and I had no idea this was a thing: https://bitbucket.org/blog/sunsetting-mercurial-support-in-bitbucket

>After much consideration, we've decided to remove Mercurial support from Bitbucket Cloud and its API. Mercurial features and repositories will be officially removed from Bitbucket and its API on June 1, 2020.

Unlike with code.google.com's shutdown and transition to long term archive, there's no archiving happening on the part of Bitbucket. Once June 1 hits, all repos are gone unless the project maintainers have migrated somewhere else.

Makes me wonder how many Python libs and projects will be affected? Passlib at https://pypi.org/project/passlib/ is one such lib. How many others are there?