fast/shrink-wrap/rect-shrink-wrap.html is flaky https://build.webkit.org/builders/Apple%20iOS%209%20Simulator%20Release%20WK2%20(Tests)/builds/6927 https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=fast%2Fshrink-wrap%2Frect-shrink-wrap.html
Also seems to have become flaky after https://trac.webkit.org/changeset/202532
Marked as flaky in http://trac.webkit.org/projects/webkit/changeset/202687