We don't know if it's still failing, but there was no clear fix committed recently, so it's likely that the test is too fragile:
Patch affected: https://gerrit.wikimedia.org/r/#/c/mediawiki/extensions/FileImporter/+/514438/
Log: https://integration.wikimedia.org/ci/job/quibble-vendor-mysql-php70-docker/22340/consoleFull
14:25:30 Failed asserting that two strings are equal. 14:25:30 --- Expected 14:25:30 +++ Actual 14:25:30 @@ @@ 14:25:30 -'(3)' 14:25:30 +'19)' 14:25:30 14:25:30 /workspace/src/extensions/GrowthExperiments/tests/phpunit/HelpModuleQuestionPosterTest.php:117 14:25:30 /workspace/src/tests/phpunit/MediaWikiTestCase.php:427 14:25:30 /workspace/src/maintenance/doMaintenance.php:99