these 4 derivations will be built:
  /nix/store/4zm0k0zm1x4xpq9cafxss8nsnnj1fhbz-nixos-system-machine-test.drv
  /nix/store/sv5zn32ikqqxlr060d2xc7zimdg4phgh-closure-info.drv
  /nix/store/gj33krljj96y3dzk57dpj6b1af2blwvn-nixos-test-driver-localbackup.drv
  /nix/store/76fylb6rkqphmhnbcg3fhrzdprb25jis-container-test-run-localbackup.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
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy