these 3 derivations will be built:
  /nix/store/avrnvjlg2mvpjljly95jdk2hz4cmb867-iets-fuzzers-0.0.0.drv
  /nix/store/gp3f3xh1pizjc0aypqf1zh97yy2sslv2-iets-fuzz-diff-0.0.0.drv
  /nix/store/vhc9q10nwx9x0xmxs668pijh6f5dmim9-iets-fuzz-nar-check.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy