Test tst_selftests:"crashes old stdout txt" does not work on QEMU

./tst_selftests runSubTest:"crashes old stdout txt"
********* Start testing of tst_Selftests *********
Config: Using QtTest library 5.11.3, Qt 5.11.3 (arm-little_endian-ilp32-eabi-hardfloat shared (dynamic) debug build; by GCC 6.3.0)
PASS   : tst_Selftests::initTestCase()
FAIL!  : tst_Selftests::runSubTest(crashes old stdout txt) 'output == expected' returned FALSE. (Mismatch at line 4 (stdout txt, expected_crashes.txt):
'QFATAL : tst_Crashes::crash() Received signal 11'
 !=
'FAIL!  : tst_Crashes::crash() Caught unhandled exception')
   Loc: [../tst_selftests.cpp(898)]
PASS   : tst_Selftests::cleanupTestCase()
Totals: 2 passed, 1 failed, 0 skipped, 0 blacklisted, 578ms
********* Finished testing of tst_Selftests *********

crashes/crashes 
********* Start testing of tst_Crashes *********
Config: Using QtTest library 5.11.3, Qt 5.11.3 (arm64-little_endian-lp64 shared (dynamic) debug build; by GCC 6.3.0)
PASS   : tst_Crashes::initTestCase()=== Received signal at function time: 4ms, total time: 32ms, dumping stack ===
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Attaching to process 2904
(gdb) === End of stack trace ===
qemu: uncaught target signal 4 (Illegal instruction) - core dumped
Illegal instruction (core dumped)