See e.g. https://jenkins.mono-project.com/job/test-mono-acceptancetests/514/testReport/
All of the CoreMangLib failures are BCL issues. Baselined them with https://github.com/mono/mono/pull/4325
These are mostly runtime bugs
When looking at https://jenkins.mono-project.com/job/test-mono-acceptancetests/764/testReport/ I can't see any failed test. Can we close this bug or have these tests been disabled?
The tests were disabled with https://github.com/mono/mono/pull/4325 so we have a chance of catching new issues. I think they should still be investigated some day.