I know this: In each release cycle, the
beta channel is branched off from master (≈ nightly), then collects backports to fix known bugs before it becomes stable.
I don't know this: How quickly after a given backport can I expect
rustup update beta to show the fix? Is it the same release schedule as nightly, or is it manual? (And while we're at it, when in the day is the
nightly channel cut and published?)
Is any of this documented somewhere? https://forge.rust-lang.org/ talks about various manual operations related to releases but not the automated operations. (In the case that prompted this, I know the patch I was looking for was “last-minute” included in stable, but I'm wondering what to expect in the future.)