structuredAttrs is enabled

trying https://crates.io/api/v1/crates/proc-macro-error-attr3/3.0.1/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   8155 100   8155   0      0  38706      0                              0