these 3 derivations will be built:
  /nix/store/9k1vb9q7hkcnf6pqcgn5hcki3vvxlgbg-compact_str-0.10.0.drv
  /nix/store/kx674rg3n7a3kgpwlvvmgj5d7vwmkczj-cargo-vendor-dir.drv
  /nix/store/b1hw5g1yw8cflnm65k7m8qmg1gcdknnn-nixfmt-rs-static-x86_64-unknown-linux-musl-0.5.1.drv