Bug: Intermittent browser/base/content/test/tabs/browser_tabSwitchPrintPreview.js | Uncaught exception - should be in print preview mode - timed out after 50 tries.
Status: RESOLVED
Priority: P5
Resolution: INCOMPLETE
Created: 2021-07-01 19:59:54+00:00
Resolved: 2023-07-07 12:01:20+00:00

**Filed by:** abutkovits [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=344205177&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/NT6W3wB3QT-tUtaRjUxRaw/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2021-07-01T19:33:55.679Z] 19:33:55     INFO - TEST-START | browser/base/content/test/tabs/browser_tabSwitchPrintPreview.js
[task 2021-07-01T19:33:55.727Z] 19:33:55     INFO - GECKO(1551) | [Child 2906: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f84d49af000 == 2 [pid = 2906] [id = 0] [url = about:blank]
[task 2021-07-01T19:33:55.728Z] 19:33:55     INFO - GECKO(1551) | [Child 2906: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f84d49b6800 == 1 [pid = 2906] [id = 1] [url = about:blank]
[task 2021-07-01T19:33:55.730Z] 19:33:55     INFO - GECKO(1551) | [Child 2906: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f84ce1c9400 == 0 [pid = 2906] [id = 2] [url = about:blank]
[task 2021-07-01T19:33:55.746Z] 19:33:55     INFO - GECKO(1551) | [Child 2903: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 8 (7fa7ef4643c0) [pid = 2903] [serial = 1] [outer = 0] [url = about:blank]
[task 2021-07-01T19:33:55.746Z] 19:33:55     INFO - GECKO(1551) | [Child 2903: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 7 (7fa7ef464900) [pid = 2903] [serial = 3] [outer = 0] [url = about:blank]
[task 2021-07-01T19:33:55.746Z] 19:33:55     INFO - GECKO(1551) | [Child 2903: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 6 (7fa7ef464740) [pid = 2903] [serial = 7] [outer = 0] [url = about:blank]
[task 2021-07-01T19:33:55.835Z] 19:33:55     INFO - GECKO(1551) | [Child 2906: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 8 (7f84eb1643c0) [pid = 2906] [serial = 1] [outer = 0] [url = about:blank]
[task 2021-07-01T19:33:55.836Z] 19:33:55     INFO - GECKO(1551) | [Child 2906: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 7 (7f84eb164740) [pid = 2906] [serial = 7] [outer = 0] [url = about:blank]
[task 2021-07-01T19:33:55.837Z] 19:33:55     INFO - GECKO(1551) | [Child 2906: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 6 (7f84eb164900) [pid = 2906] [serial = 3] [outer = 0] [url = about:blank]
[task 2021-07-01T19:33:55.841Z] 19:33:55     INFO - GECKO(1551) | [Child 2729: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 7f25eab42400 == 2 [pid = 2729] [id = 10]
[task 2021-07-01T19:33:55.842Z] 19:33:55     INFO - GECKO(1551) | [Child 2729: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 5 (7f2608f64740) [pid = 2729] [serial = 25] [outer = 0]
[task 2021-07-01T19:33:55.844Z] 19:33:55     INFO - GECKO(1551) | [Child 2729: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 6 (7f25eab49400) [pid = 2729] [serial = 26] [outer = 7f2608f64740]
[task 2021-07-01T19:33:55.866Z] 19:33:55     INFO - GECKO(1551) | [Child 2913: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f8f8ebacc00 == 0 [pid = 2913] [id = 0] [url = about:blank]
[task 2021-07-01T19:33:55.910Z] 19:33:55     INFO - GECKO(1551) | [Child 2913: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 2 (7f8fa53643c0) [pid = 2913] [serial = 1] [outer = 0] [url = about:blank]
[task 2021-07-01T19:33:55.953Z] 19:33:55     INFO - GECKO(1551) | [Child 2729: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 7 (7f25ebfebc00) [pid = 2729] [serial = 27] [outer = 7f2608f64740]
[task 2021-07-01T19:33:56.170Z] 19:33:56     INFO - GECKO(1551) | [Child 2825: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 7f829bfce000 == 3 [pid = 2825] [id = 9]
[task 2021-07-01T19:33:56.173Z] 19:33:56     INFO - GECKO(1551) | [Child 2825: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 6 (7f829c111200) [pid = 2825] [serial = 28] [outer = 0]
[task 2021-07-01T19:33:56.175Z] 19:33:56     INFO - GECKO(1551) | [Child 2825: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 7 (7f829bfd5800) [pid = 2825] [serial = 29] [outer = 7f829c111200]
[task 2021-07-01T19:33:56.209Z] 19:33:56     INFO - GECKO(1551) | [Parent 1551, Main Thread] WARNING: Caller should supply a printer name.: file /builds/worker/checkouts/gecko/widget/nsPrintSettingsService.cpp:864
[task 2021-07-01T19:33:56.213Z] 19:33:56     INFO - GECKO(1551) | [Parent 1551: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 7f150dac8400 == 25 [pid = 1551] [id = 93]
[task 2021-07-01T19:33:56.215Z] 19:33:56     INFO - GECKO(1551) | [Parent 1551: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 67 (7f150c5d3e40) [pid = 1551] [serial = 223] [outer = 0]
[task 2021-07-01T19:33:56.216Z] 19:33:56     INFO - GECKO(1551) | [Parent 1551: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 68 (7f150df0f400) [pid = 1551] [serial = 224] [outer = 7f150c5d3e40]
[task 2021-07-01T19:33:56.225Z] 19:33:56     INFO - GECKO(1551) | [Parent 1551, Main Thread] WARNING: NS_ENSURE_TRUE(uri) failed: file /builds/worker/checkouts/gecko/caps/BasePrincipal.cpp:1318
[task 2021-07-01T19:33:56.333Z] 19:33:56     INFO - GECKO(1551) | [Parent 1551, Main Thread] WARNING: NS_ENSURE_TRUE(rootFrame) failed: file /builds/worker/checkouts/gecko/dom/base/nsGlobalWindowOuter.cpp:4244
[task 2021-07-01T19:33:56.341Z] 19:33:56     INFO - GECKO(1551) | [Child 2825: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 8 (7f829d5c9400) [pid = 2825] [serial = 30] [outer = 7f829c111200]
[task 2021-07-01T19:33:56.489Z] 19:33:56     INFO - GECKO(1551) | [Parent 1551, Main Thread] WARNING: NS_ENSURE_TRUE(root) failed: file /builds/worker/checkouts/gecko/layout/base/nsDocumentViewer.cpp:2610
[task 2021-07-01T19:33:56.620Z] 19:33:56     INFO - GECKO(1551) | [Child 2729: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 7f25ebff5000 == 3 [pid = 2729] [id = 11]
[task 2021-07-01T19:33:56.622Z] 19:33:56     INFO - GECKO(1551) | [Child 2729: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 8 (7f25eb346200) [pid = 2729] [serial = 28] [outer = 0]
[task 2021-07-01T19:33:56.623Z] 19:33:56     INFO - GECKO(1551) | [Child 2729: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 9 (7f25ebff6400) [pid = 2729] [serial = 29] [outer = 7f25eb346200]
[task 2021-07-01T19:33:56.656Z] 19:33:56     INFO - GECKO(1551) | [Parent 1551, Main Thread] WARNING: Caller should supply a printer name.: file /builds/worker/checkouts/gecko/widget/nsPrintSettingsService.cpp:864
[task 2021-07-01T19:33:56.659Z] 19:33:56     INFO - GECKO(1551) | [Child 2729: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 10 (7f25ebff8c00) [pid = 2729] [serial = 30] [outer = 7f25eb346200]
[task 2021-07-01T19:33:56.671Z] 19:33:56     INFO - GECKO(1551) | JavaScript error: resource://gre/actors/PrintingChild.jsm, line 41: TypeError: can't access property "addEventListener", this.contentWindow is null
[task 2021-07-01T19:33:56.673Z] 19:33:56     INFO - GECKO(1551) | [Child 2729, Main Thread] WARNING: Caller should supply a printer name.: file /builds/worker/checkouts/gecko/widget/nsPrintSettingsService.cpp:864
[task 2021-07-01T19:33:56.676Z] 19:33:56     INFO - GECKO(1551) | [Child 2729, Main Thread] ###!!! ASSERTION: Bad readystate: 'mDocument->GetReadyStateEnum() == Document::READYSTATE_INTERACTIVE || (mDocument->GetReadyStateEnum() == Document::READYSTATE_UNINITIALIZED && NS_IsAboutBlank(mDocument->GetDocumentURI()))', file /builds/worker/checkouts/gecko/layout/base/nsDocumentViewer.cpp:1000
[task 2021-07-01T19:33:56.685Z] 19:33:56     INFO -  Initializing stack-fixing for the first stack frame, this may take a while...
