[Webkit-unassigned] [Bug 230116] New: [ MacOS ] imported/w3c/web-platform-tests/webrtc-extensions/transfer-datachannel.html is a flaky failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=230116

            Bug ID: 230116
           Summary: [ MacOS ]
                    imported/w3c/web-platform-tests/webrtc-extensions/tran
                    sfer-datachannel.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: ayumi_kojima at apple.com

imported/w3c/web-platform-tests/webrtc-extensions/transfer-datachannel.html

Is flaky failing on BigSur wk1 and Catalina wk1 & wk2.

It has been flaky on Catalina, but it started showing up on BigSur and failing more constantly at around r282006.

The flaky failure is seen on EWS as well.

The diff from more recent failure (BigSur) seems to be different from an older one (Catalina).

Diff (BigSur https://build.webkit.org/#/builders/101/builds/4521):

--- /Volumes/Data/worker/bigsur-release-applesilicon-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/webrtc-extensions/transfer-datachannel-expected.txt
+++ /Volumes/Data/worker/bigsur-release-applesilicon-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/webrtc-extensions/transfer-datachannel-actual.txt
@@ -1,6 +1,8 @@
+
+Harness Error (TIMEOUT), message = null

 PASS offerer data channel in workers
-PASS answerer data channel in workers
-PASS data channel close event in worker
-PASS Failing to transfer a data channel
+TIMEOUT answerer data channel in workers Test timed out
+NOTRUN data channel close event in worker
+NOTRUN Failing to transfer a data channel


Diff (Catalina https://build.webkit.org/#/builders/36/builds/16038): 

--- /Volumes/Data/worker/catalina-debug-tests-wk2/build/layout-test-results/imported/w3c/web-platform-tests/webrtc-extensions/transfer-datachannel-expected.txt
+++ /Volumes/Data/worker/catalina-debug-tests-wk2/build/layout-test-results/imported/w3c/web-platform-tests/webrtc-extensions/transfer-datachannel-actual.txt
@@ -1,5 +1,5 @@

-PASS offerer data channel in workers
+FAIL offerer data channel in workers assert_equals: expected "OK" but got "opened"
 PASS answerer data channel in workers
 PASS data channel close event in worker
 PASS Failing to transfer a data channel

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