jyn

This could also mention `git range-diff` for reviewers: https://github.com/rust-lang/rust/pull/76571#issuecomment-691668496

Related: https://github.com/rust-lang/triagebot/issues/821

The remaining things to cover after #890: - [x] `git range-diff` - [x] `git rebase -i master`, `git rebase -i $(git merge-base HEAD master)` - [ ] Possibly instructions for...

> This one is mostly useful for reviewers Right, I was imagining a separate 'git for reviewers' section, maybe even on a separate page so they're easy to distinguish. >...

I think @oli-obk is on break - @RalfJung would you be interested in following up on this? NBD if not, it can wait until they get back.

> I'm fine with moving to a per line scheme, but is their tooling that will do this automatically. It would be a huge when to not have to think...

My ide experience with rustc has not been great. Setting any tool to run `x.py check` in the background completely breaks my build directory because x.py doesn't have build locks...

Stock rust-analyzer runs `cargo check` in the background AFAIK. Either that or there's something else breaking my build directory 👀

@mark-i-m do you think this was addressed by #857? Or is there more info that should be added?

> Why can't we make rustc build with beta std or vice versa? This is a policy decision (that I don't agree with, but has merits). See https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/Building.20rustc.20with.20beta.20libstd for a...