these 4 derivations will be built:
  /nix/store/7aqj6p3v8xjsav9ap7awp868jzlpcb7b-iets-fuzz-diff-0.0.0.drv
  /nix/store/r2i2qi550i7zavxmqz81xana34ql3z9i-iets-0.1.0.drv
  /nix/store/0dpwvf8r2id0sp83m1bfvdk7idslgy10-iets-conformance-adapter.drv
  /nix/store/9iljsy67c4m7gld861kvlr5gk99xm7rz-nix-conformance-iets.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy