this derivation will be built:
  /nix/store/jxlik4408x61472kpgmd76qpvrvrx3x6-iets-nextest-0.1.0.drv
this path will be fetched (8.9 MiB download, 28.2 MiB unpacked):
  /nix/store/kwm3g9vh36d9zd171v0nz64fyan1hvfz-cargo-nextest-0.9.143