structuredAttrs is enabled

trying https://static.crates.io/crates/reqsign-aws-v4/3.0.1/download
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed
100  74421 100  74421   0      0  3.25M      0                              0