!(ty, [ mac!(...) ], "mac!(...)");
+    c1!(ty, [ mac![...] ], "mac![...]");
     c1!(ty, [ mac! { ... } ], "mac! { ... }");
 
     // TyKind::Err: untestable.
@@ -791,13 +750,13 @@ fn test_vis() {
     c2!(vis, [ pub(in crate) ], "pub(in crate) ", "pub(in crate)");
     c2!(vis, [ pub(in self) ], "pub(in self) ", "pub(in self)");
     c2!(vis, [ pub(in super) ], "pub(in super) ", "pub(in super)");
-    c2!(vis, [ pub(in path::to) ], "pub(in path::to) ", "pub(in path :: to)");
-    c2!(vis, [ pub(in ::path::to) ], "pub(in ::path::to) ", "pub(in :: path :: to)");
-    c2!(vis, [ pub(in self::path::to) ], "pub(in self::path::to) ", "pub(in self :: path :: to)");
+    c2!(vis, [ pub(in path::to) ], "pub(in path::to) ", "pub(in path::to)");
+    c2!(vis, [ pub(in ::path::to) ], "pub(in ::path::to) ", "pub(in ::path::to)");
+    c2!(vis, [ pub(in self::path::to) ], "pub(in self::path::to) ", "pub(in self::path::to)");
     c2!(vis,
         [ pub(in super::path::to) ],
         "pub(in super::path::to) ",
-        "pub(in super :: path :: to)"
+        "pub(in super::path::to)"
     );
 
     // VisibilityKind::Inherited
@@ -815,7 +774,7 @@ macro_rules! p {
 
 #[test]
 fn test_punct() {
-    // For all these cases, we must preserve spaces between the tokens.
+    // For all these cases, we should preserve spaces between the tokens.
     // Otherwise, any old proc macro that parses pretty-printed code might glue
     // together tokens that shouldn't be glued.
     p!([ = = < < <= <= == == != != >= >= > > ], "= = < < <= <= == == != != >= >= > >");
@@ -828,10 +787,7 @@ fn test_punct() {
     p!([ + + += += - - -= -= * * *= *= / / /= /= ], "+ + += += - - -= -= * * *= *= / / /= /=");
     p!([ % % %= %= ^ ^ ^= ^= << << <<= <<= >> >> >>= >>= ],
         "% % %= %= ^ ^ ^= ^= << << <<= <<= >> >> >>= >>=");
-
-    // For these one we must insert spaces between adjacent tokens, again due
-    // to proc macros.
-    p!([ +! ?= |> >>@ --> <-- $$ =====> ], "+! ? = | > >> @ - -> <- - $$== == =>"); // FIXME
-    p!([ ,; ;, ** @@ $+$ >< <> ?? +== ], ", ; ;, * * @ @ $+ $> < < > ? ? += ="); // FIXME
-    p!([ :#!@|$=&*,+;*~? ], ": #! @ | $= & *, + ; * ~ ?"); // FIXME
+    p!([ +! ?= |> >>@ --> <-- $$ =====> ], "+! ?= |> >>@ --> <-- $$=====>");
+    p!([ ,; ;, ** @@ $+$ >< <> ?? +== ], ",; ;, ** @@ $+$>< <> ?? +=="); // FIXME: `$ >` -> `$>`
+    p!([ :#!@|$=&*,+;*~? ], ":#!@|$=&*,+;*~?");
 }
diff --git a/tests/ui/macros/syntax-extension-source-utils.rs b/tests/ui/macros/syntax-extension-source-utils.rs
index f41faddddf6..aa894c83910 100644
--- a/tests/ui/macros/syntax-extension-source-utils.rs
+++ b/tests/ui/macros/syntax-extension-source-utils.rs
@@ -17,7 +17,7 @@ pub fn main() {
     assert_eq!(column!(), 16);
     assert_eq!(indirect_line!(), 18);
     assert!((file!().ends_with("syntax-extension-source-utils.rs")));
-    assert_eq!(stringify!((2*3) + 5).to_string(), "(2 * 3) + 5".to_string());
+    assert_eq!(stringify!((2*3) + 5).to_string(), "(2*3) + 5".to_string());
     assert!(include!("syntax-extension-source-utils-files/includeme.\
                       fragment").to_string()
            == "victory robot 6".to_string());
@@ -32,5 +32,5 @@ pub fn main() {
     // The Windows tests are wrapped in an extra module for some reason
     assert!((m1::m2::where_am_i().ends_with("m1::m2")));
 
-    assert_eq!((35, "(2 * 3) + 5"), (line!(), stringify!((2*3) + 5)));
+    assert_eq!((35, "(2*3) + 5"), (line!(), stringify!((2*3) + 5)));
 }
diff --git a/tests/ui/macros/trace-macro.stderr b/tests/ui/macros/trace-macro.stderr
index 43272248c28..dac4cc12f84 100644
--- a/tests/ui/macros/trace-macro.stderr
+++ b/tests/ui/macros/trace-macro.stderr
@@ -5,5 +5,5 @@ LL |     println!("Hello, World!");
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: expanding `println! { "Hello, World!" }`
-   = note: to `{ $crate :: io :: _print($crate :: format_args_nl! ("Hello, World!")) ; }`
+   = note: to `{ $crate :: io :: _print($crate :: format_args_nl! ("Hello, World!")); }`
 
diff --git a/tests/ui/macros/trace_faulty_macros.stderr b/tests/ui/macros/trace_faulty_macros.stderr
index 6a89d3bfd09..81047c7a21a 100644
--- a/tests/ui/macros/trace_faulty_macros.stderr
+++ b/tests/ui/macros/trace_faulty_macros.stderr
@@ -20,7 +20,7 @@ LL |     my_faulty_macro!();
    |     ^^^^^^^^^^^^^^^^^^
    |
    = note: expanding `my_faulty_macro! {  }`
-   = note: to `my_faulty_macro! (bcd) ;`
+   = note: to `my_faulty_macro! (bcd);`
    = note: expanding `my_faulty_macro! { bcd }`
 
 error: recursion limit reached while expanding `my_recursive_macro!`
@@ -42,13 +42,13 @@ LL |     my_recursive_macro!();
    |     ^^^^^^^^^^^^^^^^^^^^^
    |
    = note: expanding `my_recursive_macro! {  }`
-   = note: to `my_recursive_macro! () ;`
+   = note: to `my_recursive_macro! ();`
    = note: expanding `my_recursive_macro! {  }`
-   = note: to `my_recursive_macro! () ;`
+   = note: to `my_recursive_macro! ();`
    = note: expanding `my_recursive_macro! {  }`
-   = note: to `my_recursive_macro! () ;`
+   = note: to `my_recursive_macro! ();`
    = note: expanding `my_recursive_macro! {  }`
-   = note: to `my_recursive_macro! () ;`
+   = note: to `my_recursive_macro! ();`
 
 error: expected expression, found pattern `A { a: a, b: 0, c: _, .. }`
   --> $DIR/trace_faulty_macros.rs:16:9
@@ -98,7 +98,7 @@ LL |     let a = pat_macro!();
    |             ^^^^^^^^^^^^
    |
    = note: expanding `pat_macro! {  }`
-   = note: to `pat_macro! (A { a : a, b : 0, c : _, .. }) ;`
+   = note: to `pat_macro! (A { a : a, b : 0, c : _, .. });`
    = note: expanding `pat_macro! { A { a : a, b : 0, c : _, .. } }`
    = note: to `A { a: a, b: 0, c: _, .. }`
 
@@ -108,7 +108,7 @@ note: trace_macro
 LL |     test!(let x = 1+1);
    |     ^^^^^^^^^^^^^^^^^^
    |
-   = note: expanding `test! { let x = 1 + 1 }`
+   = note: expanding `test! { let x = 1+1 }`
    = note: to `test! ((x, 1 + 1))`
    = note: expanding `test! { (x, 1 + 1) }`
    = note: to `let x = 1 + 1 ;`
diff --git a/tests/ui/proc-macro/allowed-attr-stmt-expr.stdout b/tests/ui/proc-macro/allowed-attr-stmt-expr.stdout
index 4f8730053ee..8459f4e6305 100644
--- a/tests/ui/proc-macro/allowed-attr-stmt-expr.stdout
+++ b/tests/ui/proc-macro/allowed-attr-stmt-expr.stdout
@@ -1,4 +1,5 @@
-PRINT-ATTR INPUT (DISPLAY): struct ItemWithSemi ;
+PRINT-ATTR INPUT (DISPLAY): struct ItemWithSemi;
+PRINT-ATTR RE-COLLECTED (DISPLAY): struct ItemWithSemi ;
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Ident {
         ident: "struct",
@@ -45,7 +46,8 @@ PRINT-ATTR INPUT (DEBUG): TokenStream [
         span: $DIR/allowed-attr-stmt-expr.rs:53:27: 53:29 (#0),
     },
 ]
-PRINT-ATTR INPUT (DISPLAY): #[expect_let] let string = "Hello, world!" ;
+PRINT-ATTR INPUT (DISPLAY): #[expect_let] let string = "Hello, world!";
+PRINT-ATTR RE-COLLECTED (DISPLAY): #[expect_let] let string = "Hello, world!" ;
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Punct {
         ch: '#',
@@ -87,7 +89,8 @@ PRINT-ATTR INPUT (DEBUG): TokenStream [
         span: $DIR/allowed-attr-stmt-expr.rs:57:33: 57:34 (#0),
     },
 ]
-PRINT-ATTR INPUT (DISPLAY): #[expect_my_macro_stmt] my_macro! ("{}", string) ;
+PRINT-ATTR INPUT (DISPLAY): #[expect_my_macro_stmt] my_macro!("{}", string);
+PRINT-ATTR RE-COLLECTED (DISPLAY): #[expect_my_macro_stmt] my_macro! ("{}", string) ;
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Punct {
         ch: '#',
@@ -140,7 +143,8 @@ PRINT-ATTR INPUT (DEBUG): TokenStream [
         span: $DIR/allowed-attr-stmt-expr.rs:61:28: 61:29 (#0),
     },
 ]
-PRINT-ATTR INPUT (DISPLAY): second_make_stmt! (#[allow(dead_code)] struct Bar {}) ;
+PRINT-ATTR INPUT (DISPLAY): second_make_stmt!(#[allow(dead_code)] struct Bar {});
+PRINT-ATTR RE-COLLECTED (DISPLAY): second_make_stmt! (#[allow(dead_code)] struct Bar {}) ;
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Ident {
         ident: "second_make_stmt",
@@ -288,7 +292,8 @@ PRINT-ATTR INPUT (DEBUG): TokenStream [
         span: $DIR/allowed-attr-stmt-expr.rs:68:18: 68:20 (#0),
     },
 ]
-PRINT-ATTR INPUT (DISPLAY): #[rustc_dummy] struct NonBracedStruct ;
+PRINT-ATTR INPUT (DISPLAY): #[rustc_dummy] struct NonBracedStruct;
+PRINT-ATTR RE-COLLECTED (DISPLAY): #[rustc_dummy] struct NonBracedStruct ;
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Punct {
         ch: '#',
diff --git a/tests/ui/proc-macro/attr-complex-fn.stdout b/tests/ui/proc-macro/attr-complex-fn.stdout
index b12eb587fc7..7c23d1ecae4 100644
--- a/tests/ui/proc-macro/attr-complex-fn.stdout
+++ b/tests/ui/proc-macro/attr-complex-fn.stdout
@@ -1,4 +1,5 @@
-PRINT-ATTR INPUT (DISPLAY): fn foo < T : MyTrait < MyStruct < { true } >> > () {}
+PRINT-ATTR INPUT (DISPLAY): fn foo<T: MyTrait<MyStruct<{ true }>>>() {}
+PRINT-ATTR RE-COLLECTED (DISPLAY): fn foo < T : MyTrait < MyStruct < { true } >>> () {}
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Ident {
         ident: "fn",
@@ -76,7 +77,9 @@ PRINT-ATTR INPUT (DEBUG): TokenStream [
         span: $DIR/attr-complex-fn.rs:19:42: 19:44 (#0),
     },
 ]
-PRINT-ATTR INPUT (DISPLAY): impl < T > MyTrait < T > for MyStruct < { true } > { #! [rustc_dummy] }
+PRINT-ATTR INPUT (DISPLAY): impl<T> MyTrait<T> for MyStruct<{ true }> { #![rustc_dummy] }
+PRINT-ATTR RE-COLLECTED (DISPLAY): impl < T > MyTrait < T > for MyStruct < { true } > { #![rustc_dummy] }
+PRINT-ATTR DEEP-RE-COLLECTED (DISPLAY): impl < T > MyTrait < T > for MyStruct < { true } > { #! [rustc_dummy] }
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Ident {
         ident: "impl",
diff --git a/tests/ui/proc-macro/attr-stmt-expr.stdout b/tests/ui/proc-macro/attr-stmt-expr.stdout
index c6d77e0ed0c..5e09198bbd4 100644
--- a/tests/ui/proc-macro/attr-stmt-expr.stdout
+++ b/tests/ui/proc-macro/attr-stmt-expr.stdout
@@ -29,7 +29,8 @@ PRINT-ATTR INPUT (DEBUG): TokenStream [
         span: $DIR/attr-stmt-expr.rs:45:27: 45:29 (#0),
     },
 ]
-PRINT-ATTR INPUT (DISPLAY): #[expect_let] let string = "Hello, world!" ;
+PRINT-ATTR INPUT (DISPLAY): #[expect_let] let string = "Hello, world!";
+PRINT-ATTR RE-COLLECTED (DISPLAY): #[expect_let] let string = "Hello, world!" ;
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Punct {
         ch: '#',
@@ -71,7 +72,8 @@ PRINT-ATTR INPUT (DEBUG): TokenStream [
         span: $DIR/attr-stmt-expr.rs:49:33: 49:34 (#0),
     },
 ]
-PRINT-ATTR INPUT (DISPLAY): #[expect_my_macro_stmt] my_macro! ("{}", string) ;
+PRINT-ATTR INPUT (DISPLAY): #[expect_my_macro_stmt] my_macro!("{}", string);
+PRINT-ATTR RE-COLLECTED (DISPLAY): #[expect_my_macro_stmt] my_macro! ("{}", string) ;
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Punct {
         ch: '#',
@@ -124,7 +126,8 @@ PRINT-ATTR INPUT (DEBUG): TokenStream [
         span: $DIR/attr-stmt-expr.rs:53:28: 53:29 (#0),
     },
 ]
-PRINT-ATTR INPUT (DISPLAY): second_make_stmt! (#[allow(dead_code)] struct Bar {}) ;
+PRINT-ATTR INPUT (DISPLAY): second_make_stmt!(#[allow(dead_code)] struct Bar {});
+PRINT-ATTR RE-COLLECTED (DISPLAY): second_make_stmt! (#[allow(dead_code)] struct Bar {}) ;
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Ident {
         ident: "second_make_stmt",
diff --git a/tests/ui/proc-macro/attribute-after-derive.stdout b/tests/ui/proc-macro/attribute-after-derive.stdout
index 1b17d60476a..6d9531df8ca 100644
--- a/tests/ui/proc-macro/attribute-after-derive.stdout
+++ b/tests/ui/proc-macro/attribute-after-derive.stdout
@@ -1,4 +1,5 @@
-PRINT-ATTR INPUT (DISPLAY): #[derive(Print)] struct AttributeDerive { #[cfg(FALSE)] field : u8, }
+PRINT-ATTR INPUT (DISPLAY): #[derive(Print)] struct AttributeDerive { #[cfg(FALSE)] field: u8, }
+PRINT-ATTR DEEP-RE-COLLECTED (DISPLAY): #[derive(Print)] struct AttributeDerive { #[cfg(FALSE)] field : u8, }
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Punct {
         ch: '#',
@@ -130,7 +131,8 @@ PRINT-DERIVE INPUT (DEBUG): TokenStream [
         span: $DIR/attribute-after-derive.rs:23:24: 26:2 (#0),
     },
 ]
-PRINT-ATTR INPUT (DISPLAY): struct DeriveAttribute { #[cfg(FALSE)] field : u8, }
+PRINT-ATTR INPUT (DISPLAY): struct DeriveAttribute { #[cfg(FALSE)] field: u8, }
+PRINT-ATTR DEEP-RE-COLLECTED (DISPLAY): struct DeriveAttribute { #[cfg(FALSE)] field : u8, }
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Ident {
         ident: "struct",
diff --git a/tests/ui/proc-macro/attribute-spans-preserved.stdout b/tests/ui/proc-macro/attribute-spans-preserved.stdout
index cf9a97491f0..190098d0211 100644
--- a/tests/ui/proc-macro/attribute-spans-preserved.stdout
+++ b/tests/ui/proc-macro/attribute-spans-preserved.stdout
@@ -1 +1 @@
-fn main() { let y : u32 = "z" ; { let x : u32 = "y" ; } }
+fn main() { let y : u32 = "z" ; { let x: u32 = "y"; } }
diff --git a/tests/ui/proc-macro/auxiliary/attr-stmt-expr-rpass.rs b/tests/ui/proc-macro/auxiliary/attr-stmt-expr-rpass.rs
index 5b386b46bb7..76346d9a172 100644
--- a/tests/ui/proc-macro/auxiliary/attr-stmt-expr-rpass.rs
+++ b/tests/ui/proc-macro/auxiliary/attr-stmt-expr-rpass.rs
@@ -10,14 +10,14 @@ use proc_macro::TokenStream;
 #[proc_macro_attribute]
 pub fn expect_let(attr: TokenStream, item: TokenStream) -> TokenStream {
     assert!(attr.to_string().is_empty());
-    assert_eq!(item.to_string(), "let string = \"Hello, world!\" ;");
+    assert_eq!(item.to_string(), "let string = \"Hello, world!\";");
     item
 }
 
