structuredAttrs is enabled

trying https://static.crates.io/crates/syn/3.0.0/download
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed
100 305.7k 100 305.7k   0      0  3.40M      0                              0