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Rollup of 4 pull requests#67866

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bors merged 11 commits intorust-lang:masterrust-lang/rust:masterfrom GuillaumeGomez:rollup-32vsg5bGuillaumeGomez/rust:rollup-32vsg5bCopy head branch name to clipboardJan 4, 2020

+204-218

Commits

Commits on Jan 3, 2020

• Revert const_err lint checking of casts

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  wesleywiser

  committed
  8e4886d

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• improve generic Drop error messages

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  euclio

  committed
  e589358

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• clarify that Drop can be implemented for enums and unions too

  euclio

  committed
  e9990bc

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• Small error explanations cleanup

  GuillaumeGomez

  committed
  ec64bbb

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• Clean up E0164 explanation

  GuillaumeGomez

  committed
  aab4276

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• Remove unused #[link_name = "m"] attributes

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  ollie27

  committed
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Commits on Jan 4, 2020

• Update E0164.md

  Dylan-DPC

  authored
  062cd78

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• Rollup merge of rust-lang#67822 - wesleywiser:revert_67676, r=oli-obk

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  GuillaumeGomez

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  a469b17

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• Rollup merge of rust-lang#67823 - euclio:drop-improvements, r=petrochenkov

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  GuillaumeGomez

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  1140cee

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• Rollup merge of rust-lang#67837 - GuillaumeGomez:clean-up-err-codes, r=Dylan-DPC

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  GuillaumeGomez

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  5c73be1

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• Rollup merge of rust-lang#67848 - ollie27:float_link_name_attr, r=Dylan-DPC

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  GuillaumeGomez

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  a86a189

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