Comment 16 for bug 1829829

Regarding the blacklist, we started to work on it in https://github.com/systemd/systemd/issues/11195 (which was initially about merging PRs where bugs were caught by Travis CI but ignored because everybody was used to Ubuntu CI failing more often than not) and ended up with a list of test I suggested because I more or less knew what was flaky at the time and kept monitoring Ubuntu CI for a couple of days. As far as I can tell, it has been abandoned since then. If you're ready to keep the list up to date by visiting PRs where Ubuntu CI fails I'm of course all for it.

Other than that, right now the upstream test timeouts on i386, which has been on for just two days: https://github.com/systemd/systemd/pull/12901#issuecomment-506646998. I'm not sure how turning off some tests will help there (because generally I don't understand why it fails).

Plus, in https://github.com/systemd/systemd/pull/12861#issuecomment-506556062 the test is completely broken on Ubuntu CI and I have no idea why.