this derivation will be built:
  /nix/store/2rs561gaympdrz7rqkahmlcb352mkhni-nix-shell.drv
these 2 paths will be fetched (3.0 MiB download, 9.2 MiB unpacked):
  /nix/store/hihkqigr9hyn4h4wcbgd023xnc7983lp-cargo-criterion-1.1.0
  /nix/store/lgj5jgbgj6k75wk8z083f2cx5kczlm0s-cargo-insta-1.49.0