Rollup of 4 pull requests#150559

Merged

bors merged 8 commits intorust-lang:mainfrom

JonathanBrouwer:rollup-59hbbmm

Jan 1, 2026

Commits on Dec 22, 2025

split up tracking issue for target feature feature gates
RalfJung
committed

Commits on Dec 29, 2025

`crate::io::Result` → `io::Result` in most places
tbu-
committed

Commits on Dec 31, 2025