{"ast_node_type":"variable","tokens":[{"end":69,"kind":"keyword","start":0,"text":"let"}]}
        let archive_tmpfile = File::create_new(&archive_tmpfile_path)
        let archive_tmpfile_path = archive_tmpdir.path().join("tmp.a");
            .map_err(|err| io_error_context("couldn't create the temp file", err))?;