EWS reports a failure on gtk-wk2 bots (and only these bots) for the named test. When checking results I always get the following XML NoSuchKey error as output: This XML file does not appear to have any style information associated with it. The document tree is shown below. <Error> <Code>NoSuchKey</Code> <Message>The specified key does not exist.</Message> <Key> GTK-WK2-Tests-EWS/2716071d-32952/imported/w3c/web-platform-tests/fetch/private-network-access/iframe.tentative.window.html-actual.txt </Key> <RequestId>TAW81RSF1EG5V5DN</RequestId> <HostId> +cYRMSDrRE3gMtwiEdbtkFVLVZBlSuBMQTeOsGOavxvrqgaHrc2NjgNvMZgLwFg9W/qy3iM5DjU= </HostId> </Error> (see https://ews-build.s3-us-west-2.amazonaws.com/GTK-WK2-Tests-EWS/2716071d-32952/results.html for example)