not seemingly related to mash.

example stack:
15422:15483:1023/014515.756689:ERROR:ssl_client_socket_impl.cc(1008)] handshake failed; returned -1, SSL error code 1, net_error -107
[15422:15483:1023/014515.775119:ERROR:ssl_client_socket_impl.cc(1008)] handshake failed; returned -1, SSL error code 1, net_error -107
[15422:15422:1023/014515.776982:WARNING:oauth2_access_token_fetcher_impl.cc(84)] Could not reach Google Accounts servers: errno -107
[15422:15483:1023/014523.999999:ERROR:ssl_client_socket_impl.cc(1008)] handshake failed; returned -1, SSL error code 1, net_error -107
[15422:15483:1023/014524.018329:ERROR:ssl_client_socket_impl.cc(1008)] handshake failed; returned -1, SSL error code 1, net_error -107
[15422:15422:1023/014524.019870:WARNING:oauth2_access_token_fetcher_impl.cc(84)] Could not reach Google Accounts servers: errno -107
[15422:15483:1023/014524.282835:ERROR:ssl_client_socket_impl.cc(1008)] handshake failed; returned -1, SSL error code 1, net_error -107
[15422:15483:1023/014524.300892:ERROR:ssl_client_socket_impl.cc(1008)] handshake failed; returned -1, SSL error code 1, net_error -107
[15422:15422:1023/014524.302639:WARNING:oauth2_access_token_fetcher_impl.cc(84)] Could not reach Google Accounts servers: errno -107
[15422:15483:1023/014527.516454:ERROR:checkin_request.cc(219)] Failed to get checkin response. Fetcher failed. Retrying.
BrowserTestBase received signal: Terminated. Backtrace:
#0 0x7f3dee9bfd7d base::debug::StackTrace::StackTrace()
#1 0x7f3dee6c2eda base::debug::StackTrace::StackTrace()
#2 0x000008ed1552 content::(anonymous namespace)::DumpStackTraceSignalHandler()
#3 0x7f3dbd308cb0 <unknown>
#4 0x7f3dbd3d06d3 epoll_wait
#5 0x7f3deea6e5ff epoll_dispatch
#6 0x7f3deea61d95 event_base_loop
#7 0x7f3deea11cb2 base::MessagePumpLibevent::Run()
#8 0x7f3dee7551be base::MessageLoop::Run()
#9 0x7f3dee8018c2 base::RunLoop::Run()
#10 0x000007a2da2b net::test_server::ControllableHttpResponse::WaitForRequest()
#11 0x000002e525ae chromeos::UserImageManagerTest::CompleteProfileImageDownload()
#12 0x000002e4a1e6 chromeos::UserImageManagerTest_ProfileImageDownloadDoesNotClobber_Test::RunTestOnMainThread()
#13 0x000008ecfa49 content::BrowserTestBase::ProxyRunTestOnMainThreadLoop()
#14 0x000000b48d6d _ZN4base8internal13FunctorTraitsIM25RenderViewContextMenuBaseFvvEvE6InvokeIS4_P21RenderViewContextMenuJEEEvT_OT0_DpOT1_
#15 0x000000b48cb4 _ZN4base8internal12InvokeHelperILb0EvE8MakeItSoIM25RenderViewContextMenuBaseFvvEJP21RenderViewContextMenuEEEvOT_DpOT0_
#16 0x000008ed2905 _ZN4base8internal7InvokerINS0_9BindStateIMN7content15BrowserTestBaseEFvvEJNS0_17UnretainedWrapperIS4_EEEEEFvvEE7RunImplIRKS6_RKNSt3__15tupleIJS8_EEEJLm0EEEEvOT_OT0_NSF_16integer_sequenceImJXspT1_EEEE
#17 0x000008ed283c _ZN4base8internal7InvokerINS0_9BindStateIMN7content15BrowserTestBaseEFvvEJNS0_17UnretainedWrapperIS4_EEEEEFvvEE3RunEPNS0_13BindStateBaseE
#18 0x000000b3953d _ZNKR4base17RepeatingCallbackIFvvEE3RunEv
#19 0x000007c58d4d ChromeBrowserMainParts::PreMainMessageLoopRunImpl()
#20 0x000007c56db8 ChromeBrowserMainParts::PreMainMessageLoopRun()
#21 0x000003971b36 chromeos::ChromeBrowserMainPartsChromeos::PreMainMessageLoopRun()
#22 0x7f3de435bcfc content::BrowserMainLoop::PreMainMessageLoopRun()
#23 0x7f3de2f787cd _ZN4base8internal13FunctorTraitsIMN7content12ChildProcessEFvvEvE6InvokeIS5_PS3_JEEEvT_OT0_DpOT1_
#24 0x7f3de2f78714 _ZN4base8internal12InvokeHelperILb0EvE8MakeItSoIMN7content12ChildProcessEFvvEJPS5_EEEvOT_DpOT0_
#25 0x7f3de4361c05 _ZN4base8internal7InvokerINS0_9BindStateIMN7content15BrowserMainLoopEFivEJNS0_17UnretainedWrapperIS4_EEEEEFivEE7RunImplIRKS6_RKNSt3__15tupleIJS8_EEEJLm0EEEEiOT_OT0_NSF_16integer_sequenceImJXspT1_EEEE
#26 0x7f3de4361b3c _ZN4base8internal7InvokerINS0_9BindStateIMN7content15BrowserMainLoopEFivEJNS0_17UnretainedWrapperIS4_EEEEEFivEE3RunEPNS0_13BindStateBaseE
#27 0x7f3de2e8310d _ZNKR4base17RepeatingCallbackIFvvEE3RunEv
#28 0x7f3de5337f1d content::StartupTaskRunner::RunAllTasksNow()
#29 0x7f3de43577ff content::BrowserMainLoop::CreateStartupTasks()
#30 0x7f3de4364272 content::BrowserMainRunnerImpl::Initialize()
#31 0x7f3de434ec59 content::BrowserMain()
#32 0x7f3de6662f40 content::RunBrowserProcessMain()
#33 0x7f3de6665c0a content::ContentMainRunnerImpl::Run()
#34 0x7f3de665bd5c content::ContentServiceManagerMainDelegate::RunEmbedderProcess()
#35 0x7f3dbb953d21 service_manager::Main()
#36 0x7f3de6660675 content::ContentMain()
#37 0x000008ecf007 content::BrowserTestBase::SetUp()
#38 0x000007aebb6b InProcessBrowserTest::SetUp()
#39 0x000002d9e650 chromeos::LoginManagerTest::SetUp()
#40 0x000000b970fe _ZN7testing8internal12InvokeHelperIRKNSt3__16vectorIPN12user_manager4UserENS2_9allocatorIS6_EEEENS2_5tupleIJEEEE12InvokeMethodIN8chromeos15MockUserManagerEMSH_KFSB_vEEESB_PT_T0_RKSD_
#41 0x0000047b9362 testing::internal::HandleExceptionsInMethodIfSupported<>()
#42 0x000004799a84 testing::Test::Run()
#43 0x00000479a485 testing::TestInfo::Run()
#44 0x00000479b22f testing::TestCase::Run()
#45 0x0000047aeda8 testing::internal::UnitTestImpl::RunAllTests()
#46 0x0000047c2c2e testing::internal::HandleSehExceptionsInMethodIfSupported<>()
#47 0x0000047ba942 testing::internal::HandleExceptionsInMethodIfSupported<>()
#48 0x0000047aea07 testing::UnitTest::Run()
#49 0x000007b35421 RUN_ALL_TESTS()
#50 0x000007b325eb base::TestSuite::Run()
#51 0x0000079ea1d7 ChromeTestSuiteRunner::RunTestSuite()
#52 0x0000079ea2c3 ChromeTestLauncherDelegate::RunTestSuite()
#53 0x000008f58179 content::LaunchTests()
#54 0x0000079eb612 LaunchChromeTests()
#55 0x0000079e9b1b main
#56 0x7f3dbd2f3f45 __libc_start_main
#57 0x000000ac467a _start
[530/530] UserImageManagerTest.ProfileImageDownloadDoesNotClobber (TIMED OUT)