these 2 derivations will be built:
  /nix/store/b9vf3mca0jwxsrwr72zal1sz9arshmx1-closure-info.drv
  /nix/store/bg1m43pcx1i7jfbp7i37j53xwi8w8x21-check-vars.drv
error: path '/nix/store/mbvlzdbmklzsvh7iih0ifnpxx01ny207-check-vars' is not valid
error: Cannot build '/nix/store/bg1m43pcx1i7jfbp7i37j53xwi8w8x21-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/mbvlzdbmklzsvh7iih0ifnpxx01ny207-check-vars