structuredAttrs is enabled

trying https://static.crates.io/crates/ar_archive_writer/0.5.2/download
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed
100  85297 100  85297   0      0  3.72M      0                              0