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The Dart SDK, including the VM, dart2js, core libraries, and more.
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Timeout in pause_on_start_then_step_test on Windows debug checked #29568

Open jensjoha opened 7 years ago

jensjoha commented 7 years ago

https://uberchromegw.corp.google.com/i/client.dart/builders/vm-win-debug-x64-be/builds/3924/steps/checked%20vm%20tests/logs/stdio

FAILED: none-vm-checked debug_x64service/pause_on_start_then_step_test
Expected: Pass RuntimeError 
Actual: Timeout
CommandOutput[vm]:
diagnostics: Using E:\b\depot_tools\win_toolchain\vs_files\d5dc33b15d1b2c086f2f6632e2fd15882f80dbd3\win_sdk\Debuggers\x64\cdb.exe to print stack traces
    Process list including children: [988, 4484]
    Trying to capture stack trace for pid 988

    Microsoft (R) Windows Debugger Version 10.0.14321.1024 AMD64
    Copyright (c) Microsoft Corporation. All rights reserved.

    *** wait with pending attach
    Symbol search path is: srv*
    Executable search path is: 
    ModLoad: 00000001`40000000 00000001`40ee0000   E:\b\build\slave\vm-win-debug-x64-be\build\sdk\out\DebugX64\dart.exe
    ModLoad: 00000000`77370000 00000000`77518000   C:\Windows\SYSTEM32\ntdll.dll
    ModLoad: 00000000`77150000 00000000`7726f000   C:\Windows\system32\kernel32.dll
    ModLoad: 000007fe`fd480000 000007fe`fd4ec000   C:\Windows\system32\KERNELBASE.dll
    ModLoad: 000007fe`fa990000 000007fe`fa9b7000   C:\Windows\system32\IPHLPAPI.DLL
    ModLoad: 000007fe`ff480000 000007fe`ff51f000   C:\Windows\system32\msvcrt.dll
    ModLoad: 000007fe`fdae0000 000007fe`fdae8000   C:\Windows\system32\NSI.dll
    ModLoad: 000007fe`fa970000 000007fe`fa97b000   C:\Windows\system32\WINNSI.DLL
    ModLoad: 000007fe`fd590000 000007fe`fd6bd000   C:\Windows\system32\RPCRT4.dll
    ModLoad: 00000000`77540000 00000000`77547000   C:\Windows\system32\PSAPI.DLL
    ModLoad: 000007fe`fda90000 000007fe`fdadd000   C:\Windows\system32\WS2_32.dll
    ModLoad: 000007fe`ff5a0000 000007fe`ff67b000   C:\Windows\system32\ADVAPI32.dll
    ModLoad: 000007fe`fda10000 000007fe`fda2f000   C:\Windows\SYSTEM32\sechost.dll
    ModLoad: 000007fe`fe560000 000007fe`ff2e9000   C:\Windows\system32\SHELL32.dll
    ModLoad: 000007fe`fe4e0000 000007fe`fe551000   C:\Windows\system32\SHLWAPI.dll
    ModLoad: 000007fe`ff530000 000007fe`ff597000   C:\Windows\system32\GDI32.dll
    ModLoad: 00000000`77270000 00000000`7736a000   C:\Windows\system32\USER32.dll
    ModLoad: 000007fe`ff520000 000007fe`ff52e000   C:\Windows\system32\LPK.dll
    ModLoad: 000007fe`fe410000 000007fe`fe4d9000   C:\Windows\system32\USP10.dll
    ModLoad: 000007fe`f7560000 000007fe`f7685000   C:\Windows\system32\dbghelp.dll
    ModLoad: 000007fe`fe3e0000 000007fe`fe40e000   C:\Windows\system32\IMM32.DLL
    ModLoad: 000007fe`fdf70000 000007fe`fe079000   C:\Windows\system32\MSCTF.dll
    ModLoad: 000007fe`f7ea0000 000007fe`f7ea3000   C:\Windows\system32\api-ms-win-core-synch-l1-2-0.DLL
    ModLoad: 000007fe`fcf70000 000007fe`fcf7f000   C:\Windows\system32\cryptbase.dll
    ModLoad: 000007fe`fd020000 000007fe`fd077000   C:\Windows\system32\apphelp.dll
    ModLoad: 000007fe`fc8d0000 000007fe`fc925000   C:\Windows\system32\mswsock.dll
    ModLoad: 000007fe`fc2e0000 000007fe`fc2e7000   C:\Windows\System32\wshtcpip.dll
    (3dc.10e0): Break instruction exception - code 80000003 (first chance)
    ntdll!DbgBreakPoint:
    00000000`773bce10 cc              int     3
    0:009> cdb: Reading initial command '!uniqstack;qd'
    Processing 10 threads, please wait
    *** WARNING: Unable to verify checksum for E:\b\build\slave\vm-win-debug-x64-be\build\sdk\out\DebugX64\dart.exe

