structuredAttrs is enabled

trying https://static.crates.io/crates/sketches-ddsketch/0.3.1/download
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed
100  15792 100  15792   0      0 460.1k      0                              0