structuredAttrs is enabled

trying https://static.crates.io/crates/proc-macro-error3/3.1.1/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  29595 100  29595   0      0 410.3k      0                              0
100  29595 100  29595   0      0 410.0k      0                              0
100  29595 100  29595   0      0 409.7k      0                              0