EXCEPTION (InvalidArgumentException): Argument 1 passed to ipull() must be of the type array, null given, called in /core/data/drydock/workingcopy-80/repo/phabricator/src/applications/metamta/storage/__tests__/PhabricatorMetaMTAMailTestCase.php on line 199 and defined #0 /core/data/drydock/workingcopy-80/repo/libphutil/src/utils/utils.php(262): PhutilErrorHandler::handleError(4096, 'Argument 1 pass...', '/core/data/dryd...', 262, Array) #1 /core/data/drydock/workingcopy-80/repo/phabricator/src/applications/metamta/storage/__tests__/PhabricatorMetaMTAMailTestCase.php(199): ipull(NULL, 1, 0) #2 /core/data/drydock/workingcopy-80/repo/phabricator/src/applications/metamta/storage/__tests__/PhabricatorMetaMTAMailTestCase.php(175): PhabricatorMetaMTAMailTestCase->runThreadIDHeadersWithConfiguration(true, true) #3 [internal function]: PhabricatorMetaMTAMailTestCase->testThreadIDHeaders() #4 /core/data/drydock/workingcopy-80/repo/arcanist/src/unit/engine/phutil/PhutilTestCase.php(492): call_user_func_array(Array, Array) #5 /core/data/drydock/workingcopy-80/repo/arcanist/src/unit/engine/PhutilUnitTestEngine.php(69): PhutilTestCase->run() #6 /core/data/drydock/workingcopy-80/repo/arcanist/src/unit/engine/ArcanistConfigurationDrivenUnitTestEngine.php(148): PhutilUnitTestEngine->run() #7 /core/data/drydock/workingcopy-80/repo/arcanist/src/workflow/ArcanistUnitWorkflow.php(170): ArcanistConfigurationDrivenUnitTestEngine->run() #8 /core/data/drydock/workingcopy-80/repo/arcanist/scripts/arcanist.php(394): ArcanistUnitWorkflow->run() #9 {main}