As read in quote given by GP, `autofree` partially uses a GC. And is WIP. (Although was supposedly production-ready 5+ years ago.)

Reading "Memory safe; No garbage collector, no manual memory management" on Rue homepage made me think of V for this very reason. Many think is trivial to do it and Rust has been in wrong for 15 years with its "overcomplicated" borrow checking. It isn't.