Tinfoil hat mode: a competitor wants to exploit copy.fail on some ubuntu servers, and is DDoSing canonical so that they can't update and thus patch the vuln

Noticed it because snap didn't work, snap has its own status page just fyi: https://status.snapcraft.io/

I like to imagine it's returning a 500 error response asking you to email rhonda@ubuntu.com

This seems to be pretty targeted, and with the services affected like livepatch and such this could indeed be an actor DDoSing to avoid patches rolling out for copy.fail

While the timing with the copy.fail patches mentioned by a few comments here seems suspicious indeed, I have seen this repeating over the last few weeks: packages.ubuntu.com was hardly reachable on some days, causing apt-get to take forever to update the system. They have been struggling hard recently, it seems. Best of luck to the people having to deal with this mess on a holiday!