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[beta] backport rollup#65708

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bors merged 26 commits intorust-lang:betarust-lang/rust:betafrom

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Oct 26, 2019

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Commits on Oct 22, 2019

• Add troubleshooting section to PGO chapter in rustc book.

  

  michaelwoerister

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• Auto merge of #65302 - msizanoen1:fix-armv7-segfault, r=alexcrichton

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  bors

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• Add expanded type cache to OpaqueTypeExpander

  

  tmandry

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• Only expand types that contain projections

  

  tmandry

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• use precalculated dominators in explain_borrow

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  tanriol

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• Ensure that associated `async fn`s have unique fresh param names

  

  matthewjasper

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• Account for macro invocation in `let mut $pat` diagnostic.

  

  Centril

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• Auto merge of #65020 - pnkfelix:targetted-fix-for-always-marking-rust-abi-unwind-issue-64655, r=alexcrichton

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  bors

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• typeck: silence unreachable code from await

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  davidtwco

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Commits on Oct 26, 2019

• async/await: improve obligation errors

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  davidtwco

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• syntax: fix #64682.

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  Centril

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• Upgrade async/await to "used" keywords.

  

  ehuss

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• Filter out stmts made for the redundant_semicolon lint when pretty-printing

  

  nathanwhit

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• Add test for redundant_semicolon lint interaction with proc macro attrs

  

  nathanwhit

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• Fix async/await ICE #64964

  

  sinkuu

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• Do not collect to vec for debug output

  

  sinkuu

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• Pacify tidy

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• workaround msys2 bug

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• Revert "Auto merge of #62948 - matklad:failable-file-loading, r=petrochenkov"

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  matklad

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• Use empty typeck tables when nesting on items without those

  

  Xanewok

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• Test an assoc. type in struct member def inside fn

  

  Xanewok

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• Nest typeck tables when processing struct member types

  

  Xanewok

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• save-analysis: Nest tables when processing impl items

  

  Xanewok

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• save-analysis: Add a relevant test case

  

  Xanewok

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• Avoid ICE when checking `Destination` of `break` inside a closure

  

  estebank

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• Avoid ICE when adjusting bad self ty

  

  estebank

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