imported/w3c/web-platform-tests/css/css-contain/content-visibility/content-visibility-050.html Is a flaky crash specifically on iOS EWS queues. HISTORY: https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-contain%2Fcontent-visibility%2Fcontent-visibility-050.html Crash-Log: Crashed Thread: 0 Dispatch queue: com.apple.main-thread Exception Type: EXC_BREAKPOINT (SIGTRAP) Exception Codes: 0x0000000000000002, 0x0000000000000000 Exception Note: EXC_CORPSE_NOTIFY Termination Signal: Trace/BPT trap: 5 Termination Reason: Namespace SIGNAL, Code 0x5 Terminating Process: exc handler [15983] Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 org.webkit.WebKitTestRunnerApp 0x0000000106ce24d3 WTFCrashWithInfo(int, char const*, char const*, int) + 19 1 org.webkit.WebKitTestRunnerApp 0x0000000106d15730 WTR::TestInvocation::runUISideScriptImmediately(OpaqueWKError const*, void*) + 98 2 com.apple.WebKit 0x000000010dcc7b2e WebKit::GenericCallback<>::performCallbackWithReturnValue() + 40 3 com.apple.WebKit 0x000000010dcc3aa0 WebKit::RemoteLayerTreeDrawingAreaProxy::commitLayerTree(WebKit::RemoteLayerTreeTransaction const&, WebKit::RemoteScrollingCoordinatorTransaction const&) + 594 4 com.apple.WebKit 0x000000010d9cbd03 WebKit::RemoteLayerTreeDrawingAreaProxy::didReceiveMessage(IPC::Connection&, IPC::Decoder&) + 273 5 com.apple.WebKit 0x000000010dc6445c IPC::MessageReceiverMap::dispatchMessage(IPC::Connection&, IPC::Decoder&) + 224 6 com.apple.WebKit 0x000000010de3ea16 WebKit::WebProcessProxy::didReceiveMessage(IPC::Connection&, IPC::Decoder&) + 24 7 com.apple.WebKit 0x000000010dc5dd5a IPC::Connection::dispatchMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >) + 238 8 com.apple.WebKit 0x000000010dc5d46f IPC::Connection::dispatchIncomingMessages() + 377 9 com.apple.JavaScriptCore 0x00000001095aef4f WTF::RunLoop::performWork() + 431 10 com.apple.JavaScriptCore 0x00000001095af822 WTF::RunLoop::performWork(void*) + 34 11 com.apple.CoreFoundation 0x00007fff20369e25 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17 12 com.apple.CoreFoundation 0x00007fff20369d1d __CFRunLoopDoSource0 + 180 13 com.apple.CoreFoundation 0x00007fff203691f2 __CFRunLoopDoSources0 + 242 14 com.apple.CoreFoundation 0x00007fff20363951 __CFRunLoopRun + 875 15 com.apple.CoreFoundation 0x00007fff20363103 CFRunLoopRunSpecific + 567 16 com.apple.Foundation 0x00007fff2081941c -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 213 17 org.webkit.WebKitTestRunnerApp 0x0000000106d07d7e WTR::TestController::platformRunUntil(bool&, WTF::Seconds) + 184 18 org.webkit.WebKitTestRunnerApp 0x0000000106d1132f WTR::TestInvocation::invoke() + 325 19 org.webkit.WebKitTestRunnerApp 0x0000000106cf8788 WTR::TestController::runTest(char const*) + 330 20 org.webkit.WebKitTestRunnerApp 0x0000000106cf8a1a WTR::TestController::runTestingServerLoop() + 128 21 org.webkit.WebKitTestRunnerApp 0x0000000106cf3931 WTR::TestController::TestController(int, char const**) + 479 22 org.webkit.WebKitTestRunnerApp 0x0000000106ce25a8 -[WebKitTestRunnerApp _runTestController] + 40 23 com.apple.Foundation 0x00007fff2084258c __NSThreadPerformPerform + 207 24 com.apple.CoreFoundation 0x00007fff20369e25 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17 25 com.apple.CoreFoundation 0x00007fff20369d1d __CFRunLoopDoSource0 + 180 26 com.apple.CoreFoundation 0x00007fff20369254 __CFRunLoopDoSources0 + 340 27 com.apple.CoreFoundation 0x00007fff20363951 __CFRunLoopRun + 875 28 com.apple.CoreFoundation 0x00007fff20363103 CFRunLoopRunSpecific + 567 29 com.apple.GraphicsServices 0x00007fff2c851cd3 GSEventRunModal + 139 30 com.apple.UIKitCore 0x00007fff24ffbe63 -[UIApplication _run] + 928 31 com.apple.UIKitCore 0x00007fff25000a53 UIApplicationMain + 101 32 org.webkit.WebKitTestRunnerApp 0x0000000106ce26a6 main + 65 33 dyld_sim 0x0000000106e03e1e start_sim + 10 34 ??? 0x0000000000000001 0 + 1 35 ??? 0x0000000000000002 0 + 2 Crash-log-url: https://ews-build.s3-us-west-2.amazonaws.com/iOS-15-Simulator-WK2-Tests-EWS/455305-11157-rerun/imported/w3c/web-platform-tests/css/css-contain/content-visibility/content-visibility-050-crash-log.txt