5s is too short, one of our CI CentOS 7 machines fails on this, @MylesBorins noted that it regularly happens when he's doing releases. I don't know why this machine has problems (I'm updating it and restarting it atm) with a 5s timeout but it does.

Confirmed on that machine that extending the timeout gets it through doc-only.

Is 30s too much? The timeout is there to handle the no-internet case.