Crash in qtquickcontrols2 tests during qt5.git integration in 'dev'

There seems to be a crash in qtquickcontrols tests:

FAIL! : tst_controls::Default::ComboBox::test_mouse() Compared values are not the same
Actual (): 1
Expected (): 0
C:\Users\qt\work\qt\qtquickcontrols2\tests\auto\controls\data\tst_combobox.qml(720) : failure location

jom: C:\Users\qt\work\qt\qtquickcontrols2\tests\auto\controls\default\Makefile.Release [check] Error 2
jom: C:\Users\qt\work\qt\qtquickcontrols2\tests\auto\controls\default\Makefile [release-check] Error 2 agent:2017/09/01 05:24:03 build.go:203: Process finished with error: exit status 2

agent:2017/09/01 05:24:03 build.go:155: Error reading from stdout/err: exit status 2

agent:2017/09/01 05:24:03 agent.go:76: ERROR building: error unmarshalling testlib xml output: 'XML syntax error on line 611: unexpected EOF'. Most likely the test has crashed

Build log:https://testresults.qt.io/coin/api/results/qt/qtquickcontrols2/b523b77a1750b60cb2ffb949f92674ec87e18d82/LinuxUbuntu_16_04x86_64LinuxUbuntu_16_04x86_64GCCqtci-linux-Ubuntu-16.04-x86_64-1-4c33b0DeveloperBuild_OutOfSourceBuild_QtLibInfix_QtNamespace_Documentation/974353fb846aad000ae4f1b6692d31268b3acc58/test_1504243333/testlog.txt.gz

Integration: https://testresults.qt.io/coin/integration/qt/qt5/tasks/1504239044