[task 2021-07-01T19:34:07.580Z] 19:34:07     INFO - GECKO(1551) | #01: NS_DebugBreak [xpcom/base/nsDebugImpl.cpp:431]
[task 2021-07-01T19:34:07.582Z] 19:34:07     INFO - GECKO(1551) | #02: nsDocumentViewer::LoadComplete(nsresult) [layout/base/nsDocumentViewer.cpp:993]
[task 2021-07-01T19:34:07.583Z] 19:34:07     INFO - GECKO(1551) | #03: nsDocShell::EndPageLoad(nsIWebProgress*, nsIChannel*, nsresult) [docshell/base/nsDocShell.cpp:6359]
[task 2021-07-01T19:34:07.584Z] 19:34:07     INFO - GECKO(1551) | #04: nsDocShell::OnStateChange(nsIWebProgress*, nsIRequest*, unsigned int, nsresult) [docshell/base/nsDocShell.cpp:5750]
[task 2021-07-01T19:34:07.585Z] 19:34:07     INFO - GECKO(1551) | #05: {virtual override thunk({offset(-456)}, nsDocShell::OnStateChange(nsIWebProgress*, nsIRequest*, unsigned int, nsresult))} [/builds/worker/workspace/build/application/firefox/libxul.so + 0x8210064]
[task 2021-07-01T19:34:07.586Z] 19:34:07     INFO - GECKO(1551) | #06: nsDocLoader::DoFireOnStateChange(nsIWebProgress*, nsIRequest*, int&, nsresult) [uriloader/base/nsDocLoader.cpp:1362]
[task 2021-07-01T19:34:07.587Z] 19:34:07     INFO - GECKO(1551) | #07: nsDocLoader::doStopDocumentLoad(nsIRequest*, nsresult) [uriloader/base/nsDocLoader.cpp:967]
[task 2021-07-01T19:34:07.588Z] 19:34:07     INFO - GECKO(1551) | #08: nsDocLoader::DocLoaderIsEmpty(bool, mozilla::Maybe<nsresult> const&) [uriloader/base/nsDocLoader.cpp:789]
[task 2021-07-01T19:34:07.589Z] 19:34:07     INFO - GECKO(1551) | #09: nsDocLoader::OnStopRequest(nsIRequest*, nsresult) [uriloader/base/nsDocLoader.cpp:670]
[task 2021-07-01T19:34:07.590Z] 19:34:07     INFO - GECKO(1551) | #10: nsDocShell::OnStopRequest(nsIRequest*, nsresult) [docshell/base/nsDocShell.cpp:13515]
[task 2021-07-01T19:34:07.591Z] 19:34:07     INFO - GECKO(1551) | #11: mozilla::net::nsLoadGroup::NotifyRemovalObservers(nsIRequest*, nsresult) [netwerk/base/nsLoadGroup.cpp:614]
[task 2021-07-01T19:34:07.592Z] 19:34:07     INFO - GECKO(1551) | #12: mozilla::net::nsLoadGroup::RemoveRequest(nsIRequest*, nsISupports*, nsresult) [netwerk/base/nsLoadGroup.cpp:518]
[task 2021-07-01T19:34:07.593Z] 19:34:07     INFO - GECKO(1551) | #13: mozilla::dom::Document::SetScriptGlobalObject(nsIScriptGlobalObject*) [dom/base/Document.cpp:7370]
[task 2021-07-01T19:34:07.594Z] 19:34:07     INFO - GECKO(1551) | #14: mozilla::dom::Document::Destroy() [dom/base/Document.cpp:11115]
[task 2021-07-01T19:34:07.596Z] 19:34:07     INFO - GECKO(1551) | #15: nsDocumentViewer::SetDocumentInternal(mozilla::dom::Document*, bool) [layout/base/nsDocumentViewer.cpp:1856]
[task 2021-07-01T19:34:07.597Z] 19:34:07     INFO - GECKO(1551) | #16: mozilla::dom::Document::CreateStaticClone(nsIDocShell*, nsIContentViewer*, nsIPrintSettings*, bool*) [dom/base/Document.cpp:12928]
[task 2021-07-01T19:34:07.598Z] 19:34:07     INFO - GECKO(1551) | #17: nsGlobalWindowOuter::Print(nsIPrintSettings*, nsIWebProgressListener*, nsIDocShell*, nsGlobalWindowOuter::IsPreview, nsGlobalWindowOuter::IsForWindowDotPrint, std::function<void (mozilla::dom::PrintPreviewResultInfo const&)>&&, mozilla::ErrorResult&) [dom/base/nsGlobalWindowOuter.cpp:5382]
[task 2021-07-01T19:34:07.600Z] 19:34:07     INFO - GECKO(1551) | #18: nsGlobalWindowInner::PrintPreview(nsIPrintSettings*, nsIWebProgressListener*, nsIDocShell*, mozilla::ErrorResult&) [dom/base/nsGlobalWindowInner.cpp:3780]
[task 2021-07-01T19:34:07.601Z] 19:34:07     INFO - GECKO(1551) | #19: mozilla::dom::Window_Binding::printPreview(JSContext*, JS::Handle<JSObject*>, void*, JSJitMethodCallArgs const&) [s3:gecko-generated-sources:2b7e2b70f6a64a6cd894ba03488c9214b009f57de072ca7f30e8968bf8167cd5f5f501fd0d1ff5e818f100636c4d376ad414363e168273ade74e338f56e53552/dom/bindings/WindowBinding.cpp::3236]
[task 2021-07-01T19:34:07.602Z] 19:34:07     INFO - GECKO(1551) | #20: bool mozilla::dom::binding_detail::GenericMethod<mozilla::dom::binding_detail::MaybeCrossOriginObjectThisPolicy, mozilla::dom::binding_detail::ThrowExceptions>(JSContext*, unsigned int, JS::Value*) [dom/bindings/BindingUtils.cpp:3299]
[task 2021-07-01T19:34:07.604Z] 19:34:07     INFO - GECKO(1551) | #21: CallJSNative(JSContext*, bool (*)(JSContext*, unsigned int, JS::Value*), js::CallReason, JS::CallArgs const&) [js/src/vm/Interpreter.cpp:426]
[task 2021-07-01T19:34:07.606Z] 19:34:07     INFO - GECKO(1551) | #22: js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason) [js/src/vm/Interpreter.cpp:511]
[task 2021-07-01T19:34:07.607Z] 19:34:07     INFO - GECKO(1551) | #23: InternalCall(JSContext*, js::AnyInvokeArgs const&, js::CallReason) [js/src/vm/Interpreter.cpp:571]
[task 2021-07-01T19:34:07.608Z] 19:34:07     INFO - GECKO(1551) | #24: Interpret(JSContext*, js::RunState&) [js/src/vm/Interpreter.cpp:3226]
