When a WPT test case has console output, and that console output has a URL for a file served by the WPT test harness, the URL in GTK test output has the origin http://web-platform.test:8800 — whereas, in the test output for other platforms (and locally) the URL has the origin http://localhost:8800. See https://ews-build.s3-us-west-2.amazonaws.com/GTK-WK2-Tests-EWS/e9ef714b-24144-stress-mode/imported/w3c/web-platform-tests/html/semantics/document-metadata/the-link-element/stylesheet-bad-mime-type-pretty-diff.html
I think this is expected, we use the wpt localhost aliases.
(In reply to Carlos Garcia Campos from comment #1) > I think this is expected, we use the wpt localhost aliases. Yeah, Fujii Hironori subsequently pointed me to https://bugs.webkit.org/show_bug.cgi?id=243428 — so perhaps this bug can just be closed