these 3 derivations will be built:
  /nix/store/q2faw95qibzv0fdfj23xqmbbvl9imzhf-similar-3.2.0.drv
  /nix/store/rc3ddl8j779lqd24hc0p4ndg2njyjyp5-cargo-vendor-dir.drv
  /nix/store/rq67bqv8aq1mx5cjajxxg5s4l8rc8v9v-nix-diff-0.1.0.drv