imported/w3c/web-platform-tests/service-workers/service-worker/fetch-canvas-tainting-image-cache.https.html Flaky since r244094 or earlier https://build.webkit.org/results/GTK%20Linux%2064-bit%20Release%20(Tests)/r245061%20(10418)/imported/w3c/web-platform-tests/service-workers/service-worker/fetch-canvas-tainting-image-cache.https-pretty-diff.html