    .  0  Id: 3dc.1d44 Suspend: 1 Teb: 000007ff`fffde000 Unfrozen
          Start: dart!ILT+136720(mainCRTStartup) (00000001`40022615)
          Priority: 0  Priority class: 32  Affinity: ff
    Child-SP          RetAddr           Call Site
    00000000`0012f658 000007fe`fd4810dc ntdll!ZwWaitForSingleObject+0xa
    00000000`0012f660 00000001`401d3917 KERNELBASE!WaitForSingleObjectEx+0x79
    00000000`0012f700 00000001`401c277e dart!dart::Monitor::Wait+0x97
    (Inline Function) --------`-------- dart!dart::MonitorLocker::Wait+0xb
    00000000`0012f750 00000001`4004c3a8 dart!Dart_RunLoop+0x26e
    00000000`0012f8b0 00000001`4004d0b7 dart!dart::bin::RunMainIsolate+0x888
    00000000`0012fd10 00000001`4004d509 dart!dart::bin::main+0x3a7
    00000000`0012fe30 00000001`4077b984 dart!main+0x9
    00000000`0012fe60 00000001`4077b827 dart!invoke_main+0x34
    00000000`0012fea0 00000001`4077b6ee dart!__scrt_common_main_seh+0x127
    00000000`0012ff00 00000001`4077b9a9 dart!__scrt_common_main+0xe
    00000000`0012ff30 00000000`771659cd dart!mainCRTStartup+0x9
    00000000`0012ff60 00000000`7739b891 kernel32!BaseThreadInitThunk+0xd
    00000000`0012ff90 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    .  1  Id: 3dc.139c Suspend: 1 Teb: 000007ff`fffdc000 Unfrozen
          Start: dart!thread_start<unsigned int (__cdecl*)(void * __ptr64)> (00000001`407e6ef0)
          Priority: 0  Priority class: 32  Affinity: ff
    Child-SP          RetAddr           Call Site
    00000000`01d3fd58 000007fe`fd4816ad ntdll!NtRemoveIoCompletion+0xa
    00000000`01d3fd60 00000000`77159981 KERNELBASE!GetQueuedCompletionStatus+0x39
    00000000`01d3fdc0 00000001`40052aaa kernel32!GetQueuedCompletionStatusStub+0x11
    00000000`01d3fe00 00000001`40086a35 dart!dart::bin::EventHandlerImplementation::EventHandlerEntry+0x13a
    00000000`01d3fea0 00000001`407e74dc dart!dart::bin::ThreadEntry+0x25
    00000000`01d3fed0 00000001`407e6f83 dart!invoke_thread_procedure+0x2c
    00000000`01d3ff10 00000000`771659cd dart!thread_start<unsigned int (__cdecl*)(void * __ptr64)>+0x93
    00000000`01d3ff60 00000000`7739b891 kernel32!BaseThreadInitThunk+0xd
    00000000`01d3ff90 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    .  2  Id: 3dc.8a0 Suspend: 1 Teb: 000007ff`fffda000 Unfrozen
          Start: dart!thread_start<unsigned int (__cdecl*)(void * __ptr64)> (00000001`407e6ef0)
          Priority: 0  Priority class: 32  Affinity: ff
    Child-SP          RetAddr           Call Site
    00000000`036bf7e8 000007fe`fd486bef ntdll!ZwResumeThread+0xa
    00000000`036bf7f0 00000001`4073f9a6 KERNELBASE!ResumeThread+0xf
    00000000`036bf820 00000001`4073faf5 dart!dart::ThreadInterrupterWin::Interrupt+0x1b6
    00000000`036bfd90 00000001`4048c035 dart!dart::ThreadInterrupter::InterruptThread+0x65
    00000000`036bfdd0 00000001`401d3553 dart!dart::ThreadInterrupter::ThreadMain+0x255
    00000000`036bfea0 00000001`407e74dc dart!dart::ThreadEntry+0x53
    00000000`036bfed0 00000001`407e6f83 dart!invoke_thread_procedure+0x2c
    00000000`036bff10 00000000`771659cd dart!thread_start<unsigned int (__cdecl*)(void * __ptr64)>+0x93
    00000000`036bff60 00000000`7739b891 kernel32!BaseThreadInitThunk+0xd
    00000000`036bff90 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    .  3  Id: 3dc.1764 Suspend: 1 Teb: 000007ff`fffd6000 Unfrozen
          Start: dart!thread_start<unsigned int (__cdecl*)(void * __ptr64)> (00000001`407e6ef0)
          Priority: 0  Priority class: 32  Affinity: ff
    Child-SP          RetAddr           Call Site
    00000000`0386f1b8 000007fe`fd4810dc ntdll!ZwWaitForSingleObject+0xa
    00000000`0386f1c0 00000001`401d3917 KERNELBASE!WaitForSingleObjectEx+0x79
    00000000`0386f260 00000001`40388484 dart!dart::Monitor::Wait+0x97
    (Inline Function) --------`-------- dart!dart::MonitorLocker::Wait+0xa
    00000000`0386f2b0 00000001`405258f6 dart!dart::BackgroundCompiler::Run+0x7a4
    00000000`0386fd50 00000001`40525d44 dart!dart::ThreadPool::Worker::Loop+0x116
    00000000`0386fe30 00000001`401d3553 dart!dart::ThreadPool::Worker::Main+0xf4
    00000000`0386fea0 00000001`407e74dc dart!dart::ThreadEntry+0x53
    00000000`0386fed0 00000001`407e6f83 dart!invoke_thread_procedure+0x2c
    00000000`0386ff10 00000000`771659cd dart!thread_start<unsigned int (__cdecl*)(void * __ptr64)>+0x93
    00000000`0386ff60 00000000`7739b891 kernel32!BaseThreadInitThunk+0xd
    00000000`0386ff90 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    .  4  Id: 3dc.a48 Suspend: 1 Teb: 000007ff`fffa2000 Unfrozen
          Start: dart!thread_start<unsigned int (__cdecl*)(void * __ptr64)> (00000001`407e6ef0)
          Priority: 0  Priority class: 32  Affinity: ff
    Child-SP          RetAddr           Call Site
    00000000`0552bf28 000007fe`fd4810dc ntdll!ZwWaitForSingleObject+0xa
    00000000`0552bf30 00000001`401d3917 KERNELBASE!WaitForSingleObjectEx+0x79
    00000000`0552bfd0 00000001`404810e8 dart!dart::Monitor::Wait+0x97
    (Inline Function) --------`-------- dart!dart::MonitorLocker::Wait+0xa
    00000000`0552c020 00000001`4037f3b1 dart!dart::SafepointHandler::BlockForSafepoint+0x118
    (Inline Function) --------`-------- dart!dart::Thread::CheckForSafepoint+0x11
    00000000`0552c090 00000001`40382a88 dart!dart::CompileParsedFunctionHelper::Compile+0x15a1
    00000000`0552dd60 00000001`403835ec dart!dart::CompileFunctionHelper+0x6e8
    00000000`0552f200 00000001`40388050 dart!dart::Compiler::CompileOptimizedFunction+0x15c
    00000000`0552f2b0 00000001`405258f6 dart!dart::BackgroundCompiler::Run+0x370
    00000000`0552fd50 00000001`40525d44 dart!dart::ThreadPool::Worker::Loop+0x116
    00000000`0552fe30 00000001`401d3553 dart!dart::ThreadPool::Worker::Main+0xf4
    00000000`0552fea0 00000001`407e74dc dart!dart::ThreadEntry+0x53
    00000000`0552fed0 00000001`407e6f83 dart!invoke_thread_procedure+0x2c
    00000000`0552ff10 00000000`771659cd dart!thread_start<unsigned int (__cdecl*)(void * __ptr64)>+0x93
    00000000`0552ff60 00000000`7739b891 kernel32!BaseThreadInitThunk+0xd
    00000000`0552ff90 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    .  5  Id: 3dc.9a4 Suspend: 1 Teb: 000007ff`fff9e000 Unfrozen
          Start: dart!thread_start<unsigned int (__cdecl*)(void * __ptr64)> (00000001`407e6ef0)
          Priority: 0  Priority class: 32  Affinity: ff
    Child-SP          RetAddr           Call Site
    00000000`0572bde8 000007fe`fd4810dc ntdll!ZwWaitForSingleObject+0xa
    00000000`0572bdf0 00000001`401d3917 KERNELBASE!WaitForSingleObjectEx+0x79
    00000000`0572be90 00000001`407463ca dart!dart::Monitor::Wait+0x97
    (Inline Function) --------`-------- dart!dart::MonitorLocker::Wait+0xa
    (Inline Function) --------`-------- dart!dart::ThreadBarrier::Sync+0x116
    00000000`0572bee0 00000001`404d8dd6 dart!dart::GCMarker::MarkObjects+0x6ba
    00000000`0572cbf0 00000001`402323e7 dart!dart::PageSpace::MarkSweep+0x286
    00000000`0572cdc0 00000001`40231ec4 dart!dart::Heap::CollectOldSpaceGarbage+0xc7
    00000000`0572ce60 00000001`4038334d dart!dart::Heap::CollectAllGarbage+0x124
    00000000`0572cf10 00000001`4046f50d dart!dart::BackgroundCompiler::CompileOptimized+0xfd
    00000000`0572cf70 00000001`40406d70 dart!dart::DRT_HelperOptimizeInvokedFunction+0x24d
    00000000`0572cfe0 00000000`002304f7 dart!dart::DRT_OptimizeInvokedFunction+0x170
    00000000`0572d900 00000000`001e0021 0x2304f7
    00000000`0572d908 00000001`4001b595 0x1e0021
    00000000`0572d910 00000000`4dc2fe28 dart!ILT+107920(?DRT_OptimizeInvokedFunctiondartYAXVNativeArguments
    00000000`0572d918 00000000`07a42631 0x4dc2fe28
    00000000`0572d920 00000000`02174c70 0x7a42631
    00000000`0572d928 00000000`00000001 0x2174c70
    00000000`0572d930 00000000`0572d960 0x1
    00000000`0572d938 00000000`0572d968 0x572d960
    00000000`0572d940 00000000`001e2661 0x572d968
    00000000`0572d948 00000000`001e3721 0x1e2661
    00000000`0572d950 00000000`0572d988 0x1e3721
    00000000`0572d958 00000000`002308d1 0x572d988
    00000000`0572d960 00000000`07a42631 0x2308d1
    00000000`0572d968 00000000`00000000 0x7a42631

