1. An exception is a recoverable error, that's the entire point, that's what catching an exception is.

2. Unlike Go's, rust's panics do not actually, universally, get "propagated up the call stack until they reach a "catch point", where they can be handled by the programmer". There's a compiler flag which can be "unwind" or "abort". In the former case (the default), panics can be caught and recovered from. In the latter case, the program gets hard-stopped on the spot.