 #[proc_macro_attribute]
 pub fn expect_print_stmt(attr: TokenStream, item: TokenStream) -> TokenStream {
     assert!(attr.to_string().is_empty());
-    assert_eq!(item.to_string(), "println! (\"{}\", string) ;");
+    assert_eq!(item.to_string(), "println!(\"{}\", string);");
     item
 }
 
@@ -31,7 +31,7 @@ pub fn expect_expr(attr: TokenStream, item: TokenStream) -> TokenStream {
 #[proc_macro_attribute]
 pub fn expect_print_expr(attr: TokenStream, item: TokenStream) -> TokenStream {
     assert!(attr.to_string().is_empty());
-    assert_eq!(item.to_string(), "println! (\"{}\", string)");
+    assert_eq!(item.to_string(), "println!(\"{}\", string)");
     item
 }
 
@@ -40,7 +40,6 @@ pub fn no_output(attr: TokenStream, item: TokenStream) -> TokenStream {
     assert!(attr.to_string().is_empty());
     assert!(!item.to_string().is_empty());
     "".parse().unwrap()
-
 }
 
 #[proc_macro_attribute]
diff --git a/tests/ui/proc-macro/auxiliary/attr-stmt-expr.rs b/tests/ui/proc-macro/auxiliary/attr-stmt-expr.rs
index 4d6dc06b4a4..7a29894bbcf 100644
--- a/tests/ui/proc-macro/auxiliary/attr-stmt-expr.rs
+++ b/tests/ui/proc-macro/auxiliary/attr-stmt-expr.rs
@@ -31,7 +31,7 @@ pub fn expect_expr(attr: TokenStream, item: TokenStream) -> TokenStream {
 #[proc_macro_attribute]
 pub fn expect_my_macro_expr(attr: TokenStream, item: TokenStream) -> TokenStream {
     assert!(attr.to_string().is_empty());
-    assert_eq!(item.to_string(), "my_macro! (\"{}\", string)");
+    assert_eq!(item.to_string(), "my_macro!(\"{}\", string)");
     item
 }
 
diff --git a/tests/ui/proc-macro/auxiliary/derive-a.rs b/tests/ui/proc-macro/auxiliary/derive-a.rs
index 79a3864bf99..cd2be5fd84d 100644
--- a/tests/ui/proc-macro/auxiliary/derive-a.rs
+++ b/tests/ui/proc-macro/auxiliary/derive-a.rs
@@ -10,6 +10,6 @@ use proc_macro::TokenStream;
 #[proc_macro_derive(A)]
 pub fn derive(input: TokenStream) -> TokenStream {
     let input = input.to_string();
-    assert!(input.contains("struct A ;"));
+    assert!(input.contains("struct A;"));
     "".parse().unwrap()
 }
diff --git a/tests/ui/proc-macro/auxiliary/derive-atob.rs b/tests/ui/proc-macro/auxiliary/derive-atob.rs
index 207b7fd3203..e78e5bb8f4c 100644
--- a/tests/ui/proc-macro/auxiliary/derive-atob.rs
+++ b/tests/ui/proc-macro/auxiliary/derive-atob.rs
@@ -10,6 +10,6 @@ use proc_macro::TokenStream;
 #[proc_macro_derive(AToB)]
 pub fn derive(input: TokenStream) -> TokenStream {
     let input = input.to_string();
-    assert_eq!(input, "struct A ;");
+    assert_eq!(input, "struct A;");
     "struct B;".parse().unwrap()
 }
diff --git a/tests/ui/proc-macro/auxiliary/derive-b-rpass.rs b/tests/ui/proc-macro/auxiliary/derive-b-rpass.rs
index 641a95f78c1..3e6af67a9f4 100644
--- a/tests/ui/proc-macro/auxiliary/derive-b-rpass.rs
+++ b/tests/ui/proc-macro/auxiliary/derive-b-rpass.rs
@@ -10,7 +10,7 @@ use proc_macro::TokenStream;
 #[proc_macro_derive(B, attributes(B, C))]
 pub fn derive(input: TokenStream) -> TokenStream {
     let input = input.to_string();
-    assert!(input.contains("#[B [arbitrary tokens]]"));
+    assert!(input.contains("#[B[arbitrary tokens]]"));
     assert!(input.contains("struct B {"));
     assert!(input.contains("#[C]"));
     "".parse().unwrap()
diff --git a/tests/ui/proc-macro/auxiliary/derive-ctod.rs b/tests/ui/proc-macro/auxiliary/derive-ctod.rs
index 2efe5a91340..dbf44ed1b05 100644
--- a/tests/ui/proc-macro/auxiliary/derive-ctod.rs
+++ b/tests/ui/proc-macro/auxiliary/derive-ctod.rs
@@ -10,6 +10,6 @@ use proc_macro::TokenStream;
 #[proc_macro_derive(CToD)]
 pub fn derive(input: TokenStream) -> TokenStream {
     let input = input.to_string();
-    assert_eq!(input, "struct C ;");
+    assert_eq!(input, "struct C;");
     "struct D;".parse().unwrap()
 }
diff --git a/tests/ui/proc-macro/auxiliary/derive-same-struct.rs b/tests/ui/proc-macro/auxiliary/derive-same-struct.rs
index 7598d632cb6..ce7a50d2381 100644
--- a/tests/ui/proc-macro/auxiliary/derive-same-struct.rs
+++ b/tests/ui/proc-macro/auxiliary/derive-same-struct.rs
@@ -10,12 +10,12 @@ use proc_macro::TokenStream;
 #[proc_macro_derive(AToB)]
 pub fn derive1(input: TokenStream) -> TokenStream {
     println!("input1: {:?}", input.to_string());
-    assert_eq!(input.to_string(), "struct A ;");
+    assert_eq!(input.to_string(), "struct A;");
     "#[derive(BToC)] struct B;".parse().unwrap()
 }
 
 #[proc_macro_derive(BToC)]
 pub fn derive2(input: TokenStream) -> TokenStream {
-    assert_eq!(input.to_string(), "struct B ;");
+    assert_eq!(input.to_string(), "struct B;");
     "struct C;".parse().unwrap()
 }
diff --git a/tests/ui/proc-macro/auxiliary/derive-union.rs b/tests/ui/proc-macro/auxiliary/derive-union.rs
index 05883170c6c..d950e1e773c 100644
--- a/tests/ui/proc-macro/auxiliary/derive-union.rs
+++ b/tests/ui/proc-macro/auxiliary/derive-union.rs
@@ -12,7 +12,7 @@ pub fn derive(input: TokenStream) -> TokenStream {
     let input = input.to_string();
     assert!(input.contains("#[repr(C)]"));
     assert!(input.contains("union Test {"));
-    assert!(input.contains("a : u8,"));
+    assert!(input.contains("a: u8,"));
     assert!(input.contains("}"));
     "".parse().unwrap()
 }
diff --git a/tests/ui/proc-macro/auxiliary/expand-with-a-macro.rs b/tests/ui/proc-macro/auxiliary/expand-with-a-macro.rs
index d779d57af14..5155a4b8558 100644
--- a/tests/ui/proc-macro/auxiliary/expand-with-a-macro.rs
+++ b/tests/ui/proc-macro/auxiliary/expand-with-a-macro.rs
@@ -11,7 +11,7 @@ use proc_macro::TokenStream;
 #[proc_macro_derive(A)]
 pub fn derive(input: TokenStream) -> TokenStream {
     let input = input.to_string();
-    assert!(input.contains("struct A ;"));
+    assert!(input.contains("struct A;"));
     r#"
         impl A {
             fn a(&self) {
diff --git a/tests/ui/proc-macro/auxiliary/issue-79825.rs b/tests/ui/proc-macro/auxiliary/issue-79825.rs
index 930891b1d43..69cf5904f90 100644
--- a/tests/ui/proc-macro/auxiliary/issue-79825.rs
+++ b/tests/ui/proc-macro/auxiliary/issue-79825.rs
@@ -8,7 +8,7 @@ use proc_macro::TokenStream;
 
