That is certainly a strange bug! It took me several minutes to wrap my head around, but from if I'm reading correctly, `transmute_obj` shouldn't expect to be passed in a U because `<T as Object<U>>::Output` should be using `Object<U>::Output`, but instead it's using `T::Output`. I need to mess around with this later on my computer because I'd expect that `<T as Object<U>>::Output` accepting `T::Output` means that it would _not_ accept `Object<U>::Output`, and I'm super curious what error it would give if it were passed that instead...

in fact way safer, since it doesn't rely on the unsafe-riddled std::fs!