CI failure, reference to unresponsive machine at BHAM
Both "Physics" and "Random" stages of CI tests fail with
$ wget --no-check-certificate https://agentx20.sr.bham.ac.uk:8080/static/scripts/brumsofttes_unsafe_certcheck.sh
Connecting to agentx20.sr.bham.ac.uk:8080 (147.188.32.231:8080)
wget: server returned error: HTTP/1.1 503 Service Unavailable