 #[proc_macro_attribute]
 pub fn assert_input(args: TokenStream, input: TokenStream) -> TokenStream {
-    assert_eq!(input.to_string(), "trait Alias = Sized ;");
+    assert_eq!(input.to_string(), "trait Alias = Sized;");
     assert!(args.is_empty());
     TokenStream::new()
 }
diff --git a/tests/ui/proc-macro/capture-macro-rules-invoke.stdout b/tests/ui/proc-macro/capture-macro-rules-invoke.stdout
index 01d71ff989b..71e34119ba7 100644
--- a/tests/ui/proc-macro/capture-macro-rules-invoke.stdout
+++ b/tests/ui/proc-macro/capture-macro-rules-invoke.stdout
@@ -14,6 +14,8 @@ PRINT-BANG INPUT (DEBUG): TokenStream [
 PRINT-BANG INPUT (DISPLAY): 1 + 1, { "a" }, let a = 1;, String, my_name, 'a, my_val = 30,
 std::option::Option, pub(in some::path) , [a b c], -30
 PRINT-BANG RE-COLLECTED (DISPLAY): 1 + 1, { "a" }, let a = 1, String, my_name, 'a, my_val = 30,
+std::option::Option, pub(in some::path), [a b c], -30
+PRINT-BANG DEEP-RE-COLLECTED (DISPLAY): 1 + 1, { "a" }, let a = 1, String, my_name, 'a, my_val = 30,
 std :: option :: Option, pub(in some :: path), [a b c], - 30
 PRINT-BANG INPUT (DEBUG): TokenStream [
     Group {
diff --git a/tests/ui/proc-macro/capture-unglued-token.stdout b/tests/ui/proc-macro/capture-unglued-token.stdout
index a0d2178f000..84b7ca35524 100644
--- a/tests/ui/proc-macro/capture-unglued-token.stdout
+++ b/tests/ui/proc-macro/capture-unglued-token.stdout
@@ -1,5 +1,5 @@
 PRINT-BANG INPUT (DISPLAY): Vec<u8>
-PRINT-BANG RE-COLLECTED (DISPLAY): Vec < u8 >
+PRINT-BANG DEEP-RE-COLLECTED (DISPLAY): Vec < u8 >
 PRINT-BANG INPUT (DEBUG): TokenStream [
     Group {
         delimiter: None,
diff --git a/tests/ui/proc-macro/cfg-eval-inner.stdout b/tests/ui/proc-macro/cfg-eval-inner.stdout
index 9d25def587c..43ae47c201f 100644
--- a/tests/ui/proc-macro/cfg-eval-inner.stdout
+++ b/tests/ui/proc-macro/cfg-eval-inner.stdout
@@ -1,4 +1,16 @@
-PRINT-ATTR INPUT (DISPLAY): impl Foo <
+PRINT-ATTR INPUT (DISPLAY): impl
+Foo<[u8;
+{
+    #![rustc_dummy(cursed_inner)] #![allow(unused)] struct Inner
+    { field: [u8; { #![rustc_dummy(another_cursed_inner)] 1 }] } 0
+}]> { #![rustc_dummy(evaluated_attr)] fn bar() {} }
+PRINT-ATTR RE-COLLECTED (DISPLAY): impl Foo <
+[u8;
+{
+    #![rustc_dummy(cursed_inner)] #![allow(unused)] struct Inner
+    { field: [u8; { #![rustc_dummy(another_cursed_inner)] 1 }] } 0
+}] > { #![rustc_dummy(evaluated_attr)] fn bar() {} }
+PRINT-ATTR DEEP-RE-COLLECTED (DISPLAY): impl Foo <
 [u8 ;
 {
     #! [rustc_dummy(cursed_inner)] #! [allow(unused)] struct Inner
@@ -35,7 +47,7 @@ PRINT-ATTR INPUT (DEBUG): TokenStream [
                 stream: TokenStream [
                     Punct {
                         ch: '#',
-                        spacing: Alone,
+                        spacing: Joint,
                         span: $DIR/cfg-eval-inner.rs:19:5: 19:6 (#0),
                     },
                     Punct {
@@ -130,7 +142,7 @@ PRINT-ATTR INPUT (DEBUG): TokenStream [
                                         stream: TokenStream [
                                             Punct {
                                                 ch: '#',
-                                                spacing: Alone,
+                                                spacing: Joint,
                                                 span: $DIR/cfg-eval-inner.rs:23:13: 23:14 (#0),
                                             },
                                             Punct {
@@ -195,7 +207,7 @@ PRINT-ATTR INPUT (DEBUG): TokenStream [
         stream: TokenStream [
             Punct {
                 ch: '#',
-                spacing: Alone,
+                spacing: Joint,
                 span: $DIR/cfg-eval-inner.rs:32:5: 32:6 (#0),
             },
             Punct {
diff --git a/tests/ui/proc-macro/cfg-eval.stdout b/tests/ui/proc-macro/cfg-eval.stdout
index 6732caf08dd..e26e16f5a8c 100644
--- a/tests/ui/proc-macro/cfg-eval.stdout
+++ b/tests/ui/proc-macro/cfg-eval.stdout
@@ -1,4 +1,5 @@
-PRINT-ATTR INPUT (DISPLAY): struct S1 { #[cfg(all())] #[allow()] field_true : u8, }
+PRINT-ATTR INPUT (DISPLAY): struct S1 { #[cfg(all())] #[allow()] field_true: u8, }
+PRINT-ATTR DEEP-RE-COLLECTED (DISPLAY): struct S1 { #[cfg(all())] #[allow()] field_true : u8, }
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Ident {
         ident: "struct",
diff --git a/tests/ui/proc-macro/custom-attr-only-one-derive.rs b/tests/ui/proc-macro/custom-attr-only-one-derive.rs
index 2cd5b487301..901394384d5 100644
--- a/tests/ui/proc-macro/custom-attr-only-one-derive.rs
+++ b/tests/ui/proc-macro/custom-attr-only-one-derive.rs
@@ -1,8 +1,6 @@
 // run-pass
 // aux-build:custom-attr-only-one-derive.rs
 
-#![feature(rust_2018_preview)]
-
 #[macro_use]
 extern crate custom_attr_only_one_derive;
 
