http://build.webkit.org/results/Apple%20Lion%20Release%20WK1%20(Tests)/r138698%20(7758)/results.html These two tests have been failing for ages: http://test-results.appspot.com/dashboards/flakiness_dashboard.html#group=%40ToT%20-%20webkit.org&tests=fast%2Fcanvas%2Fcanvas-composite-canvas.html%2Cfast%2Fcanvas%2Fcanvas-composite-image.html