structuredAttrs is enabled

trying https://static.crates.io/crates/regalloc2/0.15.1/download
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed
100 146.1k 100 146.1k   0      0  3.16M      0                              0