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Rollup of 3 pull requests#68363

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bors merged 9 commits intorust-lang:masterrust-lang/rust:masterfrom Dylan-DPC-zz:rollup-33enndvDylan-DPC-zz/rust:rollup-33enndvCopy head branch name to clipboardJan 19, 2020

+26-18

Commits

Commits on Jan 16, 2020

• clean up E0195 explanation

  GuillaumeGomez

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  a1a0aea

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• clean up E0197 explanation

  GuillaumeGomez

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Commits on Jan 18, 2020

• Make iter::Empty<T> implement Send and Sync for any T

  KamilaBorowska

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• Add a test for iter::empty::<*mut i32> being Sync and Send

  KamilaBorowska

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• [const-prop] Remove useless typedef

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  wesleywiser

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  e1f70f7

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• [const-prop] Run x.py fmt

  wesleywiser

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Commits on Jan 19, 2020

• Rollup merge of rust-lang#67682 - wesleywiser:remove_opty_const_typedef, r=Dylan-DPC

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  Dylan-DPC

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• Rollup merge of rust-lang#68247 - GuillaumeGomez:clean-up-err-codes, r=Dylan-DPC

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  Dylan-DPC

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• Rollup merge of rust-lang#68348 - xfix:patch-14, r=nagisa

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  Dylan-DPC

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