Top flaky test: tst_QTextToSpeech::synthesize

Test case: tst_QTextToSpeech::synthesize has failed 4 times, crashed 0 and was flaky 26 times last week.

The test has blocked around 4 Gerrit changes past week

Coin log excerpt from failed run:
agent:2025/04/01 00:53:04 build.go:404: FAIL! : tst_QTextToSpeech::synthesize(darwin:text) 'finished' returned FALSE. ()
agent:2025/04/01 00:53:04 build.go:404: Loc: [/Users/qt/work/qt/qtspeech/tests/auto/qtexttospeech/tst_qtexttospeech.cpp(955)]
...

Full log at : coin log
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Information about the Qt test system: qt test execution information