tst_qquickwindow crashes

PASS   : tst_qquickwindow::animatingSignal()
PASS   : tst_qquickwindow::contentItemSize()

========= Received signal, dumping stack ==============
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Attaching to process 9504
[New LWP 9505]
[New LWP 9506]
[New LWP 9507]
[New LWP 9508]
[New LWP 9509]
[New LWP 9510]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".

agent:2018/02/26 13:51:08 build.go:202: Killed process after timeout (total time)
agent:2018/02/26 13:51:08 build.go:383: Executing scheduled instruction 1 of 2 - Upload all core dumps if there are some
agent:2018/02/26 13:51:08 build.go:385: 
agent:2018/02/26 13:51:08 build.go:383: Executing scheduled instruction 2 of 2 - Upload test results
agent:2018/02/26 13:51:08 storageclient.go:509: Collecting test results, archiving and uploading them
agent:2018/02/26 13:51:08 build.go:139: Error reading from stdout/err: Timeout after 15m0s: Maximum duration reached
agent:2018/02/26 13:51:08 result.go:155: Collecting 122 test results ...
agent:2018/02/26 13:51:08 build.go:385: 
agent:2018/02/26 13:51:08 agent.go:181: Test failed
agent:2018/02/26 13:51:08 agent.go:79: ERROR building: Timeout after 15m0s: Maximum duration reached