these 4 derivations will be built:
  /nix/store/chh1xwkd47wjfn3yhhivkicvsp5rsc2c-iets-0.1.0.drv
  /nix/store/dlkn230psiy6f0mq4vg0g21wvd4mgd3h-iets-fuzz-diff-0.0.0.drv
  /nix/store/mscf9g7gry9w76cn4ad4dsdxvqkhga7k-iets-conformance-adapter.drv
  /nix/store/xjxlv2bf8w732rf5nn6fnfvn057j6hvn-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