I just noticed that #bitbucket did not archive my #mercurial repos in any visible way. I expected them to keep at least the repo discriptions up (which contained a link to the new git repo in my case). Instead, the repo links 404 and my account looks completely empty. Not the nicest way to handle such a change.
Old: https://web.archive.org/web/20161220165848/https://bitbucket.org/karlb/
New:
https://bitbucket.org/karlb/