these 9 derivations will be built:
  /nix/store/0v1mcqxmk2qwl1wj2jqdh77vkz5jnc1y-user-units.drv
  /nix/store/vp0cgj2a3hdbnps2jj99f1s94mp88rky-system-units.drv
  /nix/store/c9xq8v32gfgim4zfdjww13i27wapknhh-etc.drv
  /nix/store/xibia60i4dj35hbi6hvv3kn7ai1n0kv3-activate.drv
  /nix/store/5b3walmyljrnddg1myblcdgcy92c8mpr-nixos-system-machine-test.drv
  /nix/store/7bc7m6d9h35248q4fjgqlwfjqz1pifjx-testScript.drv
  /nix/store/vi1n9fjp0wlx3ardj58zswnpgmvf7qwq-closure-info.drv
  /nix/store/ar9prs890dm0a1ys54ax61b8a930is4i-nixos-test-driver-test-extra-python-packages.drv
  /nix/store/hyc9mn1qmg8a6a8fnzv5zgw4z40p1isw-container-test-run-test-extra-python-packages.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy