[Webkit-unassigned] [Bug 198232] New: Layout Test landed flaky [Mac iOS Release] imported/w3c/web-platform-tests/preload/link-header-preload-delay-onload.html is a flaky failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=198232

            Bug ID: 198232
           Summary: Layout Test landed flaky [Mac iOS Release]
                    imported/w3c/web-platform-tests/preload/link-header-pr
                    eload-delay-onload.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

The following layout test is flaky on Mac Release, and iOS Sim Release

imported/w3c/web-platform-tests/preload/link-header-preload-delay-onload.html

Probable cause:

Test was imported in https://trac.webkit.org/changeset/245475/webkit

Looks like it's a flaky failure on all Release testers.

Verified locally with:

run-webkit-tests imported/w3c/web-platform-tests/preload/link-header-preload-delay-onload.html --iter 500 -f

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=imported%2Fw3c%2Fweb-platform-tests%2Fpreload%2Flink-header-preload-delay-onload.html

Diff:

--- /Volumes/Data/slave/mojave-release-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/preload/link-header-preload-delay-onload-expected.txt
+++ /Volumes/Data/slave/mojave-release-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/preload/link-header-preload-delay-onload-actual.txt
@@ -1,4 +1,4 @@


-PASS Makes sure that Link headers preload resources and block window.onload after resource discovery 
+FAIL Makes sure that Link headers preload resources and block window.onload after resource discovery assert_true: expected true got false

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