inputpanel::tst_plugin timeout on QEMU

agent:2019/06/14 07:13:04 build.go:616: Running tests in directory /home/qt/work/qt/qtvirtualkeyboard/tests/auto/inputpanel
agent:2019/06/14 07:13:04 runner.go:72: Generating test results with TESTARGS=-o /home/qt/work/testresults/tests/auto/inputpanel490442810,xml -o -,txt
agent:2019/06/14 07:13:04 build.go:305: [taskset -c 0 make check -j1] 900 900
agent:2019/06/14 07:13:04 build.go:197: /home/qt/work/qt/qtvirtualkeyboard/tests/auto/inputpanel/target_wrapper.sh  ./tst_inputpanel -o /home/qt/work/testresults/tests/auto/inputpanel490442810,xml -o -,txt
agent:2019/06/14 07:13:24 build.go:197: ********* Start testing of inputpanel *********
agent:2019/06/14 07:13:24 build.go:197: Config: Using QtTest library 5.12.3, Qt 5.12.3 (arm64-little_endian-lp64 shared (dynamic) debug build; by GCC 6.4.0)
agent:2019/06/14 07:13:38 build.go:197: PASS   : inputpanel::tst_plugin::initTestCase()
...
agent:2019/06/14 07:28:03 build.go:197: QWARN  : inputpanel::tst_plugin::test_navigationKeyLayoutMirroring(row 1) This plugin does not support raise()
agent:2019/06/14 07:28:03 build.go:197: SKIP   : inputpanel::tst_plugin::test_navigationKeyLayoutMirroring(row 1) Arrow key navigation not enabled
agent:2019/06/14 07:28:03 build.go:197:    Loc: [/home/qt/work/qt/qtvirtualkeyboard/tests/auto/inputpanel/data/tst_inputpanel.qml(795)]
agent:2019/06/14 07:28:03 build.go:197: QWARN  : inputpanel::tst_plugin::test_pinyinInputMethod(row 0) This plugin does not support raise()
agent:2019/06/14 07:28:04 build.go:128: Virtual Memory Total: 6250369024, Free:2048843776, UsedPercent:17.638628%
...
agent:2019/06/14 07:28:05 build.go:246: Killed process: Maximum step duration reached (timeout: 900 seconds)
agent:2019/06/14 07:28:05 build.go:200: Error reading from stdout/err: Timeout after 15m0s: Maximum duration reached
agent:2019/06/14 07:28:05 build.go:521: Executing scheduled instruction 1 of 2 - Upload all core dumps if there are some