{"ast_node_type":"variable","tokens":[{"end":82,"kind":"keyword","start":0,"text":"let"}]}
            let drop_is_single_call_in_arm = is_single_call_in_arm(cx, arg, expr);
            let is_copy = cx.type_is_copy_modulo_regions(arg_ty);
            let let_underscore_ignore_sugg = || {