2019-10-24

Announcments

@simulacrum landed the rustc-dev split PR which decreases the size of the rustc-dev rustup component #65474

Avoid ICE when adjusting bad self ty #65755
- Accepted for beta and stable backport
Avoid ICE when checking Destination of break inside a closure #65518
- Accepted for beta and stable backport
save-analysis: Nest tables when processing impl block definitions #65511
- Accepted for beta backport
save-analysis: Don’t ICE when resolving qualified type paths in struct members #65353
- Accepted for beta backport

Rust 1.40 (current nightly) will be the first stable release without the HIR borrow checker. This means Non Lexical Lifetimes will be available on Rust 2015.
At this point, wg-nll has completed its purpose and will be disbanded.
- wg-polonius is still going strong though!

Work is proceeding slowly but steadily. There are regular triage meetings every Monday on the compiler calendar.
The current goal is to refactor/audit compiler locks and other parts of the parallel query system and to investigate improving performance.
The current MVP is to do high-level parallelization in a few critical places such as typechecking & linting.
Currently, we’re not seeing the speedups we want from parallelization but work is ongoing to remove locking and improve the jobserver integration.
Video recording of last meeting