{"ast_node_type":"variable","tokens":[{"end":69,"kind":"keyword","start":0,"text":"let"}]}
                let mk_ptr = move |tcx: TyCtxt<'tcx>, ty: Ty<'tcx>| {
            mir::Rvalue::RawPtr(kind, place) => {
                    Ty::new_ptr(tcx, ty, kind.to_mutbl_lossy())