Rollup of 6 pull requests#142689

Merged

bors merged 16 commits intorust-lang:masterfrom

Urgau:rollup-4ho6835

Jun 19, 2025

Commits on Jun 7, 2025

Add `-Z hint-mostly-unused` to tell rustc that most of a crate will go unused
joshtriplett
committed

Commits on Jun 14, 2025

Prepare `rustc-dev` component un-remapping in the compiler
Urgau
committed

Commits on Jun 15, 2025

Commits on Jun 16, 2025

Commits on Jun 18, 2025