The test added in https://trac.webkit.org/changeset/221428/webkit http/wpt/cache-storage/cache-remove-twice.html is failing consistently on windows and has also failed on Sierra Wk2 Debug. https://build.webkit.org/results/Apple%20Sierra%20Debug%20WK2%20(Tests)/r221490%20(2818)/results.html https://build.webkit.org/builders/Apple%20Sierra%20Debug%20WK2%20(Tests)/builds/2818 diff: --- /Volumes/Data/slave/sierra-debug-tests-wk2/build/layout-test-results/http/wpt/cache-storage/cache-remove-twice-expected.txt +++ /Volumes/Data/slave/sierra-debug-tests-wk2/build/layout-test-results/http/wpt/cache-storage/cache-remove-twice-actual.txt @@ -1,6 +1,6 @@ PASS Cleaning existing caches -PASS Removing the same cache from two different documents +FAIL Removing the same cache from two different documents promise_test: Unhandled rejection with value: object "TypeError: Failed writing data to the file system" PASS Cleaning added caches