Well, in my experience it is possible to claim Level A despite not using a certified compiler. Perhaps not if you're building a civilian airliner and you're pro

Well, in my experience it is possible to claim Level A despite not using a certified compiler. Perhaps not if you're building a civilian airliner and you're probably still gonna have to do some kind of activities to show what goes into the compiler comes out as expected. So although certification may be an ultimate goal, I don't think I'd consider it to be a complete showstopper when it comes to getting Rust airborne and keeping whatever it executes on so. :)