these 3 derivations will be built:
  /nix/store/9710w83i58mpbn429jmi6cyfp1kic3af-iets-fuzzers-0.0.0.drv
  /nix/store/gjkbxqjv0rdf84cl42p370p4z4gcx4ms-iets-fuzz-diff-0.0.0.drv
  /nix/store/iacg8g98marcqy75r14ihmjjjmd6h5sg-iets-fuzz-drv-check.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy