structuredAttrs is enabled

trying https://static.crates.io/crates/matrix-pickle/0.2.3/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   9190 100   9190   0      0  26080      0                              0
100   9190 100   9190   0      0  26076      0                              0
100   9190 100   9190   0      0  26073      0                              0