these 4 derivations will be built:
  /nix/store/wbfqqr91ch2zip3z8724hqhwr5vfsm5w-crate-serde_json-1.0.154.tar.gz.drv
  /nix/store/cv2s58sgfsc519ixn7gfah4n9s5j744k-serde_json-1.0.154.drv
  /nix/store/0kl1wp1vad4a0srdv76dkcjr851hlav5-cargo-vendor-dir.drv
  /nix/store/hjwah0rclnd9i3azp9dm1i8ncib2j2bp-nix-diff-0.1.0.drv