tst_QQuickFramebufferObject::testThatStuffWorks(green, !aa, 80x80) crashed on osx 10.11

agent:2018/03/28 11:32:17 build.go:262: [make check -j1] 900 900
/Users/qt/work/qt/qtdeclarative/tests/auto/quick/qquickframebufferobject/target_wrapper.sh  ./tst_qquickframebufferobject -o /Users/qt/work/testresults/tests/auto/quick/qquickframebufferobject385080185,xml -o -,txt
********* Start testing of tst_QQuickFramebufferObject *********
Config: Using QtTest library 5.12.0, Qt 5.12.0 (x86_64-little_endian-lp64 shared (dynamic) release build; by Clang 8.0.0 (clang-800.0.42.1) (Apple))
PASS   : tst_QQuickFramebufferObject::initTestCase()
PASS   : tst_QQuickFramebufferObject::testThatStuffWorks(red, !aa, item-size)

========= Received signal, dumping stack ==============
(lldb) process attach --pid 15773
Process 15773 stopped
* thread #1: tid = 0xf6b1, 0x00007fff8c23f59a libsystem_kernel.dylib`__wait4_nocancel + 10, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
    frame #0: 0x00007fff8c23f59a libsystem_kernel.dylib`__wait4_nocancel + 10
libsystem_kernel.dylib`__wait4_nocancel:
->  0x7fff8c23f59a <+10>: jae    0x7fff8c23f5a4            ; <+20>
    0x7fff8c23f59c <+12>: movq   %rax, %rdi
    0x7fff8c23f59f <+15>: jmp    0x7fff8c2397cd            ; cerror_nocancel
    0x7fff8c23f5a4 <+20>: retq   

Executable module set to "/Users/qt/work/qt/qtdeclarative/tests/auto/quick/qquickframebufferobject/tst_qquickframebufferobject".
Architecture set to: x86_64-apple-macosx.
(lldb) bt all
* thread #1: tid = 0xf6b1, 0x00007fff8c23f59a libsystem_kernel.dylib`__wait4_nocancel + 10, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
  * frame #0: 0x00007fff8c23f59a libsystem_kernel.dylib`__wait4_nocancel + 10
    frame #1: 0x00007fff94823fd5 libsystem_c.dylib`system + 458
    frame #2: 0x000000010f709974 QtTest`___lldb_unnamed_symbol73$$QtTest + 164
    frame #3: 0x000000010f709887 QtTest`___lldb_unnamed_symbol72$$QtTest + 199
    frame #4: 0x00007fff9b6d452a libsystem_platform.dylib`_sigtramp + 26
    frame #5: 0x000000010e329c48 QtQuick`___lldb_unnamed_symbol2174$$QtQuick + 312
    frame #6: 0x000000010e38c20c QtQuick`TestNamespace::QQuickWindow::grabWindow() + 508
    frame #7: 0x000000010e250d15 tst_qquickframebufferobject`tst_QQuickFramebufferObject::testThatStuffWorks() + 677
    frame #8: 0x000000010edb8883 QtCore`TestNamespace::QMetaMethod::invoke(TestNamespace::QObject*, TestNamespace::Qt::ConnectionType, TestNamespace::QGenericReturnArgument, TestNamespace::QGenericArgument, TestNamespace::QGenericArgument, TestNamespace::QGenericArgument, TestNamespace::QGenericArgument, TestNamespace::QGenericArgument, TestNamespace::QGenericArgument, TestNamespace::QGenericArgument, TestNamespace::QGenericArgument, TestNamespace::QGenericArgument, TestNamespace::QGenericArgument) const + 1283
    frame #9: 0x000000010f707646 QtTest`___lldb_unnamed_symbol64$$QtTest + 1158
    frame #10: 0x000000010f70849e QtTest`___lldb_unnamed_symbol66$$QtTest + 782
    frame #11: 0x000000010f709424 QtTest`___lldb_unnamed_symbol70$$QtTest + 1060
    frame #12: 0x000000010f70a0f4 QtTest`TestNamespace::QTest::qRun() + 692
    frame #13: 0x000000010f709be0 QtTest`TestNamespace::QTest::qExec(TestNamespace::QObject*, int, char**) + 16
    frame #14: 0x000000010e252f8a tst_qquickframebufferobject`main + 122
    frame #15: 0x00007fff886e05ad libdyld.dylib`start + 1
    frame #16: 0x00007fff886e05ad libdyld.dylib`start + 1