diff --git a/tests/ui/proc-macro/derive-same-struct.stdout b/tests/ui/proc-macro/derive-same-struct.stdout
index 7478d974140..77605de5e33 100644
--- a/tests/ui/proc-macro/derive-same-struct.stdout
+++ b/tests/ui/proc-macro/derive-same-struct.stdout
@@ -1 +1 @@
-input1: "struct A ;"
+input1: "struct A;"
diff --git a/tests/ui/proc-macro/doc-comment-preserved.stdout b/tests/ui/proc-macro/doc-comment-preserved.stdout
index f4160d7da80..b0ea180d9bd 100644
--- a/tests/ui/proc-macro/doc-comment-preserved.stdout
+++ b/tests/ui/proc-macro/doc-comment-preserved.stdout
@@ -5,7 +5,7 @@ PRINT-BANG INPUT (DISPLAY): /**
 * DOC *
 *******
 */
- pub struct S ;
+ pub struct S;
 PRINT-BANG RE-COLLECTED (DISPLAY): #[doc = "\n*******\n* DOC *\n* DOC *\n* DOC *\n*******\n"] pub struct S ;
 PRINT-BANG INPUT (DEBUG): TokenStream [
     Punct {
diff --git a/tests/ui/proc-macro/dollar-crate-issue-57089.stdout b/tests/ui/proc-macro/dollar-crate-issue-57089.stdout
index de4f0c000b6..7f97ac9dbc2 100644
--- a/tests/ui/proc-macro/dollar-crate-issue-57089.stdout
+++ b/tests/ui/proc-macro/dollar-crate-issue-57089.stdout
@@ -1,4 +1,5 @@
-PRINT-BANG INPUT (DISPLAY): struct M($crate :: S) ;
+PRINT-BANG INPUT (DISPLAY): struct M($crate :: S);
+PRINT-BANG RE-COLLECTED (DISPLAY): struct M($crate :: S) ;
 PRINT-BANG INPUT (DEBUG): TokenStream [
     Ident {
         ident: "struct",
@@ -38,7 +39,8 @@ PRINT-BANG INPUT (DEBUG): TokenStream [
         span: $DIR/dollar-crate-issue-57089.rs:17:32: 17:33 (#3),
     },
 ]
-PRINT-ATTR INPUT (DISPLAY): struct A($crate :: S) ;
+PRINT-ATTR INPUT (DISPLAY): struct A($crate :: S);
+PRINT-ATTR RE-COLLECTED (DISPLAY): struct A($crate :: S) ;
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Ident {
         ident: "struct",
diff --git a/tests/ui/proc-macro/dollar-crate-issue-62325.stdout b/tests/ui/proc-macro/dollar-crate-issue-62325.stdout
index c7e72bf4ff5..96161049e30 100644
--- a/tests/ui/proc-macro/dollar-crate-issue-62325.stdout
+++ b/tests/ui/proc-macro/dollar-crate-issue-62325.stdout
@@ -1,4 +1,5 @@
-PRINT-ATTR INPUT (DISPLAY): struct A(identity! ($crate :: S)) ;
+PRINT-ATTR INPUT (DISPLAY): struct A(identity! ($crate :: S));
+PRINT-ATTR RE-COLLECTED (DISPLAY): struct A(identity! ($crate :: S)) ;
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Ident {
         ident: "struct",
@@ -53,7 +54,8 @@ PRINT-ATTR INPUT (DEBUG): TokenStream [
         span: $DIR/dollar-crate-issue-62325.rs:19:35: 19:36 (#3),
     },
 ]
-PRINT-ATTR INPUT (DISPLAY): struct B(identity! ($crate :: S)) ;
+PRINT-ATTR INPUT (DISPLAY): struct B(identity! ($crate :: S));
+PRINT-ATTR RE-COLLECTED (DISPLAY): struct B(identity! ($crate :: S)) ;
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Ident {
         ident: "struct",
diff --git a/tests/ui/proc-macro/dollar-crate.stdout b/tests/ui/proc-macro/dollar-crate.stdout
index 0f5f87ceca2..a6bdab00441 100644
--- a/tests/ui/proc-macro/dollar-crate.stdout
+++ b/tests/ui/proc-macro/dollar-crate.stdout
@@ -1,4 +1,5 @@
-PRINT-BANG INPUT (DISPLAY): struct M($crate :: S) ;
+PRINT-BANG INPUT (DISPLAY): struct M($crate :: S);
+PRINT-BANG RE-COLLECTED (DISPLAY): struct M($crate :: S) ;
 PRINT-BANG INPUT (DEBUG): TokenStream [
     Ident {
         ident: "struct",
@@ -38,7 +39,8 @@ PRINT-BANG INPUT (DEBUG): TokenStream [
         span: $DIR/dollar-crate.rs:20:36: 20:37 (#3),
     },
 ]
-PRINT-ATTR INPUT (DISPLAY): struct A($crate :: S) ;
+PRINT-ATTR INPUT (DISPLAY): struct A($crate :: S);
+PRINT-ATTR RE-COLLECTED (DISPLAY): struct A($crate :: S) ;
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Ident {
         ident: "struct",
@@ -78,7 +80,8 @@ PRINT-ATTR INPUT (DEBUG): TokenStream [
         span: $DIR/dollar-crate.rs:24:32: 24:33 (#3),
     },
 ]
-PRINT-DERIVE INPUT (DISPLAY): struct D($crate :: S) ;
+PRINT-DERIVE INPUT (DISPLAY): struct D($crate :: S);
+PRINT-DERIVE RE-COLLECTED (DISPLAY): struct D($crate :: S) ;
 PRINT-DERIVE INPUT (DEBUG): TokenStream [
     Ident {
         ident: "struct",
@@ -118,7 +121,8 @@ PRINT-DERIVE INPUT (DEBUG): TokenStream [
         span: $DIR/dollar-crate.rs:27:32: 27:33 (#3),
     },
 ]
-PRINT-BANG INPUT (DISPLAY): struct M($crate :: S) ;
+PRINT-BANG INPUT (DISPLAY): struct M($crate :: S);
+PRINT-BANG RE-COLLECTED (DISPLAY): struct M($crate :: S) ;
 PRINT-BANG INPUT (DEBUG): TokenStream [
     Ident {
         ident: "struct",
@@ -158,7 +162,8 @@ PRINT-BANG INPUT (DEBUG): TokenStream [
         span: $DIR/auxiliary/dollar-crate-external.rs:7:32: 7:33 (#14),
     },
 ]
-PRINT-ATTR INPUT (DISPLAY): struct A($crate :: S) ;
+PRINT-ATTR INPUT (DISPLAY): struct A($crate :: S);
+PRINT-ATTR RE-COLLECTED (DISPLAY): struct A($crate :: S) ;
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Ident {
         ident: "struct",
@@ -198,7 +203,8 @@ PRINT-ATTR INPUT (DEBUG): TokenStream [
         span: $DIR/auxiliary/dollar-crate-external.rs:11:28: 11:29 (#14),
     },
 ]
-PRINT-DERIVE INPUT (DISPLAY): struct D($crate :: S) ;
+PRINT-DERIVE INPUT (DISPLAY): struct D($crate :: S);
+PRINT-DERIVE RE-COLLECTED (DISPLAY): struct D($crate :: S) ;
 PRINT-DERIVE INPUT (DEBUG): TokenStream [
     Ident {
         ident: "struct",
diff --git a/tests/ui/proc-macro/expand-to-derive.stdout b/tests/ui/proc-macro/expand-to-derive.stdout
index 39f00918329..9f03a469aeb 100644
--- a/tests/ui/proc-macro/expand-to-derive.stdout
+++ b/tests/ui/proc-macro/expand-to-derive.stdout
@@ -1,6 +1,11 @@
 PRINT-DERIVE INPUT (DISPLAY): struct Foo
 {
     field :
+    [bool ; { #[rustc_dummy] struct Inner { other_inner_field: u8, } 0 }]
+}
+PRINT-DERIVE DEEP-RE-COLLECTED (DISPLAY): struct Foo
+{
+    field :
     [bool ; { #[rustc_dummy] struct Inner { other_inner_field : u8, } 0 }]
 }
 PRINT-DERIVE INPUT (DEBUG): TokenStream [
diff --git a/tests/ui/proc-macro/expr-stmt-nonterminal-tokens.stdout b/tests/ui/proc-macro/expr-stmt-nonterminal-tokens.stdout
index 40181efc0b8..eda2f433bce 100644
--- a/tests/ui/proc-macro/expr-stmt-nonterminal-tokens.stdout
+++ b/tests/ui/proc-macro/expr-stmt-nonterminal-tokens.stdout
@@ -122,7 +122,7 @@ PRINT-DERIVE INPUT (DEBUG): TokenStream [
         span: #3 bytes(306..355),
     },
 ]
-PRINT-DERIVE INPUT (DISPLAY): enum E { V = { let _ = { 0; } ; 0 }, }
+PRINT-DERIVE INPUT (DISPLAY): enum E { V = { let _ = { 0; }; 0 }, }
 PRINT-DERIVE DEEP-RE-COLLECTED (DISPLAY): enum E { V = { let _ = { 0 } ; 0 }, }
 PRINT-DERIVE INPUT (DEBUG): TokenStream [
     Ident {
@@ -202,7 +202,8 @@ PRINT-DERIVE INPUT (DEBUG): TokenStream [
         span: #7 bytes(430..483),
     },
 ]
-PRINT-DERIVE INPUT (DISPLAY): enum E { V = { let _ = { {} } ; 0 }, }
+PRINT-DERIVE INPUT (DISPLAY): enum E { V = { let _ = { {} }; 0 }, }
+PRINT-DERIVE DEEP-RE-COLLECTED (DISPLAY): enum E { V = { let _ = { {} } ; 0 }, }
 PRINT-DERIVE INPUT (DEBUG): TokenStream [
     Ident {
         ident: "enum",
@@ -280,7 +281,7 @@ PRINT-DERIVE INPUT (DEBUG): TokenStream [
         span: #11 bytes(430..483),
     },
 ]
-PRINT-DERIVE INPUT (DISPLAY): enum E { V = { let _ = { PATH; } ; 0 }, }
+PRINT-DERIVE INPUT (DISPLAY): enum E { V = { let _ = { PATH; }; 0 }, }
 PRINT-DERIVE DEEP-RE-COLLECTED (DISPLAY): enum E { V = { let _ = { PATH } ; 0 }, }
 PRINT-DERIVE INPUT (DEBUG): TokenStream [
     Ident {
@@ -358,7 +359,7 @@ PRINT-DERIVE INPUT (DEBUG): TokenStream [
         span: #15 bytes(430..483),
     },
 ]
-PRINT-DERIVE INPUT (DISPLAY): enum E { V = { let _ = { 0 + 1; } ; 0 }, }
+PRINT-DERIVE INPUT (DISPLAY): enum E { V = { let _ = { 0 + 1; }; 0 }, }
 PRINT-DERIVE DEEP-RE-COLLECTED (DISPLAY): enum E { V = { let _ = { 0 + 1 } ; 0 }, }
 PRINT-DERIVE INPUT (DEBUG): TokenStream [
     Ident {
@@ -449,7 +450,7 @@ PRINT-DERIVE INPUT (DEBUG): TokenStream [
         span: #19 bytes(430..483),
     },
 ]
-PRINT-DERIVE INPUT (DISPLAY): enum E { V = { let _ = { PATH + 1; } ; 0 }, }
+PRINT-DERIVE INPUT (DISPLAY): enum E { V = { let _ = { PATH + 1; }; 0 }, }
 PRINT-DERIVE DEEP-RE-COLLECTED (DISPLAY): enum E { V = { let _ = { PATH + 1 } ; 0 }, }
 PRINT-DERIVE INPUT (DEBUG): TokenStream [
     Ident {
diff --git a/tests/ui/proc-macro/inert-attribute-order.stdout b/tests/ui/proc-macro/inert-attribute-order.stdout
index cc215545952..86b27217974 100644
--- a/tests/ui/proc-macro/inert-attribute-order.stdout
+++ b/tests/ui/proc-macro/inert-attribute-order.stdout
@@ -1,7 +1,11 @@
 PRINT-ATTR INPUT (DISPLAY): /// 1
-#[rustfmt :: attr2] #[doc = "3"] #[doc = "4"] #[rustfmt :: attr5] /// 6
-#[print_attr(nodebug)] struct S ;
-PRINT-ATTR RE-COLLECTED (DISPLAY): #[doc = " 1"] #[rustfmt :: attr2] #[doc = "3"] #[doc = "4"]
+#[rustfmt::attr2] #[doc = "3"] #[doc = "4"] #[rustfmt::attr5] /// 6
+#[print_attr(nodebug)] struct S;
+PRINT-ATTR RE-COLLECTED (DISPLAY): #[doc = " 1"] #[rustfmt::attr2] #[doc = "3"] #[doc = "4"] #[rustfmt::attr5]
+#[doc = " 6"] #[print_attr(nodebug)] struct S ;
+PRINT-ATTR DEEP-RE-COLLECTED (DISPLAY): #[doc = " 1"] #[rustfmt :: attr2] #[doc = "3"] #[doc = "4"]
 #[rustfmt :: attr5] #[doc = " 6"] #[print_attr(nodebug)] struct S ;
-PRINT-ATTR INPUT (DISPLAY): #[doc = " 1"] #[rustfmt :: attr2] #[doc = "3"] #[doc = "4"]
+PRINT-ATTR INPUT (DISPLAY): #[doc = " 1"] #[rustfmt::attr2] #[doc = "3"] #[doc = "4"] #[rustfmt::attr5]
+#[doc = " 6"] struct S ;
+PRINT-ATTR DEEP-RE-COLLECTED (DISPLAY): #[doc = " 1"] #[rustfmt :: attr2] #[doc = "3"] #[doc = "4"]
 #[rustfmt :: attr5] #[doc = " 6"] struct S ;
diff --git a/tests/ui/proc-macro/inner-attr-non-inline-mod.stdout b/tests/ui/proc-macro/inner-attr-non-inline-mod.stdout
index 6261d82e2d0..aaec40669e6 100644
--- a/tests/ui/proc-macro/inner-attr-non-inline-mod.stdout
+++ b/tests/ui/proc-macro/inner-attr-non-inline-mod.stdout
@@ -1,4 +1,5 @@
-PRINT-ATTR INPUT (DISPLAY): #[deny(unused_attributes)] mod module_with_attrs { #! [rustfmt :: skip] }
+PRINT-ATTR INPUT (DISPLAY): #[deny(unused_attributes)] mod module_with_attrs { #![rustfmt::skip] }
+PRINT-ATTR DEEP-RE-COLLECTED (DISPLAY): #[deny(unused_attributes)] mod module_with_attrs { #! [rustfmt :: skip] }
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Punct {
         ch: '#',
diff --git a/tests/ui/proc-macro/inner-attrs.stdout b/tests/ui/proc-macro/inner-attrs.stdout
index ee8adf0b4a9..037ec044e42 100644
--- a/tests/ui/proc-macro/inner-attrs.stdout
+++ b/tests/ui/proc-macro/inner-attrs.stdout
@@ -6,6 +6,8 @@ PRINT-ATTR_ARGS INPUT (DEBUG): TokenStream [
     },
 ]
 PRINT-ATTR INPUT (DISPLAY): #[print_target_and_args(second)] fn foo()
+{ #![print_target_and_args(third)] #![print_target_and_args(fourth)] }
+PRINT-ATTR DEEP-RE-COLLECTED (DISPLAY): #[print_target_and_args(second)] fn foo()
 { #! [print_target_and_args(third)] #! [print_target_and_args(fourth)] }
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Punct {
@@ -121,6 +123,8 @@ PRINT-ATTR_ARGS INPUT (DEBUG): TokenStream [
     },
 ]
 PRINT-ATTR INPUT (DISPLAY): fn foo()
+{ #![print_target_and_args(third)] #![print_target_and_args(fourth)] }
+PRINT-ATTR DEEP-RE-COLLECTED (DISPLAY): fn foo()
 { #! [print_target_and_args(third)] #! [print_target_and_args(fourth)] }
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Ident {
@@ -210,7 +214,8 @@ PRINT-ATTR_ARGS INPUT (DEBUG): TokenStream [
         span: $DIR/inner-attrs.rs:20:30: 20:35 (#0),
     },
 ]
-PRINT-ATTR INPUT (DISPLAY): fn foo() { #! [print_target_and_args(fourth)] }
+PRINT-ATTR INPUT (DISPLAY): fn foo() { #![print_target_and_args(fourth)] }
+PRINT-ATTR DEEP-RE-COLLECTED (DISPLAY): fn foo() { #! [print_target_and_args(fourth)] }
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Ident {
         ident: "fn",
@@ -298,6 +303,8 @@ PRINT-ATTR_ARGS INPUT (DEBUG): TokenStream [
     },
 ]
 PRINT-ATTR INPUT (DISPLAY): #[print_target_and_args(mod_second)] mod inline_mod
+{ #![print_target_and_args(mod_third)] #![print_target_and_args(mod_fourth)] }
+PRINT-ATTR DEEP-RE-COLLECTED (DISPLAY): #[print_target_and_args(mod_second)] mod inline_mod
 {
     #! [print_target_and_args(mod_third)] #!
     [print_target_and_args(mod_fourth)]
@@ -411,6 +418,8 @@ PRINT-ATTR_ARGS INPUT (DEBUG): TokenStream [
     },
 ]
 PRINT-ATTR INPUT (DISPLAY): mod inline_mod
+{ #![print_target_and_args(mod_third)] #![print_target_and_args(mod_fourth)] }
+PRINT-ATTR DEEP-RE-COLLECTED (DISPLAY): mod inline_mod
 {
     #! [print_target_and_args(mod_third)] #!
     [print_target_and_args(mod_fourth)]
@@ -498,7 +507,8 @@ PRINT-ATTR_ARGS INPUT (DEBUG): TokenStream [
         span: $DIR/inner-attrs.rs:27:30: 27:39 (#0),
     },
 ]
-PRINT-ATTR INPUT (DISPLAY): mod inline_mod { #! [print_target_and_args(mod_fourth)] }
+PRINT-ATTR INPUT (DISPLAY): mod inline_mod { #![print_target_and_args(mod_fourth)] }
+PRINT-ATTR DEEP-RE-COLLECTED (DISPLAY): mod inline_mod { #! [print_target_and_args(mod_fourth)] }
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Ident {
         ident: "mod",
@@ -569,6 +579,8 @@ PRINT-ATTR INPUT (DEBUG): TokenStream [
     },
 ]
 PRINT-DERIVE INPUT (DISPLAY): struct MyDerivePrint
+{ field: [u8; { match true { _ => { #![rustc_dummy(third)] true } }; 0 }] }
+PRINT-DERIVE DEEP-RE-COLLECTED (DISPLAY): struct MyDerivePrint
 {
     field :
     [u8 ; { match true { _ => { #! [rustc_dummy(third)] true } } ; 0 }]
@@ -639,7 +651,7 @@ PRINT-DERIVE INPUT (DEBUG): TokenStream [
                                         stream: TokenStream [
                                             Punct {
                                                 ch: '#',
-                                                spacing: Alone,
+                                                spacing: Joint,
                                                 span: $DIR/inner-attrs.rs:40:17: 40:18 (#0),
                                             },
                                             Punct {
@@ -705,7 +717,9 @@ PRINT-ATTR_ARGS INPUT (DEBUG): TokenStream [
         span: $DIR/inner-attrs.rs:49:29: 49:40 (#0),
     },
 ]
-PRINT-ATTR INPUT (DISPLAY): (3, 4, { #! [cfg_attr(not(FALSE), rustc_dummy(innermost))] 5 }) ;
+PRINT-ATTR INPUT (DISPLAY): (3, 4, { #![cfg_attr(not(FALSE), rustc_dummy(innermost))] 5 });
+PRINT-ATTR RE-COLLECTED (DISPLAY): (3, 4, { #![cfg_attr(not(FALSE), rustc_dummy(innermost))] 5 }) ;
+PRINT-ATTR DEEP-RE-COLLECTED (DISPLAY): (3, 4, { #! [cfg_attr(not(FALSE), rustc_dummy(innermost))] 5 }) ;
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Group {
         delimiter: Parenthesis,
@@ -819,7 +833,9 @@ PRINT-ATTR_ARGS INPUT (DEBUG): TokenStream [
         span: $DIR/inner-attrs.rs:56:29: 56:40 (#0),
     },
 ]
-PRINT-ATTR INPUT (DISPLAY): (3, 4, { #! [cfg_attr(not(FALSE), rustc_dummy(innermost))] 5 }) ;
+PRINT-ATTR INPUT (DISPLAY): (3, 4, { #![cfg_attr(not(FALSE), rustc_dummy(innermost))] 5 });
+PRINT-ATTR RE-COLLECTED (DISPLAY): (3, 4, { #![cfg_attr(not(FALSE), rustc_dummy(innermost))] 5 }) ;
+PRINT-ATTR DEEP-RE-COLLECTED (DISPLAY): (3, 4, { #! [cfg_attr(not(FALSE), rustc_dummy(innermost))] 5 }) ;
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Group {
         delimiter: Parenthesis,
diff --git a/tests/ui/proc-macro/issue-75734-pp-paren.stdout b/tests/ui/proc-macro/issue-75734-pp-paren.stdout
index 2f7c013e958..ee135366fb6 100644
--- a/tests/ui/proc-macro/issue-75734-pp-paren.stdout
+++ b/tests/ui/proc-macro/issue-75734-pp-paren.stdout
@@ -1,4 +1,5 @@
-PRINT-ATTR INPUT (DISPLAY): fn main() { & | _ : u8 | {} ; mul_2! (1 + 1) ; }
+PRINT-ATTR INPUT (DISPLAY): fn main() { &|_: u8| {}; mul_2!(1 + 1); }
+PRINT-ATTR DEEP-RE-COLLECTED (DISPLAY): fn main() { &| _ : u8 | {} ; mul_2! (1 + 1) ; }
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Ident {
         ident: "fn",
diff --git a/tests/ui/proc-macro/issue-75930-derive-cfg.stdout b/tests/ui/proc-macro/issue-75930-derive-cfg.stdout
index 31a1c44b6df..47f26451d1c 100644
--- a/tests/ui/proc-macro/issue-75930-derive-cfg.stdout
+++ b/tests/ui/proc-macro/issue-75930-derive-cfg.stdout
@@ -1,5 +1,53 @@
 PRINT-ATTR INPUT (DISPLAY): #[print_helper(a)] #[allow(dead_code)] #[derive(Print)] #[print_helper(b)]
-struct Foo < #[cfg(FALSE)] A, B >
+struct Foo<#[cfg(FALSE)] A, B>
+{
+    #[cfg(FALSE)] first: String, #[cfg_attr(FALSE, deny(warnings))] second:
+    bool, third:
+    [u8;
+    {
+        #[cfg(FALSE)] struct Bar; #[cfg(not(FALSE))] struct Inner;
+        #[cfg(FALSE)] let a = 25; match true
+        {
+            #[cfg(FALSE)] true => {}, #[cfg_attr(not(FALSE), allow(warnings))]
+            false => {}, _ => {}
+        }; #[print_helper(should_be_removed)] fn removed_fn()
+        { #![cfg(FALSE)] } #[print_helper(c)] #[cfg(not(FALSE))] fn kept_fn()
+        { #![cfg(not(FALSE))] let my_val = true; } enum TupleEnum
+        {
+            Foo(#[cfg(FALSE)] u8, #[cfg(FALSE)] bool, #[cfg(not(FALSE))] i32,
+            #[cfg(FALSE)] String, u8)
+        } struct
+        TupleStruct(#[cfg(FALSE)] String, #[cfg(not(FALSE))] i32,
+        #[cfg(FALSE)] bool, u8); fn plain_removed_fn()
+        { #![cfg_attr(not(FALSE), cfg(FALSE))] } 0
+    }], #[print_helper(d)] fourth: B
+}
+PRINT-ATTR RE-COLLECTED (DISPLAY): #[print_helper(a)] #[allow(dead_code)] #[derive(Print)] #[print_helper(b)]
+struct Foo <#[cfg(FALSE)] A, B >
+{
+    #[cfg(FALSE)] first: String, #[cfg_attr(FALSE, deny(warnings))] second:
+    bool, third:
+    [u8;
+    {
+        #[cfg(FALSE)] struct Bar; #[cfg(not(FALSE))] struct Inner;
+        #[cfg(FALSE)] let a = 25; match true
+        {
+            #[cfg(FALSE)] true => {}, #[cfg_attr(not(FALSE), allow(warnings))]
+            false => {}, _ => {}
+        }; #[print_helper(should_be_removed)] fn removed_fn()
+        { #![cfg(FALSE)] } #[print_helper(c)] #[cfg(not(FALSE))] fn kept_fn()
+        { #![cfg(not(FALSE))] let my_val = true; } enum TupleEnum
+        {
+            Foo(#[cfg(FALSE)] u8, #[cfg(FALSE)] bool, #[cfg(not(FALSE))] i32,
+            #[cfg(FALSE)] String, u8)
+        } struct
+        TupleStruct(#[cfg(FALSE)] String, #[cfg(not(FALSE))] i32,
+        #[cfg(FALSE)] bool, u8); fn plain_removed_fn()
+        { #![cfg_attr(not(FALSE), cfg(FALSE))] } 0
+    }], #[print_helper(d)] fourth: B
+}
+PRINT-ATTR DEEP-RE-COLLECTED (DISPLAY): #[print_helper(a)] #[allow(dead_code)] #[derive(Print)] #[print_helper(b)]
+struct Foo <#[cfg(FALSE)] A, B >
 {
     #[cfg(FALSE)] first : String, #[cfg_attr(FALSE, deny(warnings))] second :
     bool, third :
@@ -1272,7 +1320,20 @@ PRINT-ATTR INPUT (DEBUG): TokenStream [
         span: $DIR/issue-75930-derive-cfg.rs:55:32: 102:2 (#0),
     },
 ]
-PRINT-DERIVE INPUT (DISPLAY): #[print_helper(a)] #[allow(dead_code)] #[print_helper(b)] struct Foo < B >
+PRINT-DERIVE INPUT (DISPLAY): #[print_helper(a)] #[allow(dead_code)] #[print_helper(b)] struct Foo <B >
+{
+    second: bool, third:
+    [u8;
+    {
+        #[cfg(not(FALSE))] struct Inner; match true
+        { #[allow(warnings)] false => {}, _ => {} }; #[print_helper(c)]
+        #[cfg(not(FALSE))] fn kept_fn()
+        { #![cfg(not(FALSE))] let my_val = true; } enum TupleEnum
+        { Foo(#[cfg(not(FALSE))] i32, u8) } struct
+        TupleStruct(#[cfg(not(FALSE))] i32, u8); 0
+    }], #[print_helper(d)] fourth: B
+}
+PRINT-DERIVE DEEP-RE-COLLECTED (DISPLAY): #[print_helper(a)] #[allow(dead_code)] #[print_helper(b)] struct Foo <B >
 {
     second : bool, third :
     [u8 ;
diff --git a/tests/ui/proc-macro/issue-78675-captured-inner-attrs.stdout b/tests/ui/proc-macro/issue-78675-captured-inner-attrs.stdout
index ae5e9400809..37ecf3a8df3 100644
--- a/tests/ui/proc-macro/issue-78675-captured-inner-attrs.stdout
+++ b/tests/ui/proc-macro/issue-78675-captured-inner-attrs.stdout
@@ -46,7 +46,7 @@ PRINT-BANG INPUT (DEBUG): TokenStream [
                         stream: TokenStream [
                             Punct {
                                 ch: '#',
-                                spacing: Alone,
+                                spacing: Joint,
                                 span: $DIR/issue-78675-captured-inner-attrs.rs:28:9: 28:16 (#0),
                             },
                             Punct {
diff --git a/tests/ui/proc-macro/keep-expr-tokens.stdout b/tests/ui/proc-macro/keep-expr-tokens.stdout
index fcd72a0e017..8e4d4785e2e 100644
--- a/tests/ui/proc-macro/keep-expr-tokens.stdout
+++ b/tests/ui/proc-macro/keep-expr-tokens.stdout
@@ -1,4 +1,5 @@
-PRINT-ATTR INPUT (DISPLAY): #[rustc_dummy] { 1 + 1 ; }
+PRINT-ATTR INPUT (DISPLAY): #[rustc_dummy] { 1 +1; }
+PRINT-ATTR DEEP-RE-COLLECTED (DISPLAY): #[rustc_dummy] { 1 + 1 ; }
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Punct {
         ch: '#',
diff --git a/tests/ui/proc-macro/macro-rules-derive-cfg.stdout b/tests/ui/proc-macro/macro-rules-derive-cfg.stdout
index aee0f966d0f..89817a1efdc 100644
--- a/tests/ui/proc-macro/macro-rules-derive-cfg.stdout
+++ b/tests/ui/proc-macro/macro-rules-derive-cfg.stdout
@@ -4,6 +4,15 @@ PRINT-DERIVE INPUT (DISPLAY): struct Foo
     [bool ;
     {
         let a = #[rustc_dummy(first)] #[rustc_dummy(second)]
+        { #![allow(unused)] 30 }; 0
+    }]
+}
+PRINT-DERIVE DEEP-RE-COLLECTED (DISPLAY): struct Foo
+{
+    val :
+    [bool ;
+    {
+        let a = #[rustc_dummy(first)] #[rustc_dummy(second)]
         { #! [allow(unused)] 30 } ; 0
     }]
 }
@@ -111,7 +120,7 @@ PRINT-DERIVE INPUT (DEBUG): TokenStream [
                                 stream: TokenStream [
                                     Punct {
                                         ch: '#',
-                                        spacing: Alone,
+                                        spacing: Joint,
                                         span: $DIR/macro-rules-derive-cfg.rs:27:5: 27:6 (#0),
                                     },
                                     Punct {
diff --git a/tests/ui/proc-macro/meta-macro-hygiene.stdout b/tests/ui/proc-macro/meta-macro-hygiene.stdout
index eeb7179e6fd..6d10cc604c2 100644
--- a/tests/ui/proc-macro/meta-macro-hygiene.stdout
+++ b/tests/ui/proc-macro/meta-macro-hygiene.stdout
@@ -32,13 +32,13 @@ macro_rules! produce_it
     */ {
     () =>
     {
-        meta_macro :: print_def_site! ($crate :: dummy! ()) ;
+        meta_macro::print_def_site!($crate::dummy!());
         // `print_def_site!` will respan the `$crate` identifier
         // with `Span::def_site()`. This should cause it to resolve
         // relative to `meta_macro`, *not* `make_macro` (despite
         // the fact that `print_def_site` is produced by a
         // `macro_rules!` macro in `make_macro`).
-    } ;
+    };
 }
 
