Rollup of 5 pull requests#151924

Merged

rust-bors[bot] merged 12 commits intorust-lang:mainfrom

JonathanBrouwer:rollup-Pqp8PIn

Feb 1, 2026

Commits on Dec 27, 2025

Constify `fmt::from_fn`
EFanZh
committed

Commits on Jan 14, 2026

Add test for feature-gating `mut ref` patterns in struct field shorthand.
zachs18
committed
Feature-gate `mut ref` patterns in struct field shorthand.
zachs18
committed

Commits on Jan 30, 2026

Skip unused_allocation lint when method takes &Box<Self>
chenyukang
committed

Commits on Jan 31, 2026