this derivation will be built:
  /nix/store/0dkda384a9hrp8v72n8bjhbq4r963ms3-nix-shell.drv
these 2 paths will be fetched (3.3 MiB download, 10.5 MiB unpacked):
  /nix/store/xxiy07x8yh5fg8y9yalm2517xshzlhx6-cargo-criterion-1.1.0
  /nix/store/yxcifjay063fnc38qkl75fnh7xgiwsyi-cargo-insta-1.49.0