these 8 derivations will be built:
  /nix/store/zj5jaq411h9mpvjiycqajpjkvwh030si-nixos-system-bob-test.drv
  /nix/store/4z4ygkdi69kwwfixpl2w7r9yvqziap7z-closure-info.drv
  /nix/store/wra98mv8iqcsn3h4928wmfv6bjs1v3yk-nixos-system-clare-test.drv
  /nix/store/r5a5ic17p1xc4apl40pk50qaxmnbjhf1-closure-info.drv
  /nix/store/y2vn7kcfhvavb8hz6ijbdf3n8k6xhqla-nixos-system-alice-test.drv
  /nix/store/s0xnnqjldqypr2b7zpy9kgrpmzm3xd96-closure-info.drv
  /nix/store/g94lq7hidjlwbvmwjbvyxwi84icdvrzr-nixos-test-driver-ncps.drv
  /nix/store/z83hfqamsklrc7dz3bbzr6mqiybma7i8-container-test-run-ncps.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
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
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy