these 4 derivations will be built:
  /nix/store/157qf6qdikb3fhwjnrna9nkwl8vpg96g-iets-fuzz-diff-0.0.0.drv
  /nix/store/3shw0s4x7lbsrlv5bwzqc1sv32nl15mh-iets-0.1.0.drv
  /nix/store/3zknf2i0khhbikvxbq4xypmys1f54mv6-iets-conformance-adapter.drv
  /nix/store/9jvkg6pl410z02zdjk71g92rfwx6i9d7-nix-conformance-iets.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy