[Webkit-unassigned] [Bug 245329] New: EWS false positive when crashes didn't reproduce on run-layout-tests-without-change

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=245329

            Bug ID: 245329
           Summary: EWS false positive when crashes didn't reproduce on
                    run-layout-tests-without-change
           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: ap at webkit.org
                CC: aakash_jain at apple.com, clopez at igalia.com,
                    jbedard at apple.com

https://github.com/WebKit/WebKit/pull/4441 got wrongly marked as failing. Buidbot link: https://ews-build.webkit.org/#/builders/73/builds/14733

These tests crashed on first try:

inspector/debugger/symbolic-breakpoint-intrinsic-js-regex-case-insensitive.html
inspector/debugger/symbolic-breakpoint-intrinsic-js-regex-case-sensitive.html

Retry:

inspector/debugger/symbolic-breakpoint-intrinsic-js-regex-case-sensitive.html

But nothing crashed on run-layout-tests-without-change, which only ran these two tests.

Was this just an unfortunate coincidence due to flakiness? Or did crashing depend on having run preceding tests? I'm feeling uneasy about only running tests that failed in run-layout-tests-without-change, we seem to be getting a lot of false positives lately.

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