LinuxQEMUarm64: tst_qfloat16::qNan() frequently fails: Compared values are not the same

gent:2019/05/14 11:09:42 build.go:197: ********* Start testing of tst_qfloat16 *********
agent:2019/05/14 11:09:42 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:2019/05/14 11:09:42 build.go:197: PASS   : tst_qfloat16::initTestCase()
agent:2019/05/14 11:09:42 build.go:197: FAIL!  : tst_qfloat16::qNan() Compared values are not the same
agent:2019/05/14 11:09:42 build.go:197:    Loc: [tst_qfloat16.cpp(175)]
agent:2019/05/14 11:09:42 build.go:197: PASS   : tst_qfloat16::cleanupTestCase()
agent:2019/05/14 11:09:42 build.go:197: Totals: 2 passed, 1 failed, 0 skipped, 0 blacklisted, 26ms
agent:2019/05/14 11:09:42 build.go:197: ********* Finished testing of tst_qfloat16 *********
agent:2019/05/14 11:09:42 build.go:197: Makefile:313: recipe for target 'check' failed
agent:2019/05/14 11:09:42 build.go:197: make: *** [check] Error 1
agent:2019/05/14 11:09:42 build.go:230: Process finished with error: exit status 2
agent:2019/05/14 11:09:42 build.go:521: Executing scheduled instruction 1 of 2 - Upload all core dumps