{"ast_node_type":"variable","tokens":[{"end":82,"kind":"keyword","start":0,"text":"let"}]}
                let abi = self.tcx.fn_sig(def_id).skip_binder().skip_binder().abi;
            ty::FnDef(def_id, _) => {
                self.check_call_abi(abi, call_expr.span);