flyctl builds logs always throws error

I was trying to get the build logs for our app, but I can’t get it to not error. It always says
Error accepts 1 arg(s), received 0
Things I tried:
flyctl builds logs -a appname
flyctl builds logs ← This was run in the same folder as fly.toml
flyctl builds logs -c . ← This was run in the same folder as fly.toml

The build subcommand is deprecated, builds all run in Docker now so we don’t ever “see” the logs. We should probably make this more obvious.