[Webkit-unassigned] [Bug 196358] New: [ Mojave WK2 iOS Sim ] Layout Test http/wpt/cache-storage/quota-third-party.https.html is a flaky failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=196358

            Bug ID: 196358
           Summary: [ Mojave WK2 iOS Sim ] Layout Test
                    http/wpt/cache-storage/quota-third-party.https.html is
                    a flaky failure
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sroberts at apple.com
                CC: lforschler at apple.com

The following layout test is failing on Mojave WK2 and Debug. iOS Simulator Release and Debug

http/wpt/cache-storage/quota-third-party.https.html

Probable cause:

Test was added in https://trac.webkit.org/changeset/243247/webkit and started showing up on the dashboard shortly after that.

Is reproducible locally but will pass the first time, and fail subsequent iterations and pass on the retry. This happens even if I run 1 child process. Is far more flaky on iOS Simulator Release queue compared to other queues.

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=http%2Fwpt%2Fcache-storage%2Fquota-third-party.https.html

Diff: 

--- /Volumes/Data/slave/mojave-release-tests-wk2/build/layout-test-results/http/wpt/cache-storage/quota-third-party.https-expected.txt
+++ /Volumes/Data/slave/mojave-release-tests-wk2/build/layout-test-results/http/wpt/cache-storage/quota-third-party.https-actual.txt
@@ -1,6 +1,6 @@
-CONSOLE MESSAGE: Cache API operation failed: Quota exceeded
+CONSOLE MESSAGE: Cache API operation failed: Failed writing data to the file system


-PASS same origin iframe has regular quota 
-PASS cross origin iframe has reduced quota 
+FAIL same origin iframe has regular quota assert_equals: expected "PASS" but got "UNEXPECTED"
+FAIL cross origin iframe has reduced quota assert_equals: expected "FAIL" but got "PASS"

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