[Webkit-unassigned] [Bug 176486] New: Layout test imported/w3c/web-platform-tests/background-fetch/interfaces-worker.https.html is flaky.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=176486

            Bug ID: 176486
           Summary: Layout test
                    imported/w3c/web-platform-tests/background-fetch/inter
                    faces-worker.https.html is flaky.
           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: jlewis3 at apple.com
                CC: ryanhaddad at apple.com, youennf at gmail.com

imported/w3c/web-platform-tests/background-fetch/interfaces-worker.https.html is a flaky failure on El Capitan WK2 Debug according to the flakiness dashboard.

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=imported%2Fw3c%2Fweb-platform-tests%2Fbackground-fetch%2Finterfaces-worker.https.html

https://build.webkit.org/results/Apple%20El%20Capitan%20Debug%20WK2%20(Tests)/r221703%20(2933)/results.html
https://build.webkit.org/builders/Apple%20El%20Capitan%20Debug%20WK2%20(Tests)/builds/2933

diff:

--- /Volumes/Data/slave/elcapitan-debug-tests-wk2/build/layout-test-results/imported/w3c/web-platform-tests/background-fetch/interfaces-worker.https-expected.txt
+++ /Volumes/Data/slave/elcapitan-debug-tests-wk2/build/layout-test-results/imported/w3c/web-platform-tests/background-fetch/interfaces-worker.https-actual.txt
@@ -1,3 +1,4 @@
+CONSOLE MESSAGE: line 153: TypeError: undefined is not an object (evaluating 'registration.unregister')
 idlharness test

 This test validates the WebIDL included in the Background Fetch API (Service Workers).

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