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Use rustc_lint's is_ty_must_use #16606

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Use rustc_lint's is_ty_must_use#16606
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samueltardieu
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C-enhancementCategory: Enhancement of lints, like adding more cases or adding help messagesS-blockedStatus: marked as blocked ❌ on something else such as an RFC or other implementation work
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@samueltardieu
samueltardieu
opened on Feb 21, 2026

Description

Once rust-lang/rust#148214 is merged, it would be if Clippy could use rustc_lint's is_ty_must_use instead of having its own (currently outdated) view of the situation.

See this Zulip thread for more context.

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C-enhancementCategory: Enhancement of lints, like adding more cases or adding help messagesS-blockedStatus: marked as blocked ❌ on something else such as an RFC or other implementation work

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