Merge from rustc

compiler/rustc_abi/src/lib.rs

@@ -1,7 +1,7 @@
 #![cfg_attr(feature = "nightly", feature(step_trait))]
 #![cfg_attr(feature = "nightly", allow(internal_features))]
-#![cfg_attr(all(not(bootstrap), feature = "nightly"), doc(rust_logo))]
-#![cfg_attr(all(not(bootstrap), feature = "nightly"), feature(rustdoc_internals))]
+#![cfg_attr(feature = "nightly", doc(rust_logo))]
+#![cfg_attr(feature = "nightly", feature(rustdoc_internals))]
 
 use std::fmt;
 use std::num::{NonZeroUsize, ParseIntError};

compiler/rustc_arena/src/lib.rs

@@ -11,8 +11,8 @@
     html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/",
     test(no_crate_inject, attr(deny(warnings)))
 )]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
+#![doc(rust_logo)]
+#![feature(rustdoc_internals)]
 #![feature(core_intrinsics)]
 #![feature(dropck_eyepatch)]
 #![feature(new_uninit)]

compiler/rustc_ast/src/lib.rs

@@ -8,9 +8,9 @@
     html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/",
     test(attr(deny(warnings)))
 )]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), allow(internal_features))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
+#![doc(rust_logo)]
+#![allow(internal_features)]
+#![feature(rustdoc_internals)]
 #![feature(associated_type_bounds)]
 #![feature(box_patterns)]
 #![feature(const_trait_impl)]

compiler/rustc_ast_lowering/src/lib.rs

@@ -30,9 +30,9 @@
 //! get confused if the spans from leaf AST nodes occur in multiple places
 //! in the HIR, especially for multiple identifiers.
 
-#![cfg_attr(not(bootstrap), allow(internal_features))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
+#![allow(internal_features)]
+#![feature(rustdoc_internals)]
+#![doc(rust_logo)]
 #![feature(box_patterns)]
 #![feature(let_chains)]
 #![feature(never_type)]

compiler/rustc_ast_passes/src/ast_validation.rs

@@ -1213,8 +1213,12 @@ impl<'a> Visitor<'a> for AstValidator<'a> {
                         DisallowTildeConstContext::Fn(FnKind::Fn(_, ident, ..)) => {
                             errors::TildeConstReason::Function { ident: ident.span }
                         }
-                        &DisallowTildeConstContext::Trait(span) => errors::TildeConstReason::Trait { span },
-                        &DisallowTildeConstContext::Impl(span) => errors::TildeConstReason::Impl { span },
+                        &DisallowTildeConstContext::Trait(span) => {
+                            errors::TildeConstReason::Trait { span }
+                        }
+                        &DisallowTildeConstContext::Impl(span) => {
+                            errors::TildeConstReason::Impl { span }
+                        }
                         DisallowTildeConstContext::TraitObject => {
                             errors::TildeConstReason::TraitObject
                         }
@@ -1446,9 +1450,7 @@ fn deny_equality_constraints(
                     id: rustc_ast::node_id::DUMMY_NODE_ID,
                     ident: *ident,
                     gen_args,
-                    kind: AssocConstraintKind::Equality {
-                        term: predicate.rhs_ty.clone().into(),
-                    },
+                    kind: AssocConstraintKind::Equality { term: predicate.rhs_ty.clone().into() },
                     span: ident.span,
                 });
                 // Add `<Bar = RhsTy>` to `Foo`.
@@ -1461,11 +1463,7 @@ fn deny_equality_constraints(
                     },
                     empty_args => {
                         *empty_args = Some(
-                            AngleBracketedArgs {
-                                span: ident.span,
-                                args: thin_vec![arg],
-                            }
-                            .into(),
+                            AngleBracketedArgs { span: ident.span, args: thin_vec![arg] }.into(),
                         );
                     }
                 }

compiler/rustc_ast_passes/src/lib.rs

@@ -4,9 +4,9 @@
 //!
 //! The crate also contains other misc AST visitors, e.g. `node_count` and `show_span`.
 
-#![cfg_attr(not(bootstrap), allow(internal_features))]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
+#![allow(internal_features)]
+#![doc(rust_logo)]
+#![feature(rustdoc_internals)]
 #![feature(box_patterns)]
 #![feature(if_let_guard)]
 #![feature(iter_is_partitioned)]

compiler/rustc_ast_pretty/src/lib.rs

@@ -1,6 +1,6 @@
-#![cfg_attr(not(bootstrap), allow(internal_features))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
+#![allow(internal_features)]
+#![feature(rustdoc_internals)]
+#![doc(rust_logo)]
 #![deny(rustc::untranslatable_diagnostic)]
 #![deny(rustc::diagnostic_outside_of_impl)]
 #![feature(associated_type_bounds)]

compiler/rustc_attr/src/lib.rs

@@ -4,9 +4,9 @@
 //! The goal is to move the definition of `MetaItem` and things that don't need to be in `syntax`
 //! to this crate.
 
-#![cfg_attr(not(bootstrap), allow(internal_features))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
+#![allow(internal_features)]
+#![feature(rustdoc_internals)]
+#![doc(rust_logo)]
 #![feature(let_chains)]
 #![deny(rustc::untranslatable_diagnostic)]
 #![deny(rustc::diagnostic_outside_of_impl)]

compiler/rustc_baked_icu_data/src/lib.rs

@@ -20,9 +20,9 @@
 //! --cldr-tag latest --icuexport-tag latest -o src/data
 //! ```
 
-#![cfg_attr(not(bootstrap), allow(internal_features))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
+#![allow(internal_features)]
+#![feature(rustdoc_internals)]
+#![doc(rust_logo)]
 #![allow(elided_lifetimes_in_paths)]
 
 mod data {

compiler/rustc_borrowck/src/diagnostics/bound_region_errors.rs

@@ -10,6 +10,8 @@ use rustc_infer::infer::RegionVariableOrigin;
 use rustc_infer::infer::{InferCtxt, RegionResolutionError, SubregionOrigin, TyCtxtInferExt as _};
 use rustc_infer::traits::ObligationCause;
 use rustc_middle::ty::error::TypeError;
+use rustc_middle::ty::RePlaceholder;
+use rustc_middle::ty::Region;
 use rustc_middle::ty::RegionVid;
 use rustc_middle::ty::UniverseIndex;
 use rustc_middle::ty::{self, Ty, TyCtxt, TypeFoldable};
@@ -205,6 +207,8 @@ trait TypeOpInfo<'tcx> {
         let span = cause.span;
         let nice_error = self.nice_error(mbcx, cause, placeholder_region, error_region);
 
+        debug!(?nice_error);
+
         if let Some(nice_error) = nice_error {
             mbcx.buffer_error(nice_error);
         } else {
@@ -404,19 +408,41 @@ fn try_extract_error_from_region_constraints<'tcx>(
     mut region_var_origin: impl FnMut(RegionVid) -> RegionVariableOrigin,
     mut universe_of_region: impl FnMut(RegionVid) -> UniverseIndex,
 ) -> Option<DiagnosticBuilder<'tcx, ErrorGuaranteed>> {
-    let (sub_region, cause) =
-        region_constraints.constraints.iter().find_map(|(constraint, cause)| {
+    let matches =
+        |a_region: Region<'tcx>, b_region: Region<'tcx>| match (a_region.kind(), b_region.kind()) {
+            (RePlaceholder(a_p), RePlaceholder(b_p)) => a_p.bound == b_p.bound,
+            _ => a_region == b_region,
+        };
+    let check = |constraint: &Constraint<'tcx>, cause: &SubregionOrigin<'tcx>, exact| {
         match *constraint {
-                Constraint::RegSubReg(sub, sup) if sup == placeholder_region && sup != sub => {
+            Constraint::RegSubReg(sub, sup)
+                if ((exact && sup == placeholder_region)
+                    || (!exact && matches(sup, placeholder_region)))
+                    && sup != sub =>
+            {
                 Some((sub, cause.clone()))
             }
             // FIXME: Should this check the universe of the var?
-                Constraint::VarSubReg(vid, sup) if sup == placeholder_region => {
+            Constraint::VarSubReg(vid, sup)
+                if ((exact && sup == placeholder_region)
+                    || (!exact && matches(sup, placeholder_region))) =>
+            {
                 Some((ty::Region::new_var(infcx.tcx, vid), cause.clone()))
             }
             _ => None,
         }
-        })?;
+    };
+    let mut info = region_constraints
+        .constraints
+        .iter()
+        .find_map(|(constraint, cause)| check(constraint, cause, true));
+    if info.is_none() {
+        info = region_constraints
+            .constraints
+            .iter()
+            .find_map(|(constraint, cause)| check(constraint, cause, false));
+    }
+    let (sub_region, cause) = info?;
 
     debug!(?sub_region, "cause = {:#?}", cause);
     let error = match (error_region, *sub_region) {

compiler/rustc_borrowck/src/diagnostics/move_errors.rs

@@ -607,7 +607,8 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
 
         if let Some(adt) = local_ty.ty_adt_def()
             && adt.repr().packed()
-            && let ExpnKind::Macro(MacroKind::Derive, name) = self.body.span.ctxt().outer_expn_data().kind
+            && let ExpnKind::Macro(MacroKind::Derive, name) =
+                self.body.span.ctxt().outer_expn_data().kind
         {
             err.note(format!("`#[derive({name})]` triggers a move because taking references to the fields of a packed struct is undefined behaviour"));
         }

compiler/rustc_borrowck/src/diagnostics/region_errors.rs

@@ -95,6 +95,12 @@ impl<'tcx> RegionErrors<'tcx> {
     }
 }
 
+impl std::fmt::Debug for RegionErrors<'_> {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.debug_tuple("RegionErrors").field(&self.0).finish()
+    }
+}
+
 #[derive(Clone, Debug)]
 pub(crate) enum RegionErrorKind<'tcx> {
     /// A generic bound failure for a type test (`T: 'a`).

compiler/rustc_borrowck/src/lib.rs

@@ -1,8 +1,8 @@
 //! This query borrow-checks the MIR to (further) ensure it is not broken.
 
 #![allow(internal_features)]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
+#![feature(rustdoc_internals)]
+#![doc(rust_logo)]
 #![feature(associated_type_bounds)]
 #![feature(box_patterns)]
 #![feature(let_chains)]

compiler/rustc_borrowck/src/region_infer/mod.rs

@@ -151,6 +151,7 @@ pub(crate) struct AppliedMemberConstraint {
     pub(crate) member_constraint_index: NllMemberConstraintIndex,
 }
 
+#[derive(Debug)]
 pub(crate) struct RegionDefinition<'tcx> {
     /// What kind of variable is this -- a free region? existential
     /// variable? etc. (See the `NllRegionVariableOrigin` for more
@@ -687,6 +688,9 @@ impl<'tcx> RegionInferenceContext<'tcx> {
             &mut errors_buffer,
         );
 
+        debug!(?errors_buffer);
+        debug!(?outlives_requirements);
+
         // In Polonius mode, the errors about missing universal region relations are in the output
         // and need to be emitted or propagated. Otherwise, we need to check whether the
         // constraints were too strong, and if so, emit or propagate those errors.
@@ -700,10 +704,14 @@ impl<'tcx> RegionInferenceContext<'tcx> {
             self.check_universal_regions(outlives_requirements.as_mut(), &mut errors_buffer);
         }
 
+        debug!(?errors_buffer);
+
         if errors_buffer.is_empty() {
             self.check_member_constraints(infcx, &mut errors_buffer);
         }
 
+        debug!(?errors_buffer);
+
         let outlives_requirements = outlives_requirements.unwrap_or_default();
 
         if outlives_requirements.is_empty() {
@@ -1457,6 +1465,7 @@ impl<'tcx> RegionInferenceContext<'tcx> {
         errors_buffer: &mut RegionErrors<'tcx>,
     ) {
         for (fr, fr_definition) in self.definitions.iter_enumerated() {
+            debug!(?fr, ?fr_definition);
             match fr_definition.origin {
                 NllRegionVariableOrigin::FreeRegion => {
                     // Go through each of the universal regions `fr` and check that

compiler/rustc_borrowck/src/type_check/mod.rs

@@ -1202,7 +1202,7 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
         self.infcx.tcx
     }
 
-    #[instrument(skip(self, body, location), level = "debug")]
+    #[instrument(skip(self, body), level = "debug")]
     fn check_stmt(&mut self, body: &Body<'tcx>, stmt: &Statement<'tcx>, location: Location) {
         let tcx = self.tcx();
         debug!("stmt kind: {:?}", stmt.kind);

compiler/rustc_builtin_macros/src/format.rs

@@ -617,10 +617,17 @@ fn report_missing_placeholders(
     let placeholders = pieces
         .iter()
         .filter_map(|piece| {
-            if let parse::Piece::NextArgument(argument) = piece && let ArgumentNamed(binding) = argument.position {
-                let span = fmt_span.from_inner(InnerSpan::new(argument.position_span.start, argument.position_span.end));
+            if let parse::Piece::NextArgument(argument) = piece
+                && let ArgumentNamed(binding) = argument.position
+            {
+                let span = fmt_span.from_inner(InnerSpan::new(
+                    argument.position_span.start,
+                    argument.position_span.end,
+                ));
                 Some((span, binding))
-            } else { None }
+            } else {
+                None
+            }
         })
         .collect::<Vec<_>>();
 

compiler/rustc_builtin_macros/src/lib.rs

@@ -1,9 +1,9 @@
 //! This crate contains implementations of built-in macros and other code generating facilities
 //! injecting code into the crate before it is lowered to HIR.
 
-#![cfg_attr(not(bootstrap), allow(internal_features))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
+#![allow(internal_features)]
+#![feature(rustdoc_internals)]
+#![doc(rust_logo)]
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
 #![feature(array_windows)]
 #![feature(box_patterns)]

compiler/rustc_codegen_cranelift/build_system/tests.rs

@@ -457,6 +457,8 @@ impl<'a> TestRunner<'a> {
         cmd.arg("--target");
         cmd.arg(&self.target_compiler.triple);
         cmd.arg("-Cpanic=abort");
+        cmd.arg("--check-cfg=cfg(no_unstable_features)");
+        cmd.arg("--check-cfg=cfg(jit)");
         cmd.args(args);
         cmd
     }

compiler/rustc_codegen_gcc/src/lib.rs

@@ -12,9 +12,9 @@
  * TODO(antoyo): remove the patches.
  */
 
-#![cfg_attr(not(bootstrap), allow(internal_features))]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
+#![allow(internal_features)]
+#![doc(rust_logo)]
+#![feature(rustdoc_internals)]
 #![feature(
     rustc_private,
     decl_macro,

compiler/rustc_codegen_llvm/src/common.rs

@@ -203,6 +203,7 @@ impl<'ll, 'tcx> ConstMethods<'tcx> for CodegenCx<'ll, 'tcx> {
                 unsafe {
                     llvm::LLVMSetInitializer(g, sc);
                     llvm::LLVMSetGlobalConstant(g, True);
+                    llvm::LLVMSetUnnamedAddress(g, llvm::UnnamedAddr::Global);
                     llvm::LLVMRustSetLinkage(g, llvm::Linkage::InternalLinkage);
                 }
                 (s.to_owned(), g)

compiler/rustc_codegen_llvm/src/lib.rs

@@ -4,9 +4,9 @@
 //!
 //! This API is completely unstable and subject to change.
 
-#![cfg_attr(not(bootstrap), allow(internal_features))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
+#![allow(internal_features)]
+#![feature(rustdoc_internals)]
+#![doc(rust_logo)]
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
 #![feature(exact_size_is_empty)]
 #![feature(extern_types)]

compiler/rustc_codegen_ssa/src/lib.rs

@@ -1,7 +1,7 @@
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
-#![cfg_attr(not(bootstrap), allow(internal_features))]
+#![doc(rust_logo)]
+#![feature(rustdoc_internals)]
+#![allow(internal_features)]
 #![feature(associated_type_bounds)]
 #![feature(box_patterns)]
 #![feature(if_let_guard)]

compiler/rustc_const_eval/src/interpret/operator.rs

@@ -114,9 +114,8 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
         use rustc_middle::mir::BinOp::*;
 
         // Performs appropriate non-deterministic adjustments of NaN results.
-        let adjust_nan = |f: F| -> F {
-            if f.is_nan() { M::generate_nan(self, &[l, r]) } else { f }
-        };
+        let adjust_nan =
+            |f: F| -> F { if f.is_nan() { M::generate_nan(self, &[l, r]) } else { f } };
 
         let val = match bin_op {
             Eq => ImmTy::from_bool(l == r, *self.tcx),

compiler/rustc_const_eval/src/lib.rs

@@ -4,9 +4,9 @@ Rust MIR: a lowered representation of Rust.
 
 */
 
-#![cfg_attr(not(bootstrap), allow(internal_features))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
+#![allow(internal_features)]
+#![feature(rustdoc_internals)]
+#![doc(rust_logo)]
 #![deny(rustc::untranslatable_diagnostic)]
 #![feature(assert_matches)]
 #![feature(box_patterns)]

compiler/rustc_data_structures/src/lib.rs

@@ -10,12 +10,11 @@
 #![allow(internal_features)]
 #![allow(rustc::default_hash_types)]
 #![allow(rustc::potential_query_instability)]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
 #![deny(rustc::diagnostic_outside_of_impl)]
 #![deny(rustc::untranslatable_diagnostic)]
 #![deny(unsafe_op_in_unsafe_fn)]
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
+#![doc(rust_logo)]
 #![feature(allocator_api)]
 #![feature(array_windows)]
 #![feature(auto_traits)]
@@ -34,6 +33,7 @@
 #![feature(never_type)]
 #![feature(ptr_alignment_type)]
 #![feature(rustc_attrs)]
+#![feature(rustdoc_internals)]
 #![feature(strict_provenance)]
 #![feature(test)]
 #![feature(thread_id_value)]

compiler/rustc_driver/src/lib.rs

@@ -1,8 +1,8 @@
 // This crate is intentionally empty and a re-export of `rustc_driver_impl` to allow the code in
 // `rustc_driver_impl` to be compiled in parallel with other crates.
 
-#![cfg_attr(not(bootstrap), allow(internal_features))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
+#![allow(internal_features)]
+#![feature(rustdoc_internals)]
+#![doc(rust_logo)]
 
 pub use rustc_driver_impl::*;

compiler/rustc_driver_impl/src/lib.rs

@@ -5,9 +5,9 @@
 //! This API is completely unstable and subject to change.
 
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
-#![cfg_attr(not(bootstrap), allow(internal_features))]
+#![doc(rust_logo)]
+#![feature(rustdoc_internals)]
+#![allow(internal_features)]
 #![feature(decl_macro)]
 #![feature(lazy_cell)]
 #![feature(let_chains)]

compiler/rustc_error_codes/src/lib.rs

@@ -1,6 +1,6 @@
-#![cfg_attr(not(bootstrap), allow(internal_features))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
+#![allow(internal_features)]
+#![feature(rustdoc_internals)]
+#![doc(rust_logo)]
 #![deny(rustdoc::invalid_codeblock_attributes)]
 #![deny(rustc::untranslatable_diagnostic)]
 #![deny(rustc::diagnostic_outside_of_impl)]

compiler/rustc_error_messages/src/lib.rs

@@ -1,5 +1,5 @@
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
+#![doc(rust_logo)]
+#![feature(rustdoc_internals)]
 #![feature(let_chains)]
 #![feature(lazy_cell)]
 #![feature(rustc_attrs)]

compiler/rustc_errors/src/lib.rs

@@ -3,8 +3,8 @@
 //! This module contains the code for creating and emitting diagnostics.
 
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
+#![doc(rust_logo)]
+#![feature(rustdoc_internals)]
 #![feature(array_windows)]
 #![feature(extract_if)]
 #![feature(if_let_guard)]

compiler/rustc_expand/src/config.rs

@@ -74,7 +74,9 @@ pub fn features(sess: &Session, krate_attrs: &[Attribute], crate_name: Symbol) -
     // - 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 {
+        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);
@@ -251,8 +253,7 @@ impl<'a> StripUnconfigured<'a> {
         let trees: Vec<_> = stream
             .0
             .iter()
-            .flat_map(|tree| {
-                match tree.clone() {
+            .flat_map(|tree| match tree.clone() {
                 AttrTokenTree::Attributes(mut data) => {
                     data.attrs.flat_map_in_place(|attr| self.process_cfg_attr(&attr));
 
@@ -277,7 +278,6 @@ impl<'a> StripUnconfigured<'a> {
                 AttrTokenTree::Token(token, spacing) => {
                     Some(AttrTokenTree::Token(token, spacing)).into_iter()
                 }
-            }
             })
             .collect();
         AttrTokenStream::new(trees)

compiler/rustc_expand/src/lib.rs

@@ -1,5 +1,5 @@
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
+#![doc(rust_logo)]
+#![feature(rustdoc_internals)]
 #![feature(array_windows)]
 #![feature(associated_type_bounds)]
 #![feature(associated_type_defaults)]

compiler/rustc_feature/src/accepted.rs

@@ -65,7 +65,7 @@ declare_features! (
     /// Allows free and inherent `async fn`s, `async` blocks, and `<expr>.await` expressions.
     (accepted, async_await, "1.39.0", Some(50547), None),
     /// Allows async functions to be declared, implemented, and used in traits.
-    (accepted, async_fn_in_trait, "CURRENT_RUSTC_VERSION", Some(91611), None),
+    (accepted, async_fn_in_trait, "1.75.0", Some(91611), None),
     /// Allows all literals in attribute lists and values of key-value pairs.
     (accepted, attr_literals, "1.30.0", Some(34981), None),
     /// Allows overloading augmented assignment operations like `a += b`.
@@ -306,7 +306,7 @@ declare_features! (
     /// Allows `#[repr(transparent)]` attribute on newtype structs.
     (accepted, repr_transparent, "1.28.0", Some(43036), None),
     /// Allows return-position `impl Trait` in traits.
-    (accepted, return_position_impl_trait_in_trait, "CURRENT_RUSTC_VERSION", Some(91611), None),
+    (accepted, return_position_impl_trait_in_trait, "1.75.0", Some(91611), None),
     /// Allows code like `let x: &'static u32 = &42` to work (RFC 1414).
     (accepted, rvalue_static_promotion, "1.21.0", Some(38865), None),
     /// Allows `Self` in type definitions (RFC 2300).

compiler/rustc_feature/src/lib.rs

@@ -11,9 +11,9 @@
 //! even if it is stabilized or removed, *do not remove it*. Instead, move the
 //! symbol to the `accepted` or `removed` modules respectively.
 
-#![cfg_attr(not(bootstrap), allow(internal_features))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
+#![allow(internal_features)]
+#![feature(rustdoc_internals)]
+#![doc(rust_logo)]
 #![feature(lazy_cell)]
 #![deny(rustc::untranslatable_diagnostic)]
 #![deny(rustc::diagnostic_outside_of_impl)]

compiler/rustc_feature/src/removed.rs

@@ -153,7 +153,7 @@ declare_features! (
     (removed, panic_implementation, "1.28.0", Some(44489), None,
      Some("subsumed by `#[panic_handler]`")),
     /// Allows using `#![plugin(myplugin)]`.
-    (removed, plugin, "CURRENT_RUSTC_VERSION", Some(29597), None,
+    (removed, plugin, "1.75.0", Some(29597), None,
      Some("plugins are no longer supported")),
     /// Allows using `#[plugin_registrar]` on functions.
     (removed, plugin_registrar, "1.54.0", Some(29597), None,

compiler/rustc_feature/src/unstable.rs

@@ -457,7 +457,7 @@ declare_features! (
     /// Allows using `#[repr(align(...))]` on function items
     (unstable, fn_align, "1.53.0", Some(82232), None),
     /// Allows defining gen blocks and `gen fn`.
-    (unstable, gen_blocks, "CURRENT_RUSTC_VERSION", Some(117078), None),
+    (unstable, gen_blocks, "1.75.0", Some(117078), None),
     /// Infer generic args for both consts and types.
     (unstable, generic_arg_infer, "1.55.0", Some(85077), None),
     /// An extension to the `generic_associated_types` feature, allowing incomplete features.
@@ -527,7 +527,7 @@ declare_features! (
     /// 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),
     /// Allows using enums in offset_of!
-    (unstable, offset_of_enum, "CURRENT_RUSTC_VERSION", Some(106655), None),
+    (unstable, offset_of_enum, "1.75.0", Some(106655), None),
     /// Allows using `#[optimize(X)]`.
     (unstable, optimize_attribute, "1.34.0", Some(54882), None),
     /// Allows exhaustive integer pattern matching on `usize` and `isize`.

compiler/rustc_fluent_macro/src/lib.rs

@@ -1,7 +1,7 @@
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), allow(internal_features))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
+#![doc(rust_logo)]
+#![allow(internal_features)]
+#![feature(rustdoc_internals)]
 #![feature(proc_macro_diagnostic)]
 #![feature(proc_macro_span)]
 #![deny(rustc::untranslatable_diagnostic)]

compiler/rustc_graphviz/src/lib.rs

@@ -273,9 +273,9 @@
     html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/",
     test(attr(allow(unused_variables), deny(warnings)))
 )]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), allow(internal_features))]
+#![feature(rustdoc_internals)]
+#![doc(rust_logo)]
+#![allow(internal_features)]
 #![deny(rustc::untranslatable_diagnostic)]
 #![deny(rustc::diagnostic_outside_of_impl)]
 

compiler/rustc_hir_analysis/src/astconv/bounds.rs

@@ -194,8 +194,7 @@ impl<'tcx> dyn AstConv<'tcx> + '_ {
 
         self.add_bounds(
             param_ty,
-            ast_bounds.iter().filter(|bound| {
-                match filter {
+            ast_bounds.iter().filter(|bound| match filter {
                 PredicateFilter::All
                 | PredicateFilter::SelfOnly
                 | PredicateFilter::SelfAndAssociatedTypeBounds => true,
@@ -209,7 +208,6 @@ impl<'tcx> dyn AstConv<'tcx> + '_ {
                         false
                     }
                 }
-            }
             }),
             &mut bounds,
             ty::List::empty(),

compiler/rustc_hir_analysis/src/astconv/errors.rs

@@ -206,15 +206,14 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
                     && let parent = hir.get_parent_item(hir.local_def_id_to_hir_id(def_id))
                     && let Some(generics) = hir.get_generics(parent.def_id)
                 {
-                    if generics.bounds_for_param(def_id)
-                        .flat_map(|pred| pred.bounds.iter())
-                        .any(|b| match b {
+                    if generics.bounds_for_param(def_id).flat_map(|pred| pred.bounds.iter()).any(
+                        |b| match b {
                             hir::GenericBound::Trait(t, ..) => {
                                 t.trait_ref.trait_def_id().as_ref() == Some(best_trait)
                             }
                             _ => false,
-                        })
-                    {
+                        },
+                    ) {
                         // The type param already has a bound for `trait_name`, we just need to
                         // change the associated type.
                         err.span_suggestion_verbose(
@@ -234,8 +233,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
                         &trait_name,
                         None,
                         None,
-                        )
-                        && suggested_name != assoc_name.name
+                    ) && suggested_name != assoc_name.name
                     {
                         // We suggested constraining a type parameter, but the associated type on it
                         // was also not an exact match, so we also suggest changing it.

compiler/rustc_hir_analysis/src/lib.rs

@@ -57,9 +57,9 @@ This API is completely unstable and subject to change.
 
 #![allow(rustc::potential_query_instability)]
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
-#![cfg_attr(not(bootstrap), allow(internal_features))]
+#![doc(rust_logo)]
+#![feature(rustdoc_internals)]
+#![allow(internal_features)]
 #![feature(box_patterns)]
 #![feature(control_flow_enum)]
 #![feature(if_let_guard)]

compiler/rustc_hir_typeck/src/expr.rs

@@ -3185,12 +3185,15 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                             sym::offset_of_enum,
                             ident.span,
                             "using enums in offset_of is experimental",
-                        ).emit();
+                        )
+                        .emit();
                     }
 
-                    let Some((index, variant)) = container_def.variants()
+                    let Some((index, variant)) = container_def
+                        .variants()
                         .iter_enumerated()
-                        .find(|(_, v)| v.ident(self.tcx).normalize_to_macros_2_0() == ident) else {
+                        .find(|(_, v)| v.ident(self.tcx).normalize_to_macros_2_0() == ident)
+                    else {
                         let mut err = type_error_struct!(
                             self.tcx().sess,
                             ident.span,
@@ -3217,9 +3220,11 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                     let (subident, sub_def_scope) =
                         self.tcx.adjust_ident_and_get_scope(subfield, variant.def_id, block);
 
-                    let Some((subindex, field)) = variant.fields
+                    let Some((subindex, field)) = variant
+                        .fields
                         .iter_enumerated()
-                        .find(|(_, f)| f.ident(self.tcx).normalize_to_macros_2_0() == subident) else {
+                        .find(|(_, f)| f.ident(self.tcx).normalize_to_macros_2_0() == subident)
+                    else {
                         let mut err = type_error_struct!(
                             self.tcx().sess,
                             ident.span,

compiler/rustc_hir_typeck/src/fn_ctxt/checks.rs

@@ -1868,20 +1868,27 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                 let mut found_semi = false;
                 for (_, node) in self.tcx.hir().parent_iter(hir_id) {
                     match node {
-                            hir::Node::Stmt(stmt) => if let hir::StmtKind::Semi(ref expr) = stmt.kind {
+                        hir::Node::Stmt(stmt) => {
+                            if let hir::StmtKind::Semi(ref expr) = stmt.kind {
                                 let expr_ty = self.typeck_results.borrow().expr_ty(expr);
                                 let return_ty = fn_sig.output();
-                                if !matches!(expr.kind, hir::ExprKind::Ret(..)) &&
-                                    self.can_coerce(expr_ty, return_ty) {
+                                if !matches!(expr.kind, hir::ExprKind::Ret(..))
+                                    && self.can_coerce(expr_ty, return_ty)
+                                {
                                     found_semi = true;
                                 }
-                            },
-                            hir::Node::Block(_block) => if found_semi {
+                            }
+                        }
+                        hir::Node::Block(_block) => {
+                            if found_semi {
                                 block_num += 1;
                             }
-                            hir::Node::Item(item) => if let hir::ItemKind::Fn(..) = item.kind {
+                        }
+                        hir::Node::Item(item) => {
+                            if let hir::ItemKind::Fn(..) = item.kind {
                                 break;
                             }
+                        }
                         _ => {}
                     }
                 }

compiler/rustc_hir_typeck/src/method/suggest.rs

@@ -1,6 +1,8 @@
 //! Give useful errors and suggestions to users when an item can't be
 //! found or is otherwise invalid.
 
+// ignore-tidy-filelength
+
 use crate::errors;
 use crate::errors::{CandidateTraitNote, NoAssociatedItem};
 use crate::Expectation;
@@ -369,9 +371,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
             tcx.is_diagnostic_item(sym::write_macro, def_id)
                 || tcx.is_diagnostic_item(sym::writeln_macro, def_id)
         }) && item_name.name == Symbol::intern("write_fmt");
-        let mut err =
-            if is_write && let SelfSource::MethodCall(rcvr_expr) = source
-            {
+        let mut err = if is_write && let SelfSource::MethodCall(rcvr_expr) = source {
             self.suggest_missing_writer(rcvr_ty, rcvr_expr)
         } else {
             tcx.sess.create_err(NoAssociatedItem {
@@ -1240,20 +1240,27 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
             }
         }
         // If an appropriate error source is not found, check method chain for possible candiates
-        if unsatisfied_predicates.is_empty() && let Mode::MethodCall = mode && let SelfSource::MethodCall(mut source_expr) = source {
+        if unsatisfied_predicates.is_empty()
+            && let Mode::MethodCall = mode
+            && let SelfSource::MethodCall(mut source_expr) = source
+        {
             let mut stack_methods = vec![];
             while let hir::ExprKind::MethodCall(_path_segment, rcvr_expr, _args, method_span) =
                 source_expr.kind
             {
                 // Pop the matching receiver, to align on it's notional span
                 if let Some(prev_match) = stack_methods.pop() {
-                    err.span_label(method_span, format!("{item_kind} `{item_name}` is available on `{prev_match}`"));
+                    err.span_label(
+                        method_span,
+                        format!("{item_kind} `{item_name}` is available on `{prev_match}`"),
+                    );
                 }
                 let rcvr_ty = self.resolve_vars_if_possible(
                     self.typeck_results
                         .borrow()
                         .expr_ty_adjusted_opt(rcvr_expr)
-                        .unwrap_or(Ty::new_misc_error(self.tcx)),);
+                        .unwrap_or(Ty::new_misc_error(self.tcx)),
+                );
 
                 for _matched_method in self.probe_for_name_many(
                     Mode::MethodCall,
@@ -1262,7 +1269,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                     IsSuggestion(true),
                     rcvr_ty,
                     source_expr.hir_id,
-                    ProbeScope::TraitsInScope,) {
+                    ProbeScope::TraitsInScope,
+                ) {
                     // found a match, push to stack
                     stack_methods.push(rcvr_ty);
                 }
@@ -1270,7 +1278,10 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
             }
             // If there is a match at the start of the chain, add a label for it too!
             if let Some(prev_match) = stack_methods.pop() {
-                err.span_label(source_expr.span, format!("{item_kind} `{item_name}` is available on `{prev_match}`"));
+                err.span_label(
+                    source_expr.span,
+                    format!("{item_kind} `{item_name}` is available on `{prev_match}`"),
+                );
             }
         }
         self.note_derefed_ty_has_method(&mut err, source, rcvr_ty, item_name, expected);
@@ -1357,10 +1368,12 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                             err,
                             self_source,
                             args,
-                            trait_ref.instantiate(
+                            trait_ref
+                                .instantiate(
                                     self.tcx,
-                                self.fresh_args_for_item(sugg_span, impl_did)
-                            ).with_self_ty(self.tcx, rcvr_ty),
+                                    self.fresh_args_for_item(sugg_span, impl_did),
+                                )
+                                .with_self_ty(self.tcx, rcvr_ty),
                             idx,
                             sugg_span,
                             item,
@@ -1397,8 +1410,9 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                             ty::TraitRef::new(
                                 self.tcx,
                                 trait_did,
-                                self.fresh_args_for_item(sugg_span, trait_did)
-                            ).with_self_ty(self.tcx, rcvr_ty),
+                                self.fresh_args_for_item(sugg_span, trait_did),
+                            )
+                            .with_self_ty(self.tcx, rcvr_ty),
                             idx,
                             sugg_span,
                             item,
@@ -1409,7 +1423,9 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                 }
             }
         }
-        if !suggs.is_empty() && let Some(span) = sugg_span {
+        if !suggs.is_empty()
+            && let Some(span) = sugg_span
+        {
             err.span_suggestions(
                 span.with_hi(item_name.span.lo()),
                 "use fully-qualified syntax to disambiguate",
@@ -3296,7 +3312,8 @@ fn print_disambiguation_help<'tcx>(
         {
             let def_kind_descr = tcx.def_kind_descr(item.kind.as_def_kind(), item.def_id);
             let item_name = item.ident(tcx);
-            let rcvr_ref = tcx.fn_sig(item.def_id)
+            let rcvr_ref = tcx
+                .fn_sig(item.def_id)
                 .skip_binder()
                 .skip_binder()
                 .inputs()

compiler/rustc_incremental/src/lib.rs

@@ -2,9 +2,9 @@
 
 #![deny(missing_docs)]
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
-#![cfg_attr(not(bootstrap), allow(internal_features))]
+#![doc(rust_logo)]
+#![feature(rustdoc_internals)]
+#![allow(internal_features)]
 #![recursion_limit = "256"]
 #![deny(rustc::untranslatable_diagnostic)]
 #![deny(rustc::diagnostic_outside_of_impl)]

compiler/rustc_infer/src/infer/error_reporting/note_and_explain.rs

@@ -87,7 +87,8 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> {
                     | (ty::Alias(ty::Projection, proj), ty::Param(p))
                         if !tcx.is_impl_trait_in_trait(proj.def_id) =>
                     {
-                        let parent = tcx.generics_of(body_owner_def_id)
+                        let parent = tcx
+                            .generics_of(body_owner_def_id)
                             .opt_type_param(p, tcx)
                             .and_then(|param| {
                                 let p_def_id = param.def_id;

compiler/rustc_infer/src/infer/outlives/for_liveness.rs

@@ -112,7 +112,9 @@ where
                     };
 
                     for (idx, s) in args.iter().enumerate() {
-                        if variances.map(|variances| variances[idx]) != Some(ty::Variance::Bivariant) {
+                        if variances.map(|variances| variances[idx])
+                            != Some(ty::Variance::Bivariant)
+                        {
                             s.visit_with(self)?;
                         }
                     }

compiler/rustc_infer/src/lib.rs

@@ -13,9 +13,9 @@
 //! This API is completely unstable and subject to change.
 
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
-#![cfg_attr(not(bootstrap), allow(internal_features))]
+#![doc(rust_logo)]
+#![feature(rustdoc_internals)]
+#![allow(internal_features)]
 #![feature(associated_type_bounds)]
 #![feature(box_patterns)]
 #![feature(control_flow_enum)]

compiler/rustc_interface/src/interface.rs

@@ -178,7 +178,9 @@ pub(crate) fn parse_check_cfg(handler: &EarlyErrorHandler, specs: Vec<String>) -
 
             check_cfg.exhaustive_names = true;
             for arg in args {
-                if arg.is_word() && let Some(ident) = arg.ident() {
+                if arg.is_word()
+                    && let Some(ident) = arg.ident()
+                {
                     check_cfg.expecteds.entry(ident.name).or_insert(ExpectedValues::Any);
                 } else {
                     error!("`names()` arguments must be simple identifiers");
@@ -188,7 +190,9 @@ pub(crate) fn parse_check_cfg(handler: &EarlyErrorHandler, specs: Vec<String>) -
             set_old_syntax();
 
             if let Some((name, values)) = args.split_first() {
-                if name.is_word() && let Some(ident) = name.ident() {
+                if name.is_word()
+                    && let Some(ident) = name.ident()
+                {
                     let expected_values = check_cfg
                         .expecteds
                         .entry(ident.name)
@@ -236,12 +240,16 @@ pub(crate) fn parse_check_cfg(handler: &EarlyErrorHandler, specs: Vec<String>) -
             let mut values_any_specified = false;
 
             for arg in args {
-                if arg.is_word() && let Some(ident) = arg.ident() {
+                if arg.is_word()
+                    && let Some(ident) = arg.ident()
+                {
                     if values_specified {
                         error!("`cfg()` names cannot be after values");
                     }
                     names.push(ident);
-                } else if arg.has_name(sym::any) && let Some(args) = arg.meta_item_list() {
+                } else if arg.has_name(sym::any)
+                    && let Some(args) = arg.meta_item_list()
+                {
                     if any_specified {
                         error!("`any()` cannot be specified multiple times");
                     }
@@ -249,7 +257,9 @@ pub(crate) fn parse_check_cfg(handler: &EarlyErrorHandler, specs: Vec<String>) -
                     if !args.is_empty() {
                         error!("`any()` must be empty");
                     }
-                } else if arg.has_name(sym::values) && let Some(args) = arg.meta_item_list() {
+                } else if arg.has_name(sym::values)
+                    && let Some(args) = arg.meta_item_list()
+                {
                     if names.is_empty() {
                         error!("`values()` cannot be specified before the names");
                     } else if values_specified {
@@ -260,7 +270,9 @@ pub(crate) fn parse_check_cfg(handler: &EarlyErrorHandler, specs: Vec<String>) -
                     for arg in args {
                         if let Some(LitKind::Str(s, _)) = arg.lit().map(|lit| &lit.kind) {
                             values.insert(Some(*s));
-                        } else if arg.has_name(sym::any) && let Some(args) = arg.meta_item_list() {
+                        } else if arg.has_name(sym::any)
+                            && let Some(args) = arg.meta_item_list()
+                        {
                             if values_any_specified {
                                 error!("`any()` in `values()` cannot be specified multiple times");
                             }

compiler/rustc_interface/src/util.rs

@@ -415,7 +415,9 @@ pub fn collect_crate_types(session: &Session, attrs: &[ast::Attribute]) -> Vec<C
     let mut base = session.opts.crate_types.clone();
     if base.is_empty() {
         let attr_types = attrs.iter().filter_map(|a| {
-            if a.has_name(sym::crate_type) && let Some(s) = a.value_str() {
+            if a.has_name(sym::crate_type)
+                && let Some(s) = a.value_str()
+            {
                 categorize_crate_type(s)
             } else {
                 None

compiler/rustc_lint/src/lib.rs

@@ -27,8 +27,8 @@
 
 #![allow(rustc::potential_query_instability)]
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
+#![doc(rust_logo)]
+#![feature(rustdoc_internals)]
 #![feature(array_windows)]
 #![feature(box_patterns)]
 #![feature(control_flow_enum)]

compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp

@@ -983,6 +983,9 @@ extern "C" LLVMMetadataRef LLVMRustDIBuilderCreateStaticMemberType(
     unwrapDI<DIType>(Ty),
     fromRust(Flags),
     unwrap<llvm::ConstantInt>(val),
+#if LLVM_VERSION_GE(18, 0)
+    llvm::dwarf::DW_TAG_member,
+#endif
     AlignInBits
   ));
 }
@@ -1105,7 +1108,11 @@ extern "C" LLVMMetadataRef LLVMRustDIBuilderCreateEnumerationType(
       unwrapDI<DIDescriptor>(Scope), StringRef(Name, NameLen),
       unwrapDI<DIFile>(File), LineNumber,
       SizeInBits, AlignInBits, DINodeArray(unwrapDI<MDTuple>(Elements)),
-      unwrapDI<DIType>(ClassTy), "", IsScoped));
+      unwrapDI<DIType>(ClassTy),
+#if LLVM_VERSION_GE(18, 0)
+      /* RunTimeLang */ 0,
+#endif
+      "", IsScoped));
 }
 
 extern "C" LLVMMetadataRef LLVMRustDIBuilderCreateUnionType(

compiler/rustc_llvm/src/lib.rs

@@ -1,9 +1,9 @@
 #![deny(rustc::untranslatable_diagnostic)]
 #![deny(rustc::diagnostic_outside_of_impl)]
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
-#![cfg_attr(not(bootstrap), allow(internal_features))]
+#![doc(rust_logo)]
+#![feature(rustdoc_internals)]
+#![allow(internal_features)]
 
 // NOTE: This crate only exists to allow linking on mingw targets.
 

compiler/rustc_macros/src/symbols.rs

@@ -85,7 +85,9 @@ impl Parse for Value {
                 }
             }
             Expr::Macro(expr) => {
-                if expr.mac.path.is_ident("env") && let Ok(lit) = expr.mac.parse_body() {
+                if expr.mac.path.is_ident("env")
+                    && let Ok(lit) = expr.mac.parse_body()
+                {
                     return Ok(Value::Env(lit, expr.mac.clone()));
                 }
             }

compiler/rustc_metadata/src/lib.rs

@@ -1,11 +1,10 @@
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
-#![cfg_attr(not(bootstrap), allow(internal_features))]
+#![doc(rust_logo)]
+#![feature(rustdoc_internals)]
+#![allow(internal_features)]
 #![feature(decl_macro)]
 #![feature(extract_if)]
-#![cfg_attr(bootstrap, feature(generators))]
-#![cfg_attr(not(bootstrap), feature(coroutines))]
+#![feature(coroutines)]
 #![feature(iter_from_coroutine)]
 #![feature(let_chains)]
 #![feature(if_let_guard)]

compiler/rustc_metadata/src/rmeta/encoder.rs

@@ -2396,8 +2396,10 @@ pub fn rendered_const<'tcx>(tcx: TyCtxt<'tcx>, body: hir::BodyId) -> String {
         // * character escapes
         //
         // FIXME: This passes through `-/*spacer*/0` verbatim.
-        Literal if !value.span.from_expansion()
-            && let Ok(snippet) = tcx.sess.source_map().span_to_snippet(value.span) => {
+        Literal
+            if !value.span.from_expansion()
+                && let Ok(snippet) = tcx.sess.source_map().span_to_snippet(value.span) =>
+        {
             snippet
         }
 
@@ -2408,10 +2410,12 @@ pub fn rendered_const<'tcx>(tcx: TyCtxt<'tcx>, body: hir::BodyId) -> String {
         // FIXME: Omit the curly braces if the enclosing expression is an array literal
         //        with a repeated element (an `ExprKind::Repeat`) as in such case it
         //        would not actually need any disambiguation.
-        Complex => if tcx.def_kind(hir.body_owner_def_id(body).to_def_id()) == DefKind::AnonConst {
+        Complex => {
+            if tcx.def_kind(hir.body_owner_def_id(body).to_def_id()) == DefKind::AnonConst {
                 "{ _ }".to_owned()
             } else {
                 "_".to_owned()
             }
         }
     }
+}

compiler/rustc_middle/src/lib.rs

@@ -23,8 +23,8 @@
 //! This API is completely unstable and subject to change.
 
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
+#![doc(rust_logo)]
+#![feature(rustdoc_internals)]
 #![feature(allocator_api)]
 #![feature(array_windows)]
 #![feature(assert_matches)]
@@ -32,8 +32,7 @@
 #![feature(core_intrinsics)]
 #![feature(discriminant_kind)]
 #![feature(exhaustive_patterns)]
-#![cfg_attr(bootstrap, feature(generators))]
-#![cfg_attr(not(bootstrap), feature(coroutines))]
+#![feature(coroutines)]
 #![feature(get_mut_unchecked)]
 #![feature(if_let_guard)]
 #![feature(inline_const)]

compiler/rustc_middle/src/mir/spanview.rs

@@ -507,11 +507,7 @@ fn write_span<W>(
 where
     W: Write,
 {
-    let maybe_alt_class = if layer > 0 {
-        if alt { " odd" } else { " even" }
-    } else {
-        ""
-    };
+    let maybe_alt_class = if layer > 0 { if alt { " odd" } else { " even" } } else { "" };
     let maybe_title_attr = if !tooltip.is_empty() {
         format!(" title=\"{}\"", escape_attr(tooltip))
     } else {

compiler/rustc_middle/src/mir/terminator.rs

@@ -28,7 +28,9 @@ impl SwitchTargets {
 
     /// Inverse of `SwitchTargets::static_if`.
     pub fn as_static_if(&self) -> Option<(u128, BasicBlock, BasicBlock)> {
-        if let &[value] = &self.values[..] && let &[then, else_] = &self.targets[..] {
+        if let &[value] = &self.values[..]
+            && let &[then, else_] = &self.targets[..]
+        {
             Some((value, then, else_))
         } else {
             None

compiler/rustc_middle/src/thir.rs

@@ -655,7 +655,9 @@ impl<'tcx> Pat<'tcx> {
     pub fn pat_error_reported(&self) -> Result<(), ErrorGuaranteed> {
         let mut error = None;
         self.walk(|pat| {
-            if let PatKind::Error(e) = pat.kind && error.is_none() {
+            if let PatKind::Error(e) = pat.kind
+                && error.is_none()
+            {
                 error = Some(e);
             }
             error.is_none()

compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs

@@ -200,7 +200,9 @@ impl<'tcx> ConstToPat<'tcx> {
                     // We errored. Signal that in the pattern, so that follow up errors can be silenced.
                     let kind = PatKind::Error(e);
                     return Box::new(Pat { span: self.span, ty: cv.ty(), kind });
-                } else if let ty::Adt(..) = cv.ty().kind() && matches!(cv, mir::Const::Val(..)) {
+                } else if let ty::Adt(..) = cv.ty().kind()
+                    && matches!(cv, mir::Const::Val(..))
+                {
                     // This branch is only entered when the current `cv` is `mir::Const::Val`.
                     // This is because `mir::Const::ty` has already been handled by `Self::recur`
                     // and the invalid types may be ignored.

compiler/rustc_mir_transform/src/cost_checker.rs

@@ -69,7 +69,9 @@ impl<'tcx> Visitor<'tcx> for CostChecker<'_, 'tcx> {
             }
             TerminatorKind::Call { func: Operand::Constant(ref f), unwind, .. } => {
                 let fn_ty = self.instantiate_ty(f.const_.ty());
-                self.cost += if let ty::FnDef(def_id, _) = *fn_ty.kind() && tcx.is_intrinsic(def_id) {
+                self.cost += if let ty::FnDef(def_id, _) = *fn_ty.kind()
+                    && tcx.is_intrinsic(def_id)
+                {
                     // Don't give intrinsics the extra penalty for calls
                     INSTR_COST
                 } else {

compiler/rustc_mir_transform/src/coverage/counters.rs

@@ -138,7 +138,9 @@ impl CoverageCounters {
         // If the BCB has an edge counter (to be injected into a new `BasicBlock`), it can also
         // have an expression (to be injected into an existing `BasicBlock` represented by this
         // `BasicCoverageBlock`).
-        if let Some(node_counter) = self.bcb_counter(to_bcb) && !node_counter.is_expression() {
+        if let Some(node_counter) = self.bcb_counter(to_bcb)
+            && !node_counter.is_expression()
+        {
             bug!(
                 "attempt to add an incoming edge counter from {from_bcb:?} \
                 when the target BCB already has {node_counter:?}"

compiler/rustc_mir_transform/src/coverage/spans.rs

@@ -475,7 +475,9 @@ impl<'a> CoverageSpansGenerator<'a> {
         }
         while let Some(curr) = self.sorted_spans_iter.next() {
             debug!("FOR curr={:?}", curr);
-            if let Some(prev) = &self.some_prev && prev.span.lo() > curr.span.lo() {
+            if let Some(prev) = &self.some_prev
+                && prev.span.lo() > curr.span.lo()
+            {
                 // Skip curr because prev has already advanced beyond the end of curr.
                 // This can only happen if a prior iteration updated `prev` to skip past
                 // a region of code, such as skipping past a closure.

compiler/rustc_mir_transform/src/dataflow_const_prop.rs

@@ -597,7 +597,9 @@ fn propagatable_scalar(
     state: &State<FlatSet<Scalar>>,
     map: &Map,
 ) -> Option<Scalar> {
-    if let FlatSet::Elem(value) = state.get_idx(place, map) && value.try_to_int().is_ok() {
+    if let FlatSet::Elem(value) = state.get_idx(place, map)
+        && value.try_to_int().is_ok()
+    {
         // Do not attempt to propagate pointers, as we may fail to preserve their identity.
         Some(value)
     } else {
@@ -836,7 +838,8 @@ impl<'tcx> Visitor<'tcx> for OperandCollector<'tcx, '_, '_, '_> {
         location: Location,
     ) {
         if let PlaceElem::Index(local) = elem
-            && let Some(value) = self.visitor.try_make_constant(self.ecx, local.into(), self.state, self.map)
+            && let Some(value) =
+                self.visitor.try_make_constant(self.ecx, local.into(), self.state, self.map)
         {
             self.visitor.patch.before_effect.insert((location, local.into()), value);
         }

compiler/rustc_mir_transform/src/gvn.rs

@@ -461,7 +461,9 @@ impl<'body, 'tcx> VnState<'body, 'tcx> {
             }
             NullaryOp(null_op, ty) => {
                 let layout = self.ecx.layout_of(ty).ok()?;
-                if let NullOp::SizeOf | NullOp::AlignOf = null_op && layout.is_unsized() {
+                if let NullOp::SizeOf | NullOp::AlignOf = null_op
+                    && layout.is_unsized()
+                {
                     return None;
                 }
                 let val = match null_op {
@@ -865,7 +867,9 @@ impl<'body, 'tcx> VnState<'body, 'tcx> {
             .collect();
         let fields = fields?;
 
-        if let AggregateTy::Array = ty && fields.len() > 4 {
+        if let AggregateTy::Array = ty
+            && fields.len() > 4
+        {
             let first = fields[0];
             if fields.iter().all(|&v| v == first) {
                 let len = ty::Const::from_target_usize(self.tcx, fields.len().try_into().unwrap());
@@ -1008,8 +1012,7 @@ impl<'tcx> MutVisitor<'tcx> for VnState<'_, 'tcx> {
             // Do not try to simplify a constant, it's already in canonical shape.
             && !matches!(rvalue, Rvalue::Use(Operand::Constant(_)))
         {
-            if let Some(value) = self.simplify_rvalue(rvalue, location)
-            {
+            if let Some(value) = self.simplify_rvalue(rvalue, location) {
                 if let Some(const_) = self.try_as_constant(value) {
                     *rvalue = Rvalue::Use(Operand::Constant(Box::new(const_)));
                 } else if let Some(local) = self.try_as_local(value, location)

compiler/rustc_mir_transform/src/jump_threading.rs

@@ -247,7 +247,9 @@ impl<'tcx, 'a> TOFinder<'tcx, 'a> {
         let last_non_rec = self.opportunities.len();
 
         let predecessors = &self.body.basic_blocks.predecessors()[bb];
-        if let &[pred] = &predecessors[..] && bb != START_BLOCK {
+        if let &[pred] = &predecessors[..]
+            && bb != START_BLOCK
+        {
             let term = self.body.basic_blocks[pred].terminator();
             match term.kind {
                 TerminatorKind::SwitchInt { ref discr, ref targets } => {
@@ -419,8 +421,10 @@ impl<'tcx, 'a> TOFinder<'tcx, 'a> {
                                 // Do not support unions.
                                 AggregateKind::Adt(.., Some(_)) => return None,
                                 AggregateKind::Adt(_, variant_index, ..) if agg_ty.is_enum() => {
-                                    if let Some(discr_target) = self.map.apply(lhs, TrackElem::Discriminant)
-                                        && let Some(discr_value) = discriminant_for_variant(agg_ty, *variant_index)
+                                    if let Some(discr_target) =
+                                        self.map.apply(lhs, TrackElem::Discriminant)
+                                        && let Some(discr_value) =
+                                            discriminant_for_variant(agg_ty, *variant_index)
                                     {
                                         self.process_operand(bb, discr_target, &discr_value, state);
                                     }

compiler/rustc_parse/src/parser/diagnostics.rs

@@ -506,7 +506,9 @@ impl<'a> Parser<'a> {
         if expected.contains(&TokenType::Token(token::Semi)) {
             // If the user is trying to write a ternary expression, recover it and
             // return an Err to prevent a cascade of irrelevant diagnostics
-            if self.prev_token == token::Question && let Err(e) = self.maybe_recover_from_ternary_operator() {
+            if self.prev_token == token::Question
+                && let Err(e) = self.maybe_recover_from_ternary_operator()
+            {
                 return Err(e);
             }
 

compiler/rustc_passes/src/lib.rs

@@ -6,9 +6,9 @@
 
 #![allow(rustc::potential_query_instability)]
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
-#![cfg_attr(not(bootstrap), allow(internal_features))]
+#![doc(rust_logo)]
+#![feature(rustdoc_internals)]
+#![allow(internal_features)]
 #![feature(iter_intersperse)]
 #![feature(let_chains)]
 #![feature(map_try_insert)]

compiler/rustc_passes/src/stability.rs

@@ -196,7 +196,10 @@ impl<'a, 'tcx> Annotator<'a, 'tcx> {
             }
         }
 
-        if let Some((depr, span)) = &depr && depr.is_since_rustc_version() && stab.is_none() {
+        if let Some((depr, span)) = &depr
+            && depr.is_since_rustc_version()
+            && stab.is_none()
+        {
             self.tcx.sess.emit_err(errors::DeprecatedAttribute { span: *span });
         }
 

compiler/rustc_privacy/src/lib.rs

@@ -1,7 +1,7 @@
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
-#![cfg_attr(not(bootstrap), allow(internal_features))]
+#![doc(rust_logo)]
+#![feature(rustdoc_internals)]
+#![allow(internal_features)]
 #![feature(associated_type_defaults)]
 #![feature(rustc_private)]
 #![feature(try_blocks)]

compiler/rustc_query_impl/src/lib.rs

@@ -1,8 +1,8 @@
 //! Support for serializing the dep-graph and reloading it.
 
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
+#![doc(rust_logo)]
+#![feature(rustdoc_internals)]
 // this shouldn't be necessary, but the check for `&mut _` is too naive and denies returning a function pointer that takes a mut ref
 #![feature(const_mut_refs)]
 #![feature(const_refs_to_cell)]

compiler/rustc_resolve/src/lib.rs

@@ -7,8 +7,8 @@
 //! Type-relative name resolution (methods, fields, associated items) happens in `rustc_hir_analysis`.
 
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
+#![doc(rust_logo)]
+#![feature(rustdoc_internals)]
 #![feature(assert_matches)]
 #![feature(box_patterns)]
 #![feature(extract_if)]

compiler/rustc_serialize/src/lib.rs

@@ -5,9 +5,9 @@
     html_playground_url = "https://play.rust-lang.org/",
     test(attr(allow(unused_variables), deny(warnings)))
 )]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), allow(internal_features))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
+#![doc(rust_logo)]
+#![allow(internal_features)]
+#![feature(rustdoc_internals)]
 #![feature(allocator_api)]
 #![feature(associated_type_bounds)]
 #![feature(const_option)]

compiler/rustc_smir/src/lib.rs

@@ -10,9 +10,9 @@
     html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/",
     test(attr(allow(unused_variables), deny(warnings)))
 )]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
-#![cfg_attr(not(bootstrap), allow(internal_features))]
+#![doc(rust_logo)]
+#![feature(rustdoc_internals)]
+#![allow(internal_features)]
 #![allow(rustc::usage_of_ty_tykind)]
 
 pub mod rustc_internal;

compiler/rustc_span/src/lib.rs

@@ -17,11 +17,10 @@
 
 // tidy-alphabetical-start
 #![allow(internal_features)]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
 #![deny(rustc::diagnostic_outside_of_impl)]
 #![deny(rustc::untranslatable_diagnostic)]
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
+#![doc(rust_logo)]
 #![feature(array_windows)]
 #![feature(cfg_match)]
 #![feature(core_io_borrowed_buf)]
@@ -33,6 +32,7 @@
 #![feature(read_buf)]
 #![feature(round_char_boundary)]
 #![feature(rustc_attrs)]
+#![feature(rustdoc_internals)]
 // tidy-alphabetical-end
 
 #[macro_use]

compiler/rustc_symbol_mangling/src/lib.rs

@@ -88,9 +88,9 @@
 //! DefPaths which are much more robust in the face of changes to the code base.
 
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
-#![cfg_attr(not(bootstrap), allow(internal_features))]
+#![doc(rust_logo)]
+#![feature(rustdoc_internals)]
+#![allow(internal_features)]
 #![feature(never_type)]
 #![recursion_limit = "256"]
 #![allow(rustc::potential_query_instability)]

compiler/rustc_target/src/lib.rs

@@ -8,8 +8,8 @@
 //! LLVM.
 
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
+#![doc(rust_logo)]
+#![feature(rustdoc_internals)]
 #![feature(assert_matches)]
 #![feature(associated_type_bounds)]
 #![feature(exhaustive_patterns)]

compiler/rustc_trait_selection/src/lib.rs

@@ -11,9 +11,9 @@
 //! This API is completely unstable and subject to change.
 
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
-#![cfg_attr(not(bootstrap), allow(internal_features))]
+#![doc(rust_logo)]
+#![feature(rustdoc_internals)]
+#![allow(internal_features)]
 #![feature(associated_type_bounds)]
 #![feature(box_patterns)]
 #![feature(control_flow_enum)]

compiler/rustc_trait_selection/src/traits/error_reporting/on_unimplemented.rs

@@ -187,11 +187,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
         if let Some(kind) = self.tcx.fn_trait_kind_from_def_id(trait_ref.def_id)
             && let ty::Tuple(args) = trait_ref.args.type_at(1).kind()
         {
-            let args = args
-                .iter()
-                .map(|ty| ty.to_string())
-                .collect::<Vec<_>>()
-                .join(", ");
+            let args = args.iter().map(|ty| ty.to_string()).collect::<Vec<_>>().join(", ");
             flags.push((sym::Trait, Some(format!("{}({args})", kind.as_str()))));
         } else {
             flags.push((sym::Trait, Some(trait_ref.print_only_trait_path().to_string())));
@@ -636,7 +632,9 @@ impl<'tcx> OnUnimplementedDirective {
                         let value = cfg.value.map(|v| {
                             // `with_no_visible_paths` is also used when generating the options,
                             // so we need to match it here.
-                            ty::print::with_no_visible_paths!(OnUnimplementedFormatString(v).format(tcx, trait_ref, &options_map))
+                            ty::print::with_no_visible_paths!(
+                                OnUnimplementedFormatString(v).format(tcx, trait_ref, &options_map)
+                            )
                         });
 
                         options.contains(&(cfg.name, value))

compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs

@@ -2723,11 +2723,14 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
                                 .collect::<Vec<_>>();
                             if !impls.is_empty() {
                                 let len = impls.len();
-                                let mut types = impls.iter()
-                                    .map(|t| with_no_trimmed_paths!(format!(
+                                let mut types = impls
+                                    .iter()
+                                    .map(|t| {
+                                        with_no_trimmed_paths!(format!(
                                             "  {}",
                                             tcx.type_of(*t).instantiate_identity(),
-                                    )))
+                                        ))
+                                    })
                                     .collect::<Vec<_>>();
                                 let post = if types.len() > 9 {
                                     types.truncate(8);
@@ -2769,30 +2772,47 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
                     ));
                 }
             }
-            ObligationCauseCode::RepeatElementCopy { is_constable, elt_type, elt_span, elt_stmt_span } => {
+            ObligationCauseCode::RepeatElementCopy {
+                is_constable,
+                elt_type,
+                elt_span,
+                elt_stmt_span,
+            } => {
                 err.note(
                     "the `Copy` trait is required because this value will be copied for each element of the array",
                 );
                 let value_kind = match is_constable {
                     IsConstable::Fn => Some("the result of the function call"),
                     IsConstable::Ctor => Some("the result of the constructor"),
-                    _ => None
+                    _ => None,
                 };
                 let sm = tcx.sess.source_map();
-                if let Some(value_kind) = value_kind &&
-                    let Ok(snip) = sm.span_to_snippet(elt_span)
+                if let Some(value_kind) = value_kind
+                    && let Ok(snip) = sm.span_to_snippet(elt_span)
                 {
                     let help_msg = format!(
                         "consider creating a new `const` item and initializing it with {value_kind} \
-                        to be used in the repeat position");
+                        to be used in the repeat position"
+                    );
                     let indentation = sm.indentation_before(elt_stmt_span).unwrap_or_default();
-                    err.multipart_suggestion(help_msg, vec![
-                        (elt_stmt_span.shrink_to_lo(), format!("const ARRAY_REPEAT_VALUE: {elt_type} = {snip};\n{indentation}")),
-                        (elt_span, "ARRAY_REPEAT_VALUE".to_string())
-                    ], Applicability::MachineApplicable);
+                    err.multipart_suggestion(
+                        help_msg,
+                        vec![
+                            (
+                                elt_stmt_span.shrink_to_lo(),
+                                format!(
+                                    "const ARRAY_REPEAT_VALUE: {elt_type} = {snip};\n{indentation}"
+                                ),
+                            ),
+                            (elt_span, "ARRAY_REPEAT_VALUE".to_string()),
+                        ],
+                        Applicability::MachineApplicable,
+                    );
                 }
 
-                if self.tcx.sess.is_nightly_build() && matches!(is_constable, IsConstable::Fn|IsConstable::Ctor) {
+                if self.tcx.sess.is_nightly_build()
+                    && matches!(is_constable, IsConstable::Fn | IsConstable::Ctor)
+                {
                     err.help(
                         "create an inline `const` block, see RFC #2920 \
                          <https://github.com/rust-lang/rfcs/pull/2920> for more information",
@@ -2957,7 +2977,9 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
             }
             ObligationCauseCode::SizedCoroutineInterior(coroutine_def_id) => {
                 let what = match self.tcx.coroutine_kind(coroutine_def_id) {
-                    None | Some(hir::CoroutineKind::Coroutine) | Some(hir::CoroutineKind::Gen(_)) => "yield",
+                    None
+                    | Some(hir::CoroutineKind::Coroutine)
+                    | Some(hir::CoroutineKind::Gen(_)) => "yield",
                     Some(hir::CoroutineKind::Async(..)) => "await",
                 };
                 err.note(format!(
@@ -3519,7 +3541,8 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
         {
             if let hir::Expr { kind: hir::ExprKind::Block(block, _), .. } = expr {
                 let inner_expr = expr.peel_blocks();
-                let ty = typeck_results.expr_ty_adjusted_opt(inner_expr)
+                let ty = typeck_results
+                    .expr_ty_adjusted_opt(inner_expr)
                     .unwrap_or(Ty::new_misc_error(tcx));
                 let span = inner_expr.span;
                 if Some(span) != err.span.primary_span() {
@@ -3538,14 +3561,13 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
                             tcx.lang_items().fn_once_trait(),
                             tcx.lang_items().fn_mut_trait(),
                             tcx.lang_items().fn_trait(),
-                        ].contains(&Some(pred.def_id()))
+                        ]
+                        .contains(&Some(pred.def_id()))
                     {
                         if let [stmt, ..] = block.stmts
                             && let hir::StmtKind::Semi(value) = stmt.kind
                             && let hir::ExprKind::Closure(hir::Closure {
-                                body,
-                                fn_decl_span,
-                                ..
+                                body, fn_decl_span, ..
                             }) = value.kind
                             && let body = hir.body(*body)
                             && !matches!(body.value.kind, hir::ExprKind::Block(..))
@@ -3568,9 +3590,11 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
                                 "you might have meant to create the closure instead of a block",
                                 format!(
                                     "|{}| ",
-                                    (0..pred.trait_ref.args.len() - 1).map(|_| "_")
+                                    (0..pred.trait_ref.args.len() - 1)
+                                        .map(|_| "_")
                                         .collect::<Vec<_>>()
-                                        .join(", ")),
+                                        .join(", ")
+                                ),
                                 Applicability::MaybeIncorrect,
                             );
                         }

compiler/rustc_trait_selection/src/traits/error_reporting/type_err_ctxt_ext.rs

@@ -928,10 +928,8 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
     }
 
     fn fn_arg_obligation(&self, obligation: &PredicateObligation<'tcx>) -> bool {
-        if let ObligationCauseCode::FunctionArgumentObligation {
-            arg_hir_id,
-            ..
-        } = obligation.cause.code()
+        if let ObligationCauseCode::FunctionArgumentObligation { arg_hir_id, .. } =
+            obligation.cause.code()
             && let Some(Node::Expr(arg)) = self.tcx.hir().find(*arg_hir_id)
             && let arg = arg.peel_borrows()
             && let hir::ExprKind::Path(hir::QPath::Resolved(

compiler/rustc_ty_utils/src/lib.rs

@@ -5,9 +5,9 @@
 //! This API is completely unstable and subject to change.
 
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
-#![cfg_attr(not(bootstrap), allow(internal_features))]
+#![doc(rust_logo)]
+#![feature(rustdoc_internals)]
+#![allow(internal_features)]
 #![feature(assert_matches)]
 #![feature(associated_type_defaults)]
 #![feature(iterator_try_collect)]

compiler/rustc_ty_utils/src/ty.rs

@@ -203,11 +203,7 @@ impl<'tcx> TypeVisitor<TyCtxt<'tcx>> for ImplTraitInTraitFinder<'_, 'tcx> {
                             "we shouldn't walk non-predicate binders with `impl Trait`...",
                         );
                     }
-                    ty::Region::new_bound(
-                        self.tcx,
-                        index.shifted_out_to_binder(self.depth),
-                        bv,
-                    )
+                    ty::Region::new_bound(self.tcx, index.shifted_out_to_binder(self.depth), bv)
                 } else {
                     re
                 }

library/alloc/src/lib.rs

@@ -78,8 +78,8 @@
     not(no_sync),
     target_has_atomic = "ptr"
 ))]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
-#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
+#![doc(rust_logo)]
+#![feature(rustdoc_internals)]
 #![no_std]
 #![needs_allocator]
 // Lints:

library/alloc/src/vec/into_iter.rs

@@ -285,9 +285,7 @@ impl<T, A: Allocator> Iterator for IntoIter<T, A> {
         // Also note the implementation of `Self: TrustedRandomAccess` requires
         // that `T: Copy` so reading elements from the buffer doesn't invalidate
         // them for `Drop`.
-        unsafe {
-            if T::IS_ZST { mem::zeroed() } else { ptr::read(self.ptr.add(i)) }
-        }
+        unsafe { if T::IS_ZST { mem::zeroed() } else { ptr::read(self.ptr.add(i)) } }
     }
 }
 

library/core/src/char/decode.rs

@@ -106,7 +106,7 @@ impl<I: Iterator<Item = u16>> Iterator for DecodeUtf16<I> {
     }
 }
 
-#[stable(feature = "decode_utf16_fused_iterator", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "decode_utf16_fused_iterator", since = "1.75.0")]
 impl<I: Iterator<Item = u16> + FusedIterator> FusedIterator for DecodeUtf16<I> {}
 
 impl DecodeUtf16Error {

library/core/src/escape.rs

@@ -21,13 +21,17 @@ pub(crate) fn escape_ascii_into(output: &mut [ascii::Char; 4], byte: u8) -> Rang
         b'\\' => backslash(ascii::Char::ReverseSolidus),
         b'\'' => backslash(ascii::Char::Apostrophe),
         b'\"' => backslash(ascii::Char::QuotationMark),
-        _ => if let Some(a) = byte.as_ascii() && !byte.is_ascii_control() {
+        _ => {
+            if let Some(a) = byte.as_ascii()
+                && !byte.is_ascii_control()
+            {
                 ([a, ascii::Char::Null, ascii::Char::Null, ascii::Char::Null], 1)
             } else {
                 let hi = HEX_DIGITS[usize::from(byte >> 4)];
                 let lo = HEX_DIGITS[usize::from(byte & 0xf)];
                 ([ascii::Char::ReverseSolidus, ascii::Char::SmallX, hi, lo], 4)
             }
+        }
     };
     *output = data;
     0..len

library/core/src/intrinsics.rs

@@ -1072,7 +1072,7 @@ extern "rust-intrinsic" {
     /// zero-initialization: This will statically either panic, or do nothing.
     ///
     /// This intrinsic does not have a stable counterpart.
-    #[rustc_const_stable(feature = "const_assert_type2", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_assert_type2", since = "1.75.0")]
     #[rustc_safe_intrinsic]
     #[rustc_nounwind]
     pub fn assert_zero_valid<T>();
@@ -1080,7 +1080,7 @@ extern "rust-intrinsic" {
     /// A guard for `std::mem::uninitialized`. This will statically either panic, or do nothing.
     ///
     /// This intrinsic does not have a stable counterpart.
-    #[rustc_const_stable(feature = "const_assert_type2", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_assert_type2", since = "1.75.0")]
     #[rustc_safe_intrinsic]
     #[rustc_nounwind]
     pub fn assert_mem_uninitialized_valid<T>();
@@ -2279,7 +2279,7 @@ extern "rust-intrinsic" {
     /// any safety invariants.
     ///
     /// The stabilized version of this intrinsic is [`core::mem::discriminant`].
-    #[rustc_const_stable(feature = "const_discriminant", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_discriminant", since = "1.75.0")]
     #[rustc_safe_intrinsic]
     #[rustc_nounwind]
     pub fn discriminant_value<T>(v: &T) -> <T as DiscriminantKind>::Discriminant;

library/core/src/iter/adapters/step_by.rs

@@ -83,11 +83,7 @@ where
     // last element. Used in the `DoubleEndedIterator` implementation.
     fn next_back_index(&self) -> usize {
         let rem = self.iter.len() % (self.step + 1);
-        if self.first_take {
-            if rem == 0 { self.step } else { rem - 1 }
-        } else {
-            rem
-        }
+        if self.first_take { if rem == 0 { self.step } else { rem - 1 } } else { rem }
     }
 }
 

library/core/src/iter/sources/from_coroutine.rs

@@ -11,8 +11,7 @@ use crate::pin::Pin;
 /// # Examples
 ///
 /// ```
-/// #![cfg_attr(bootstrap, feature(generators))]
-/// #![cfg_attr(not(bootstrap), feature(coroutines))]
+/// #![feature(coroutines)]
 /// #![feature(iter_from_coroutine)]
 ///
 /// let it = std::iter::from_coroutine(|| {

library/core/src/iter/traits/iterator.rs

@@ -69,7 +69,7 @@ fn _assert_is_object_safe(_: &dyn Iterator<Item = ()>) {}
     message = "`{Self}` is not an iterator"
 )]
 #[doc(notable_trait)]
-#[cfg_attr(not(bootstrap), lang = "iterator")]
+#[lang = "iterator"]
 #[rustc_diagnostic_item = "Iterator"]
 #[must_use = "iterators are lazy and do nothing unless consumed"]
 pub trait Iterator {

library/core/src/lib.rs

@@ -69,7 +69,7 @@
     test(no_crate_inject, attr(deny(warnings))),
     test(attr(allow(dead_code, deprecated, unused_variables, unused_mut)))
 )]
-#![cfg_attr(not(bootstrap), doc(rust_logo))]
+#![doc(rust_logo)]
 #![doc(cfg_hide(
     not(test),
     any(not(feature = "miri-test-libstd"), test, doctest),

library/core/src/mem/maybe_uninit.rs

@@ -398,7 +398,7 @@ impl<T> MaybeUninit<T> {
     #[rustc_allow_const_fn_unstable(const_mut_refs)]
     #[rustc_allow_const_fn_unstable(const_ptr_write)]
     #[rustc_allow_const_fn_unstable(const_maybe_uninit_as_mut_ptr)]
-    #[rustc_const_stable(feature = "const_maybe_uninit_zeroed", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_maybe_uninit_zeroed", since = "1.75.0")]
     pub const fn zeroed() -> MaybeUninit<T> {
         let mut u = MaybeUninit::<T>::uninit();
         // SAFETY: `u.as_mut_ptr()` points to allocated memory.
@@ -691,10 +691,7 @@ impl<T> MaybeUninit<T> {
     /// // they both get dropped!
     /// ```
     #[stable(feature = "maybe_uninit_extra", since = "1.60.0")]
-    #[rustc_const_stable(
-        feature = "const_maybe_uninit_assume_init_read",
-        since = "CURRENT_RUSTC_VERSION"
-    )]
+    #[rustc_const_stable(feature = "const_maybe_uninit_assume_init_read", since = "1.75.0")]
     #[inline(always)]
     #[track_caller]
     pub const unsafe fn assume_init_read(&self) -> T {

library/core/src/mem/mod.rs

@@ -647,7 +647,7 @@ pub const fn needs_drop<T: ?Sized>() -> bool {
 #[allow(deprecated)]
 #[rustc_diagnostic_item = "mem_zeroed"]
 #[track_caller]
-#[rustc_const_stable(feature = "const_mem_zeroed", since = "CURRENT_RUSTC_VERSION")]
+#[rustc_const_stable(feature = "const_mem_zeroed", since = "1.75.0")]
 pub const unsafe fn zeroed<T>() -> T {
     // SAFETY: the caller must guarantee that an all-zero value is valid for `T`.
     unsafe {
@@ -1208,7 +1208,7 @@ impl<T> fmt::Debug for Discriminant<T> {
 /// // assert_eq!(0, unsafe { std::mem::transmute::<_, u8>(std::mem::discriminant(&unit_like)) });
 /// ```
 #[stable(feature = "discriminant_value", since = "1.21.0")]
-#[rustc_const_stable(feature = "const_discriminant", since = "CURRENT_RUSTC_VERSION")]
+#[rustc_const_stable(feature = "const_discriminant", since = "1.75.0")]
 #[cfg_attr(not(test), rustc_diagnostic_item = "mem_discriminant")]
 #[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
 pub const fn discriminant<T>(v: &T) -> Discriminant<T> {
@@ -1358,7 +1358,7 @@ impl<T> SizedTypeProperties for T {}
 ///
 /// ```
 /// #![feature(offset_of)]
-/// # #![cfg_attr(not(bootstrap), feature(offset_of_enum))]
+/// # #![feature(offset_of_enum)]
 ///
 /// use std::mem;
 /// #[repr(C)]
@@ -1388,12 +1388,9 @@ impl<T> SizedTypeProperties for T {}
 ///     B { one: u8, two: u16 },
 /// }
 ///
-/// # #[cfg(not(bootstrap))]
 /// assert_eq!(mem::offset_of!(Enum, A.0), 1);
-/// # #[cfg(not(bootstrap))]
 /// assert_eq!(mem::offset_of!(Enum, B.two), 2);
 ///
-/// # #[cfg(not(bootstrap))]
 /// assert_eq!(mem::offset_of!(Option<&u8>, Some.0), 0);
 /// ```
 #[unstable(feature = "offset_of", issue = "106655")]

library/core/src/net/ip_addr.rs

@@ -425,8 +425,8 @@ impl IpAddr {
     #[inline]
     #[must_use = "this returns the result of the operation, \
                   without modifying the original"]
-    #[stable(feature = "ip_to_canonical", since = "CURRENT_RUSTC_VERSION")]
-    #[rustc_const_stable(feature = "ip_to_canonical", since = "CURRENT_RUSTC_VERSION")]
+    #[stable(feature = "ip_to_canonical", since = "1.75.0")]
+    #[rustc_const_stable(feature = "ip_to_canonical", since = "1.75.0")]
     pub const fn to_canonical(&self) -> IpAddr {
         match self {
             IpAddr::V4(_) => *self,
@@ -1757,7 +1757,7 @@ impl Ipv6Addr {
     #[must_use = "this returns the result of the operation, \
                   without modifying the original"]
     #[stable(feature = "ipv6_to_ipv4_mapped", since = "1.63.0")]
-    #[rustc_const_stable(feature = "const_ipv6_to_ipv4_mapped", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_ipv6_to_ipv4_mapped", since = "1.75.0")]
     pub const fn to_ipv4_mapped(&self) -> Option<Ipv4Addr> {
         match self.octets() {
             [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff, a, b, c, d] => {
@@ -1825,8 +1825,8 @@ impl Ipv6Addr {
     #[inline]
     #[must_use = "this returns the result of the operation, \
                   without modifying the original"]
-    #[stable(feature = "ip_to_canonical", since = "CURRENT_RUSTC_VERSION")]
-    #[rustc_const_stable(feature = "ip_to_canonical", since = "CURRENT_RUSTC_VERSION")]
+    #[stable(feature = "ip_to_canonical", since = "1.75.0")]
+    #[rustc_const_stable(feature = "ip_to_canonical", since = "1.75.0")]
     pub const fn to_canonical(&self) -> IpAddr {
         if let Some(mapped) = self.to_ipv4_mapped() {
             return IpAddr::V4(mapped);
@@ -2128,7 +2128,7 @@ impl From<[u16; 8]> for IpAddr {
     }
 }
 
-#[stable(feature = "ip_bitops", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "ip_bitops", since = "1.75.0")]
 impl Not for Ipv4Addr {
     type Output = Ipv4Addr;
 
@@ -2141,7 +2141,7 @@ impl Not for Ipv4Addr {
     }
 }
 
-#[stable(feature = "ip_bitops", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "ip_bitops", since = "1.75.0")]
 impl Not for &'_ Ipv4Addr {
     type Output = Ipv4Addr;
 
@@ -2151,7 +2151,7 @@ impl Not for &'_ Ipv4Addr {
     }
 }
 
-#[stable(feature = "ip_bitops", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "ip_bitops", since = "1.75.0")]
 impl Not for Ipv6Addr {
     type Output = Ipv6Addr;
 
@@ -2164,7 +2164,7 @@ impl Not for Ipv6Addr {
     }
 }
 
-#[stable(feature = "ip_bitops", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "ip_bitops", since = "1.75.0")]
 impl Not for &'_ Ipv6Addr {
     type Output = Ipv6Addr;
 
@@ -2246,13 +2246,13 @@ macro_rules! bitop_impls {
 }
 
 bitop_impls! {
-    #[stable(feature = "ip_bitops", since = "CURRENT_RUSTC_VERSION")]
+    #[stable(feature = "ip_bitops", since = "1.75.0")]
     impl (BitAnd, BitAndAssign) for Ipv4Addr = (bitand, bitand_assign);
-    #[stable(feature = "ip_bitops", since = "CURRENT_RUSTC_VERSION")]
+    #[stable(feature = "ip_bitops", since = "1.75.0")]
     impl (BitOr, BitOrAssign) for Ipv4Addr = (bitor, bitor_assign);
 
-    #[stable(feature = "ip_bitops", since = "CURRENT_RUSTC_VERSION")]
+    #[stable(feature = "ip_bitops", since = "1.75.0")]
     impl (BitAnd, BitAndAssign) for Ipv6Addr = (bitand, bitand_assign);
-    #[stable(feature = "ip_bitops", since = "CURRENT_RUSTC_VERSION")]
+    #[stable(feature = "ip_bitops", since = "1.75.0")]
     impl (BitOr, BitOrAssign) for Ipv6Addr = (bitor, bitor_assign);
 }

library/core/src/ops/coroutine.rs

@@ -7,8 +7,7 @@ use crate::pin::Pin;
 /// possible return values of a coroutine. Currently this corresponds to either
 /// a suspension point (`Yielded`) or a termination point (`Complete`).
 #[derive(Clone, Copy, PartialEq, PartialOrd, Eq, Ord, Debug, Hash)]
-#[cfg_attr(bootstrap, lang = "generator_state")]
-#[cfg_attr(not(bootstrap), lang = "coroutine_state")]
+#[lang = "coroutine_state"]
 #[unstable(feature = "coroutine_trait", issue = "43122")]
 pub enum CoroutineState<Y, R> {
     /// The coroutine suspended with a value.
@@ -40,8 +39,7 @@ pub enum CoroutineState<Y, R> {
 /// closure-like:
 ///
 /// ```rust
-/// #![cfg_attr(bootstrap, feature(generators))]
-/// #![cfg_attr(not(bootstrap), feature(coroutines))]
+/// #![feature(coroutines)]
 /// #![feature(coroutine_trait)]
 ///
 /// use std::ops::{Coroutine, CoroutineState};
@@ -68,8 +66,7 @@ pub enum CoroutineState<Y, R> {
 ///
 /// [RFC 2033]: https://github.com/rust-lang/rfcs/pull/2033
 /// [unstable book]: ../../unstable-book/language-features/coroutines.html
-#[cfg_attr(bootstrap, lang = "generator")]
-#[cfg_attr(not(bootstrap), lang = "coroutine")]
+#[lang = "coroutine"]
 #[unstable(feature = "coroutine_trait", issue = "43122")]
 #[fundamental]
 pub trait Coroutine<R = ()> {

library/core/src/ops/function.rs

@@ -56,7 +56,7 @@ use crate::marker::Tuple;
 #[lang = "fn"]
 #[stable(feature = "rust1", since = "1.0.0")]
 #[rustc_paren_sugar]
-#[cfg_attr(not(bootstrap), rustc_on_unimplemented(
+#[rustc_on_unimplemented(
     on(
         Args = "()",
         note = "wrap the `{Self}` in a closure with no arguments: `|| {{ /* code */ }}`"
@@ -69,7 +69,7 @@ use crate::marker::Tuple;
     ),
     message = "expected a `{Trait}` closure, found `{Self}`",
     label = "expected an `{Trait}` closure, found `{Self}`"
-))]
+)]
 #[fundamental] // so that regex can rely that `&str: !FnMut`
 #[must_use = "closures are lazy and do nothing unless called"]
 // FIXME(effects) #[const_trait]
@@ -143,7 +143,7 @@ pub trait Fn<Args: Tuple>: FnMut<Args> {
 #[lang = "fn_mut"]
 #[stable(feature = "rust1", since = "1.0.0")]
 #[rustc_paren_sugar]
-#[cfg_attr(not(bootstrap), rustc_on_unimplemented(
+#[rustc_on_unimplemented(
     on(
         Args = "()",
         note = "wrap the `{Self}` in a closure with no arguments: `|| {{ /* code */ }}`"
@@ -156,7 +156,7 @@ pub trait Fn<Args: Tuple>: FnMut<Args> {
     ),
     message = "expected a `{Trait}` closure, found `{Self}`",
     label = "expected an `{Trait}` closure, found `{Self}`"
-))]
+)]
 #[fundamental] // so that regex can rely that `&str: !FnMut`
 #[must_use = "closures are lazy and do nothing unless called"]
 // FIXME(effects) #[const_trait]
@@ -222,7 +222,7 @@ pub trait FnMut<Args: Tuple>: FnOnce<Args> {
 #[lang = "fn_once"]
 #[stable(feature = "rust1", since = "1.0.0")]
 #[rustc_paren_sugar]
-#[cfg_attr(not(bootstrap), rustc_on_unimplemented(
+#[rustc_on_unimplemented(
     on(
         Args = "()",
         note = "wrap the `{Self}` in a closure with no arguments: `|| {{ /* code */ }}`"
@@ -235,7 +235,7 @@ pub trait FnMut<Args: Tuple>: FnOnce<Args> {
     ),
     message = "expected a `{Trait}` closure, found `{Self}`",
     label = "expected an `{Trait}` closure, found `{Self}`"
-))]
+)]
 #[fundamental] // so that regex can rely that `&str: !FnMut`
 #[must_use = "closures are lazy and do nothing unless called"]
 // FIXME(effects) #[const_trait]

library/core/src/option.rs

@@ -765,7 +765,7 @@ impl<T> Option<T> {
     /// ```
     #[inline]
     #[must_use]
-    #[stable(feature = "option_as_slice", since = "CURRENT_RUSTC_VERSION")]
+    #[stable(feature = "option_as_slice", since = "1.75.0")]
     pub fn as_slice(&self) -> &[T] {
         // SAFETY: When the `Option` is `Some`, we're using the actual pointer
         // to the payload, with a length of 1, so this is equivalent to
@@ -819,7 +819,7 @@ impl<T> Option<T> {
     /// ```
     #[inline]
     #[must_use]
-    #[stable(feature = "option_as_slice", since = "CURRENT_RUSTC_VERSION")]
+    #[stable(feature = "option_as_slice", since = "1.75.0")]
     pub fn as_mut_slice(&mut self) -> &mut [T] {
         // SAFETY: When the `Option` is `Some`, we're using the actual pointer
         // to the payload, with a length of 1, so this is equivalent to

library/core/src/panic.rs

@@ -47,7 +47,7 @@ pub macro panic_2015 {
 #[allow_internal_unstable(core_panic, const_format_args)]
 #[rustc_diagnostic_item = "core_panic_2021_macro"]
 #[rustc_macro_transparency = "semitransparent"]
-#[cfg(any(bootstrap, feature = "panic_immediate_abort"))]
+#[cfg(feature = "panic_immediate_abort")]
 pub macro panic_2021 {
     () => (
         $crate::panicking::panic("explicit panic")
@@ -75,7 +75,7 @@ pub macro panic_2021 {
 )]
 #[rustc_diagnostic_item = "core_panic_2021_macro"]
 #[rustc_macro_transparency = "semitransparent"]
-#[cfg(not(any(bootstrap, feature = "panic_immediate_abort")))]
+#[cfg(not(feature = "panic_immediate_abort"))]
 pub macro panic_2021 {
     () => ({
         // Create a function so that the argument for `track_caller`