WPT import https://crrev.com/c/1094556 introduced new failures in external/wpt/css/vendor-imports/mozilla/mozilla-central-reftests/shapes1:

List of new failures:
external/wpt/css/vendor-imports/mozilla/mozilla-central-reftests/shapes1/float-retry-push-image.html [ Failure ]

This import contains upstream changes from 418538eb1cce3ecd931285db697736aa2066d05c to 9d009fc59a8f99e0117b841b7f49094cc690964c:
Sync Mozilla tests as of https://hg.mozilla.org/mozilla-central/rev/874dedd55599e4b87fe37a497a968c079f1cca69 . (#11451): https://github.com/web-platform-tests/wpt/commit/9d009fc59a8f99e0117b841b7f49094cc690964c [affecting this directory]
Sync Mozilla tests as of https://hg.mozilla.org/mozilla-central/rev/062e1553dc91da5b7c58dbaa0b5348b2be0f91f2 . (#11450): https://github.com/web-platform-tests/wpt/commit/639812b9fdc7a95d3066ed098d4650be0c4e1a3a [affecting this directory]