​​Async Await Triage 2019.02.20

​​Issue list

  • ​​Current:

​​Categories

  • ​​Must fix before stabilize
  • ​​ICE around debruijn indices:
  • ​​inappropriate yield — ought to be an error regardless
  • ​​would change semantics of existing code if we should alter it
  • ​​needs decision
  • ​​also consider _​ patterns
  • ​​should disallow async fn
  • ​​UX Higher Priority
  • ​​reference to yield outside of generator
  • ​​UX “Annoyances” — not must fix
  • ​​seems bad but not burning problem
  • ​​would be nice to suggest switching to 2018 but not a blocker 
  • ​​Needs investigation
  • ​​unclear if this is something we can fix “easily” enough through NLL?
  • ​​symptom of a larger problem where lifetimes of intermediates becomes more visible
  • ​​seems worth investigating but the general problem is not solveable
  • ​​I suspect the problem is caused by a “first approximation” of what we may capture
  • ​​probably not too hard to fix, but seems “just wrong”
  • ​​needs someone to look at it
  • ​​dyn Send​: dyn Send
  • ​​for<'r> ('r: 'static)​ ..?
  • ​​ICE around debruijn indices
  • ​​Unsure
  • ​​blocked on generator arguments?
  • ​​related to the requirement to use Captures<'tcx>​  and deal with the hidden lifetimes in impl trait situation