{"ast_node_type":"variable","tokens":[{"end":71,"kind":"keyword","start":0,"text":"let"}]}
                    let ptr_ty = Ty::new_ptr(self.tcx, base_ty, mutbl);
                ty::Ref(_, base_ty, mutbl) => {
                    self.demand_coerce(expr, ty, ptr_ty, None, AllowTwoPhase::No);