  thread #2: tid = 0xf6b2, 0x00007fff8c23f5e2 libsystem_kernel.dylib`__workq_kernreturn + 10
    frame #0: 0x00007fff8c23f5e2 libsystem_kernel.dylib`__workq_kernreturn + 10
    frame #1: 0x00007fff9ae53578 libsystem_pthread.dylib`_pthread_wqthread + 1283
    frame #2: 0x00007fff9ae51341 libsystem_pthread.dylib`start_wqthread + 13

  thread #3: tid = 0xf6b3, 0x00007fff8c23fefa libsystem_kernel.dylib`kevent_qos + 10, queue = 'com.apple.libdispatch-manager'
    frame #0: 0x00007fff8c23fefa libsystem_kernel.dylib`kevent_qos + 10
    frame #1: 0x00007fff930a7165 libdispatch.dylib`_dispatch_mgr_invoke + 216
    frame #2: 0x00007fff930a6dcd libdispatch.dylib`_dispatch_mgr_thread + 52

  thread #4: tid = 0xf6b4, 0x00007fff8c23f5e2 libsystem_kernel.dylib`__workq_kernreturn + 10
    frame #0: 0x00007fff8c23f5e2 libsystem_kernel.dylib`__workq_kernreturn + 10
    frame #1: 0x00007fff9ae53578 libsystem_pthread.dylib`_pthread_wqthread + 1283
    frame #2: 0x00007fff9ae51341 libsystem_pthread.dylib`start_wqthread + 13

  thread #5: tid = 0xf6b5, 0x00007fff8c23f5e2 libsystem_kernel.dylib`__workq_kernreturn + 10
    frame #0: 0x00007fff8c23f5e2 libsystem_kernel.dylib`__workq_kernreturn + 10
    frame #1: 0x00007fff9ae53578 libsystem_pthread.dylib`_pthread_wqthread + 1283
    frame #2: 0x00007fff9ae51341 libsystem_pthread.dylib`start_wqthread + 13

  thread #6: tid = 0xf6b8, 0x00007fff8c23f5e2 libsystem_kernel.dylib`__workq_kernreturn + 10
    frame #0: 0x00007fff8c23f5e2 libsystem_kernel.dylib`__workq_kernreturn + 10
    frame #1: 0x00007fff9ae53578 libsystem_pthread.dylib`_pthread_wqthread + 1283
    frame #2: 0x00007fff9ae51341 libsystem_pthread.dylib`start_wqthread + 13

  thread #7: tid = 0xf6b9, 0x00007fff8c23f5e2 libsystem_kernel.dylib`__workq_kernreturn + 10
    frame #0: 0x00007fff8c23f5e2 libsystem_kernel.dylib`__workq_kernreturn + 10
    frame #1: 0x00007fff9ae53578 libsystem_pthread.dylib`_pthread_wqthread + 1283
    frame #2: 0x00007fff9ae51341 libsystem_pthread.dylib`start_wqthread + 13