[task 2021-07-01T19:34:07.609Z] 19:34:07     INFO - GECKO(1551) | #25: js::RunScript(JSContext*, js::RunState&) [js/src/vm/Interpreter.cpp:395]
[task 2021-07-01T19:34:07.610Z] 19:34:07     INFO - GECKO(1551) | #26: js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason) [js/src/vm/Interpreter.cpp:543]
[task 2021-07-01T19:34:07.611Z] 19:34:07     INFO - GECKO(1551) | #27: InternalCall(JSContext*, js::AnyInvokeArgs const&, js::CallReason) [js/src/vm/Interpreter.cpp:571]
[task 2021-07-01T19:34:07.612Z] 19:34:07     INFO - GECKO(1551) | #28: js::Call(JSContext*, JS::Handle<JS::Value>, JS::Handle<JS::Value>, js::AnyInvokeArgs const&, JS::MutableHandle<JS::Value>, js::CallReason) [js/src/vm/Interpreter.cpp:588]
[task 2021-07-01T19:34:07.614Z] 19:34:07     INFO - GECKO(1551) | #29: JS_CallFunctionValue(JSContext*, JS::Handle<JSObject*>, JS::Handle<JS::Value>, JS::HandleValueArray const&, JS::MutableHandle<JS::Value>) [js/src/jsapi.cpp:2722]
[task 2021-07-01T19:34:07.615Z] 19:34:07     INFO - GECKO(1551) | #30: nsXPCWrappedJS::CallMethod(unsigned short, nsXPTMethodInfo const*, nsXPTCMiniVariant*) [js/xpconnect/src/XPCWrappedJSClass.cpp:993]
[task 2021-07-01T19:34:07.619Z] 19:34:07     INFO - GECKO(1551) | #31: PrepareAndDispatch [xpcom/reflect/xptcall/md/unix/xptcstubs_x86_64_linux.cpp:115]
[task 2021-07-01T19:34:07.620Z] 19:34:07     INFO - GECKO(1551) | #32: ??? [/builds/worker/workspace/build/application/firefox/libxul.so + 0x440e2d3]
[task 2021-07-01T19:34:07.621Z] 19:34:07     INFO - GECKO(1551) | #33: mozilla::RunnableTask::Run() [xpcom/threads/TaskController.cpp:503]
[task 2021-07-01T19:34:07.621Z] 19:34:07     INFO - GECKO(1551) | #34: mozilla::TaskController::DoExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&> const&) [xpcom/threads/TaskController.cpp:805]
[task 2021-07-01T19:34:07.624Z] 19:34:07     INFO - GECKO(1551) | #35: mozilla::TaskController::ExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&> const&) [xpcom/threads/TaskController.cpp:641]
[task 2021-07-01T19:34:07.624Z] 19:34:07     INFO - GECKO(1551) | #36: mozilla::TaskController::ProcessPendingMTTask(bool) [xpcom/threads/TaskController.cpp:425]
[task 2021-07-01T19:34:07.625Z] 19:34:07     INFO - GECKO(1551) | #37: mozilla::detail::RunnableFunction<mozilla::TaskController::InitializeInternal()::$_0>::Run() [xpcom/threads/nsThreadUtils.h:533]
[task 2021-07-01T19:34:07.626Z] 19:34:07     INFO - GECKO(1551) | #38: nsThread::ProcessNextEvent(bool, bool*) [xpcom/threads/nsThread.cpp:1156]
[task 2021-07-01T19:34:07.626Z] 19:34:07     INFO - GECKO(1551) | #39: NS_ProcessNextEvent(nsIThread*, bool) [xpcom/threads/nsThreadUtils.cpp:466]
[task 2021-07-01T19:34:07.632Z] 19:34:07     INFO - GECKO(1551) | #40: mozilla::ipc::MessagePump::Run(base::MessagePump::Delegate*) [ipc/glue/MessagePump.cpp:85]
[task 2021-07-01T19:34:07.632Z] 19:34:07     INFO - GECKO(1551) | #41: MessageLoop::RunInternal() [ipc/chromium/src/base/message_loop.cc:331]
[task 2021-07-01T19:34:07.635Z] 19:34:07     INFO - GECKO(1551) | #42: MessageLoop::Run() [ipc/chromium/src/base/message_loop.cc:307]
[task 2021-07-01T19:34:07.636Z] 19:34:07     INFO - GECKO(1551) | #43: nsBaseAppShell::Run() [widget/nsBaseAppShell.cpp:139]
[task 2021-07-01T19:34:07.636Z] 19:34:07     INFO - GECKO(1551) | #44: XRE_RunAppShell() [toolkit/xre/nsEmbedFunctions.cpp:910]
[task 2021-07-01T19:34:07.637Z] 19:34:07     INFO - GECKO(1551) | #45: mozilla::ipc::MessagePumpForChildProcess::Run(base::MessagePump::Delegate*) [ipc/glue/MessagePump.cpp:235]
[task 2021-07-01T19:34:07.638Z] 19:34:07     INFO - GECKO(1551) | #46: MessageLoop::RunInternal() [ipc/chromium/src/base/message_loop.cc:331]
[task 2021-07-01T19:34:07.638Z] 19:34:07     INFO - GECKO(1551) | #47: MessageLoop::Run() [ipc/chromium/src/base/message_loop.cc:307]
[task 2021-07-01T19:34:07.639Z] 19:34:07     INFO - GECKO(1551) | #48: XRE_InitChildProcess(int, char**, XREChildData const*) [toolkit/xre/nsEmbedFunctions.cpp:742]
[task 2021-07-01T19:34:07.707Z] 19:34:07     INFO - GECKO(1551) | #49: content_process_main(mozilla::Bootstrap*, int, char**) [ipc/contentproc/plugin-container.cpp:58]
[task 2021-07-01T19:34:07.708Z] 19:34:07     INFO - GECKO(1551) | #50: main [browser/app/nsBrowserApp.cpp:327]
[task 2021-07-01T19:34:07.714Z] 19:34:07     INFO - GECKO(1551) | #51: __libc_start_main [/lib/x86_64-linux-gnu/libc.so.6 + 0x21b97]
[task 2021-07-01T19:34:07.715Z] 19:34:07     INFO - GECKO(1551) | #52: ??? [/builds/worker/workspace/build/application/firefox/firefox-bin + 0x41599]
[task 2021-07-01T19:34:07.715Z] 19:34:07     INFO - GECKO(1551) | #53: ??? (???:???)
