structuredAttrs is enabled

trying https://static.crates.io/crates/mqttbytes-core-next/0.33.2/download
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed
100   6446 100   6446   0      0 389.0k      0                              0