structuredAttrs is enabled

trying https://static.crates.io/crates/hkdf/0.13.0/download
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed
100 167.5k 100 167.5k   0      0  7.84M      0                              0