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`rustc_feature` cleanups - #162051

Merged

rust-bors[bot] merged 9 commits into

rust-lang:mainfrom

nnethercote:rustc_feature-cleanups

Sep 1, 2026

Merged

`rustc_feature` cleanups#162051
rust-bors[bot] merged 9 commits into
rust-lang:mainfrom
nnethercote:rustc_feature-cleanups

Commits on Aug 31, 2026
- `BUILTIN_ATTRIBUTE_MAP` improvements
  nnethercote
  committed
  2a534f5
- Use `GateFn` in `AttributeStability`
  nnethercote
  committed
  9670dfa
- Derive `StableHash` for three feature structs
  nnethercote
  committed
  cd09177
- Return a slice instead of `&Vec<T>` in two methods
  nnethercote
  committed
  b18fed1
- Various comment improvements
  nnethercote
  committed
  799c6d0
- Use `NonZero<u32>` consistently
  nnethercote
  committed
  6146d3a
- Add a missing backtick
  nnethercote
  committed
  ca967fa
- Streamline a check
  nnethercote
  committed
  ef2ae3a
- Simplify `find_gated_cfg`
  nnethercote
  committed
  60be562