 fn main /* 0#0 */() { ; }
diff --git a/tests/ui/proc-macro/nested-derive-cfg.stdout b/tests/ui/proc-macro/nested-derive-cfg.stdout
index 9a562c971c8..c94808c3c0f 100644
--- a/tests/ui/proc-macro/nested-derive-cfg.stdout
+++ b/tests/ui/proc-macro/nested-derive-cfg.stdout
@@ -1,4 +1,6 @@
 PRINT-DERIVE INPUT (DISPLAY): struct Foo
+{ my_array: [bool; { struct Inner { non_removed_inner_field: usize } 0 }] }
+PRINT-DERIVE DEEP-RE-COLLECTED (DISPLAY): struct Foo
 { my_array : [bool ; { struct Inner { non_removed_inner_field : usize } 0 }] }
 PRINT-DERIVE INPUT (DEBUG): TokenStream [
     Ident {
diff --git a/tests/ui/proc-macro/nonterminal-expansion.stdout b/tests/ui/proc-macro/nonterminal-expansion.stdout
index b2557af18ca..c671f623925 100644
--- a/tests/ui/proc-macro/nonterminal-expansion.stdout
+++ b/tests/ui/proc-macro/nonterminal-expansion.stdout
@@ -1,5 +1,5 @@
 PRINT-ATTR_ARGS INPUT (DISPLAY): a, line!(), b
-PRINT-ATTR_ARGS RE-COLLECTED (DISPLAY): a, line! (), b
+PRINT-ATTR_ARGS DEEP-RE-COLLECTED (DISPLAY): a, line! (), b
 PRINT-ATTR_ARGS INPUT (DEBUG): TokenStream [
     Ident {
         ident: "a",
diff --git a/tests/ui/proc-macro/nonterminal-token-hygiene.stdout b/tests/ui/proc-macro/nonterminal-token-hygiene.stdout
index c437853ac72..5c70e780f74 100644
--- a/tests/ui/proc-macro/nonterminal-token-hygiene.stdout
+++ b/tests/ui/proc-macro/nonterminal-token-hygiene.stdout
@@ -1,5 +1,5 @@
 PRINT-BANG INPUT (DISPLAY): struct S;
-PRINT-BANG RE-COLLECTED (DISPLAY): struct S ;
+PRINT-BANG DEEP-RE-COLLECTED (DISPLAY): struct S ;
 PRINT-BANG INPUT (DEBUG): TokenStream [
     Group {
         delimiter: None,
@@ -51,11 +51,11 @@ macro_rules! outer
     /*
     0#0
     */ {
-    ($item : item) =>
+    ($item:item) =>
     {
-        macro inner() { print_bang! { $item } } inner! () ;
+        macro inner() { print_bang! { $item } } inner!();
 
