these 5 derivations will be built:
  /nix/store/bb1yngc9rnq4bhcw62hhjmzd4iqlsym5-source.drv
  /nix/store/y3qczsxx73n2w9x2c3ayldkiy8p8kd5b-source.drv
  /nix/store/k0y0m2gkc2jaq35xjjki1s2nksqyp0gh-beads-rust-0.5.2-vendor-staging.drv
  /nix/store/si3jva6hva69qvf9p6hjw30q2akrwyw9-beads-rust-0.5.2-vendor.drv
  /nix/store/s6w824ggx3gkzlsf7a8kzjjgjff76hzk-beads-rust-0.5.2.drv