If I am reading this correctly, it looks an instance on fly.io is failing to build the Docker container. Hard to say, since there really isn’t a helpful error message. :-/
I looked at this builder, it looks like it’s crashing the Docker Daemon somehow. If you run fly machine status e148e03b945892 you’ll see exit code 138, which is super strange.
Can you try fly deploy --local-only and see if it works better?
I had an EOF issue when I deleted an app from the platform with a name like “myterribleapp” and then recreated another app but used exactly the same name again “myterribleapp”. This causes some confusion in the ip lookups or something.
When I used a unique name the eof error went away. This may not relate you but popping in case it solves an EOF error for anyone else.