Since the OS X bots were updated, the <audio> and <video> elements no longer reports when a media fails to load on WebKit2. The following test broke as a result: -media/W3C/audio/error/error_onerror_called_on_bogus_source.html -media/W3C/video/error/error_onerror_called_on_bogus_source.html -media/broken-video.html -media/event-attributes.html <rdar://problem/14197625>
Committed r151716: <http://trac.webkit.org/changeset/151716>
media/event-attributes.html timed out on Mac WK1 Release bot today, not sure if it's the same issue though.