these 3 derivations will be built:
  /nix/store/ffvwpb1xmkik3gsxs79jsn1g1i860kl8-treefmt.toml.drv
  /nix/store/53widkx06q1ar95shmjp1v7xc515k88n-treefmt.drv
  /nix/store/06ym96v8n4gflwzjr6vnfyv7i26azx4k-treefmt-check.drv
this path will be fetched (5.7 MiB download, 18.4 MiB unpacked):
  /nix/store/izg8xgb86vggsyzd9rs96w2jiyzjwl9j-rustfmt-1.99.1