{"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"Ok(mut"}]}
                Ok(mut parser) => match parser.parse_meta_item(AllowLeadingUnsafe::No) {
            match new_parser_from_source_str(&psess, filename, s.to_string()) {
                    Ok(meta_item) if parser.token == token::Eof => {