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Test 'SourceUrlRecorderWebContentsObserverBrowserTest.Basic' completed with the following status(es): 'CRASH' Test 'SourceUrlRecorderWebContentsObserverBrowserTest.Basic' had the following logs when run: ================================================================================ [ RUN ] SourceUrlRecorderWebContentsObserverBrowserTest.Basic DevTools listening on ws://127.0.0.1:43823/devtools/browser/3837847a-dc1c-4ec7-80b7-4570d8f0cd30 [32505:32590:0525/074415.675321:FATAL:background_tracing_manager_impl.cc(215)] Check failed: ::content::BrowserThread::CurrentlyOn(BrowserThread::UI). Must be called on Chrome_UIThread; actually called on Chrome_IOThread. #0 0x5654f4260d8b in backtrace /b/swarming/w/ir/k/src/third_party/llvm/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:4090:13 #1 0x5654fe18ee59 in base::debug::CollectStackTrace(void**, unsigned long) ./../../base/debug/stack_trace_posix.cc:834:39 #2 0x5654fdeabc53 in StackTrace ./../../base/debug/stack_trace.cc:206:12 #3 0x5654fdeabc53 in base::debug::StackTrace::StackTrace() ./../../base/debug/stack_trace.cc:203:0 #4 0x5654fdeff86b in logging::LogMessage::~LogMessage() ./../../base/logging.cc:619:29 #5 0x5654f944b873 in content::BackgroundTracingManagerImpl::AddTracingAgent(tracing::mojom::TracingAgent*) ./../../content/browser/tracing/background_tracing_manager_impl.cc:215:3 #6 0x5654f782906a in tracing::mojom::TracingAgentClientStubDispatch::Accept(tracing::mojom::TracingAgentClient*, mojo::Message*) ./gen/components/tracing/common/tracing_agent.mojom.cc:188:13 #7 0x5654ff34e68d in mojo::InterfaceEndpointClient::HandleValidatedMessage(mojo::Message*) ./../../mojo/public/cpp/bindings/lib/interface_endpoint_client.cc:437:32 #8 0x5654ff358369 in mojo::FilterChain::Accept(mojo::Message*) ./../../mojo/public/cpp/bindings/lib/filter_chain.cc:40:17 #9 0x5654ff3529ec in mojo::InterfaceEndpointClient::HandleIncomingMessage(mojo::Message*) ./../../mojo/public/cpp/bindings/lib/interface_endpoint_client.cc:320:19 #10 0x5654ff36c38c in mojo::internal::MultiplexRouter::ProcessIncomingMessage(mojo::internal::MultiplexRouter::MessageWrapper*, mojo::internal::MultiplexRouter::ClientCallBehavior, base::SequencedTaskRunner*) ./../../mojo/public/cpp/bindings/lib/multiplex_router.cc:873:42 #11 0x5654ff36a1fd in mojo::internal::MultiplexRouter::Accept(mojo::Message*) ./../../mojo/public/cpp/bindings/lib/multiplex_router.cc:594:38 #12 0x5654ff358369 in mojo::FilterChain::Accept(mojo::Message*) ./../../mojo/public/cpp/bindings/lib/filter_chain.cc:40:17 #13 0x5654ff33f32e in mojo::Connector::DispatchMessage(mojo::Message) ./../../mojo/public/cpp/bindings/lib/connector.cc:525:49 #14 0x5654ff341c3c in mojo::Connector::ReadAllAvailableMessages() ./../../mojo/public/cpp/bindings/lib/connector.cc:600:12 #15 0x5654ff34108e in mojo::Connector::OnHandleReadyInternal(unsigned int) ./../../mojo/public/cpp/bindings/lib/connector.cc:435:3 #16 0x5654f6732646 in Run ./../../base/callback.h:136:12 #17 0x5654f6732646 in mojo::SimpleWatcher::DiscardReadyState(base::RepeatingCallback<void (unsigned int)> const&, unsigned int, mojo::HandleSignalsState const&) ./../../mojo/public/cpp/system/simple_watcher.h:194:0 #18 0x5654ff3c7a62 in Run ./../../base/callback.h:136:12 #19 0x5654ff3c7a62 in mojo::SimpleWatcher::OnHandleReady(int, unsigned int, mojo::HandleSignalsState const&) ./../../mojo/public/cpp/system/simple_watcher.cc:293:0 #20 0x5654ff3c8a59 in mojo::SimpleWatcher::Context::Notify(unsigned int, MojoHandleSignalsState, unsigned int) ./../../mojo/public/cpp/system/simple_watcher.cc:118:22 #21 0x5654ff3c46bb in mojo::SimpleWatcher::Context::CallNotify(MojoTrapEvent const*) ./../../mojo/public/cpp/system/simple_watcher.cc:57:14 #22 0x5654f71d2d73 in mojo::core::WatcherDispatcher::InvokeWatchCallback(unsigned long, unsigned int, mojo::core::HandleSignalsState const&, unsigned int) ./../../mojo/core/watcher_dispatcher.cc:94:3 #23 0x5654f71d17ff in mojo::core::Watch::InvokeCallback(unsigned int, mojo::core::HandleSignalsState const&, unsigned int) ./../../mojo/core/watch.cc:78:13 #24 0x5654f71c12ff in mojo::core::RequestContext::~RequestContext() ./../../mojo/core/request_context.cc:72:20 #25 0x5654f71946fe in mojo::core::NodeChannel::OnChannelMessage(void const*, unsigned long, std::__1::vector<mojo::PlatformHandle, std::__1::allocator<mojo::PlatformHandle> >) ./../../mojo/core/node_channel.cc:700:1 #26 0x5654f71590d4 in mojo::core::Channel::TryDispatchMessage(base::span<char const, 18446744073709551615ul>, unsigned long*) ./../../mojo/core/channel.cc:791:16 #27 0x5654f71586f4 in mojo::core::Channel::OnReadComplete(unsigned long, unsigned long*) ./../../mojo/core/channel.cc:689:9 #28 0x5654f71e4a38 in mojo::core::(anonymous namespace)::ChannelPosix::OnFileCanReadWithoutBlocking(int) ./../../mojo/core/channel_posix.cc:472:14 #29 0x5654fe1eb045 in base::MessagePumpLibevent::OnLibeventNotification(int, short, void*) ./../../base/message_loop/message_pump_libevent.cc:0:13 #30 0x5654feb96a29 in event_process_active ./../../base/third_party/libevent/event.c:381:4 #31 0x5654feb96a29 in event_base_loop ./../../base/third_party/libevent/event.c:521:0 #32 0x5654fe1eb8f1 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) ./../../base/message_loop/message_pump_libevent.cc:213:5 #33 0x5654fe060086 in base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::Run(bool, base::TimeDelta) ./../../base/task/sequence_manager/thread_controller_with_message_pump_impl.cc:466:12 #34 0x5654fdfa1e12 in base::RunLoop::RunWithTimeout(base::TimeDelta) ./../../base/run_loop.cc:161:14 #35 0x5654fe0e6385 in base::Thread::Run(base::RunLoop*) ./../../base/threading/thread.cc:242:13 #36 0x5654f7eeefa5 in content::BrowserProcessSubThread::IOThreadRun(base::RunLoop*) ./../../content/browser/browser_process_sub_thread.cc:176:11 #37 0x5654f7eeeca0 in content::BrowserProcessSubThread::Run(base::RunLoop*) ./../../content/browser/browser_process_sub_thread.cc:128:7 #38 0x5654fe0e71f9 in base::Thread::ThreadMain() ./../../base/threading/thread.cc:312:3 #39 0x5654fe1d7dbc in base::(anonymous namespace)::ThreadFunc(void*) ./../../base/threading/platform_thread_posix.cc:81:13 #40 0x7fb052f6c6ba in start_thread ??:0:0 #41 0x7fb04cec041d in clone ??:0:0 ================================================================================