Strangely enough the build system changes caused a few extra failing layout tests. I suspect that running them individually is going to make them pass, so something odd happened. Anyway, we have this bug to track the issue for Monday.
They aren't flakey fails, NRWT always rerun failing tests and they failed for second time too.
Tests skipped in http://trac.webkit.org/changeset/99296 and http://trac.webkit.org/changeset/99304
(In reply to comment #1) > They aren't flakey fails, NRWT always rerun failing tests and they failed for second time too. Does NRWT run them "singly" or in a batch?
Fixed in r99418 and r99422