Summary

When running our test suite, after ~3000 tests the program stops with an internal error.

Current behavior

When running our test suite, suddenly below error occurs. There were only some code changes done in the code being tested; it was running on 10.4.1 this morning. Update to 10.4.2 does not help. Here is the complete error:

An error occurred inside PHPUnit.

Message: PHPUnit\Event\Telemetry\HRTime::duration(): Argument #1 ($start) must be of type PHPUnit\Event\Telemetry\HRTime, null given, called in phar:///usr/local/bin/phpunit/phpunit/Logging/JUnit/JunitXmlLogger.php on line 191

Location: phar:///usr/local/bin/phpunit/phpunit/TextUI/TestRunner.php:48

#0 phar:///usr/local/bin/phpunit/phpunit/TextUI/Application.php(144): PHPUnit\TextUI\TestRunner->run()
#1 /usr/local/bin/phpunit(2976): PHPUnit\TextUI\Application->run()
#2 {main}

Caused by: phar:///usr/local/bin/phpunit/phpunit/Event/Value/Telemetry/HRTime.php:54

#0 phar:///usr/local/bin/phpunit/phpunit/Logging/JUnit/JunitXmlLogger.php(191): PHPUnit\Event\Telemetry\HRTime->duration()
#1 phar:///usr/local/bin/phpunit/phpunit/Logging/JUnit/JunitXmlLogger.php(148): PHPUnit\Logging\JUnit\JunitXmlLogger->handleFinish()
#2 phar:///usr/local/bin/phpunit/phpunit/Logging/JUnit/Subscriber/TestFinishedSubscriber.php(29): PHPUnit\Logging\JUnit\JunitXmlLogger->testFinished()
#3 phar:///usr/local/bin/phpunit/phpunit/Event/Dispatcher/DirectDispatcher.php(78): PHPUnit\Logging\JUnit\TestFinishedSubscriber->notify()
#4 phar:///usr/local/bin/phpunit/phpunit/Event/Dispatcher/DeferringDispatcher.php(41): PHPUnit\Event\DirectDispatcher->dispatch()
#5 phar:///usr/local/bin/phpunit/phpunit/Event/Emitter/DispatchingEmitter.php(548): PHPUnit\Event\DeferringDispatcher->dispatch()
#6 phar:///usr/local/bin/phpunit/phpunit/Framework/TestRunner.php(152): PHPUnit\Event\DispatchingEmitter->testFinished()
#7 phar:///usr/local/bin/phpunit/phpunit/Framework/TestCase.php(436): PHPUnit\Framework\TestRunner->run()
#8 phar:///usr/local/bin/phpunit/phpunit/Framework/TestSuite.php(266): PHPUnit\Framework\TestCase->run()
#9 phar:///usr/local/bin/phpunit/phpunit/Framework/TestSuite.php(266): PHPUnit\Framework\TestSuite->run()
#10 phar:///usr/local/bin/phpunit/phpunit/Framework/TestSuite.php(266): PHPUnit\Framework\TestSuite->run()
#11 phar:///usr/local/bin/phpunit/phpunit/TextUI/TestRunner.php(44): PHPUnit\Framework\TestSuite->run()
#12 phar:///usr/local/bin/phpunit/phpunit/TextUI/Application.php(144): PHPUnit\TextUI\TestRunner->run()
#13 /usr/local/bin/phpunit(2976): PHPUnit\TextUI\Application->run()
#14 {main}

How to reproduce

I do not have a way to reproduce this with a small example. However, since it is a type error, I would hope it might be possible to find it while analysing the code. I looked at the code and I see that there is an assert before, but it is most likely disabled.

Expected behavior

PHPUnit runs without internal error