these 3 derivations will be built:
  /nix/store/h7g0v5w57bx29jhdqn2awvgz1q1yrawg-simple-error-0.3.3.drv
  /nix/store/vd8adiq3hwwbjjn842kcijzm4qanpqai-cargo-vendor-dir.drv
  /nix/store/fx204xadqxnz3m9py2d7pfj2pv601zp1-envfs-1.1.0.drv