[task 2021-07-01T19:34:07.716Z] 19:34:07     INFO - GECKO(1551) | Hit MOZ_CRASH(This is unsafe! Fix the caller!) at /builds/worker/checkouts/gecko/dom/events/EventDispatcher.cpp:787
[task 2021-07-01T19:34:07.717Z] 19:34:07     INFO - GECKO(1551) | #01: mozilla::EventDispatcher::Dispatch(nsISupports*, nsPresContext*, mozilla::WidgetEvent*, mozilla::dom::Event*, nsEventStatus*, mozilla::EventDispatchingCallback*, nsTArray<mozilla::dom::EventTarget*>*) [dom/events/EventDispatcher.cpp:1077]
[task 2021-07-01T19:34:07.719Z] 19:34:07     INFO - GECKO(1551) | #02: nsDocumentViewer::LoadComplete(nsresult) [layout/base/nsDocumentViewer.cpp:1088]
[task 2021-07-01T19:34:07.720Z] 19:34:07     INFO - GECKO(1551) | #03: nsDocShell::EndPageLoad(nsIWebProgress*, nsIChannel*, nsresult) [docshell/base/nsDocShell.cpp:6359]
[task 2021-07-01T19:34:07.721Z] 19:34:07     INFO - GECKO(1551) | #04: nsDocShell::OnStateChange(nsIWebProgress*, nsIRequest*, unsigned int, nsresult) [docshell/base/nsDocShell.cpp:5750]
[task 2021-07-01T19:34:07.723Z] 19:34:07     INFO - GECKO(1551) | #05: {virtual override thunk({offset(-456)}, nsDocShell::OnStateChange(nsIWebProgress*, nsIRequest*, unsigned int, nsresult))} [/builds/worker/workspace/build/application/firefox/libxul.so + 0x8210064]
[task 2021-07-01T19:34:07.724Z] 19:34:07     INFO - GECKO(1551) | #06: nsDocLoader::DoFireOnStateChange(nsIWebProgress*, nsIRequest*, int&, nsresult) [uriloader/base/nsDocLoader.cpp:1362]
[task 2021-07-01T19:34:07.725Z] 19:34:07     INFO - GECKO(1551) | #07: nsDocLoader::doStopDocumentLoad(nsIRequest*, nsresult) [uriloader/base/nsDocLoader.cpp:967]
[task 2021-07-01T19:34:07.726Z] 19:34:07     INFO - GECKO(1551) | #08: nsDocLoader::DocLoaderIsEmpty(bool, mozilla::Maybe<nsresult> const&) [uriloader/base/nsDocLoader.cpp:789]
[task 2021-07-01T19:34:07.727Z] 19:34:07     INFO - GECKO(1551) | #09: nsDocLoader::OnStopRequest(nsIRequest*, nsresult) [uriloader/base/nsDocLoader.cpp:670]
[task 2021-07-01T19:34:07.728Z] 19:34:07     INFO - GECKO(1551) | #10: nsDocShell::OnStopRequest(nsIRequest*, nsresult) [docshell/base/nsDocShell.cpp:13515]
[task 2021-07-01T19:34:07.729Z] 19:34:07     INFO - GECKO(1551) | #11: mozilla::net::nsLoadGroup::NotifyRemovalObservers(nsIRequest*, nsresult) [netwerk/base/nsLoadGroup.cpp:614]
[task 2021-07-01T19:34:07.730Z] 19:34:07     INFO - GECKO(1551) | #12: mozilla::net::nsLoadGroup::RemoveRequest(nsIRequest*, nsISupports*, nsresult) [netwerk/base/nsLoadGroup.cpp:518]
[task 2021-07-01T19:34:07.731Z] 19:34:07     INFO - GECKO(1551) | #13: mozilla::dom::Document::SetScriptGlobalObject(nsIScriptGlobalObject*) [dom/base/Document.cpp:7370]
[task 2021-07-01T19:34:07.732Z] 19:34:07     INFO - GECKO(1551) | #14: mozilla::dom::Document::Destroy() [dom/base/Document.cpp:11115]
[task 2021-07-01T19:34:07.733Z] 19:34:07     INFO - GECKO(1551) | #15: nsDocumentViewer::SetDocumentInternal(mozilla::dom::Document*, bool) [layout/base/nsDocumentViewer.cpp:1856]
[task 2021-07-01T19:34:07.734Z] 19:34:07     INFO - GECKO(1551) | #16: mozilla::dom::Document::CreateStaticClone(nsIDocShell*, nsIContentViewer*, nsIPrintSettings*, bool*) [dom/base/Document.cpp:12928]
[task 2021-07-01T19:34:07.735Z] 19:34:07     INFO - GECKO(1551) | #17: nsGlobalWindowOuter::Print(nsIPrintSettings*, nsIWebProgressListener*, nsIDocShell*, nsGlobalWindowOuter::IsPreview, nsGlobalWindowOuter::IsForWindowDotPrint, std::function<void (mozilla::dom::PrintPreviewResultInfo const&)>&&, mozilla::ErrorResult&) [dom/base/nsGlobalWindowOuter.cpp:5382]
[task 2021-07-01T19:34:07.737Z] 19:34:07     INFO - GECKO(1551) | #18: nsGlobalWindowInner::PrintPreview(nsIPrintSettings*, nsIWebProgressListener*, nsIDocShell*, mozilla::ErrorResult&) [dom/base/nsGlobalWindowInner.cpp:3780]
[task 2021-07-01T19:34:07.740Z] 19:34:07     INFO - GECKO(1551) | #19: mozilla::dom::Window_Binding::printPreview(JSContext*, JS::Handle<JSObject*>, void*, JSJitMethodCallArgs const&) [s3:gecko-generated-sources:2b7e2b70f6a64a6cd894ba03488c9214b009f57de072ca7f30e8968bf8167cd5f5f501fd0d1ff5e818f100636c4d376ad414363e168273ade74e338f56e53552/dom/bindings/WindowBinding.cpp::3236]
[task 2021-07-01T19:34:07.741Z] 19:34:07     INFO - GECKO(1551) | #20: bool mozilla::dom::binding_detail::GenericMethod<mozilla::dom::binding_detail::MaybeCrossOriginObjectThisPolicy, mozilla::dom::binding_detail::ThrowExceptions>(JSContext*, unsigned int, JS::Value*) [dom/bindings/BindingUtils.cpp:3299]
[task 2021-07-01T19:34:07.742Z] 19:34:07     INFO - GECKO(1551) | #21: CallJSNative(JSContext*, bool (*)(JSContext*, unsigned int, JS::Value*), js::CallReason, JS::CallArgs const&) [js/src/vm/Interpreter.cpp:426]
[task 2021-07-01T19:34:07.744Z] 19:34:07     INFO - GECKO(1551) | #22: js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason) [js/src/vm/Interpreter.cpp:511]
