Node selenium jobs appear to be broken since earlier today. Failing with:
unable to obtain stable firefox connection in 60 seconds (127.0.0.1:7055) (Selenium::WebDriver::Error::WebDriverError)
Examples:
https://integration.wikimedia.org/ci/job/mwselenium-quibble-docker/629/console
https://integration.wikimedia.org/ci/job/mwselenium-quibble-docker/628/console