-    } ;
+    };
 }
 
 struct S /* 0#0 */;
diff --git a/tests/ui/proc-macro/pretty-print-tts.stdout b/tests/ui/proc-macro/pretty-print-tts.stdout
index f52e97a8604..fbe8640a01a 100644
--- a/tests/ui/proc-macro/pretty-print-tts.stdout
+++ b/tests/ui/proc-macro/pretty-print-tts.stdout
@@ -1,4 +1,5 @@
-PRINT-BANG INPUT (DISPLAY): { #! [rustc_dummy] let a = "hello".len() ; matches! (a, 5) ; }
+PRINT-BANG INPUT (DISPLAY): { #![rustc_dummy] let a = "hello".len(); matches!(a, 5); }
+PRINT-BANG DEEP-RE-COLLECTED (DISPLAY): { #! [rustc_dummy] let a = "hello".len() ; matches! (a, 5) ; }
 PRINT-BANG INPUT (DEBUG): TokenStream [
     Group {
         delimiter: Brace,
diff --git a/tests/ui/proc-macro/trailing-plus.stdout b/tests/ui/proc-macro/trailing-plus.stdout
index b90057cd6d5..b20401190d8 100644
--- a/tests/ui/proc-macro/trailing-plus.stdout
+++ b/tests/ui/proc-macro/trailing-plus.stdout
@@ -1,4 +1,5 @@
-PRINT-ATTR INPUT (DISPLAY): fn foo < T > () where T : Copy + {}
+PRINT-ATTR INPUT (DISPLAY): fn foo<T>() where T: Copy + {}
+PRINT-ATTR RE-COLLECTED (DISPLAY): fn foo < T > () where T : Copy + {}
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Ident {
         ident: "fn",
diff --git a/tests/ui/proc-macro/weird-braces.stdout b/tests/ui/proc-macro/weird-braces.stdout
index 9bf56221734..7da769ef0d2 100644
--- a/tests/ui/proc-macro/weird-braces.stdout
+++ b/tests/ui/proc-macro/weird-braces.stdout
@@ -5,7 +5,18 @@ PRINT-ATTR_ARGS INPUT (DEBUG): TokenStream [
         span: $DIR/weird-braces.rs:16:25: 16:36 (#0),
     },
 ]
-PRINT-ATTR INPUT (DISPLAY): #[print_target_and_args(second_outer)] impl Bar < { 1 > 0 } > for Foo <
+PRINT-ATTR INPUT (DISPLAY): #[print_target_and_args(second_outer)] impl Bar<{ 1 > 0 }> for Foo<{ true }>
+{
+    #![print_target_and_args(first_inner)]
+    #![print_target_and_args(second_inner)]
+}
+PRINT-ATTR RE-COLLECTED (DISPLAY): #[print_target_and_args(second_outer)] impl Bar < { 1 > 0 } > for Foo <
+{ true } >
+{
+    #![print_target_and_args(first_inner)]
+    #![print_target_and_args(second_inner)]
+}
+PRINT-ATTR DEEP-RE-COLLECTED (DISPLAY): #[print_target_and_args(second_outer)] impl Bar < { 1 > 0 } > for Foo <
 { true } >
 {
     #! [print_target_and_args(first_inner)] #!
@@ -180,7 +191,17 @@ PRINT-ATTR_ARGS INPUT (DEBUG): TokenStream [
         span: $DIR/weird-braces.rs:17:25: 17:37 (#0),
     },
 ]
-PRINT-ATTR INPUT (DISPLAY): impl Bar < { 1 > 0 } > for Foo < { true } >
+PRINT-ATTR INPUT (DISPLAY): impl Bar<{ 1 > 0 }> for Foo<{ true }>
+{
+    #![print_target_and_args(first_inner)]
+    #![print_target_and_args(second_inner)]
+}
+PRINT-ATTR RE-COLLECTED (DISPLAY): impl Bar < { 1 > 0 } > for Foo < { true } >
+{
+    #![print_target_and_args(first_inner)]
+    #![print_target_and_args(second_inner)]
+}
+PRINT-ATTR DEEP-RE-COLLECTED (DISPLAY): impl Bar < { 1 > 0 } > for Foo < { true } >
 {
     #! [print_target_and_args(first_inner)] #!
     [print_target_and_args(second_inner)]
@@ -329,7 +350,11 @@ PRINT-ATTR_ARGS INPUT (DEBUG): TokenStream [
         span: $DIR/weird-braces.rs:19:30: 19:41 (#0),
     },
 ]
-PRINT-ATTR INPUT (DISPLAY): impl Bar < { 1 > 0 } > for Foo < { true } >
+PRINT-ATTR INPUT (DISPLAY): impl Bar<{ 1 > 0 }> for Foo<{ true }>
+{ #![print_target_and_args(second_inner)] }
+PRINT-ATTR RE-COLLECTED (DISPLAY): impl Bar < { 1 > 0 } > for Foo < { true } >
+{ #![print_target_and_args(second_inner)] }
+PRINT-ATTR DEEP-RE-COLLECTED (DISPLAY): impl Bar < { 1 > 0 } > for Foo < { true } >
 { #! [print_target_and_args(second_inner)] }
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Ident {
@@ -445,7 +470,8 @@ PRINT-ATTR_ARGS INPUT (DEBUG): TokenStream [
         span: $DIR/weird-braces.rs:20:30: 20:42 (#0),
     },
 ]
-PRINT-ATTR INPUT (DISPLAY): impl Bar < { 1 > 0 } > for Foo < { true } > {}
+PRINT-ATTR INPUT (DISPLAY): impl Bar<{ 1 > 0 }> for Foo<{ true }> {}
+PRINT-ATTR RE-COLLECTED (DISPLAY): impl Bar < { 1 > 0 } > for Foo < { true } > {}
 PRINT-ATTR INPUT (DEBUG): TokenStream [
     Ident {
         ident: "impl",
diff --git a/tests/ui/rfcs/rfc-2361-dbg-macro/dbg-macro-expected-behavior.run.stderr b/tests/ui/rfcs/rfc-2361-dbg-macro/dbg-macro-expected-behavior.run.stderr
index a20a6062c13..1a26f34a52d 100644
--- a/tests/ui/rfcs/rfc-2361-dbg-macro/dbg-macro-expected-behavior.run.stderr
+++ b/tests/ui/rfcs/rfc-2361-dbg-macro/dbg-macro-expected-behavior.run.stderr
@@ -12,7 +12,7 @@
 [$DIR/dbg-macro-expected-behavior.rs:42] &a = NoCopy(
     1337,
 )
-[$DIR/dbg-macro-expected-behavior.rs:42] dbg!(& a) = NoCopy(
+[$DIR/dbg-macro-expected-behavior.rs:42] dbg!(&a) = NoCopy(
     1337,
 )
 [$DIR/dbg-macro-expected-behavior.rs:47] f(&42) = 42
diff --git a/tests/ui/rfcs/rfc-2565-param-attrs/auxiliary/param-attrs.rs b/tests/ui/rfcs/rfc-2565-param-attrs/auxiliary/param-attrs.rs
index 82c4120b4c7..67de50a1d92 100644
--- a/tests/ui/rfcs/rfc-2565-param-attrs/auxiliary/param-attrs.rs
+++ b/tests/ui/rfcs/rfc-2565-param-attrs/auxiliary/param-attrs.rs
@@ -17,27 +17,26 @@ macro_rules! checker {
     }
 }
 
-checker!(attr_extern, r#"extern "C" { fn ffi(#[a1] arg1 : i32, #[a2] ...) ; }"#);
-checker!(attr_extern_cvar, r#"unsafe extern "C" fn cvar(arg1 : i32, #[a1] mut args : ...) {}"#);
-checker!(attr_alias, "type Alias = fn(#[a1] u8, #[a2] ...) ;");
-checker!(attr_free, "fn free(#[a1] arg1 : u8) { let lam = | #[a2] W(x), #[a3] y | () ; }");
-checker!(attr_inherent_1, "fn inherent1(#[a1] self, #[a2] arg1 : u8) {}");
-checker!(attr_inherent_2, "fn inherent2(#[a1] & self, #[a2] arg1 : u8) {}");
-checker!(attr_inherent_3, "fn inherent3 < 'a > (#[a1] & 'a mut self, #[a2] arg1 : u8) {}");
-checker!(attr_inherent_4, "fn inherent4 < 'a > (#[a1] self : Box < Self >, #[a2] arg1 : u8) {}");
-checker!(attr_inherent_issue_64682, "fn inherent5(#[a1] #[a2] arg1 : u8, #[a3] arg2 : u8) {}");
-checker!(attr_trait_1, "fn trait1(#[a1] self, #[a2] arg1 : u8) ;");
-checker!(attr_trait_2, "fn trait2(#[a1] & self, #[a2] arg1 : u8) ;");
-checker!(attr_trait_3, "fn trait3 < 'a > (#[a1] & 'a mut self, #[a2] arg1 : u8) ;");
-checker!(attr_trait_4, r#"fn trait4 < 'a >
-(#[a1] self : Box < Self >, #[a2] arg1 : u8, #[a3] Vec < u8 >) ;"#);
-checker!(attr_trait_issue_64682, "fn trait5(#[a1] #[a2] arg1 : u8, #[a3] arg2 : u8) ;");
+checker!(attr_extern, r#"extern "C" { fn ffi(#[a1] arg1: i32, #[a2] ...); }"#);
+checker!(attr_extern_cvar, r#"unsafe extern "C" fn cvar(arg1: i32, #[a1] mut args: ...) {}"#);
+checker!(attr_alias, "type Alias = fn(#[a1] u8, #[a2] ...);");
+checker!(attr_free, "fn free(#[a1] arg1: u8) { let lam = |#[a2] W(x), #[a3] y| (); }");
+checker!(attr_inherent_1, "fn inherent1(#[a1] self, #[a2] arg1: u8) {}");
+checker!(attr_inherent_2, "fn inherent2(#[a1] &self, #[a2] arg1: u8) {}");
+checker!(attr_inherent_3, "fn inherent3<'a>(#[a1] &'a mut self, #[a2] arg1: u8) {}");
+checker!(attr_inherent_4, "fn inherent4<'a>(#[a1] self: Box<Self>, #[a2] arg1: u8) {}");
+checker!(attr_inherent_issue_64682, "fn inherent5(#[a1] #[a2] arg1: u8, #[a3] arg2: u8) {}");
+checker!(attr_trait_1, "fn trait1(#[a1] self, #[a2] arg1: u8);");
+checker!(attr_trait_2, "fn trait2(#[a1] &self, #[a2] arg1: u8);");
+checker!(attr_trait_3, "fn trait3<'a>(#[a1] &'a mut self, #[a2] arg1: u8);");
+checker!(attr_trait_4, r#"fn trait4<'a>(#[a1] self: Box<Self>, #[a2] arg1: u8, #[a3] Vec<u8>);"#);
+checker!(attr_trait_issue_64682, "fn trait5(#[a1] #[a2] arg1: u8, #[a3] arg2: u8);");
 checker!(rename_params, r#"impl Foo
 {
-    fn hello(#[angery(true)] a : i32, #[a2] b : i32, #[what = "how"] c : u32)
+    fn hello(#[angery(true)] a: i32, #[a2] b: i32, #[what = "how"] c: u32) {}
+    fn
+    hello2(#[a1] #[a2] a: i32, #[what = "how"] b: i32, #[angery(true)] c: u32)
     {} fn
-    hello2(#[a1] #[a2] a : i32, #[what = "how"] b : i32, #[angery(true)] c :
-    u32) {} fn
-    hello_self(#[a1] #[a2] & self, #[a1] #[a2] a : i32, #[what = "how"] b :
-    i32, #[angery(true)] c : u32) {}
+    hello_self(#[a1] #[a2] &self, #[a1] #[a2] a: i32, #[what = "how"] b: i32,
+    #[angery(true)] c: u32) {}
 }"#);
diff --git a/tests/ui/rust-2018/edition-lint-fully-qualified-paths.fixed b/tests/ui/rust-2018/edition-lint-fully-qualified-paths.fixed
index ede0c2e8eaf..3bfa6d2c254 100644
--- a/tests/ui/rust-2018/edition-lint-fully-qualified-paths.fixed
+++ b/tests/ui/rust-2018/edition-lint-fully-qualified-paths.fixed
@@ -1,6 +1,5 @@
 // run-rustfix
 
-#![feature(rust_2018_preview)]
 #![deny(absolute_paths_not_starting_with_crate)]
 
 mod foo {
diff --git a/tests/ui/rust-2018/edition-lint-fully-qualified-paths.rs b/tests/ui/rust-2018/edition-lint-fully-qualified-paths.rs
index 48b091ddb45..14039626545 100644
--- a/tests/ui/rust-2018/edition-lint-fully-qualified-paths.rs
+++ b/tests/ui/rust-2018/edition-lint-fully-qualified-paths.rs
@@ -1,6 +1,5 @@
 // run-rustfix
 
-#![feature(rust_2018_preview)]
 #![deny(absolute_paths_not_starting_with_crate)]
 
 mod foo {
diff --git a/tests/ui/rust-2018/edition-lint-fully-qualified-paths.stderr b/tests/ui/rust-2018/edition-lint-fully-qualified-paths.stderr
index c0a322edcd6..036b9ccab4f 100644
--- a/tests/ui/rust-2018/edition-lint-fully-qualified-paths.stderr
+++ b/tests/ui/rust-2018/edition-lint-fully-qualified-paths.stderr
@@ -1,5 +1,5 @@
 error: absolute paths must start with `self`, `super`, `crate`, or an external crate name in the 2018 edition
-  --> $DIR/edition-lint-fully-qualified-paths.rs:19:25
+  --> $DIR/edition-lint-fully-qualified-paths.rs:18:25
    |
 LL |     let _: <foo::Baz as ::foo::Foo>::Bar = ();
    |                         ^^^^^^^^^^ help: use `crate`: `crate::foo::Foo`
@@ -7,13 +7,13 @@ LL |     let _: <foo::Baz as ::foo::Foo>::Bar = ();
    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
    = note: for more information, see issue #53130 <https://github.com/rust-lang/rust/issues/53130>
 note: the lint level is defined here
-  --> $DIR/edition-lint-fully-qualified-paths.rs:4:9
+  --> $DIR/edition-lint-fully-qualified-paths.rs:3:9
    |
 LL | #![deny(absolute_paths_not_starting_with_crate)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: absolute paths must start with `self`, `super`, `crate`, or an external crate name in the 2018 edition
-  --> $DIR/edition-lint-fully-qualified-paths.rs:19:25
+  --> $DIR/edition-lint-fully-qualified-paths.rs:18:25
    |
 LL |     let _: <foo::Baz as ::foo::Foo>::Bar = ();
    |                         ^^^^^^^^^^ help: use `crate`: `crate::foo::Foo`
@@ -23,7 +23,7 @@ LL |     let _: <foo::Baz as ::foo::Foo>::Bar = ();
    = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
 
 error: absolute paths must start with `self`, `super`, `crate`, or an external crate name in the 2018 edition
-  --> $DIR/edition-lint-fully-qualified-paths.rs:25:13
+  --> $DIR/edition-lint-fully-qualified-paths.rs:24:13
    |
 LL |     let _: <::foo::Baz as foo::Foo>::Bar = ();
    |             ^^^^^^^^^^ help: use `crate`: `crate::foo::Baz`
diff --git a/tests/ui/rust-2018/edition-lint-nested-empty-paths.fixed b/tests/ui/rust-2018/edition-lint-nested-empty-paths.fixed
index f25d46ce30d..fd23e9f5562 100644
--- a/tests/ui/rust-2018/edition-lint-nested-empty-paths.fixed
+++ b/tests/ui/rust-2018/edition-lint-nested-empty-paths.fixed
@@ -1,6 +1,5 @@
 // run-rustfix
 
