structuredAttrs is enabled

trying https://static.crates.io/crates/arrow-ipc/55.2.0/download
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed

  0      0   0      0   0      0      0      0                              0
100 113.3k 100 113.3k   0      0  5.50M      0                              0
100 113.3k 100 113.3k   0      0  5.48M      0                              0
100 113.3k 100 113.3k   0      0  5.46M      0                              0