  thread #8: tid = 0xf6bb, 0x00007fff8c23edb6 libsystem_kernel.dylib`__psynch_cvwait + 10, name = 'QThread'
    frame #0: 0x00007fff8c23edb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff9ae54728 libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x000000010ebf380d QtCore`___lldb_unnamed_symbol319$$QtCore + 301
    frame #3: 0x000000010ebf350e QtCore`___lldb_unnamed_symbol318$$QtCore + 94
    frame #4: 0x000000010ebf348d QtCore`TestNamespace::QWaitCondition::wait(TestNamespace::QMutex*, TestNamespace::QDeadlineTimer) + 173
    frame #5: 0x000000010ebf33d3 QtCore`TestNamespace::QWaitCondition::wait(TestNamespace::QMutex*, unsigned long) + 83
    frame #6: 0x000000010f70f2f6 QtTest`___lldb_unnamed_symbol86$$QtTest + 70
    frame #7: 0x000000010ebf1e57 QtCore`___lldb_unnamed_symbol309$$QtCore + 359
    frame #8: 0x00007fff9ae5399d libsystem_pthread.dylib`_pthread_body + 131
    frame #9: 0x00007fff9ae5391a libsystem_pthread.dylib`_pthread_start + 168
    frame #10: 0x00007fff9ae51351 libsystem_pthread.dylib`thread_start + 13

  thread #9: tid = 0xf6be, 0x00007fff8c238f72 libsystem_kernel.dylib`mach_msg_trap + 10, name = 'com.apple.NSEventThread'
    frame #0: 0x00007fff8c238f72 libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8c2383b3 libsystem_kernel.dylib`mach_msg + 55
    frame #2: 0x00007fff9de56124 CoreFoundation`__CFRunLoopServiceMachPort + 212
    frame #3: 0x00007fff9de555ec CoreFoundation`__CFRunLoopRun + 1356
    frame #4: 0x00007fff9de54e38 CoreFoundation`CFRunLoopRunSpecific + 296
    frame #5: 0x00007fff8c520d95 AppKit`_NSEventThread + 149
    frame #6: 0x00007fff9ae5399d libsystem_pthread.dylib`_pthread_body + 131
    frame #7: 0x00007fff9ae5391a libsystem_pthread.dylib`_pthread_start + 168
    frame #8: 0x00007fff9ae51351 libsystem_pthread.dylib`thread_start + 13

  thread #10: tid = 0xf6bf, 0x00007fff8c2402a2 libsystem_kernel.dylib`poll + 10, name = 'QQmlThread'
    frame #0: 0x00007fff8c2402a2 libsystem_kernel.dylib`poll + 10
    frame #1: 0x000000010ee05020 QtCore`TestNamespace::qt_safe_poll(pollfd*, unsigned int, timespec const*) + 544
    frame #2: 0x000000010ee066a7 QtCore`TestNamespace::QEventDispatcherUNIX::processEvents(TestNamespace::QFlags<TestNamespace::QEventLoop::ProcessEventsFlag>) + 871
    frame #3: 0x000000010eda9c61 QtCore`TestNamespace::QEventLoop::exec(TestNamespace::QFlags<TestNamespace::QEventLoop::ProcessEventsFlag>) + 417
    frame #4: 0x000000010ebe8573 QtCore`TestNamespace::QThread::exec() + 115
    frame #5: 0x000000010e8d4449 QtQml`___lldb_unnamed_symbol4844$$QtQml + 57
    frame #6: 0x000000010ebf1e57 QtCore`___lldb_unnamed_symbol309$$QtCore + 359
    frame #7: 0x00007fff9ae5399d libsystem_pthread.dylib`_pthread_body + 131
    frame #8: 0x00007fff9ae5391a libsystem_pthread.dylib`_pthread_start + 168
    frame #9: 0x00007fff9ae51351 libsystem_pthread.dylib`thread_start + 13
(lldb) quit
========= End of stack trace ==============
QFATAL : tst_QQuickFramebufferObject::testThatStuffWorks(green, !aa, 80x80) Received signal 11
         Function time: 293ms Total time: 294ms
FAIL!  : tst_QQuickFramebufferObject::testThatStuffWorks(green, !aa, 80x80) Received a fatal error.
   Loc: [Unknown file(0)]
Totals: 2 passed, 1 failed, 0 skipped, 0 blacklisted, 11843ms
********* Finished testing of tst_QQuickFramebufferObject *********
make: *** [check] Abort trap: 6