[task 2021-07-01T19:34:07.745Z] 19:34:07     INFO - GECKO(1551) | #23: InternalCall(JSContext*, js::AnyInvokeArgs const&, js::CallReason) [js/src/vm/Interpreter.cpp:571]
[task 2021-07-01T19:34:07.746Z] 19:34:07     INFO - GECKO(1551) | #24: Interpret(JSContext*, js::RunState&) [js/src/vm/Interpreter.cpp:3226]
[task 2021-07-01T19:34:07.747Z] 19:34:07     INFO - GECKO(1551) | #25: js::RunScript(JSContext*, js::RunState&) [js/src/vm/Interpreter.cpp:395]
[task 2021-07-01T19:34:07.748Z] 19:34:07     INFO - GECKO(1551) | #26: js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason) [js/src/vm/Interpreter.cpp:543]
[task 2021-07-01T19:34:07.749Z] 19:34:07     INFO - GECKO(1551) | #27: InternalCall(JSContext*, js::AnyInvokeArgs const&, js::CallReason) [js/src/vm/Interpreter.cpp:571]
[task 2021-07-01T19:34:07.751Z] 19:34:07     INFO - GECKO(1551) | #28: js::Call(JSContext*, JS::Handle<JS::Value>, JS::Handle<JS::Value>, js::AnyInvokeArgs const&, JS::MutableHandle<JS::Value>, js::CallReason) [js/src/vm/Interpreter.cpp:588]
[task 2021-07-01T19:34:07.752Z] 19:34:07     INFO - GECKO(1551) | #29: JS_CallFunctionValue(JSContext*, JS::Handle<JSObject*>, JS::Handle<JS::Value>, JS::HandleValueArray const&, JS::MutableHandle<JS::Value>) [js/src/jsapi.cpp:2722]
[task 2021-07-01T19:34:07.754Z] 19:34:07     INFO - GECKO(1551) | #30: nsXPCWrappedJS::CallMethod(unsigned short, nsXPTMethodInfo const*, nsXPTCMiniVariant*) [js/xpconnect/src/XPCWrappedJSClass.cpp:993]
[task 2021-07-01T19:34:07.761Z] 19:34:07     INFO - GECKO(1551) | #31: PrepareAndDispatch [xpcom/reflect/xptcall/md/unix/xptcstubs_x86_64_linux.cpp:115]
[task 2021-07-01T19:34:07.762Z] 19:34:07     INFO - GECKO(1551) | #32: ??? [/builds/worker/workspace/build/application/firefox/libxul.so + 0x440e2d3]
[task 2021-07-01T19:34:07.763Z] 19:34:07     INFO - GECKO(1551) | #33: mozilla::RunnableTask::Run() [xpcom/threads/TaskController.cpp:503]
[task 2021-07-01T19:34:07.764Z] 19:34:07     INFO - GECKO(1551) | #34: mozilla::TaskController::DoExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&> const&) [xpcom/threads/TaskController.cpp:805]
[task 2021-07-01T19:34:07.765Z] 19:34:07     INFO - GECKO(1551) | #35: mozilla::TaskController::ExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&> const&) [xpcom/threads/TaskController.cpp:641]
[task 2021-07-01T19:34:07.766Z] 19:34:07     INFO - GECKO(1551) | #36: mozilla::TaskController::ProcessPendingMTTask(bool) [xpcom/threads/TaskController.cpp:425]
[task 2021-07-01T19:34:07.767Z] 19:34:07     INFO - GECKO(1551) | #37: mozilla::detail::RunnableFunction<mozilla::TaskController::InitializeInternal()::$_0>::Run() [xpcom/threads/nsThreadUtils.h:533]
[task 2021-07-01T19:34:07.767Z] 19:34:07     INFO - GECKO(1551) | #38: nsThread::ProcessNextEvent(bool, bool*) [xpcom/threads/nsThread.cpp:1156]
[task 2021-07-01T19:34:07.768Z] 19:34:07     INFO - GECKO(1551) | #39: NS_ProcessNextEvent(nsIThread*, bool) [xpcom/threads/nsThreadUtils.cpp:466]
[task 2021-07-01T19:34:07.769Z] 19:34:07     INFO - GECKO(1551) | #40: mozilla::ipc::MessagePump::Run(base::MessagePump::Delegate*) [ipc/glue/MessagePump.cpp:85]
[task 2021-07-01T19:34:07.770Z] 19:34:07     INFO - GECKO(1551) | #41: MessageLoop::RunInternal() [ipc/chromium/src/base/message_loop.cc:331]
[task 2021-07-01T19:34:07.771Z] 19:34:07     INFO - GECKO(1551) | #42: MessageLoop::Run() [ipc/chromium/src/base/message_loop.cc:307]
[task 2021-07-01T19:34:07.775Z] 19:34:07     INFO - GECKO(1551) | #43: nsBaseAppShell::Run() [widget/nsBaseAppShell.cpp:139]
[task 2021-07-01T19:34:07.776Z] 19:34:07     INFO - GECKO(1551) | #44: XRE_RunAppShell() [toolkit/xre/nsEmbedFunctions.cpp:910]
[task 2021-07-01T19:34:07.777Z] 19:34:07     INFO - GECKO(1551) | #45: mozilla::ipc::MessagePumpForChildProcess::Run(base::MessagePump::Delegate*) [ipc/glue/MessagePump.cpp:235]
[task 2021-07-01T19:34:07.778Z] 19:34:07     INFO - GECKO(1551) | #46: MessageLoop::RunInternal() [ipc/chromium/src/base/message_loop.cc:331]
[task 2021-07-01T19:34:07.779Z] 19:34:07     INFO - GECKO(1551) | #47: MessageLoop::Run() [ipc/chromium/src/base/message_loop.cc:307]
[task 2021-07-01T19:34:07.779Z] 19:34:07     INFO - GECKO(1551) | #48: XRE_InitChildProcess(int, char**, XREChildData const*) [toolkit/xre/nsEmbedFunctions.cpp:742]
[task 2021-07-01T19:34:07.780Z] 19:34:07     INFO - GECKO(1551) | #49: content_process_main(mozilla::Bootstrap*, int, char**) [ipc/contentproc/plugin-container.cpp:58]
[task 2021-07-01T19:34:07.781Z] 19:34:07     INFO - GECKO(1551) | #50: main [browser/app/nsBrowserApp.cpp:327]
[task 2021-07-01T19:34:07.782Z] 19:34:07     INFO - GECKO(1551) | #51: __libc_start_main [/lib/x86_64-linux-gnu/libc.so.6 + 0x21b97]
[task 2021-07-01T19:34:07.783Z] 19:34:07     INFO - GECKO(1551) | #52: ??? [/builds/worker/workspace/build/application/firefox/firefox-bin + 0x41599]
[task 2021-07-01T19:34:07.784Z] 19:34:07     INFO - GECKO(1551) | #53: ??? (???:???)
