Implement unstable trait impl - #140399

Merged

bors merged 8 commits into

rust-lang:masterfrom

tiif:unstable_impl

Jul 17, 2025

Commits on Jul 15, 2025

Setup unstable feature bound attribute
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fecd998
Lower the UnstableFeatureBound predicate to UnstableFeature predicate
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2586185
Add the core logic in old and new solvers
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1e5c7b2
Make stability attribute not to error when unstable feature bound is in effect
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ab29256
Lint against having both #[unstable_feature_bound] and #[stable] on the same item
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dd067a6
Implement other logics
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7356ff7
Add tests
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7dd2818
Fix CI
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e331de1