Scheduled to be released on 2020-07-16. Commit planned for next week (2020-07-20) around the same time this review was opened.
https://github.com/rust-lang/rust/blob/stable/RELEASES.md#version-1450-2020-07-16
Other port changes:
- Bundled LLVM was updated to 10.0.1 so drop many patches (assuming it's fine on powerpc64 since devel/llvm10 does not have any patches for it either)
- Switch LLVM build to Ninja for some minor build time improvements (do not expect wonders; it only saved like 5 minutes here)