    .  6  Id: 3dc.1f58 Suspend: 2 Teb: 000007ff`fff92000 Unfrozen
          Start: dart!thread_start<unsigned int (__cdecl*)(void * __ptr64)> (00000001`407e6ef0)
          Priority: 0  Priority class: 32  Affinity: ff
    Child-SP          RetAddr           Call Site
    00000000`05d2f1c8 000007fe`fd4810dc ntdll!ZwWaitForSingleObject+0xa
    00000000`05d2f1d0 00000001`401d3917 KERNELBASE!WaitForSingleObjectEx+0x79
    00000000`05d2f270 00000001`4074848a dart!dart::Monitor::Wait+0x97
    (Inline Function) --------`-------- dart!dart::MonitorLocker::Wait+0xa
    00000000`05d2f2c0 00000001`407480c0 dart!dart::ThreadBarrier::Sync+0x7a
    00000000`05d2f320 00000001`405258f6 dart!dart::MarkTask::Run+0x290
    00000000`05d2fd50 00000001`40525d44 dart!dart::ThreadPool::Worker::Loop+0x116
    00000000`05d2fe30 00000001`401d3553 dart!dart::ThreadPool::Worker::Main+0xf4
    00000000`05d2fea0 00000001`407e74dc dart!dart::ThreadEntry+0x53
    00000000`05d2fed0 00000001`407e6f83 dart!invoke_thread_procedure+0x2c
    00000000`05d2ff10 00000000`771659cd dart!thread_start<unsigned int (__cdecl*)(void * __ptr64)>+0x93
    00000000`05d2ff60 00000000`7739b891 kernel32!BaseThreadInitThunk+0xd
    00000000`05d2ff90 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    .  7  Id: 3dc.d7c Suspend: 1 Teb: 000007ff`fff8e000 Unfrozen
          Start: ntdll!TppWaiterpThread (00000000`7738a7e0)
          Priority: 0  Priority class: 32  Affinity: ff
    Child-SP          RetAddr           Call Site
    00000000`07cffcb8 00000000`7738a927 ntdll!NtWaitForMultipleObjects+0xa
    00000000`07cffcc0 00000000`771659cd ntdll!TppWaiterpThread+0x14d
    00000000`07cfff60 00000000`7739b891 kernel32!BaseThreadInitThunk+0xd
    00000000`07cfff90 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    .  9  Id: 3dc.10e0 Suspend: 1 Teb: 000007ff`fffae000 Unfrozen
          Start: ntdll!DbgUiRemoteBreakin (00000000`77463760)
          Priority: 0  Priority class: 32  Affinity: ff
    Child-SP          RetAddr           Call Site
    00000000`03ecff28 00000000`77463798 ntdll!DbgBreakPoint
    00000000`03ecff30 00000000`771659cd ntdll!DbgUiRemoteBreakin+0x38
    00000000`03ecff60 00000000`7739b891 kernel32!BaseThreadInitThunk+0xd
    00000000`03ecff90 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    Total threads: 10
    Duplicate callstacks: 1 (windbg thread #s follow):
    8
    quit:

