structuredAttrs is enabled

trying https://static.crates.io/crates/unicode-math-class/0.1.0/download
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed
100  15441 100  15441   0      0 464.0k      0                              0