this derivation will be built:
  /nix/store/hvyf3pnaa7y51yvr84pxkma98z3w4vs6-nix-shell.drv
these 2 paths will be fetched (3.0 MiB download, 9.2 MiB unpacked):
  /nix/store/disvs314l4diarkky01k3wyk63sg1hvr-cargo-criterion-1.1.0
  /nix/store/iy7gwnbba9qdhfd5cn7fgy53xxnjxj4i-cargo-insta-1.48.0