[Webkit-unassigned] [Bug 207559] New: [ macOS iOS ] fast/parser/parser-yield-timing.html is a flaky failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=207559

            Bug ID: 207559
           Summary: [ macOS iOS ] fast/parser/parser-yield-timing.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: jacob_uphoff at apple.com

fast/parser/parser-yield-timing.html

This test has been flaky failing for all visible history.

Test is failing on macOS wk1 and iOS wk2 on debug.

I ran the test on macOS wk1 5000 times and I was able to reproduce the failure.

History: 

https://results.webkit.org/?suite=layout-tests&test=fast%2Fparser%2Fparser-yield-timing.html&limit=50000

Diff:

--- /Volumes/Data/slave/catalina-debug-tests-wk1/build/layout-test-results/fast/parser/parser-yield-timing-expected.txt
+++ /Volumes/Data/slave/catalina-debug-tests-wk1/build/layout-test-results/fast/parser/parser-yield-timing-actual.txt
@@ -5,7 +5,7 @@

 PASS new Date().getTime() - startTime is within 400 of 1000
 PASS new Date().getTime() - startTime is within 400 of 2000
-PASS new Date().getTime() - startTime is within 400 of 3000
+FAIL new Date().getTime() - startTime should be within 400 of 3000. Was 3423.
 PASS successfullyParsed is true

 TEST COMPLETE

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