these 6 derivations will be built:
  /nix/store/8dbfqy7b80f8zxvgdrfqf7sxk1jqfzs8-source.drv
  /nix/store/vdxg5b22lv1g1wdphxzwm63v88j8dc6h-cargo-package-rand-0.10.3.drv
  /nix/store/c0ilp3vdnn0pb549pgly147gj7lmnah6-vendor-registry.drv
  /nix/store/v76y02pdvciipwxff9h00slq1jvg1dik-vendor-cargo-deps.drv
  /nix/store/lqg7g44nnk066k87w9lp59rhgdcjllh9-harmonia-deps-3.3.0.drv
  /nix/store/0vrdlkb84vxpqyssnlxyp0iac0i29id4-harmonia-clippy-3.3.0.drv
this path will be fetched (103.6 KiB download, 103.6 KiB unpacked):
  /nix/store/75ap6cpynrv674m55i4li6vkgi68h1z8-cargo-src-rand-0.10.3