    Trying to capture stack trace for pid 4484

    Microsoft (R) Windows Debugger Version 10.0.14321.1024 AMD64
    Copyright (c) Microsoft Corporation. All rights reserved.

    *** wait with pending attach
    Symbol search path is: srv*
    Executable search path is: 
    ModLoad: 00000001`40000000 00000001`40ee0000   E:\b\build\slave\vm-win-debug-x64-be\build\sdk\out\DebugX64\dart.exe
    ModLoad: 00000000`77370000 00000000`77518000   C:\Windows\SYSTEM32\ntdll.dll
    ModLoad: 00000000`77150000 00000000`7726f000   C:\Windows\system32\kernel32.dll
    ModLoad: 000007fe`fd480000 000007fe`fd4ec000   C:\Windows\system32\KERNELBASE.dll
    ModLoad: 000007fe`fa990000 000007fe`fa9b7000   C:\Windows\system32\IPHLPAPI.DLL
    ModLoad: 000007fe`ff480000 000007fe`ff51f000   C:\Windows\system32\msvcrt.dll
    ModLoad: 000007fe`fdae0000 000007fe`fdae8000   C:\Windows\system32\NSI.dll
    ModLoad: 000007fe`fa970000 000007fe`fa97b000   C:\Windows\system32\WINNSI.DLL
    ModLoad: 000007fe`fd590000 000007fe`fd6bd000   C:\Windows\system32\RPCRT4.dll
    ModLoad: 00000000`77540000 00000000`77547000   C:\Windows\system32\PSAPI.DLL
    ModLoad: 000007fe`fda90000 000007fe`fdadd000   C:\Windows\system32\WS2_32.dll
    ModLoad: 000007fe`ff5a0000 000007fe`ff67b000   C:\Windows\system32\ADVAPI32.dll
    ModLoad: 000007fe`fda10000 000007fe`fda2f000   C:\Windows\SYSTEM32\sechost.dll
    ModLoad: 000007fe`fe560000 000007fe`ff2e9000   C:\Windows\system32\SHELL32.dll
    ModLoad: 000007fe`fe4e0000 000007fe`fe551000   C:\Windows\system32\SHLWAPI.dll
    ModLoad: 000007fe`ff530000 000007fe`ff597000   C:\Windows\system32\GDI32.dll
    ModLoad: 00000000`77270000 00000000`7736a000   C:\Windows\system32\USER32.dll
    ModLoad: 000007fe`ff520000 000007fe`ff52e000   C:\Windows\system32\LPK.dll
    ModLoad: 000007fe`fe410000 000007fe`fe4d9000   C:\Windows\system32\USP10.dll
    ModLoad: 000007fe`f7560000 000007fe`f7685000   C:\Windows\system32\dbghelp.dll
    ModLoad: 000007fe`fe3e0000 000007fe`fe40e000   C:\Windows\system32\IMM32.DLL
    ModLoad: 000007fe`fdf70000 000007fe`fe079000   C:\Windows\system32\MSCTF.dll
    ModLoad: 000007fe`f7ea0000 000007fe`f7ea3000   C:\Windows\system32\api-ms-win-core-synch-l1-2-0.DLL
    ModLoad: 000007fe`fcf70000 000007fe`fcf7f000   C:\Windows\system32\cryptbase.dll
    ModLoad: 000007fe`fc8d0000 000007fe`fc925000   C:\Windows\system32\mswsock.dll
    ModLoad: 000007fe`fc2e0000 000007fe`fc2e7000   C:\Windows\System32\wshtcpip.dll
    ModLoad: 000007fe`fc8c0000 000007fe`fc8c7000   C:\Windows\System32\wship6.dll
    ModLoad: 000007fe`fc750000 000007fe`fc7ab000   C:\Windows\system32\DNSAPI.dll
    ModLoad: 000007fe`fa0a0000 000007fe`fa0a8000   C:\Windows\system32\rasadhlp.dll
    ModLoad: 000007fe`fa7d0000 000007fe`fa823000   C:\Windows\System32\fwpuclnt.dll
    (1184.958): Break instruction exception - code 80000003 (first chance)
    ntdll!DbgBreakPoint:
    00000000`773bce10 cc              int     3
    0:008> cdb: Reading initial command '!uniqstack;qd'
    Processing 9 threads, please wait
    *** WARNING: Unable to verify checksum for E:\b\build\slave\vm-win-debug-x64-be\build\sdk\out\DebugX64\dart.exe

