Since 5-6 hours ago, the wmf-quibble-vendor-mysql-hhvm-docker job is failing for every submission due to the same test, see for instance here:
19:28:19 ext.cx.publish 19:28:19 ✖ Publishing with Captcha handling 19:28:19 27 01 2019 18:28:19.199:DEBUG [middleware:source-files]: Requesting /extensions/ContentTranslation/tests/qunit/data/draft-sample-1.html / 19:28:19 27 01 2019 18:28:19.199:DEBUG [middleware:source-files]: Fetching /extensions/ContentTranslation/tests/qunit/data/draft-sample-1.html 19:28:19 27 01 2019 18:28:19.200:DEBUG [proxy]: proxying request - /extensions/ContentTranslation/tests/qunit/data/draft-sample-1.html to 127.0.0.1:9412
and then below
19:28:30 FAILED TESTS: 19:28:30 ext.cx.publish 19:28:30 ✖ Publishing with Captcha handling 19:28:30 HeadlessChrome 0.0.0 (Linux 0.0.0) 19:28:30 Test took longer than 60000ms; test timed out. 19:28:30 at node_modules/qunit/qunit/qunit.js:3582:7
This should be addressed ASAP (at least by disabling the test per standard practice), due to its impact.