these 3 derivations will be built:
  /nix/store/9p7mp7fp7zgq0vq0xrirmvf1id7f6j4q-iets-fuzzers-0.0.0.drv
  /nix/store/nf9lzgqhjz185g963f48592143f13691-iets-fuzz-diff-0.0.0.drv
  /nix/store/4b7vpfazc7hv6ahcslh4w5gwn7qzqk43-iets-fuzz-drv-check.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy