these 3 derivations will be built:
  /nix/store/21yjgvd3kqx1k19wx1g3qxpc91l0f1ya-nixos-test-driver-1.1.drv
  /nix/store/bjikx940xlbb6ypcddv0pschyh9ip15d-nixos-test-driver-yggdrasil.drv
  /nix/store/07shdfjaqcl0high2dpycda69g603xv2-vm-test-run-yggdrasil.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy