Address comments, and refer to the issue the same way existing code does

Author: semicoleon

compiler/rustc_passes/src/stability.rs

@@ -1,7 +1,6 @@
 //! A pass that annotates every item and method with its stability level,
 //! propagating default levels lexically from parent to children ast nodes.
 
-use hir::ItemKind;
 use rustc_attr::{self as attr, ConstStability, Stability};
 use rustc_data_structures::fx::{FxHashSet, FxIndexMap};
 use rustc_errors::struct_span_err;
@@ -10,7 +9,7 @@ use rustc_hir::def::{DefKind, Res};
 use rustc_hir::def_id::{LocalDefId, CRATE_DEF_ID};
 use rustc_hir::hir_id::CRATE_HIR_ID;
 use rustc_hir::intravisit::{self, Visitor};
-use rustc_hir::{FieldDef, Generics, HirId, Item, TraitRef, Ty, TyKind, Variant};
+use rustc_hir::{FieldDef, Generics, HirId, Item, ItemKind, TraitRef, Ty, TyKind, Variant};
 use rustc_middle::hir::nested_filter;
 use rustc_middle::middle::privacy::AccessLevels;
 use rustc_middle::middle::stability::{AllowUnstable, DeprecationEntry, Index};
@@ -825,6 +824,8 @@ impl<'tcx> Visitor<'tcx> for Checker<'tcx> {
 }
 
 /// Check whether a path is a `use` item that has been marked as unstable.
+///
+/// See issue #94972 for details on why this is a special case
 fn is_unstable_reexport<'tcx>(tcx: TyCtxt<'tcx>, id: hir::HirId) -> bool {
     // Get the LocalDefId so we can lookup the item to check the kind.
     let Some(def_id) = tcx.hir().opt_local_def_id(id) else { return false};

src/test/ui/stability-attribute/allow-unstable-reexport.rs

@@ -1,4 +1,5 @@
-// Allow an unstable re-export without requiring a feature gate. https://github.com/rust-lang/rust/issues/94972
+// Allow an unstable re-export without requiring a feature gate. 
+// #94972
 
 // aux-build:lint-stability.rs
 // aux-build:lint-stability-reexport.rs