these 4 derivations will be built:
  /nix/store/33pvs43kr3zvnjxnvgvg76niwwdii0pq-source.drv
  /nix/store/8vsf2da7qyrgj105761mb2y3m9i003ah-vendor-cargo-deps.drv
  /nix/store/j46j48z75py8x9ys0cabb8j795551nks-tribuchet-deps-0.1.0.drv
  /nix/store/islw6dw5725y8sjww88narp43jryqp37-tribuchet-0.1.0.drv