Currently PreferencesTest.MultiProfiles is flaking on mash_browsertests

Failing build: https://build.chromium.org/p/chromium.fyi/builders/Mojo%20ChromiumOS/builds/24496

Stack Trace:
BrowserTestBase received signal: Segmentation fault. Backtrace:
#0 0x000003c079fc base::debug::StackTrace::StackTrace()
#1 0x00000423f9f2 content::(anonymous namespace)::DumpStackTraceSignalHandler()
#2 0x7f2344152cb0 <unknown>
#3 0x0000005ccbb1 base::subtle::RefCountedThreadSafeBase::Release()
#4 0x000005adb015 base::internal::flat_tree<>::erase()
#5 0x000005adbdeb mojo::edk::WatcherDispatcher::CancelWatch()
#6 0x000005ac0016 mojo::edk::Core::CancelWatch()
#7 0x000004f03a66 mojo::SimpleWatcher::Cancel()
#8 0x000004f03829 mojo::SimpleWatcher::~SimpleWatcher()
#9 0x000004ee5e46 mojo::Connector::PassMessagePipe()
#10 0x000004ee5d97 mojo::Connector::CloseMessagePipe()
#11 0x000004ef023a mojo::internal::MultiplexRouter::CloseMessagePipe()
#12 0x000004ee995e mojo::internal::InterfacePtrStateBase::~InterfacePtrStateBase()
#13 0x000005b41c57 viz::ClientLayerTreeFrameSink::DetachFromClient()
#14 0x000005628bfe cc::LayerTreeHostImpl::ReleaseLayerTreeFrameSink()
#15 0x0000056c27dd cc::SingleThreadProxy::Stop()
#16 0x0000056b34ef cc::LayerTreeHost::~LayerTreeHost()
#17 0x0000056b3c9e cc::LayerTreeHost::~LayerTreeHost()
#18 0x0000059fb3ed ui::Compositor::~Compositor()
#19 0x0000059fb79e ui::Compositor::~Compositor()
#20 0x0000068027bb views::DesktopWindowTreeHostMus::CloseNow()
#21 0x0000006d4b27 _ZN4base8internal7InvokerINS0_9BindStateIMN12_GLOBAL__N_116SimpleHttpServer10ConnectionEFvvEJNS_7WeakPtrIS5_EEEEEFvvEE7RunOnceEPNS0_13BindStateBaseE
#22 0x000003c081b5 base::debug::TaskAnnotator::RunTask()
#23 0x000003cbe9c9 base::internal::IncomingTaskQueue::RunTask()
#24 0x000003c2933b base::MessageLoop::RunTask()
#25 0x000003c296da base::MessageLoop::DeferOrRunPendingTask()
#26 0x000003c29966 base::MessageLoop::DoWork()
#27 0x000003c2ba29 base::MessagePumpLibevent::Run()
#28 0x000003c28c39 base::MessageLoop::Run()
#29 0x000003c52858 base::RunLoop::Run()
#30 0x00000427c946 content::MessageLoopRunner::Run()
#31 0x00000427ce85 content::WindowedNotificationObserver::Wait()
#32 0x000001366c7e chromeos::LoginManagerTest::AddUserToSession()
#33 0x000001367184 chromeos::LoginManagerTest::AddUser()
#34 0x00000144440b chromeos::PreferencesTest_MultiProfiles_Test::RunTestOnMainThread()
#35 0x00000423f753 content::BrowserTestBase::ProxyRunTestOnMainThreadLoop()
#36 0x000003d387d5 ChromeBrowserMainParts::PreMainMessageLoopRunImpl()
#37 0x000003d375fd ChromeBrowserMainParts::PreMainMessageLoopRun()
#38 0x0000017e073c chromeos::ChromeBrowserMainPartsChromeos::PreMainMessageLoopRun()
#39 0x0000024dba51 content::BrowserMainLoop::PreMainMessageLoopRun()
#40 0x000002911bc5 content::StartupTaskRunner::RunAllTasksNow()
#41 0x0000024d9e5f content::BrowserMainLoop::CreateStartupTasks()
#42 0x0000024defc8 content::BrowserMainRunnerImpl::Initialize()
#43 0x0000024d79a2 content::BrowserMain()
#44 0x000003be94c1 content::ContentMainRunnerImpl::Run()
#45 0x000005ba531b service_manager::Main()
#46 0x000003be7ea4 content::ContentMain()
#47 0x00000423f3c5 content::BrowserTestBase::SetUp()
#48 0x000003cf2879 InProcessBrowserTest::SetUp()
#49 0x000001365d3a chromeos::LoginManagerTest::SetUp()
#50 0x000001b49be1 testing::Test::Run()
#51 0x000001b4a6d0 testing::TestInfo::Run()
#52 0x000001b4abb7 testing::TestCase::Run()
#53 0x000001b51167 testing::internal::UnitTestImpl::RunAllTests()
#54 0x000001b50de7 testing::UnitTest::Run()
#55 0x000003d08762 base::TestSuite::Run()
#56 0x000003bfa9f9 ChromeTestSuiteRunner::RunTestSuite()
#57 0x000004276374 content::LaunchTests()
#58 0x000003bfae25 LaunchChromeTests()
#59 0x000003bfa876 RunMashBrowserTests()
#60 0x000003bfa727 main
#61 0x7f234413df45 __libc_start_main