A while ago I got very frustrated over the continuing problems passing the test suite due to heisenbugs. I decided to take my own advice and start filing bug reports with the TestSuite keyword:

https://issues.dlang.org/buglist.cgi?keywords=TestSuite&list_id=232170&order=resolution%20DESC%2Cbug_id&query_format=advanced

I'm happy to report that several people have stepped up to fix them, and things are noticeably better. It's saving developer time and test suite resources.

Thank you!