these 7 derivations will be built:
  /nix/store/0w6csxnfgmijxy88dzbwdah0336yqcb7-system-units.drv
  /nix/store/685glbl0b4kq7lg1xs31ijhbrg0dagrh-etc.drv
  /nix/store/2cp0qiivgn1mv3hnwmwb1qpphiiq6mia-activate.drv
  /nix/store/lhy0mmx68rr7yscz5cd6hr0i7hc54yhw-nixos-system-server-test.drv
  /nix/store/55d2phj5qgzyxpn3nnnalqxpxikawm2n-closure-info.drv
  /nix/store/hj0853sjb8q89mlyn7wn7iby79cp8k24-nixos-test-driver-dyndns.drv
  /nix/store/74nz6693k7m5ma5xpyxq9z1bzv44zwpl-container-test-run-dyndns.drv