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rust/compiler/rustc_errors
Jonathan Brouwer 1c44dbd580 Rollup merge of #152164 - mu001999-contrib:lint/unused_features, r=JonathanBrouwer
Lint unused features

*[View all comments](https://triagebot.infra.rust-lang.org/gh-comments/rust-lang/rust/pull/152164)*

Fixes rust-lang/rust#44232
Fixes rust-lang/rust#151752

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This PR records used features through query side effect, then reports unsued features finally.
2026-03-04 19:30:36 +01:00
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