structuredAttrs is enabled

trying https://crates.io/api/v1/crates/proc-macro-error3/3.0.1/download
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed
  0      0   0      0   0      0      0      0                              0
100  34705 100  34705   0      0  89742      0                              0