Probably introduced in #39421. https://github.com/servo/servo/runs/51386032986 ``` OK [expected TIMEOUT] /performance-timeline/not-restored-reasons/performance-navigation-timing-navigation-failure.tentative.window.html FAIL [expected TIMEOUT] subtest: Ensure that navigation failure blocks bfcache and gets recorded. ```