these 2 derivations will be built:
  /nix/store/r15nbcv5wg0q8abkbdjhzx9kyadjs28j-closure-info.drv
  /nix/store/3yk9cll2gvgix4zcavlvsdk911khxc9j-check-vars.drv
error: path '/nix/store/qnpql8mlx1fijf2i68h75hra1bx7092w-check-vars' is not valid
error: Cannot build '/nix/store/3yk9cll2gvgix4zcavlvsdk911khxc9j-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/qnpql8mlx1fijf2i68h75hra1bx7092w-check-vars