these 5 derivations will be built:
  /nix/store/cah9w1lbssih10yxfq822ijcd43vfxg4-dummy.rs.drv
  /nix/store/zih7y9zh1zkq3iy6lciy9vqkspj4h8h2-Cargo.toml.drv
  /nix/store/zmlfhs10rl6r5xn6qnxxkqnygcbq6hd1-source.drv
  /nix/store/3vfagl46vwq7wm4qy43rzrba24xiqnck-iets-deps-0.1.0.drv
  /nix/store/w6027fnkap41m1iqqkgw1wgwb21n6yyk-iets-0.1.0.drv
this path will be fetched (0.0 KiB download, 1.7 MiB unpacked):
  /nix/store/dhkzrk1sng47ywgmc5vj33s60zdyvnkm-crane-utils-0.0.1