these 7 derivations will be built:
  /nix/store/a5a85m83ivn4g0zx2x1z1dnmd6x2w3x5-nixos-system-server-test.drv
  /nix/store/rg35xic92v4dpjv224vswyv3s10zp06f-nixos-system-server-test.drv
  /nix/store/ip24zlc93nbwpp508x8b63f5pn1y74z3-closure-info.drv
  /nix/store/05mjqzw2wa7zacb8hm97zpjrjqqbifxq-run-nixos-vm.drv
  /nix/store/kr1cmi4kcm50q6a7p21yi5r66ghcqp9s-nixos-vm.drv
  /nix/store/qmd0ffk0mzfxx44kabdrx7r7lsv49ykz-nixos-test-driver-index_advisor.drv
  /nix/store/na8sddrlvwpvfsmi8lgkfiad4c4fr4w8-vm-test-run-index_advisor.drv