Triage digest: Thu Oct 22 2015

[triagebot]

Nominated (I-nominated) issues

Collisions in type_id (#10389)

• Added I-nominated. By @pnkfelix

Method lookup goes down the auto-deref rabbit hole when it doesn't need to (#19509)

Tracking issue for `read_exact` (RFC #980) (#27585)

• Added I-nominated. By @sfackler

Allow where clauses involving types which don't include a type parameter. (#27972)

Expected compile error because bad use of semicolon (#28157)

• Added I-nominated. By @alexcrichton

  triage: I-nominated

stdlib Path has inconsistent normalisation behaviour (#29008)

• Added I-nominated. By @alexcrichton

  triage: I-nominated

unsafe const fn declaration order (#29107)

• Added I-needs-decision. By @brson
• Added I-nominated. By @brson

Lifetime bounds in Copy impls are ignored (#29149)

• Added I-nominated. By @nikomatsakis

Beta-nominated issues

Remaining issues

Settle execution order uncertainty for `+=` (#28160)

• Added P-medium. By @nikomatsakis

  triage: P-medium

#28669 caused regression compiling pinyin crate on nightly (#28853)

• Added P-high. By @nikomatsakis

  triage: P-high

Nightly regression: lifetime error with autoderef (#28854)

• Added P-high. By @nikomatsakis

  triage: P-high

Nightly regression around HRTBs, likely connected to wf changes (#28934)

• Added P-high. By @nikomatsakis

  triage: P-high

Nightly regression in borrow checker (#28936)

• Added P-medium. By @nikomatsakis

  triage: P-medium

• Added P-low. By @nikomatsakis

  triage: P-low

rustc produces invalid IR with -O -g (#28947)

• Added I-nominated. By @pnkfelix
• Added P-medium. By @nikomatsakis

  triage: P-medium

Nightly regression: Incorrect "parameter type may not live long enough" warning (#29048)

• Added P-high. By @nikomatsakis

  triage: P-high

  Assigning to myself. The problem has to do with a lifetime parameter being created as part of the autoderef loop during method probing. Best fix might be to isolate probing, if we can, but there are other workarounds we could put in place. Improving region compilation would be good too. Not sure what I think is the preferred fix just now.

Unsoundness in borrowck around deref and mutable refs (#29053)

• Added P-high. By @nikomatsakis

  triage: P-high

  My preferred fix would be to go through MIR, but this may be worth fixing another way.

Nightly borrowck regression (#29103)

• Added I-nominated. By @alexcrichton

  triage: I-nominated

• Added P-high. By @nikomatsakis

  triage: P-high

`Arc` and `Rc` are dropck-unsound (#29106)

• Added I-nominated. By @alexcrichton

  triage: I-nominated

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