EXCEPTION (Exception): Error while loading file "/Users/epriestley/dev/core/lib/phabricator/src/applications/phid/handle/pool/PhabricatorHandleList.php": Return type of PhabricatorHandleList::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice #0 /Users/epriestley/dev/core/lib/arcanist/src/init/lib/PhutilBootloader.php(207): PhutilBootloader->executeInclude('/Users/epriestl...') #1 /Users/epriestley/dev/core/lib/arcanist/src/symbols/PhutilSymbolLoader.php(422): PhutilBootloader->loadLibrarySource('phabricator', 'applications/ph...') #2 /Users/epriestley/dev/core/lib/arcanist/src/symbols/PhutilSymbolLoader.php(277): PhutilSymbolLoader->loadSymbol(Array) #3 /Users/epriestley/dev/core/lib/arcanist/src/__tests__/PhutilLibraryTestCase.php(16): PhutilSymbolLoader->selectAndLoadSymbols() #4 /Users/epriestley/dev/core/lib/arcanist/src/unit/engine/phutil/PhutilTestCase.php(493): PhutilLibraryTestCase->testEverythingImplemented() #5 /Users/epriestley/dev/core/lib/arcanist/src/unit/engine/PhutilUnitTestEngine.php(69): PhutilTestCase->run() #6 /Users/epriestley/dev/core/lib/arcanist/src/unit/engine/ArcanistConfigurationDrivenUnitTestEngine.php(148): PhutilUnitTestEngine->run() #7 /Users/epriestley/dev/core/lib/arcanist/src/workflow/ArcanistUnitWorkflow.php(170): ArcanistConfigurationDrivenUnitTestEngine->run() #8 /Users/epriestley/dev/core/lib/arcanist/src/workflow/ArcanistDiffWorkflow.php(1230): ArcanistUnitWorkflow->run() #9 /Users/epriestley/dev/core/lib/arcanist/src/workflow/ArcanistDiffWorkflow.php(1132): ArcanistDiffWorkflow->runUnit() #10 /Users/epriestley/dev/core/lib/arcanist/src/workflow/ArcanistDiffWorkflow.php(365): ArcanistDiffWorkflow->runLintUnit() #11 /Users/epriestley/dev/core/lib/arcanist/scripts/arcanist.php(419): ArcanistDiffWorkflow->run() #12 {main}