[Webkit-unassigned] [Bug 244014] New: REGRESSION (252960 at main): [ macOS Debug ] imported/w3c/web-platform-tests/html/semantics/document-metadata/the-style-element/style-load-after-mutate.html is a flaky failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=244014

            Bug ID: 244014
           Summary: REGRESSION (252960 at main): [ macOS Debug ]
                    imported/w3c/web-platform-tests/html/semantics/documen
                    t-metadata/the-style-element/style-load-after-mutate.h
                    tml is a flaky failure
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: rackler at apple.com

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 at main.

REPRODUCTION STEPS
I can reproduce this on 252960 at 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
+

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.webkit.org/pipermail/webkit-unassigned/attachments/20220817/26e1040e/attachment-0001.htm>