structuredAttrs is enabled

trying https://static.crates.io/crates/servo_arc/0.4.3/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  17887 100  17887   0      0 305.0k      0                              0
100  17887 100  17887   0      0 304.7k      0                              0
100  17887 100  17887   0      0 304.3k      0                              0