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Once impl_trait_in_bindings is stable, suggest using it in local bindings #63527

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Once impl_trait_in_bindings is stable, suggest using it in local bindings#63527
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A-diagnosticsArea: Messages for errors, warnings, and lintsA-suggestion-diagnosticsArea: Suggestions generated by the compiler applied by `cargo fix`C-enhancementCategory: An issue proposing an enhancement or a PR with one.F-impl_trait_in_bindings`#![feature(impl_trait_in_bindings)]`S-blockedStatus: Blocked on something else such as an RFC or other implementation work.T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.requires-nightlyThis issue requires a nightly compiler in some way.
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opened on Aug 13, 2019

#63507 (comment) introduces a check to not suggest let foo: impl Trait. Once this is valid, we should remove that gate.

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    A-diagnosticsArea: Messages for errors, warnings, and lintsA-suggestion-diagnosticsArea: Suggestions generated by the compiler applied by `cargo fix`C-enhancementCategory: An issue proposing an enhancement or a PR with one.F-impl_trait_in_bindings`#![feature(impl_trait_in_bindings)]`S-blockedStatus: Blocked on something else such as an RFC or other implementation work.T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.requires-nightlyThis issue requires a nightly compiler in some way.

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