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.
they could be useful to understand which relays fail to be measured and why, to solve legacy/trac#16559 (moved)
So far we thought to add:
Edit: to solve legacy/trac#16559 (moved)