[Webkit-unassigned] [Bug 193770] New: [ Mojave Release ] ProcessSwap.PageShowHide is a flakey API crash

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=193770

            Bug ID: 193770
           Summary: [ Mojave Release ] ProcessSwap.PageShowHide is a
                    flakey API crash
           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: tsavell at apple.com
                CC: lforschler at apple.com

ProcessSwap.PageShowHide is a flakey API crash on Mojave for Release builds. failure only happens every 25 runs or so, very infrequently. No repro case yet. 

Crashed

    TestWebKitAPI.ProcessSwap.PageShowHide
        _RegisterApplication(), FAILED TO establish the default connection to the WindowServer, _CGSDefaultConnection() is NULL.
        Received data during response processing, queuing it.
        _RegisterApplication(), FAILED TO establish the default connection to the WindowServer, _CGSDefaultConnection() is NULL.
        Received data during response processing, queuing it.
        2019-01-18 06:52:59.632 com.apple.WebKit.WebContent.Development[41741:67269154] Application does not have the 'com.apple.security.network.client' entitlement.

API Log:
https://build.webkit.org/builders/Apple%20Mojave%20Release%20WK2%20%28Tests%29/builds/1886/steps/run-api-tests/logs/stdio

run with failure:
https://build.webkit.org/builders/Apple%20Mojave%20Release%20WK2%20%28Tests%29/builds/2019

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