structuredAttrs is enabled

trying https://github.com/NixOS/nix-eval-jobs/archive/55e658518ae417cf26f36643fcfdebe5c5db17aa.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
  0      0   0      0   0      0      0      0                              0
  0      0   0      0   0      0      0      0                              0

  0      0   0      0   0      0      0      0                              0
100  70739   0  70739   0      0 137.4k      0                              0
100  70739   0  70739   0      0 137.4k      0                              0
100  70739   0  70739   0      0 137.4k      0                              0
unpacking source archive /build/download.tar.gz