Created attachment 312817 [details] Diff imported/w3c/web-platform-tests/WebCryptoAPI/import_export/test_rsa_importKey.https.html has recently started to fail on all macOS Sierra builds. This started after another import revision r218181 https://trac.webkit.org/changeset/218181/webkit Another bug is associated with this test but involves a timeout on MacOS El Capitan https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=imported%2Fw3c%2Fweb-platform-tests%2FWebCryptoAPI%2Fimport_export%2Ftest_rsa_importKey.https.html https://build.webkit.org/results/Apple%20Sierra%20Release%20WK2%20(Tests)/r218202%20(2214)/results.html
Marked test as failing: https://trac.webkit.org/changeset/218215/webkit/
RSA-PSS is only enabled for High Sierra+.
Re-baselined test and reset test expectations: https://trac.webkit.org/changeset/218221/webkit