Rollup of 4 pull requests - #150559

Merged

bors merged 8 commits into

rust-lang:mainfrom

JonathanBrouwer:rollup-59hbbmm

Jan 1, 2026

Commits on Dec 22, 2025

split up tracking issue for target feature feature gates
RalfJung
committed
a8e5693

Commits on Dec 29, 2025

`crate::io::Result` → `io::Result` in most places
tbu-
committed
440bf4d

Commits on Dec 31, 2025

Enable thumb interworking on ARMv7A/R and ARMv8R bare-metal targets
adamgreig
committed
59a3ad3
Rewrite a `loop` as tail recursion
dianne
committed
6b60e81

Commits on Jan 1, 2026