2019-12-19

Announcements

• @pnkfelix has moved back to the USA

• There will be a new Rust release by end-of-day

• @michaelwoerister has a PR up that adds support for recording query-keys during a -Z self-profile session #67397

• @matthewjasper and @wesleywiser have been asked to join the compiler team as full members and both have accepted

• @centril is working on a stabilization report for sub-slice patterns

Backport nominations

• Don’t suppress move errors for union fields #67314

  • Deferred until next week

• Do not ICE on unnamed future #67289

  • Accepted for beta backport

Working group sync

wg-parallel-rustc

• Posted an Internals thread to gather feedback from users trying out the parallel compiler build

• @joshtriplett has done some profiling on a 72 core machine which may have revealed a deadlock and some scalability issues, which they’ll be looking into

• The current overall plan is to evaluate the performance and other reports on the internals thread, and then likely move forward on shipping the parallel compiler early in the new year with the default thread count still capped at 4