I used to be able to log into the sunrise project's wiki to edit it using my Sunrise SVN username/password. I tried that same username/password pair today, and found that I was greeted with an "Internal Server Error" instead of being logged in. Some people speculate that trac's authentication was tied to SVN quite directly and that SVN has disappeared, so I'm not sure what should be done here. However, for the Sunrise project, at least Tommy has to be able to log in and edit the wiki pages.
This requires infra team action
Should work again.