@Mastodon Our instance runs under docker. I tried upgrading our instance and had to roll back. It blows up with "ThreadError: can't create Thread: Operation not permitted". As near as I can tell, this version needs docker 20.10.10 minimum, and we're on 20.10.7 (yeah, I know we're way out of date. It's not easy to update a prod instance when you're a small operation).