fast/css/font-weight-1.html is failing on mac: http://test-results.appspot.com/dashboards/flakiness_dashboard.html#tests=fast%2Fcss%2Ffont-weight-1.html My best guess is http://trac.webkit.org/changeset/127092 based on the regression range (authors CC'ed), but I am not positive about blaming them. Update to test expectations forthcoming.
It looks like a patch near 127092 caused the test to stop failing for IMAGE+TEXT and just fail for IMAGE. I'm going to update the test expectation to reflect that.
Eseidel exonerated on IRC. Updating original bug with information and closing this: https://bugs.webkit.org/show_bug.cgi?id=50709