these 4 derivations will be built:
  /nix/store/r5ylhicyav93qlbvkm0076w25jc3z2q5-Cargo.toml.drv
  /nix/store/bcx27xnaj44inj7sxbwvmm7zh5k71v7v-source.drv
  /nix/store/yhkpv3rn0p92nnq4802nqmbq9bfsqdkc-iets-fuzzers-deps-0.0.0.drv
  /nix/store/6mlyzzdrfvhk6dx6jaxkwp2879d309jz-iets-fuzzers-0.0.0.drv