    .  0  Id: 1184.1838 Suspend: 1 Teb: 000007ff`fffdd000 Unfrozen
          Start: dart!ILT+136720(mainCRTStartup) (00000001`40022615)
          Priority: 0  Priority class: 32  Affinity: ff
    Child-SP          RetAddr           Call Site
    00000000`0012f658 000007fe`fd4810dc ntdll!ZwWaitForSingleObject+0xa
    00000000`0012f660 00000001`401d3917 KERNELBASE!WaitForSingleObjectEx+0x79
    00000000`0012f700 00000001`401c277e dart!dart::Monitor::Wait+0x97
    (Inline Function) --------`-------- dart!dart::MonitorLocker::Wait+0xb
    00000000`0012f750 00000001`4004c3a8 dart!Dart_RunLoop+0x26e
    00000000`0012f8b0 00000001`4004d0b7 dart!dart::bin::RunMainIsolate+0x888
    00000000`0012fd10 00000001`4004d509 dart!dart::bin::main+0x3a7
    00000000`0012fe30 00000001`4077b984 dart!main+0x9
    00000000`0012fe60 00000001`4077b827 dart!invoke_main+0x34
    00000000`0012fea0 00000001`4077b6ee dart!__scrt_common_main_seh+0x127
    00000000`0012ff00 00000001`4077b9a9 dart!__scrt_common_main+0xe
    00000000`0012ff30 00000000`771659cd dart!mainCRTStartup+0x9
    00000000`0012ff60 00000000`7739b891 kernel32!BaseThreadInitThunk+0xd
    00000000`0012ff90 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    .  1  Id: 1184.13c Suspend: 1 Teb: 000007ff`fffdb000 Unfrozen
          Start: dart!thread_start<unsigned int (__cdecl*)(void * __ptr64)> (00000001`407e6ef0)
          Priority: 0  Priority class: 32  Affinity: ff
    Child-SP          RetAddr           Call Site
    00000000`01ecfd58 000007fe`fd4816ad ntdll!NtRemoveIoCompletion+0xa
    00000000`01ecfd60 00000000`77159981 KERNELBASE!GetQueuedCompletionStatus+0x39
    00000000`01ecfdc0 00000001`40052aaa kernel32!GetQueuedCompletionStatusStub+0x11
    00000000`01ecfe00 00000001`40086a35 dart!dart::bin::EventHandlerImplementation::EventHandlerEntry+0x13a
    00000000`01ecfea0 00000001`407e74dc dart!dart::bin::ThreadEntry+0x25
    00000000`01ecfed0 00000001`407e6f83 dart!invoke_thread_procedure+0x2c
    00000000`01ecff10 00000000`771659cd dart!thread_start<unsigned int (__cdecl*)(void * __ptr64)>+0x93
    00000000`01ecff60 00000000`7739b891 kernel32!BaseThreadInitThunk+0xd
    00000000`01ecff90 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    .  2  Id: 1184.904 Suspend: 1 Teb: 000007ff`fffd9000 Unfrozen
          Start: dart!thread_start<unsigned int (__cdecl*)(void * __ptr64)> (00000001`407e6ef0)
          Priority: 0  Priority class: 32  Affinity: ff
    Child-SP          RetAddr           Call Site
    00000000`037cfcd8 000007fe`fd4810dc ntdll!ZwWaitForSingleObject+0xa
    00000000`037cfce0 00000001`401d3917 KERNELBASE!WaitForSingleObjectEx+0x79
    00000000`037cfd80 00000001`4048bf1e dart!dart::Monitor::Wait+0x97
    (Inline Function) --------`-------- dart!dart::MonitorLocker::WaitMicros+0xb
    00000000`037cfdd0 00000001`401d3553 dart!dart::ThreadInterrupter::ThreadMain+0x13e
    00000000`037cfea0 00000001`407e74dc dart!dart::ThreadEntry+0x53
    00000000`037cfed0 00000001`407e6f83 dart!invoke_thread_procedure+0x2c
    00000000`037cff10 00000000`771659cd dart!thread_start<unsigned int (__cdecl*)(void * __ptr64)>+0x93
    00000000`037cff60 00000000`7739b891 kernel32!BaseThreadInitThunk+0xd
    00000000`037cff90 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    .  3  Id: 1184.1bec Suspend: 1 Teb: 000007ff`fffd7000 Unfrozen
          Start: dart!thread_start<unsigned int (__cdecl*)(void * __ptr64)> (00000001`407e6ef0)
          Priority: 0  Priority class: 32  Affinity: ff
    Child-SP          RetAddr           Call Site
    00000000`038cf1b8 000007fe`fd4810dc ntdll!ZwWaitForSingleObject+0xa
    00000000`038cf1c0 00000001`401d3917 KERNELBASE!WaitForSingleObjectEx+0x79
    00000000`038cf260 00000001`40388484 dart!dart::Monitor::Wait+0x97
    (Inline Function) --------`-------- dart!dart::MonitorLocker::Wait+0xa
    00000000`038cf2b0 00000001`405258f6 dart!dart::BackgroundCompiler::Run+0x7a4
    00000000`038cfd50 00000001`40525d44 dart!dart::ThreadPool::Worker::Loop+0x116
    00000000`038cfe30 00000001`401d3553 dart!dart::ThreadPool::Worker::Main+0xf4
    00000000`038cfea0 00000001`407e74dc dart!dart::ThreadEntry+0x53
    00000000`038cfed0 00000001`407e6f83 dart!invoke_thread_procedure+0x2c
    00000000`038cff10 00000000`771659cd dart!thread_start<unsigned int (__cdecl*)(void * __ptr64)>+0x93
    00000000`038cff60 00000000`7739b891 kernel32!BaseThreadInitThunk+0xd
    00000000`038cff90 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    .  4  Id: 1184.948 Suspend: 1 Teb: 000007ff`fffd3000 Unfrozen
          Start: ntdll!TppWaiterpThread (00000000`7738a7e0)
          Priority: 0  Priority class: 32  Affinity: ff
    Child-SP          RetAddr           Call Site
    00000000`04a5fcb8 00000000`7738a927 ntdll!NtWaitForMultipleObjects+0xa
    00000000`04a5fcc0 00000000`771659cd ntdll!TppWaiterpThread+0x14d
    00000000`04a5ff60 00000000`7739b891 kernel32!BaseThreadInitThunk+0xd
    00000000`04a5ff90 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    .  5  Id: 1184.a88 Suspend: 1 Teb: 000007ff`fff96000 Unfrozen
          Start: dart!thread_start<unsigned int (__cdecl*)(void * __ptr64)> (00000001`407e6ef0)
          Priority: 0  Priority class: 32  Affinity: ff
    Child-SP          RetAddr           Call Site
    00000000`0627deb8 000007fe`fd4810dc ntdll!ZwWaitForSingleObject+0xa
    00000000`0627dec0 00000001`401d3917 KERNELBASE!WaitForSingleObjectEx+0x79
    00000000`0627df60 00000001`402097f0 dart!dart::Monitor::Wait+0x97
    (Inline Function) --------`-------- dart!dart::MonitorLocker::Wait+0xa
    00000000`0627dfb0 00000001`4039b923 dart!dart::Isolate::PauseEventHandler+0x210
    00000000`0627e070 00000001`403a4979 dart!dart::Debugger::Pause+0x293
    00000000`0627e2d0 00000001`40398fe9 dart!dart::Debugger::SignalPausedEvent+0x169
    00000000`0627e3f0 00000001`40478dd5 dart!dart::Debugger::PauseStepping+0x2b9
    (Inline Function) --------`-------- dart!dart::DRT_HelperSingleStepHandler+0x24
    00000000`0627e460 00000000`003404f7 dart!dart::DRT_SingleStepHandler+0x165
    00000000`0627ed70 00000000`00302661 0x3404f7
    00000000`0627ed78 00000001`40018c8c 0x302661
    00000000`0627ed80 00000000`0627fb90 dart!ILT+97415(?DRT_SingleStepHandlerdartYAXVNativeArguments
    00000000`0627ed88 00000000`003404f7 0x627fb90
    00000000`0627ed90 00000000`02290f10 0x3404f7
    00000000`0627ed98 00000000`00000000 0x2290f10

    .  6  Id: 1184.13c4 Suspend: 1 Teb: 000007ff`fffd5000 Unfrozen
          Start: ntdll!TppWorkerThread (00000000`7738f440)
          Priority: 0  Priority class: 32  Affinity: ff
    Child-SP          RetAddr           Call Site
    00000000`03d9fc58 00000000`7738f68b ntdll!ZwWaitForWorkViaWorkerFactory+0xa
    00000000`03d9fc60 00000000`771659cd ntdll!TppWorkerThread+0x2c9
    00000000`03d9ff60 00000000`7739b891 kernel32!BaseThreadInitThunk+0xd
    00000000`03d9ff90 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    .  8  Id: 1184.958 Suspend: 1 Teb: 000007ff`fffae000 Unfrozen
          Start: ntdll!DbgUiRemoteBreakin (00000000`77463760)
          Priority: 0  Priority class: 32  Affinity: ff
    Child-SP          RetAddr           Call Site
    00000000`0461ff28 00000000`77463798 ntdll!DbgBreakPoint
    00000000`0461ff30 00000000`771659cd ntdll!DbgUiRemoteBreakin+0x38
    00000000`0461ff60 00000000`7739b891 kernel32!BaseThreadInitThunk+0xd
    00000000`0461ff90 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

    Total threads: 9
    Duplicate callstacks: 1 (windbg thread #s follow):
    7
    quit:

