structuredAttrs is enabled

trying https://static.crates.io/crates/boa_engine/0.21.1/download
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed
100 817.5k 100 817.5k   0      0 11.46M      0                              0