As part of https://bugs.webkit.org/show_bug.cgi?id=203291 we added a new WPT test that times out and was marked as skipped. We need to fix the timeout and unskip it.
Marked test as failing as part of https://trac.webkit.org/changeset/251597/webkit
Not sure what to do about this, we actually pass the test but the way it's designed it prevents the WPT test harness from completing and thus the test times out. I'll ask the bot watchers for the best way to keep this being tested without forcing a timeout on the harness.
I raised a WPT issue at https://github.com/web-platform-tests/wpt/issues/20020.
We've since added the support for WPT crash tests.
Indeed, this no longer times out.