these 4 derivations will be built:
  /nix/store/kf9gv1jpdvzri7hwrhgambcv1sh5rb30-nixos-system-server-test.drv
  /nix/store/pwv8486fbyc5ivsnp5g3a14fyb7yhfnf-closure-info.drv
  /nix/store/sqfzj74905hxb1w6v2xczqcx7pa86qhq-nixos-test-driver-dyndns.drv
  /nix/store/wb289b6asfwfwl70qxpwdhqvs6xnxbp8-container-test-run-dyndns.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