Rollup of 4 pull requests#151664

Closed

jhpratt wants to merge 10 commits intorust-lang:mainfrom

jhpratt:rollup-scDdbzg

Commits on Jan 22, 2026

Add missing mut to pin.rs docs

justanotheranonymoususer
authored and
joboet
committed

Commits on Jan 23, 2026

refactor rustc-hash integration
llogiq
committed

Commits on Jan 24, 2026

Fix is_ascii performance on x86_64 with explicit SSE2 intrinsics
bonega
committed

Commits on Jan 25, 2026