structuredAttrs is enabled

trying https://github.com/ispc/ispc/archive/refs/tags/v1.31.0.tar.gz
  % 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 19.22M   0 19.22M   0      0  6.73M      0           00:02          7.72M
unpacking source archive /build/download.tar.gz