this derivation will be built:
  /nix/store/lj5l8gf2y7jypjhnmnxd07ghxms706pk-nix-shell.drv
these 2 paths will be fetched (3.3 MiB download, 10.4 MiB unpacked):
  /nix/store/gv7aqwbddm9dbzqakw664vc4yzzrlp4b-cargo-criterion-1.1.0
  /nix/store/d80akd9mxm99agbivakvs6wlaaanwpxp-cargo-insta-1.48.0