these 6 derivations will be built:
  /nix/store/56mfxwfx0cjngv01vw0lzgga8md8ylrs-nixos-system-server-test.drv
  /nix/store/f29z2rzid61mvham72m1llj4jp1ykk2n-closure-info.drv
  /nix/store/wgqlzjhsnpgy7wyh8xfpm6nnfl1k6p92-run-nixos-vm.drv
  /nix/store/z0lqyxxn79mnkpkfp42wv289glpzpvgz-nixos-vm.drv
  /nix/store/xl8h442p30jyvb2cpy1c59x4hbpbcmrv-nixos-test-driver-index_advisor.drv
  /nix/store/snmb2yamih74x3784cxpq7rg79f2x0zh-vm-test-run-index_advisor.drv