I would not consider setting an exit code to be a fancy feature, but I guess we are living on the bleeding edge here :) EDIT: I should have said explicitly in

I would not consider setting an exit code to be a fancy feature, but I guess we are living on the bleeding edge here :) EDIT: I should have said explicitly in my initial comment that I knew about std::process::exit and panic!, but did not consider them to be a clean solution for exiting the program under normal circumstance -- more of an abort() mechanism.