I'm not terribly fond of either option in Rust; however I would encourage the formalization of a protocol for handling non-fatal errors. It's the route Common L

I'm not terribly fond of either option in Rust; however I would encourage the formalization of a protocol for handling non-fatal errors. It's the route Common Lisp went when it inherited the idea from the Multics PL/1 OS. It was a huge win and they chose a very user-friendly (ie: programmer-friendly) design.