structuredAttrs is enabled

trying https://static.crates.io/crates/proc-macro-error/1.0.4/download
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed
100  25293 100  25293   0      0  1.36M      0                              0