re-add a warning for old master branch, but with much simpler logic#135301

Merged

bors merged 2 commits intorust-lang:masterfrom

lolbinarycat:bootstrap-old-master-resurected

Jan 11, 2025

Commits on Jan 9, 2025

re-add a warning for old master branch, but with much simpler logic
lolbinarycat
committed

Commits on Jan 11, 2025

never print the warning on CI
lolbinarycat
committed