[task 2021-07-01T19:34:07.785Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551, IPC I/O Parent] WARNING: [1.1]: Ignoring message 'EVENT_MESSAGE' to unknown peer 27ABB90BE3405023.E2210D17247E4099: file /builds/worker/checkouts/gecko/ipc/glue/NodeController.cpp:289
[task 2021-07-01T19:34:07.789Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551, IPC I/O Parent] WARNING: [1.1]: Ignoring message 'EVENT_MESSAGE' to unknown peer 27ABB90BE3405023.E2210D17247E4099: file /builds/worker/checkouts/gecko/ipc/glue/NodeController.cpp:289
[task 2021-07-01T19:34:07.790Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551, IPC I/O Parent] WARNING: [1.1]: Ignoring message 'EVENT_MESSAGE' to unknown peer 27ABB90BE3405023.E2210D17247E4099: file /builds/worker/checkouts/gecko/ipc/glue/NodeController.cpp:289
[task 2021-07-01T19:34:07.790Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551, IPC I/O Parent] WARNING: [1.1]: Ignoring message 'EVENT_MESSAGE' to unknown peer 27ABB90BE3405023.E2210D17247E4099: file /builds/worker/checkouts/gecko/ipc/glue/NodeController.cpp:289
[task 2021-07-01T19:34:07.791Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551, IPC I/O Parent] WARNING: [1.1]: Ignoring message 'EVENT_MESSAGE' to unknown peer 27ABB90BE3405023.E2210D17247E4099: file /builds/worker/checkouts/gecko/ipc/glue/NodeController.cpp:289
[task 2021-07-01T19:34:07.794Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551, IPC I/O Parent] WARNING: [1.1]: Ignoring message 'EVENT_MESSAGE' to unknown peer 27ABB90BE3405023.E2210D17247E4099: file /builds/worker/checkouts/gecko/ipc/glue/NodeController.cpp:289
[task 2021-07-01T19:34:07.794Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551, IPC I/O Parent] WARNING: [1.1]: Ignoring message 'EVENT_MESSAGE' to unknown peer 27ABB90BE3405023.E2210D17247E4099: file /builds/worker/checkouts/gecko/ipc/glue/NodeController.cpp:289
[task 2021-07-01T19:34:07.795Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551, IPC I/O Parent] WARNING: [1.1]: Ignoring message 'EVENT_MESSAGE' to unknown peer 27ABB90BE3405023.E2210D17247E4099: file /builds/worker/checkouts/gecko/ipc/glue/NodeController.cpp:289
[task 2021-07-01T19:34:07.796Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551, IPC I/O Parent] WARNING: [1.1]: Ignoring message 'EVENT_MESSAGE' to unknown peer 27ABB90BE3405023.E2210D17247E4099: file /builds/worker/checkouts/gecko/ipc/glue/NodeController.cpp:289
[task 2021-07-01T19:34:07.799Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551, IPDL Background] WARNING: Not resolving response because actor is dead.: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:931
[task 2021-07-01T19:34:07.800Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551, IPDL Background] WARNING: IPDL resolver dropped without being called!: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:959
[task 2021-07-01T19:34:07.801Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551, IPDL Background] WARNING: Not resolving response because actor is dead.: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:931
[task 2021-07-01T19:34:07.802Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551, IPC I/O Parent] WARNING: [1.1]: Ignoring message 'EVENT_MESSAGE' to unknown peer 27ABB90BE3405023.E2210D17247E4099: file /builds/worker/checkouts/gecko/ipc/glue/NodeController.cpp:289
[task 2021-07-01T19:34:07.802Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551, IPC I/O Parent] WARNING: [1.1]: Ignoring message 'EVENT_MESSAGE' to unknown peer 27ABB90BE3405023.E2210D17247E4099: file /builds/worker/checkouts/gecko/ipc/glue/NodeController.cpp:289
[task 2021-07-01T19:34:07.803Z] 19:34:07     INFO - GECKO(1551) | ###!!! [Parent][RunMessage] Error: Channel error: cannot send/recv
[task 2021-07-01T19:34:07.804Z] 19:34:07     INFO - GECKO(1551) | ###!!! [Parent][RunMessage] Error: Channel error: cannot send/recv
[task 2021-07-01T19:34:07.805Z] 19:34:07     INFO - GECKO(1551) | ###!!! [Parent][RunMessage] Error: Channel error: cannot send/recv
[task 2021-07-01T19:34:07.805Z] 19:34:07     INFO - GECKO(1551) | ###!!! [Parent][RunMessage] Error: Channel error: cannot send/recv
[task 2021-07-01T19:34:07.806Z] 19:34:07     INFO - GECKO(1551) | ###!!! [Parent][RunMessage] Error: Channel error: cannot send/recv
[task 2021-07-01T19:34:07.807Z] 19:34:07     INFO - GECKO(1551) | ###!!! [Parent][RunMessage] Error: Channel error: cannot send/recv
[task 2021-07-01T19:34:07.807Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551, Main Thread] WARNING: IPC message discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:527
[task 2021-07-01T19:34:07.808Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551, Main Thread] WARNING: No build ID mismatch: file /builds/worker/checkouts/gecko/dom/base/nsFrameLoader.cpp:3779
[task 2021-07-01T19:34:07.809Z] 19:34:07     INFO - GECKO(1551) | ###!!! [Parent][MessageChannel] Error: (msgtype=0x390143,name=PContent::Msg_CommitBrowsingContextTransaction) Channel error: cannot send/recv
[task 2021-07-01T19:34:07.809Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 7f150bedb800 == 26 [pid = 1551] [id = 94]
[task 2021-07-01T19:34:07.810Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 69 (7f150c5d3c80) [pid = 1551] [serial = 225] [outer = 0]
[task 2021-07-01T19:34:07.811Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 70 (7f150d207000) [pid = 1551] [serial = 226] [outer = 7f150c5d3c80]
[task 2021-07-01T19:34:07.812Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551, Main Thread] WARNING: IPC message discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:527
[task 2021-07-01T19:34:07.813Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551, Main Thread] WARNING: No build ID mismatch: file /builds/worker/checkouts/gecko/dom/base/nsFrameLoader.cpp:3779
[task 2021-07-01T19:34:07.813Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551, Main Thread] WARNING: IPC message discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:527
[task 2021-07-01T19:34:07.814Z] 19:34:07     INFO - GECKO(1551) | [Child 2849: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 7f6f4ca39000 == 2 [pid = 2849] [id = 6]
[task 2021-07-01T19:34:07.815Z] 19:34:07     INFO - GECKO(1551) | [Child 2849: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 4 (7f6f6a664740) [pid = 2849] [serial = 19] [outer = 0]
[task 2021-07-01T19:34:07.816Z] 19:34:07     INFO - GECKO(1551) | [Child 2849: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 5 (7f6f4ca3b000) [pid = 2849] [serial = 20] [outer = 7f6f6a664740]
[task 2021-07-01T19:34:07.817Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551, Main Thread] WARNING: IPC message discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:527
[task 2021-07-01T19:34:07.817Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551, Main Thread] WARNING: IPC message discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:527
[task 2021-07-01T19:34:07.818Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551, Main Thread] WARNING: IPC message discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:527
[task 2021-07-01T19:34:07.819Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551, Main Thread] WARNING: IPC message discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:527
[task 2021-07-01T19:34:07.820Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551, Main Thread] WARNING: IPC message discarded: actor cannot send: file /builds/worker/workspace/obj-build/dist/include/mozilla/ipc/ProtocolUtils.h:312
[task 2021-07-01T19:34:07.821Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 7f154056b800 == 27 [pid = 1551] [id = 95]
[task 2021-07-01T19:34:07.821Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 71 (7f150dcac200) [pid = 1551] [serial = 227] [outer = 0]
[task 2021-07-01T19:34:07.822Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 72 (7f1542daf000) [pid = 1551] [serial = 228] [outer = 7f150dcac200]
[task 2021-07-01T19:34:07.823Z] 19:34:07     INFO - GECKO(1551) | [Child 2849: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 4 (7f6f4ca3a000) [pid = 2849] [serial = 17] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.824Z] 19:34:07     INFO - GECKO(1551) | [Child 2849: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f6f4ca38400 == 1 [pid = 2849] [id = 5] [url = about:blank]
[task 2021-07-01T19:34:07.825Z] 19:34:07     INFO - GECKO(1551) | [Child 1621: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f66008e8000 == 1 [pid = 1621] [id = 99] [url = about:blank]
[task 2021-07-01T19:34:07.825Z] 19:34:07     INFO - GECKO(1551) | [Child 1621: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 10 (7f66008eac00) [pid = 1621] [serial = 264] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.826Z] 19:34:07     INFO - GECKO(1551) | [Child 1621: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 9 (7f66008e2c00) [pid = 1621] [serial = 258] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.827Z] 19:34:07     INFO - GECKO(1551) | [Child 1621: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 8 (7f66008f0400) [pid = 1621] [serial = 267] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.828Z] 19:34:07     INFO - GECKO(1551) | [Child 1621: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 7 (7f66008ed800) [pid = 1621] [serial = 260] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.829Z] 19:34:07     INFO - GECKO(1551) | [Child 1621: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 6 (7f66008c6400) [pid = 1621] [serial = 263] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.830Z] 19:34:07     INFO - GECKO(1551) | [Child 1621: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 5 (7f66008cdc00) [pid = 1621] [serial = 266] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.830Z] 19:34:07     INFO - GECKO(1551) | [Child 1621: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 4 (7f66008e1c00) [pid = 1621] [serial = 261] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.831Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551, Main Thread] WARNING: NS_ENSURE_TRUE(rootFrame) failed: file /builds/worker/checkouts/gecko/dom/base/nsGlobalWindowOuter.cpp:4244
[task 2021-07-01T19:34:07.832Z] 19:34:07     INFO - GECKO(1551) | [Child 1621: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 3 (7f6600612740) [pid = 1621] [serial = 268] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.833Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 73 (7f1542db2800) [pid = 1551] [serial = 229] [outer = 7f150dcac200]
[task 2021-07-01T19:34:07.834Z] 19:34:07     INFO - GECKO(1551) | [Child 2883: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 5 (7f57823ce800) [pid = 2883] [serial = 8] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.835Z] 19:34:07     INFO - GECKO(1551) | [Child 2883: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 4 (7f57823cb400) [pid = 2883] [serial = 6] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.836Z] 19:34:07     INFO - GECKO(1551) | [Child 2883: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 3 (7f57823d2800) [pid = 2883] [serial = 9] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.836Z] 19:34:07     INFO - GECKO(1551) | [Child 2883: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 2 (7f5788cb1800) [pid = 2883] [serial = 4] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.837Z] 19:34:07     INFO - GECKO(1551) | [Child 2883: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 1 (7f5788caac00) [pid = 2883] [serial = 2] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.838Z] 19:34:07     INFO - GECKO(1551) | [Child 2883: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 0 (7f5788d13800) [pid = 2883] [serial = 5] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.839Z] 19:34:07     INFO - GECKO(1551) | [Child 2903: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 5 (7fa7d25c7c00) [pid = 2903] [serial = 6] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.840Z] 19:34:07     INFO - GECKO(1551) | [Child 2903: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 4 (7fa7d25cac00) [pid = 2903] [serial = 8] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.840Z] 19:34:07     INFO - GECKO(1551) | [Child 2903: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 3 (7fa7d25cec00) [pid = 2903] [serial = 9] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.841Z] 19:34:07     INFO - GECKO(1551) | [Child 2903: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 2 (7fa7d8db5c00) [pid = 2903] [serial = 4] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.842Z] 19:34:07     INFO - GECKO(1551) | [Child 2903: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 1 (7fa7d8db7800) [pid = 2903] [serial = 5] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.843Z] 19:34:07     INFO - GECKO(1551) | [Child 2903: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 0 (7fa7d8daf000) [pid = 2903] [serial = 2] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.844Z] 19:34:07     INFO - GECKO(1551) | [Child 2906: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 5 (7f84d49b9c00) [pid = 2906] [serial = 5] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.844Z] 19:34:07     INFO - GECKO(1551) | [Child 2906: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 4 (7f84ce1c7000) [pid = 2906] [serial = 6] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.845Z] 19:34:07     INFO - GECKO(1551) | [Child 2906: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 3 (7f84ce1ca400) [pid = 2906] [serial = 8] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.846Z] 19:34:07     INFO - GECKO(1551) | [Child 2906: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 2 (7f84d49b0000) [pid = 2906] [serial = 2] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.847Z] 19:34:07     INFO - GECKO(1551) | [Child 2906: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 1 (7f84ce1ce400) [pid = 2906] [serial = 9] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.848Z] 19:34:07     INFO - GECKO(1551) | [Child 2906: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 0 (7f84d49b7800) [pid = 2906] [serial = 4] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.848Z] 19:34:07     INFO - GECKO(1551) | [Child 2913: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 1 (7f8f8ebae400) [pid = 2913] [serial = 2] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.849Z] 19:34:07     INFO - GECKO(1551) | [Child 2913: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 0 (7f8f8ebb5400) [pid = 2913] [serial = 3] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.850Z] 19:34:07     INFO - GECKO(1551) | [Child 2849: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f6f4ca39000 == 0 [pid = 2849] [id = 6] [url = about:blank]
