these 4 derivations will be built:
  /nix/store/awj8r8zlj5ghvviffks3rpf0pj11j51g-nixos-system-server-test.drv
  /nix/store/wa8k76fcfvm39rnsqilydk73g5zs6m2j-closure-info.drv
  /nix/store/wrra9qlgi1vssiyblvd156bzl5kvb42c-nixos-test-driver-service-machine-id.drv
  /nix/store/1yi25bpq5scpk8dpgnf38kfyx8phv75w-container-test-run-service-machine-id.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