these 4 derivations will be built:
  /nix/store/1qwl77mk5qkc3y9vdnghbv0hx9s78zab-crate-log-0.4.34.tar.gz.drv
  /nix/store/9wpwn7wxvkdw51fr5bspdkm5bkzzcmpm-log-0.4.34.drv
  /nix/store/k8d5c1pynxlln8g45ayrkkq33qn01k21-cargo-vendor-dir.drv
  /nix/store/bhlp4bywrgl6mlv7pxhqn5pwf1zi0dib-fast-nix-gc-proptest-0.1.0.drv