{"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"}"}]}
        } else if !(item.has_name(EXCEPT) || item.has_name(LOADED_FROM_DISK)) {
            cfg = Some(config.contains(&(value, None)));
            tcx.dcx().emit_err(errors::UnknownRustcCleanArgument { span: item.span() });