GitLab is used only for code review, issue tracking and project management. Canonical locations for source code are still https://gitweb.torproject.org/ https://git.torproject.org/ and git-rw.torproject.org.
And add #![deny(missing_docs)] to the top of the files to enforce it.
Attempted in af182d4ab51d6a1a70559bbdcd4ab842aa855684 and b6059297d7cb76f0e00e2098e38d6677d3033340 but forgot the exclamation point.