stdout:
** Launching SERVICE_TEST_TESTEE=true out\DebugX64\dart.exe -DDART_SERVICE_USE_AUTH=false --pause-isolates-on-start --pause-isolates-on-exit --trace-service --trace-service-verbose --enable_asserts --enable_type_checks --error_on_bad_type --error_on_bad_override --ignore-unrecognized-flags --packages=E:\b\build\slave\vm-win-debug-x64-be\build\sdk\.packages --enable-vm-service:0 E:\b\build\slave\vm-win-debug-x64-be\build\sdk\runtime\observatory\tests\service\pause_on_start_then_step_test.dart
>testee>out> [+218ms] Isolate pause_on_start_then_step_test.dart$main-460500101 deferring OOB interrupts
>testee>out> [+218ms] Isolate pause_on_start_then_step_test.dart$main-460500101 restoring OOB interrupts
>testee>out> [+281ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+295ms] Isolate pause_on_start_then_step_test.dart$main-460500101 deferring OOB interrupts
>testee>out> [+296ms] Isolate pause_on_start_then_step_test.dart$main-460500101 restoring OOB interrupts
>testee>out> [+296ms] Isolate pause_on_start_then_step_test.dart$main-460500101 deferring OOB interrupts
>testee>out> [+297ms] Isolate pause_on_start_then_step_test.dart$main-460500101 restoring OOB interrupts
>testee>out> [+301ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+305ms] Isolate pause_on_start_then_step_test.dart$main-460500101 deferring OOB interrupts
>testee>out> [+306ms] Isolate pause_on_start_then_step_test.dart$main-460500101 restoring OOB interrupts
>testee>out> [+368ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+370ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+376ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+377ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+388ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+391ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+391ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+391ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+421ms] Isolate pause_on_start_then_step_test.dart$main-460500101 deferring OOB interrupts
>testee>out> [+461ms] Isolate pause_on_start_then_step_test.dart$main-460500101 restoring OOB interrupts
>testee>out> [+483ms] Isolate pause_on_start_then_step_test.dart$main-460500101 deferring OOB interrupts
>testee>out> [+494ms] Isolate pause_on_start_then_step_test.dart$main-460500101 restoring OOB interrupts
>testee>out> [+498ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+534ms] Isolate vm-service restoring OOB interrupts
>testee>out> vm-service: Booting dart:vmservice library.
>testee>out> vm-service: Registering running isolates.
>testee>out> vm-service: Isolate pause_on_start_then_step_test.dart$main-460500101 460500101 registered.
>testee>out> [+571ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+573ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+601ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+601ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+662ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+672ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+673ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+673ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+685ms] Isolate pause_on_start_then_step_test.dart$main-460500101 deferring OOB interrupts
>testee>out> [+685ms] Isolate pause_on_start_then_step_test.dart$main-460500101 restoring OOB interrupts
>testee>out> [+686ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+687ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+689ms] Isolate pause_on_start_then_step_test.dart$main-460500101 deferring OOB interrupts
>testee>out> [+689ms] Isolate pause_on_start_then_step_test.dart$main-460500101 restoring OOB interrupts
>testee>out> [+695ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+696ms] Isolate pause_on_start_then_step_test.dart$main-460500101 deferring OOB interrupts
>testee>out> [+696ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+696ms] Isolate pause_on_start_then_step_test.dart$main-460500101 restoring OOB interrupts
>testee>out> [+716ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+717ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+721ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+729ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+736ms] Isolate pause_on_start_then_step_test.dart$main-460500101 deferring OOB interrupts
>testee>out> [+736ms] Isolate pause_on_start_then_step_test.dart$main-460500101 restoring OOB interrupts
>testee>out> [+737ms] Isolate pause_on_start_then_step_test.dart$main-460500101 deferring OOB interrupts
>testee>out> [+738ms] Isolate pause_on_start_then_step_test.dart$main-460500101 restoring OOB interrupts
>testee>out> [+738ms] Isolate pause_on_start_then_step_test.dart$main-460500101 deferring OOB interrupts
>testee>out> [+799ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+800ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+800ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+800ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+814ms] Isolate pause_on_start_then_step_test.dart$main-460500101 restoring OOB interrupts
>testee>out> [+838ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+846ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+847ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+847ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+847ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+847ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+875ms] Isolate pause_on_start_then_step_test.dart$main-460500101 deferring OOB interrupts
>testee>out> [+877ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+877ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+878ms] Isolate pause_on_start_then_step_test.dart$main-460500101 restoring OOB interrupts
>testee>out> [+879ms] Isolate pause_on_start_then_step_test.dart$main-460500101 deferring OOB interrupts
>testee>out> [+881ms] Isolate pause_on_start_then_step_test.dart$main-460500101 restoring OOB interrupts
>testee>out> [+885ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+886ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+889ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+889ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+892ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+892ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+904ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+905ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+906ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+906ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+943ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+944ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+991ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+991ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1043ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1045ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1045ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1046ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1046ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1048ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1052ms] Isolate pause_on_start_then_step_test.dart$main-460500101 deferring OOB interrupts
>testee>out> [+1069ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1071ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1100ms] Isolate pause_on_start_then_step_test.dart$main-460500101 restoring OOB interrupts
>testee>out> [+1102ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1102ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1121ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1121ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1123ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1154ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1214ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1221ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1221ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1221ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1288ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1289ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1299ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1300ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1423ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1423ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1481ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1482ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1486ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1486ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1498ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1499ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1507ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1507ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1525ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1526ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1528ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1528ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1536ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1537ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1537ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1537ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1538ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1544ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1574ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1576ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1576ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1578ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1588ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1588ms] Isolate vm-service restoring OOB interrupts
** Signaled to run test queries on http://127.0.0.1:52279/
>testee>out> Observatory listening on http://127.0.0.1:52279/
Loading VM...
>testee>out> [+1600ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1600ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1600ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1600ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1600ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1600ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1601ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1601ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1608ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1608ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1608ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1608ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1608ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1608ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1609ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1609ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1611ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1611ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+1612ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+1612ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2156ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2157ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2167ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2168ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2203ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2203ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2204ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2205ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2209ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2210ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2240ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2242ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2246ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2247ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2313ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2316ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2316ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2320ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2361ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2414ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2529ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2530ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2533ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2535ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2535ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2535ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2535ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2536ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2536ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2536ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2537ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2537ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2537ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2538ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2571ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2571ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2581ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2607ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2863ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2869ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2874ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2874ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2874ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2875ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2875ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2875ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2875ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2876ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2892ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2892ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2929ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2930ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2937ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2938ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2972ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2973ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2995ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2995ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2995ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2995ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+2996ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+2996ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3006ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3006ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3006ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3006ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3007ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3007ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3008ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3008ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3008ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3008ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3009ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3009ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3009ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3009ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3009ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3009ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3010ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3010ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3011ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3011ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3012ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3012ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3012ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3012ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3013ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3013ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3013ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3013ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3014ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3014ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3014ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3014ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3017ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3017ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3017ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3017ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3017ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3017ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3019ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3019ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3019ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3019ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3020ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3020ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3020ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3020ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3020ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3020ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3021ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3021ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3021ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3021ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3022ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3022ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3022ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3022ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3023ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3023ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3053ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3053ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3053ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3053ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3129ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3130ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3176ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3182ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3183ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3187ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3230ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3231ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3232ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3232ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3360ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3360ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3360ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3360ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3389ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3390ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3392ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3392ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3408ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3408ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3408ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3408ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3409ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3409ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3409ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3409ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3409ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3409ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3409ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3409ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3409ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3409ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3409ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3409ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3409ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3409ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3409ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3409ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3411ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3411ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3411ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3411ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3411ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3411ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3411ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3411ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3412ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3412ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3412ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3412ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3412ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3412ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3412ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3412ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3412ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3412ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3412ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3412ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3412ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3413ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3413ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3413ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3413ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3413ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3413ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3413ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3413ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3413ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3413ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3413ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3414ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3414ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3414ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3414ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3414ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3414ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3414ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3414ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3414ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3414ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3414ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3415ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3415ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3416ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3416ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3416ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3416ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3416ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3416ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3416ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3416ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3416ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3416ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3416ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3416ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3416ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3416ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3416ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3447ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3448ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3503ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3503ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3517ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3518ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3524ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3524ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3524ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3524ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3606ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3607ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3617ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3623ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3623ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3623ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3681ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3682ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3821ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3821ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3821ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3821ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3821ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3821ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3857ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3857ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3857ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3857ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3906ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3906ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3924ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3924ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3950ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3950ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3952ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3952ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3953ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3953ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3953ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3953ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3953ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3953ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3953ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3953ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3953ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3953ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3954ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3954ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3954ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3954ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3955ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3955ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3955ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3955ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3955ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3955ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3956ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3956ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3956ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3956ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3956ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3956ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3956ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3957ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3957ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3957ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3958ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3958ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3958ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3961ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3961ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3962ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3962ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3962ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3963ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3963ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3963ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3963ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3964ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3964ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+3988ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+3989ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+4010ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+4013ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+4028ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+4029ms] Isolate vm-service restoring OOB interrupts
>testee>out> vm-service: starting stream 'VM'
>testee>out> [+4050ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+4051ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+4077ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+4077ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+4077ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+4077ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+4078ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+4078ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+4078ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+4078ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+4078ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+4078ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+4124ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+4124ms] Isolate vm-service restoring OOB interrupts
>testee>out> vm-service: starting stream 'Isolate'
>testee>out> vm-service: starting stream 'Debug'
>testee>out> vm-service: starting stream '_Graph'
>testee>out> [+4549ms] Isolate vm-service processing service request getVM
>testee>out> [+4549ms] Isolate vm-service processed service request getVM (0us)
Done loading VM
>testee>out> [+5193ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+5193ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+5935ms] Isolate pause_on_start_then_step_test.dart$main-460500101 processing service request getIsolate
>testee>out> [+5941ms] Isolate pause_on_start_then_step_test.dart$main-460500101 processed service request getIsolate (7000us)
>testee>out> [+5942ms] Isolate pause_on_start_then_step_test.dart$main-460500101 deferring OOB interrupts
>testee>out> [+5942ms] Isolate pause_on_start_then_step_test.dart$main-460500101 restoring OOB interrupts
>testee>out> vm-service: Pushing ServiceEvent(isolate='pause_on_start_then_step_test.dart$main-460500101', kind='IsolateRunnable') to stream Isolate
>testee>out> [+5973ms] Isolate pause_on_start_then_step_test.dart$main-460500101 deferring OOB interrupts
>testee>out> [+5975ms] Isolate pause_on_start_then_step_test.dart$main-460500101 restoring OOB interrupts
>testee>out> vm-service: Pushing ServiceEvent(isolate='pause_on_start_then_step_test.dart$main-460500101', kind='PauseStart') to stream Debug
Running pause_on_start_then_step_test.dart [1/1]
Getting stream...
Subscribing...
Subscribed.  Pause event is Instance of 'NoneEvent'
Waiting for pause start event.
Received ServiceEvent(owner='isolates/460500101', kind='PauseStart', time=2017-05-04 18:30:20.694)
Done waiting for pause event.
>testee>out> [+6563ms] Isolate pause_on_start_then_step_test.dart$main-460500101 processing service request getIsolate
>testee>out> [+6566ms] Isolate pause_on_start_then_step_test.dart$main-460500101 processed service request getIsolate (3000us)
Stepping...
Waiting for PauseBreakpoint
>testee>out> [+6903ms] Isolate pause_on_start_then_step_test.dart$main-460500101 processing service request resume
>testee>out> vm-service: Pushing ServiceEvent(isolate='pause_on_start_then_step_test.dart$main-460500101', kind='Resume') to stream Debug
>testee>out> [+6912ms] Isolate pause_on_start_then_step_test.dart$main-460500101 processed service request resume (9000us)
>testee>out> vm-service: Pushing ServiceEvent(isolate='pause_on_start_then_step_test.dart$main-460500101', kind='PauseBreakpoint') to stream Debug
Got Resume
Received PauseBreakpoint
Got PauseBreakpoint
>testee>out> [+7404ms] Isolate vm-service deferring OOB interrupts
>testee>out> [+7404ms] Isolate vm-service restoring OOB interrupts
>testee>out> [+7415ms] Isolate pause_on_start_then_step_test.dart$main-460500101 processing service request getObject
>testee>out> [+7417ms] Isolate pause_on_start_then_step_test.dart$main-460500101 processed service request getObject (2000us)
>testee>out> [+7417ms] Isolate pause_on_start_then_step_test.dart$main-460500101 processing service request getIsolate
>testee>out> [+7426ms] Isolate pause_on_start_then_step_test.dart$main-460500101 processed service request getIsolate (9000us)

Command[vm]: set DART_CONFIGURATION=DebugX64 & out\DebugX64\dart.exe --enable_asserts --enable_type_checks --error_on_bad_type --error_on_bad_override --ignore-unrecognized-flags --packages=E:\b\build\slave\vm-win-debug-x64-be\build\sdk\.packages E:\b\build\slave\vm-win-debug-x64-be\build\sdk\runtime\observatory\tests\service\pause_on_start_then_step_test.dart
Took 0:02:03.504905

Short reproduction command (experimental):
    python tools/test.py --checked -t120 service/pause_on_start_then_step_test

So it seems that it gets stuck after approximately 7 and a half seconds, after which is does nothing.

I cannot reproduce it locally (Linux machine) (despite running the test in a loop ~750 times in 10 threads simultaneously).

DanTup commented 7 years ago

I've got an issue that looks incredibly similar to this when debugging Flutter apps:

https://github.com/flutter/flutter/issues/10615 - Unable to resume execution after hitting breakpoint in Flutter apps https://github.com/Dart-Code/Dart-Code/issues/332 - Observatory connection becomes unresponsive when debugging Flutter apps