intermittent-failurekeyword are displayed in the Failure Summary section if they are a close match with the error message in the log:
rs=bustage-fixin your commit message to say why you landed it without review.
skip-ifnotation to the test manifest.
skip-if = truedisables the test on all platforms. Other options are available, check the tree for examples. If you disable a test there must be a bug filed about it. Use the magic words
[thunderbird-disabled-test]in the bug whiteboard and make sure appropriate developers are notified so the test can be fixed and re-enabled.