[Webkit-unassigned] [Bug 244736] New: REGRESSION (246057 at main): [ macOS wk1 ] imported/w3c/web-platform-tests/video-rvfc/request-video-frame-callback.html is a flaky failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=244736

            Bug ID: 244736
           Summary: REGRESSION (246057 at main): [ macOS wk1 ]
                    imported/w3c/web-platform-tests/video-rvfc/request-vid
                    eo-frame-callback.html 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/video-rvfc/request-video-frame-callback.html

This test was added at 243270 at main and consistently passed until 246057 at main, when it began to flaky fail.

REPRODUCTION STEPS
I can reproduce this on 254109 at main ToT.

Command: 
run-webkit-tests --debug --root 254109 at main-debug -1 --exit-after-n-failures 1 --exit-after-n-crashes-or-timeouts 1 --iterations 50 -f --no-retry imported/w3c/web-platform-tests/video-rvfc/request-video-frame-callback.html

Result: 
Unexpected flakiness: text-only failures (1)
  imported/w3c/web-platform-tests/video-rvfc/request-video-frame-callback.html [ Failure Pass ]

History:
https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fvideo-rvfc%2Frequest-video-frame-callback.html&platform=mac&flavor=wk1&limit=50000&recent=false

Diff:
--- /Volumes/Data/worker/Apple-Monterey-Debug-AppleSilicon-WK1-Tests/build/layout-test-results/imported/w3c/web-platform-tests/video-rvfc/request-video-frame-callback-expected.txt
+++ /Volumes/Data/worker/Apple-Monterey-Debug-AppleSilicon-WK1-Tests/build/layout-test-results/imported/w3c/web-platform-tests/video-rvfc/request-video-frame-callback-actual.txt
@@ -1,8 +1,10 @@

+
+Harness Error (TIMEOUT), message = null

 PASS Test we can register a video.rVFC callback.
 PASS Test video.rVFC callbacks run before window.rAF callbacks.
 PASS Test we can cancel a video.rVFC request.
 PASS Test invalid calls to the video.rVFC API.
-PASS Test video.rVFC does not stop when switching sources.
+TIMEOUT Test video.rVFC does not stop when switching sources. Test timed out

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