Bug 244014 – REGRESSION (252960@main, WPT resync): [ macOS Debug ] imported/w3c/web-platform-tests/html/semantics/document-metadata/the-style-element/style-load-after-mutate.html is a flaky failure

• Component: New Bugs
• Status: RESOLVED FIXED

[Karl Rackler]

Description:
imported/w3c/web-platform-tests/html/semantics/document-metadata/the-style-element/style-load-after-mutate.html

The test is a flaky failure after the WPT resync at 252960@main.

REPRODUCTION STEPS
I can reproduce this on 252960@main, but am unable to reproduce it earlier.

Command: 
run-webkit-tests --debug --exit-after-n-failures 1 --exit-after-n-crashes-or-timeouts 1 --iterations 50 -f --no-retry imported/w3c/web-platform-tests/html/semantics/document-metadata/the-style-element/style-load-after-mutate.html

Result: 
15 tests ran as expected, 3 didn't (32 didn't run):
Unexpected flakiness: text-only failures (1)
  imported/w3c/web-platform-tests/html/semantics/document-metadata/the-style-element/style-load-after-mutate.html [ Pass Failure ]

History:
https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fsemantics%2Fdocument-metadata%2Fthe-style-element%2Fstyle-load-after-mutate.html&limit=50000&platform=mac&style=debug&recent=false

Diff:
--- /Volumes/Data/worker/Apple-BigSur-Debug-AppleSilicon-WK1-Tests/build/layout-test-results/imported/w3c/web-platform-tests/html/semantics/document-metadata/the-style-element/style-load-after-mutate-expected.txt
+++ /Volumes/Data/worker/Apple-BigSur-Debug-AppleSilicon-WK1-Tests/build/layout-test-results/imported/w3c/web-platform-tests/html/semantics/document-metadata/the-style-element/style-load-after-mutate-actual.txt
@@ -1,3 +1,5 @@
 
-PASS The 'load' event on the style element should still fire after mutation
+Harness Error (TIMEOUT), message = null
 
+TIMEOUT The 'load' event on the style element should still fire after mutation Test timed out
+

[Radar WebKit Bug Importer]

<rdar://problem/98757197>

[Karl Rackler]

I have marked this test as a flaky failure while this issue is investigated.

[EWS]

Test gardening commit 253496@main (ee3946a1daad): <https://commits.webkit.org/253496@main>

Reviewed commits have been landed. Closing PR #3389 and removing active labels.

[Chris Dumez]

Pull request: https://github.com/WebKit/WebKit/pull/6265

[EWS]

Committed 256535@main (a5047de4052a): <https://commits.webkit.org/256535@main>

Reviewed commits have been landed. Closing PR #6265 and removing active labels.