PHPUnit 11.5.24 introduced separate logic to let the test fail on warnings thrown by PHPUnit itself (i.e. not via a trigger_error() call). Very similar to the logic for PHPUnit own deeprecations.
Not setting the attribute leads to PHPUnit warnings not being reported nor fail the test runs.
Add the failOnPhpunitWarning="true" attribute to thePHPUnit xml configuration file.
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11.0 🔥
phpunit
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