these 4 derivations will be built:
  /nix/store/9sj1n2372vrhri11i74f6jxwisjkcvjn-crate-tokio-1.53.1.tar.gz.drv
  /nix/store/dcig6zp01p8cha6c22q2b4d77wsfbdxm-tokio-1.53.1.drv
  /nix/store/kl3c0728c63bx8nf2kyqbr3wc8f7ih17-cargo-vendor-dir.drv
  /nix/store/02sjkswm82bqarm1r9missykhvz3433j-fast-nix-gc-0.1.0.drv