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}.
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
```lines=10
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
```