{"ast_node_type":"variable","tokens":[{"end":95,"kind":"keyword","start":0,"text":"let"}]}
        let mut file = create_dump_file(tcx, "mir", pass_num, pass_name, disambiguator, body)?;
    let _: io::Result<()> = try {
        dump_mir_to_writer(tcx, pass_name, disambiguator, body, &mut file, extra_data, options)?;