these 11 derivations will be built:
  /nix/store/1bx135v5inyrxm0v05m9yl2332pbpj4n-unit-echo.service.drv
  /nix/store/vhxhf555zcwrvixsl30jrwpkis3ylglk-system-units.drv
  /nix/store/i9v2p112qf17b2q4s0l3sn3s0isf92vp-etc.drv
  /nix/store/650hwj6wbdyj244jlin59nmqbajvmsmm-activate.drv
  /nix/store/q1r0jnydi7ysskpgjnrirywsjqvzwdld-nixos-system-machine-test.drv
  /nix/store/q00fvshvy8b49w61g40ic90m9dyzalfx-closure-info.drv
  /nix/store/mqglych6ad8sa1bk92z3ixb1s2pkrq0n-run-nixos-vm.drv
  /nix/store/hv4aclfyqii4gdhza1d63mk7zbbyfdp4-nixos-vm.drv
  /nix/store/xhdkih0yirsfkj6i30v95izkb6hg6vv8-driverConfiguration.json.drv
  /nix/store/c60mnvlfjbbyvcrskkvz109npdnbhhkv-nixos-test-driver-systemd-escaping.drv
  /nix/store/frn0d923g6zivf7jkm9shf377aww87al-vm-test-run-systemd-escaping.drv