https://gerrit.wikimedia.org/r/c/mediawiki/core/+/514105 needs to be merged in order for https://gerrit.wikimedia.org/r/c/mediawiki/extensions/PageTriage/+/514108 to go out, which fixes the high-priority T223828: Redirects not appearing in New Page Patrol.
It would seem the failure is unrelated to the code introduced with the patch, but it failed twice in the same place.
Most recent build: https://integration.wikimedia.org/ci/job/wmf-quibble-core-vendor-mysql-php72-docker/2754/console
17:49:49 There were 3 errors: 17:49:49 17:49:49 1) SpecialPageFatalTest::testSpecialPageDoesNotFatal with data set "RunJobs" (SpecialRunJobs Object (...)) 17:49:49 === Logs generated by test case 17:49:49 [wfDebug] [debug] IP: 127.0.0.1 {"private":false} 17:49:49 === 17:49:49 Headers already sent, should send headers earlier than wfHttpError [Called from MediaWiki\HeaderCallback::warnIfHeadersSent in /workspace/src/includes/HeaderCallback.php at line 65] 17:49:49 17:49:49 /workspace/src/includes/debug/MWDebug.php:309 17:49:49 /workspace/src/includes/debug/MWDebug.php:164 17:49:49 /workspace/src/includes/HeaderCallback.php:65 17:49:49 /workspace/src/includes/libs/HttpStatus.php:104 17:49:49 /workspace/src/includes/GlobalFunctions.php:1651 17:49:49 /workspace/src/includes/specials/SpecialRunJobs.php:50 17:49:49 /workspace/src/tests/phpunit/includes/specials/SpecialPageExecutor.php:108 17:49:49 /workspace/src/tests/phpunit/includes/specials/SpecialPageExecutor.php:36 17:49:49 /workspace/src/tests/phpunit/structure/SpecialPageFatalTest.php:34 17:49:49 /workspace/src/tests/phpunit/MediaWikiTestCase.php:427 17:49:49 /workspace/src/maintenance/doMaintenance.php:99 17:49:49 17:49:49 2) SpecialPageFatalTest::testSpecialPageDoesNotFatal with data set "JavaScriptTest" (SpecialJavaScriptTest Object (...)) 17:49:49 === Logs generated by test case 17:49:49 [wfDebug] [debug] IP: 127.0.0.1 {"private":false} 17:49:49 === 17:49:49 Cannot modify header information - headers already sent by (output started at /workspace/src/extensions/Echo/tests/phpunit/ContainmentSetTest.php:75) 17:49:49 17:49:49 /workspace/src/includes/specials/SpecialJavaScriptTest.php:195 17:49:49 /workspace/src/includes/specials/SpecialJavaScriptTest.php:53 17:49:49 /workspace/src/tests/phpunit/includes/specials/SpecialPageExecutor.php:108 17:49:49 /workspace/src/tests/phpunit/includes/specials/SpecialPageExecutor.php:36 17:49:49 /workspace/src/tests/phpunit/structure/SpecialPageFatalTest.php:34 17:49:49 /workspace/src/tests/phpunit/MediaWikiTestCase.php:427 17:49:49 /workspace/src/maintenance/doMaintenance.php:99 17:49:49 17:49:49 3) SpecialPageFatalTest::testSpecialPageDoesNotFatal with data set "MobileDiff" (SpecialMobileDiff Object (...)) 17:49:49 === Logs generated by test case 17:49:49 [wfDebug] [debug] IP: 127.0.0.1 {"private":false} 17:49:49 === 17:49:49 Cannot modify header information - headers already sent by (output started at /workspace/src/extensions/Echo/tests/phpunit/ContainmentSetTest.php:75) 17:49:49 17:49:49 /workspace/src/includes/libs/HttpStatus.php:112 17:49:49 /workspace/src/includes/GlobalFunctions.php:1651 17:49:49 /workspace/src/extensions/MobileFrontend/includes/specials/SpecialMobileDiff.php:41 17:49:49 /workspace/src/extensions/MobileFrontend/includes/specials/SpecialMobileDiff.php:100 17:49:49 /workspace/src/extensions/MobileFrontend/includes/specials/MobileSpecialPage.php:74 17:49:49 /workspace/src/tests/phpunit/includes/specials/SpecialPageExecutor.php:108 17:49:49 /workspace/src/tests/phpunit/includes/specials/SpecialPageExecutor.php:36 17:49:49 /workspace/src/tests/phpunit/structure/SpecialPageFatalTest.php:34 17:49:49 /workspace/src/tests/phpunit/MediaWikiTestCase.php:427 17:49:49 /workspace/src/maintenance/doMaintenance.php:99