[task 2021-07-01T19:34:07.851Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f1542db4c00 == 26 [pid = 1551] [id = 92] [url = about:blank]
[task 2021-07-01T19:34:07.852Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f150d4c5400 == 25 [pid = 1551] [id = 76] [url = chrome://browser/content/browser.xhtml]
[task 2021-07-01T19:34:07.852Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f1546736c00 == 24 [pid = 1551] [id = 68] [url = chrome://browser/content/browser.xhtml]
[task 2021-07-01T19:34:07.853Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f150df07000 == 23 [pid = 1551] [id = 79] [url = chrome://browser/content/browser.xhtml]
[task 2021-07-01T19:34:07.854Z] 19:34:07     INFO - GECKO(1551) | [Child 1621: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 2 (7f66008e9000) [pid = 1621] [serial = 269] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.855Z] 19:34:07     INFO - GECKO(1551) | [Child 2849: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 3 (7f6f6a664740) [pid = 2849] [serial = 19] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.856Z] 19:34:07     INFO - GECKO(1551) | [Child 2849: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 2 (7f6f6a664580) [pid = 2849] [serial = 16] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.857Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 72 (7f150dcacc80) [pid = 1551] [serial = 211] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.857Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 71 (7f150dcac740) [pid = 1551] [serial = 213] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.858Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 70 (7f150dcad740) [pid = 1551] [serial = 215] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.859Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 69 (7f150dcac900) [pid = 1551] [serial = 209] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.860Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 68 (7f150dcac580) [pid = 1551] [serial = 207] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.861Z] 19:34:07     INFO - GECKO(1551) | [Parent 1551: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 67 (7f150e1bac80) [pid = 1551] [serial = 217] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.861Z] 19:34:07     INFO - GECKO(1551) | [Child 2825: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f829bf0f400 == 2 [pid = 2825] [id = 7] [url = about:blank]
[task 2021-07-01T19:34:07.862Z] 19:34:07     INFO - GECKO(1551) | [Child 2825: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f829bfcd000 == 1 [pid = 2825] [id = 8] [url = about:blank]
[task 2021-07-01T19:34:07.863Z] 19:34:07     INFO - GECKO(1551) | [Child 2825: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 7 (7f829c111040) [pid = 2825] [serial = 23] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.864Z] 19:34:07     INFO - GECKO(1551) | [Child 2825: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 6 (7f829c111ac0) [pid = 2825] [serial = 26] [outer = 0] [url = about:blank]
[task 2021-07-01T19:34:07.865Z] 19:34:07     INFO - TEST-INFO | started process screentopng
[task 2021-07-01T19:34:08.077Z] 19:34:08     INFO - TEST-INFO | screentopng: exit 0
[task 2021-07-01T19:34:08.078Z] 19:34:08     INFO - Buffered messages logged at 19:33:55
[task 2021-07-01T19:34:08.079Z] 19:34:08     INFO - Entering test bound 
[task 2021-07-01T19:34:08.079Z] 19:34:08     INFO - Buffered messages logged at 19:33:56
[task 2021-07-01T19:34:08.080Z] 19:34:08     INFO - Console message: [JavaScript Error: "The character encoding of the HTML document was not declared. The document will render with garbled text in some browser configurations if the document contains characters from outside the US-ASCII range. The character encoding of the page must be declared in the document or in the transfer protocol." {file: "data:text/html,Should I stay or should I go?" line: 0}]
[task 2021-07-01T19:34:08.080Z] 19:34:08     INFO - Global property added while loading chrome://global/content/printUtils.js: gFocusedElement
[task 2021-07-01T19:34:08.081Z] 19:34:08     INFO - Global property added while loading chrome://global/content/printUtils.js: gPendingPrintPreviews
[task 2021-07-01T19:34:08.081Z] 19:34:08     INFO - Global property added while loading chrome://global/content/printUtils.js: PRINT_TAB_MODAL
[task 2021-07-01T19:34:08.081Z] 19:34:08     INFO - Global property added while loading chrome://global/content/printUtils.js: PRINT_ALWAYS_SILENT
[task 2021-07-01T19:34:08.081Z] 19:34:08     INFO - Global property added while loading chrome://global/content/printUtils.js: PrintingParent
[task 2021-07-01T19:34:08.081Z] 19:34:08     INFO - Console message: [JavaScript Error: "The character encoding of the HTML document was not declared. The document will render with garbled text in some browser configurations if the document contains characters from outside the US-ASCII range. The character encoding of the page must be declared in the document or in the transfer protocol." {file: "data:text/html,I shouldn't be here!" line: 0}]
[task 2021-07-01T19:34:08.081Z] 19:34:08     INFO - Console message: [JavaScript Error: "TypeError: can't access property "addEventListener", this.contentWindow is null" {file: "resource://gre/actors/PrintingChild.jsm" line: 41}]
[task 2021-07-01T19:34:08.082Z] 19:34:08     INFO - actorCreated@resource://gre/actors/PrintingChild.jsm:41:5
[task 2021-07-01T19:34:08.082Z] 19:34:08     INFO - 
[task 2021-07-01T19:34:08.082Z] 19:34:08     INFO - Buffered messages logged at 19:33:57
[task 2021-07-01T19:34:08.082Z] 19:34:08     INFO - Console message: [JavaScript Error: "remote browser crashed while on data:text/html,Should I stay or should I go?
[task 2021-07-01T19:34:08.083Z] 19:34:08     INFO - " {file: "chrome://mochikit/content/mochitest-e10s-utils.js" line: 10}]
[task 2021-07-01T19:34:08.083Z] 19:34:08     INFO - e10s_init/<@chrome://mochikit/content/mochitest-e10s-utils.js:10:10
[task 2021-07-01T19:34:08.083Z] 19:34:08     INFO - 
[task 2021-07-01T19:34:08.085Z] 19:34:08     INFO - Console message: [JavaScript Error: "remote browser crashed while on about:printpreview
[task 2021-07-01T19:34:08.085Z] 19:34:08     INFO - " {file: "chrome://mochikit/content/mochitest-e10s-utils.js" line: 10}]
[task 2021-07-01T19:34:08.085Z] 19:34:08     INFO - e10s_init/<@chrome://mochikit/content/mochitest-e10s-utils.js:10:10
[task 2021-07-01T19:34:08.086Z] 19:34:08     INFO - 
[task 2021-07-01T19:34:08.086Z] 19:34:08     INFO - Buffered messages finished
[task 2021-07-01T19:34:08.087Z] 19:34:08     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabs/browser_tabSwitchPrintPreview.js | Uncaught exception - should be in print preview mode - timed out after 50 tries.
[task 2021-07-01T19:34:08.088Z] 19:34:08     INFO - Leaving test bound 
```