-#![feature(rust_2018_preview)]
 #![deny(absolute_paths_not_starting_with_crate)]
 #![allow(unused_imports)]
 #![allow(dead_code)]
diff --git a/tests/ui/rust-2018/edition-lint-nested-empty-paths.rs b/tests/ui/rust-2018/edition-lint-nested-empty-paths.rs
index 9be1680c1ce..f3fb012a584 100644
--- a/tests/ui/rust-2018/edition-lint-nested-empty-paths.rs
+++ b/tests/ui/rust-2018/edition-lint-nested-empty-paths.rs
@@ -1,6 +1,5 @@
 // run-rustfix
 
-#![feature(rust_2018_preview)]
 #![deny(absolute_paths_not_starting_with_crate)]
 #![allow(unused_imports)]
 #![allow(dead_code)]
diff --git a/tests/ui/rust-2018/edition-lint-nested-empty-paths.stderr b/tests/ui/rust-2018/edition-lint-nested-empty-paths.stderr
index 041572be844..4174c2fa9ad 100644
--- a/tests/ui/rust-2018/edition-lint-nested-empty-paths.stderr
+++ b/tests/ui/rust-2018/edition-lint-nested-empty-paths.stderr
@@ -1,5 +1,5 @@
 error: absolute paths must start with `self`, `super`, `crate`, or an external crate name in the 2018 edition
-  --> $DIR/edition-lint-nested-empty-paths.rs:17:5
+  --> $DIR/edition-lint-nested-empty-paths.rs:16:5
    |
 LL | use foo::{bar::{baz::{}}};
    |     ^^^^^^^^^^^^^^^^^^^^^ help: use `crate`: `crate::foo::{bar::{baz::{}}}`
@@ -7,13 +7,13 @@ LL | use foo::{bar::{baz::{}}};
    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
    = note: for more information, see issue #53130 <https://github.com/rust-lang/rust/issues/53130>
 note: the lint level is defined here
-  --> $DIR/edition-lint-nested-empty-paths.rs:4:9
+  --> $DIR/edition-lint-nested-empty-paths.rs:3:9
    |
 LL | #![deny(absolute_paths_not_starting_with_crate)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: absolute paths must start with `self`, `super`, `crate`, or an external crate name in the 2018 edition
-  --> $DIR/edition-lint-nested-empty-paths.rs:21:5
+  --> $DIR/edition-lint-nested-empty-paths.rs:20:5
    |
 LL | use foo::{bar::{XX, baz::{}}};
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `crate`: `crate::foo::{bar::{XX, baz::{}}}`
@@ -22,7 +22,7 @@ LL | use foo::{bar::{XX, baz::{}}};
    = note: for more information, see issue #53130 <https://github.com/rust-lang/rust/issues/53130>
 
 error: absolute paths must start with `self`, `super`, `crate`, or an external crate name in the 2018 edition
-  --> $DIR/edition-lint-nested-empty-paths.rs:21:5
+  --> $DIR/edition-lint-nested-empty-paths.rs:20:5
    |
 LL | use foo::{bar::{XX, baz::{}}};
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `crate`: `crate::foo::{bar::{XX, baz::{}}}`
@@ -32,7 +32,7 @@ LL | use foo::{bar::{XX, baz::{}}};
    = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
 
 error: absolute paths must start with `self`, `super`, `crate`, or an external crate name in the 2018 edition
-  --> $DIR/edition-lint-nested-empty-paths.rs:27:5
+  --> $DIR/edition-lint-nested-empty-paths.rs:26:5
    |
 LL | use foo::{bar::{baz::{}, baz1::{}}};
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `crate`: `crate::foo::{bar::{baz::{}, baz1::{}}}`
@@ -41,7 +41,7 @@ LL | use foo::{bar::{baz::{}, baz1::{}}};
    = note: for more information, see issue #53130 <https://github.com/rust-lang/rust/issues/53130>
 
 error: absolute paths must start with `self`, `super`, `crate`, or an external crate name in the 2018 edition
-  --> $DIR/edition-lint-nested-empty-paths.rs:27:5
+  --> $DIR/edition-lint-nested-empty-paths.rs:26:5
    |
 LL | use foo::{bar::{baz::{}, baz1::{}}};
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `crate`: `crate::foo::{bar::{baz::{}, baz1::{}}}`
diff --git a/tests/ui/rust-2018/edition-lint-nested-paths.fixed b/tests/ui/rust-2018/edition-lint-nested-paths.fixed
index a04937ae8ee..0e47e70bb02 100644
--- a/tests/ui/rust-2018/edition-lint-nested-paths.fixed
+++ b/tests/ui/rust-2018/edition-lint-nested-paths.fixed
@@ -1,6 +1,5 @@
 // run-rustfix
 
-#![feature(rust_2018_preview)]
 #![deny(absolute_paths_not_starting_with_crate)]
 
 use crate::foo::{a, b};
diff --git a/tests/ui/rust-2018/edition-lint-nested-paths.rs b/tests/ui/rust-2018/edition-lint-nested-paths.rs
index e622a8e24be..d261c10e36d 100644
--- a/tests/ui/rust-2018/edition-lint-nested-paths.rs
+++ b/tests/ui/rust-2018/edition-lint-nested-paths.rs
@@ -1,6 +1,5 @@
 // run-rustfix
 
-#![feature(rust_2018_preview)]
 #![deny(absolute_paths_not_starting_with_crate)]
 
 use foo::{a, b};
diff --git a/tests/ui/rust-2018/edition-lint-nested-paths.stderr b/tests/ui/rust-2018/edition-lint-nested-paths.stderr
index 4a70bb7e5c8..d059a2533a9 100644
--- a/tests/ui/rust-2018/edition-lint-nested-paths.stderr
+++ b/tests/ui/rust-2018/edition-lint-nested-paths.stderr
@@ -1,5 +1,5 @@
 error: absolute paths must start with `self`, `super`, `crate`, or an external crate name in the 2018 edition
-  --> $DIR/edition-lint-nested-paths.rs:6:5
+  --> $DIR/edition-lint-nested-paths.rs:5:5
    |
 LL | use foo::{a, b};
    |     ^^^^^^^^^^^ help: use `crate`: `crate::foo::{a, b}`
@@ -7,13 +7,13 @@ LL | use foo::{a, b};
    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
    = note: for more information, see issue #53130 <https://github.com/rust-lang/rust/issues/53130>
 note: the lint level is defined here
-  --> $DIR/edition-lint-nested-paths.rs:4:9
+  --> $DIR/edition-lint-nested-paths.rs:3:9
    |
 LL | #![deny(absolute_paths_not_starting_with_crate)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: absolute paths must start with `self`, `super`, `crate`, or an external crate name in the 2018 edition
-  --> $DIR/edition-lint-nested-paths.rs:6:5
+  --> $DIR/edition-lint-nested-paths.rs:5:5
    |
 LL | use foo::{a, b};
    |     ^^^^^^^^^^^ help: use `crate`: `crate::foo::{a, b}`
@@ -23,7 +23,7 @@ LL | use foo::{a, b};
    = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
 
 error: absolute paths must start with `self`, `super`, `crate`, or an external crate name in the 2018 edition
-  --> $DIR/edition-lint-nested-paths.rs:23:13
+  --> $DIR/edition-lint-nested-paths.rs:22:13
    |
 LL |         use foo::{self as x, c};
    |             ^^^^^^^^^^^^^^^^^^^ help: use `crate`: `crate::foo::{self as x, c}`
@@ -32,7 +32,7 @@ LL |         use foo::{self as x, c};
    = note: for more information, see issue #53130 <https://github.com/rust-lang/rust/issues/53130>
 
 error: absolute paths must start with `self`, `super`, `crate`, or an external crate name in the 2018 edition
-  --> $DIR/edition-lint-nested-paths.rs:23:13
+  --> $DIR/edition-lint-nested-paths.rs:22:13
    |
 LL |         use foo::{self as x, c};
    |             ^^^^^^^^^^^^^^^^^^^ help: use `crate`: `crate::foo::{self as x, c}`
diff --git a/tests/ui/rust-2018/edition-lint-paths.fixed b/tests/ui/rust-2018/edition-lint-paths.fixed
index 47f82c51dae..5057453c926 100644
--- a/tests/ui/rust-2018/edition-lint-paths.fixed
+++ b/tests/ui/rust-2018/edition-lint-paths.fixed
@@ -1,7 +1,6 @@
 // aux-build:edition-lint-paths.rs
 // run-rustfix
 
-#![feature(rust_2018_preview)]
 #![deny(absolute_paths_not_starting_with_crate)]
 #![allow(unused)]
 
diff --git a/tests/ui/rust-2018/edition-lint-paths.rs b/tests/ui/rust-2018/edition-lint-paths.rs
index e278983da4a..2c4a070ce83 100644
--- a/tests/ui/rust-2018/edition-lint-paths.rs
+++ b/tests/ui/rust-2018/edition-lint-paths.rs
@@ -1,7 +1,6 @@
 // aux-build:edition-lint-paths.rs
 // run-rustfix
 
-#![feature(rust_2018_preview)]
 #![deny(absolute_paths_not_starting_with_crate)]
 #![allow(unused)]
 
diff --git a/tests/ui/rust-2018/edition-lint-paths.stderr b/tests/ui/rust-2018/edition-lint-paths.stderr
index fde17338d98..553a3bfdaa8 100644
--- a/tests/ui/rust-2018/edition-lint-paths.stderr
+++ b/tests/ui/rust-2018/edition-lint-paths.stderr
@@ -1,5 +1,5 @@
 error: absolute paths must start with `self`, `super`, `crate`, or an external crate name in the 2018 edition
-  --> $DIR/edition-lint-paths.rs:12:9
+  --> $DIR/edition-lint-paths.rs:11:9
    |
 LL |     use bar::Bar;
    |         ^^^^^^^^ help: use `crate`: `crate::bar::Bar`
@@ -7,13 +7,13 @@ LL |     use bar::Bar;
    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
    = note: for more information, see issue #53130 <https://github.com/rust-lang/rust/issues/53130>
 note: the lint level is defined here
-  --> $DIR/edition-lint-paths.rs:5:9
+  --> $DIR/edition-lint-paths.rs:4:9
    |
 LL | #![deny(absolute_paths_not_starting_with_crate)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: absolute paths must start with `self`, `super`, `crate`, or an external crate name in the 2018 edition
-  --> $DIR/edition-lint-paths.rs:19:9
+  --> $DIR/edition-lint-paths.rs:18:9
    |
 LL |     use bar;
    |         ^^^ help: use `crate`: `crate::bar`
@@ -22,7 +22,7 @@ LL |     use bar;
    = note: for more information, see issue #53130 <https://github.com/rust-lang/rust/issues/53130>
 
 error: absolute paths must start with `self`, `super`, `crate`, or an external crate name in the 2018 edition
-  --> $DIR/edition-lint-paths.rs:25:9
+  --> $DIR/edition-lint-paths.rs:24:9
    |
 LL |     use {main, Bar as SomethingElse};
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `crate`: `crate::{main, Bar as SomethingElse}`
@@ -31,7 +31,7 @@ LL |     use {main, Bar as SomethingElse};
    = note: for more information, see issue #53130 <https://github.com/rust-lang/rust/issues/53130>
 
 error: absolute paths must start with `self`, `super`, `crate`, or an external crate name in the 2018 edition
-  --> $DIR/edition-lint-paths.rs:25:9
+  --> $DIR/edition-lint-paths.rs:24:9
    |
 LL |     use {main, Bar as SomethingElse};
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `crate`: `crate::{main, Bar as SomethingElse}`
@@ -41,7 +41,7 @@ LL |     use {main, Bar as SomethingElse};
    = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
 
 error: absolute paths must start with `self`, `super`, `crate`, or an external crate name in the 2018 edition
-  --> $DIR/edition-lint-paths.rs:25:9
+  --> $DIR/edition-lint-paths.rs:24:9
    |
 LL |     use {main, Bar as SomethingElse};
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `crate`: `crate::{main, Bar as SomethingElse}`
@@ -51,7 +51,7 @@ LL |     use {main, Bar as SomethingElse};
    = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
 
 error: absolute paths must start with `self`, `super`, `crate`, or an external crate name in the 2018 edition
-  --> $DIR/edition-lint-paths.rs:40:5
+  --> $DIR/edition-lint-paths.rs:39:5
    |
 LL | use bar::Bar;
    |     ^^^^^^^^ help: use `crate`: `crate::bar::Bar`
@@ -60,7 +60,7 @@ LL | use bar::Bar;
    = note: for more information, see issue #53130 <https://github.com/rust-lang/rust/issues/53130>
 
 error: absolute paths must start with `self`, `super`, `crate`, or an external crate name in the 2018 edition
-  --> $DIR/edition-lint-paths.rs:52:9
+  --> $DIR/edition-lint-paths.rs:51:9
    |
 LL |     use *;
    |         ^ help: use `crate`: `crate::*`
@@ -69,7 +69,7 @@ LL |     use *;
    = note: for more information, see issue #53130 <https://github.com/rust-lang/rust/issues/53130>
 
 error: absolute paths must start with `self`, `super`, `crate`, or an external crate name in the 2018 edition
-  --> $DIR/edition-lint-paths.rs:57:6
+  --> $DIR/edition-lint-paths.rs:56:6
    |
 LL | impl ::foo::SomeTrait for u32 {}
    |      ^^^^^^^^^^^^^^^^ help: use `crate`: `crate::foo::SomeTrait`
@@ -78,7 +78,7 @@ LL | impl ::foo::SomeTrait for u32 {}
    = note: for more information, see issue #53130 <https://github.com/rust-lang/rust/issues/53130>
 
 error: absolute paths must start with `self`, `super`, `crate`, or an external crate name in the 2018 edition
-  --> $DIR/edition-lint-paths.rs:62:13
+  --> $DIR/edition-lint-paths.rs:61:13
    |
 LL |     let x = ::bar::Bar;
    |             ^^^^^^^^^^ help: use `crate`: `crate::bar::Bar`
diff --git a/tests/ui/rust-2018/extern-crate-idiomatic.fixed b/tests/ui/rust-2018/extern-crate-idiomatic.fixed
index 3111b1dabcb..6a0639099b1 100644
--- a/tests/ui/rust-2018/extern-crate-idiomatic.fixed
+++ b/tests/ui/rust-2018/extern-crate-idiomatic.fixed
@@ -6,7 +6,6 @@
 // The "normal case". Ideally we would remove the `extern crate` here,
 // but we don't.
 
