[Webkit-unassigned] [Bug 240348] New: [ iOS ] imported/w3c/web-platform-tests/webrtc/RTCPeerConnection-videoDetectorTest.html is a consistent failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=240348

            Bug ID: 240348
           Summary: [ iOS ]
                    imported/w3c/web-platform-tests/webrtc/RTCPeerConnecti
                    on-videoDetectorTest.html is a consistent 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/webrtc/RTCPeerConnection-videoDetectorTest.html

The first failure that I saw on the dashboard was 5/6/2022 at r293885, and the dashboard shows passing on r293882.  Between r293883 and r293885 probably introduced the consistent failure. 

REPRODUCTION STEPS
I can reproduce this on r293885, but repro against all earlier commits are also failures which is different from the dashboard history.

Command: 
run-webkit-tests --root 293885 --ios-simulator --exit-after-n-failures 1 --exit-after-n-crashes-or-timeouts 1 --iterations 50 --no-retry imported/w3c/web-platform-tests/webrtc/RTCPeerConnection-videoDetectorTest.html

Result:  
Regressions: Unexpected text-only failures (1)
  imported/w3c/web-platform-tests/webrtc/RTCPeerConnection-videoDetectorTest.html [ Failure ]

History:
https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fwebrtc%2FRTCPeerConnection-videoDetectorTest.html&limit=50000&platform=ios

Diff:
--- /Volumes/Data/worker/Apple-iOS-15-Simulator-Debug-WK2-Tests/build/layout-test-results/imported/w3c/web-platform-tests/webrtc/RTCPeerConnection-videoDetectorTest-expected.txt
+++ /Volumes/Data/worker/Apple-iOS-15-Simulator-Debug-WK2-Tests/build/layout-test-results/imported/w3c/web-platform-tests/webrtc/RTCPeerConnection-videoDetectorTest-actual.txt
@@ -1,3 +1,5 @@

-PASS Signal detector detects track change within reasonable time
+Harness Error (TIMEOUT), message = null

+TIMEOUT Signal detector detects track change within reasonable time Test timed out
+

stderr:
(webrtc_video_engine.cc:3482): Absent receive stream; ignoring clearing encoded frame sink for ssrc 0
(video_send_stream_impl.cc:187): ERROR: Initial encoder max bitrate = -1 which is <= 0!

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