Q12020 Flaky failing autotest function pull in qaudiooutput

Here is the log from the incident

Coin task #1: http://coin/coin/integration/qt/qtmultimedia/tasks/1583164775

Coin task #2: http://coin/coin/integration/qt/qtmultimedia/tasks/1582659472

Host os version: RHEL_7_6, target os version: RHEL_7_6, GCC compiler

Log #1:

http://coin/coin/logview/qt/qtmultimedia/a76df4032ca063c7db6b5c35d21a29e5a11e6523/LinuxRHEL_7_6x86_64LinuxRHEL_7_6x86_64GCCqtci-linux-RHEL-7.6-x86_64-dba6f3/c79680a26dc3be4cf182221cd8e4f8b9c13dcc03/test_1583164829

********* Start testing of tst_QAudioOutput *********
Config: Using QtTest library 5.14.2, Qt 5.14.2 (x86_64-little_endian-lp64 shared (dynamic) release build; by GCC 5.3.1 20160406 (Red Hat 5.3.1-6))
PASS : tst_QAudioOutput::initTestCase()
PASS : tst_QAudioOutput::pull(Audio File 0)
FAIL! : tst_QAudioOutput::pull(Audio File 1) Compared values are not the same
Loc: [tst_qaudiooutput.cpp(529)]
PASS : tst_QAudioOutput::pull(Audio File 2)
PASS : tst_QAudioOutput::pull(Audio File 3)
PASS : tst_QAudioOutput::pull(Audio File 4)
PASS : tst_QAudioOutput::pull(Audio File 5)
PASS : tst_QAudioOutput::cleanupTestCase()
Totals: 7 passed, 1 failed, 0 skipped, 0 blacklisted, 23273ms
********* Finished testing of tst_QAudioOutput *********

Please also see if this test function fails is somehow related or not. It is happening after the first fail of pull function, and only the first fail of pull function is repeated.

FAIL! : tst_QAudioOutput::pushSuspendResume(Audio File 5) '(audioOutput.state() == QAudio::IdleState)' returned FALSE. (didn't transitions to IdleState when at EOF)Loc: [tst_qaudiooutput.cpp(842)]

External log:

https://testresults.qt.io/coin/logview/qt/qtmultimedia/a76df4032ca063c7db6b5c35d21a29e5a11e6523/LinuxRHEL_7_6x86_64LinuxRHEL_7_6x86_64GCCqtci-linux-RHEL-7.6-x86_64-dba6f3/c79680a26dc3be4cf182221cd8e4f8b9c13dcc03/test_1583164829

The wanted action

• Please delegate this task to a suitable developer
• Fix the autotest flakiness in all affected versions, not just one. 
• Cherry-pick the fix to all relevant branches
• Mark the fix versions to Jira

Guidelines for debugging

Please see the internal page https://intranet.qt.io/display/QTRD/Metrics+Guidelines+for+Grafana+Tool+for+Autotests+with+Issues

How to locate the failed flaky test:

Please open the link to the Grafana dashboard showing the failure history of the test:

https://testresults.qt.io/grafana/d/5GKDJSPZz/02-qt-framework-please-fix-these-flaky-tests-random-fails?orgId=1&from=now-90d&to=now&var-project=qt%2Fqtmultimedia&var-testcase=tests%2Fauto%2Fintegration%2Fqaudiooutput&var-testfunction=pull&var-branch=All&var-inter=24h

Please see the panel List of the recent flaky tests (both passed and failed). Sort it based on the results to see the failed instances. 

Please open the links to the Coin tasks containing the logs. Please see the test section containing state "Error" and open corresponding logs.