-#![feature(rust_2018_preview)]
 #![deny(absolute_paths_not_starting_with_crate)]
 
 extern crate edition_lint_paths;
diff --git a/tests/ui/rust-2018/extern-crate-idiomatic.rs b/tests/ui/rust-2018/extern-crate-idiomatic.rs
index 3111b1dabcb..6a0639099b1 100644
--- a/tests/ui/rust-2018/extern-crate-idiomatic.rs
+++ b/tests/ui/rust-2018/extern-crate-idiomatic.rs
@@ -6,7 +6,6 @@
 // The "normal case". Ideally we would remove the `extern crate` here,
 // but we don't.
 
-#![feature(rust_2018_preview)]
 #![deny(absolute_paths_not_starting_with_crate)]
 
 extern crate edition_lint_paths;
diff --git a/tests/ui/rust-2018/extern-crate-referenced-by-self-path.fixed b/tests/ui/rust-2018/extern-crate-referenced-by-self-path.fixed
index 11b9a67ed70..c4a3dd9415c 100644
--- a/tests/ui/rust-2018/extern-crate-referenced-by-self-path.fixed
+++ b/tests/ui/rust-2018/extern-crate-referenced-by-self-path.fixed
@@ -6,7 +6,6 @@
 // rather than being accessed directly. Unless we rewrite that path,
 // we can't drop the extern crate.
 
-#![feature(rust_2018_preview)]
 #![deny(absolute_paths_not_starting_with_crate)]
 
 extern crate edition_lint_paths;
diff --git a/tests/ui/rust-2018/extern-crate-referenced-by-self-path.rs b/tests/ui/rust-2018/extern-crate-referenced-by-self-path.rs
index 11b9a67ed70..c4a3dd9415c 100644
--- a/tests/ui/rust-2018/extern-crate-referenced-by-self-path.rs
+++ b/tests/ui/rust-2018/extern-crate-referenced-by-self-path.rs
@@ -6,7 +6,6 @@
 // rather than being accessed directly. Unless we rewrite that path,
 // we can't drop the extern crate.
 
-#![feature(rust_2018_preview)]
 #![deny(absolute_paths_not_starting_with_crate)]
 
 extern crate edition_lint_paths;
diff --git a/tests/ui/rust-2018/extern-crate-rename.fixed b/tests/ui/rust-2018/extern-crate-rename.fixed
index ea832ef3e7d..5e2bf64a2e2 100644
--- a/tests/ui/rust-2018/extern-crate-rename.fixed
+++ b/tests/ui/rust-2018/extern-crate-rename.fixed
@@ -4,7 +4,6 @@
 // Oddball: crate is renamed, making it harder for us to rewrite
 // paths. We don't (and we leave the `extern crate` in place).
 
-#![feature(rust_2018_preview)]
 #![deny(absolute_paths_not_starting_with_crate)]
 
 extern crate edition_lint_paths as my_crate;
diff --git a/tests/ui/rust-2018/extern-crate-rename.rs b/tests/ui/rust-2018/extern-crate-rename.rs
index b1f617dd884..290fcd6b7db 100644
--- a/tests/ui/rust-2018/extern-crate-rename.rs
+++ b/tests/ui/rust-2018/extern-crate-rename.rs
@@ -4,7 +4,6 @@
 // Oddball: crate is renamed, making it harder for us to rewrite
 // paths. We don't (and we leave the `extern crate` in place).
 
-#![feature(rust_2018_preview)]
 #![deny(absolute_paths_not_starting_with_crate)]
 
 extern crate edition_lint_paths as my_crate;
diff --git a/tests/ui/rust-2018/extern-crate-rename.stderr b/tests/ui/rust-2018/extern-crate-rename.stderr
index 36986c89c62..6b251208030 100644
--- a/tests/ui/rust-2018/extern-crate-rename.stderr
+++ b/tests/ui/rust-2018/extern-crate-rename.stderr
@@ -1,5 +1,5 @@
 error: absolute paths must start with `self`, `super`, `crate`, or an external crate name in the 2018 edition
-  --> $DIR/extern-crate-rename.rs:12:5
+  --> $DIR/extern-crate-rename.rs:11:5
    |
 LL | use my_crate::foo;
    |     ^^^^^^^^^^^^^ help: use `crate`: `crate::my_crate::foo`
@@ -7,7 +7,7 @@ LL | use my_crate::foo;
    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
    = note: for more information, see issue #53130 <https://github.com/rust-lang/rust/issues/53130>
 note: the lint level is defined here
-  --> $DIR/extern-crate-rename.rs:8:9
+  --> $DIR/extern-crate-rename.rs:7:9
    |
 LL | #![deny(absolute_paths_not_starting_with_crate)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/tests/ui/rust-2018/extern-crate-submod.fixed b/tests/ui/rust-2018/extern-crate-submod.fixed
index 9b0b0dd8ee1..dd31710414c 100644
--- a/tests/ui/rust-2018/extern-crate-submod.fixed
+++ b/tests/ui/rust-2018/extern-crate-submod.fixed
@@ -5,7 +5,6 @@
 // us to rewrite paths. We don't (and we leave the `extern crate` in
 // place).
 
-#![feature(rust_2018_preview)]
 #![deny(absolute_paths_not_starting_with_crate)]
 
 mod m {
diff --git a/tests/ui/rust-2018/extern-crate-submod.rs b/tests/ui/rust-2018/extern-crate-submod.rs
index dfce9128c51..cb0cd7a8331 100644
--- a/tests/ui/rust-2018/extern-crate-submod.rs
+++ b/tests/ui/rust-2018/extern-crate-submod.rs
@@ -5,7 +5,6 @@
 // us to rewrite paths. We don't (and we leave the `extern crate` in
 // place).
 
-#![feature(rust_2018_preview)]
 #![deny(absolute_paths_not_starting_with_crate)]
 
 mod m {
diff --git a/tests/ui/rust-2018/extern-crate-submod.stderr b/tests/ui/rust-2018/extern-crate-submod.stderr
index 85e26d72a67..0d45d32d568 100644
--- a/tests/ui/rust-2018/extern-crate-submod.stderr
+++ b/tests/ui/rust-2018/extern-crate-submod.stderr
@@ -1,5 +1,5 @@
 error: absolute paths must start with `self`, `super`, `crate`, or an external crate name in the 2018 edition
-  --> $DIR/extern-crate-submod.rs:19:5
+  --> $DIR/extern-crate-submod.rs:18:5
    |
 LL | use m::edition_lint_paths::foo;
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `crate`: `crate::m::edition_lint_paths::foo`
@@ -7,7 +7,7 @@ LL | use m::edition_lint_paths::foo;
    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
    = note: for more information, see issue #53130 <https://github.com/rust-lang/rust/issues/53130>
 note: the lint level is defined here
-  --> $DIR/extern-crate-submod.rs:9:9
+  --> $DIR/extern-crate-submod.rs:8:9
    |
 LL | #![deny(absolute_paths_not_starting_with_crate)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/tests/ui/rust-2018/issue-51008-1.rs b/tests/ui/rust-2018/issue-51008-1.rs
index 8ae5e827846..da7b8ef65c5 100644
--- a/tests/ui/rust-2018/issue-51008-1.rs
+++ b/tests/ui/rust-2018/issue-51008-1.rs
@@ -4,8 +4,6 @@
 //
 // run-pass
 
-#![feature(rust_2018_preview)]
-
 trait A {
 
 }
diff --git a/tests/ui/rust-2018/issue-51008.rs b/tests/ui/rust-2018/issue-51008.rs
index b62609e329d..56517b9adee 100644
--- a/tests/ui/rust-2018/issue-51008.rs
+++ b/tests/ui/rust-2018/issue-51008.rs
@@ -4,8 +4,6 @@
 //
 // run-pass
 
-#![feature(rust_2018_preview)]
-
 trait A {
 
 }
diff --git a/tests/ui/rust-2018/proc-macro-crate-in-paths.rs b/tests/ui/rust-2018/proc-macro-crate-in-paths.rs
index 2d4cb6514ec..37e00a3936e 100644
--- a/tests/ui/rust-2018/proc-macro-crate-in-paths.rs
+++ b/tests/ui/rust-2018/proc-macro-crate-in-paths.rs
@@ -4,7 +4,6 @@
 
 #![crate_type = "proc-macro"]
 #![deny(rust_2018_compatibility)]
-#![feature(rust_2018_preview)]
 
 extern crate proc_macro;
 
diff --git a/tests/ui/rust-2018/suggestions-not-always-applicable.fixed b/tests/ui/rust-2018/suggestions-not-always-applicable.fixed
index f5afbad9f78..d9e39a3b748 100644
--- a/tests/ui/rust-2018/suggestions-not-always-applicable.fixed
+++ b/tests/ui/rust-2018/suggestions-not-always-applicable.fixed
@@ -4,7 +4,6 @@
 // rustfix-only-machine-applicable
 // check-pass
 
-#![feature(rust_2018_preview)]
 #![warn(rust_2018_compatibility)]
 
 extern crate suggestions_not_always_applicable as foo;
diff --git a/tests/ui/rust-2018/suggestions-not-always-applicable.rs b/tests/ui/rust-2018/suggestions-not-always-applicable.rs
index f5afbad9f78..d9e39a3b748 100644
--- a/tests/ui/rust-2018/suggestions-not-always-applicable.rs
+++ b/tests/ui/rust-2018/suggestions-not-always-applicable.rs
@@ -4,7 +4,6 @@
 // rustfix-only-machine-applicable
 // check-pass
 
-#![feature(rust_2018_preview)]
 #![warn(rust_2018_compatibility)]
 
 extern crate suggestions_not_always_applicable as foo;
diff --git a/tests/ui/simd/repr_packed.rs b/tests/ui/simd/repr_packed.rs
new file mode 100644
index 00000000000..df2d59a58b8
--- /dev/null
+++ b/tests/ui/simd/repr_packed.rs
@@ -0,0 +1,59 @@
+// run-pass
+
+#![feature(repr_simd, platform_intrinsics)]
+#![allow(non_camel_case_types)]
+
+#[repr(simd, packed)]
+struct Simd<T, const N: usize>([T; N]);
+
+#[repr(simd)]
+struct FullSimd<T, const N: usize>([T; N]);
+
+fn check_size_align<T, const N: usize>() {
+    use std::mem;
+    assert_eq!(mem::size_of::<Simd<T, N>>(), mem::size_of::<[T; N]>());
+    assert_eq!(mem::size_of::<Simd<T, N>>() % mem::align_of::<Simd<T, N>>(), 0);
+}
+
+fn check_ty<T>() {
+    check_size_align::<T, 1>();
+    check_size_align::<T, 2>();
+    check_size_align::<T, 3>();
+    check_size_align::<T, 4>();
+    check_size_align::<T, 8>();
+    check_size_align::<T, 9>();
+    check_size_align::<T, 15>();
+}
+
+extern "platform-intrinsic" {
+    fn simd_add<T>(a: T, b: T) -> T;
+}
+
+fn main() {
+    check_ty::<u8>();
+    check_ty::<i16>();
+    check_ty::<u32>();
+    check_ty::<i64>();
+    check_ty::<usize>();
+    check_ty::<f32>();
+    check_ty::<f64>();
+
+    unsafe {
+        // powers-of-two have no padding and work as usual
+        let x: Simd<f64, 4> =
+            simd_add(Simd::<f64, 4>([0., 1., 2., 3.]), Simd::<f64, 4>([2., 2., 2., 2.]));
+        assert_eq!(std::mem::transmute::<_, [f64; 4]>(x), [2., 3., 4., 5.]);
+
+        // non-powers-of-two have padding and need to be expanded to full vectors
+        fn load<T, const N: usize>(v: Simd<T, N>) -> FullSimd<T, N> {
+            unsafe {
+                let mut tmp = core::mem::MaybeUninit::<FullSimd<T, N>>::uninit();
+                std::ptr::copy_nonoverlapping(&v as *const _, tmp.as_mut_ptr().cast(), 1);
+                tmp.assume_init()
+            }
+        }
+        let x: FullSimd<f64, 3> =
+            simd_add(load(Simd::<f64, 3>([0., 1., 2.])), load(Simd::<f64, 3>([2., 2., 2.])));
+        assert_eq!(x.0, [2., 3., 4.]);
+    }
+}
diff --git a/tests/ui/tool_lints_2018_preview.rs b/tests/ui/tool_lints_2018_preview.rs
index 190f0b99dc8..e467d34376f 100644
--- a/tests/ui/tool_lints_2018_preview.rs
+++ b/tests/ui/tool_lints_2018_preview.rs
@@ -1,6 +1,5 @@
 // run-pass
 
-#![feature(rust_2018_preview)]
 #![deny(unknown_lints)]
 
 #[allow(clippy::almost_swapped)]