[Webkit-unassigned] [Bug 207225] New: [ macOS iOS ] imported/w3c/web-platform-tests/service-workers/service-worker/extendable-event-waituntil.https.html is flaky failing

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=207225

            Bug ID: 207225
           Summary: [ macOS iOS ]
                    imported/w3c/web-platform-tests/service-workers/servic
                    e-worker/extendable-event-waituntil.https.html is
                    flaky failing
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Service Workers
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jacob_uphoff at apple.com

imported/w3c/web-platform-tests/service-workers/service-worker/extendable-event-waituntil.https.html

This test has been a flaky failure for all visible history on debug and release 

I was able to reproduce the failure simply by running the test in iterations (ran 5000, got 50 failures)

History:

https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fservice-workers%2Fservice-worker%2Fextendable-event-waituntil.https.html&limit=50000

Diff:

--- /Volumes/Data/slave/catalina-debug-tests-wk2/build/layout-test-results/imported/w3c/web-platform-tests/service-workers/service-worker/extendable-event-waituntil.https-expected.txt
+++ /Volumes/Data/slave/catalina-debug-tests-wk2/build/layout-test-results/imported/w3c/web-platform-tests/service-workers/service-worker/extendable-event-waituntil.https-actual.txt
@@ -1,8 +1,10 @@
+
+Harness Error (TIMEOUT), message = null

 PASS Test install event waitUntil fulfilled 
 PASS Test ExtendableEvent multiple waitUntil fulfilled. 
 PASS Test ExtendableEvent waitUntil reject precedence. 
-PASS Test activate event waitUntil fulfilled 
-PASS Test install event waitUntil rejected 
-PASS Test activate event waitUntil rejected. 
+TIMEOUT Test activate event waitUntil fulfilled Test timed out
+NOTRUN Test install event waitUntil rejected 
+NOTRUN Test activate event waitUntil rejected.

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