these 3 derivations will be built:
  /nix/store/p2qpf5iilyjlrv5977pp6a4k7fialb6m-treefmt.toml.drv
  /nix/store/d2h71d1v84xx6hljccq7g0zw388pfr4x-treefmt.drv
  /nix/store/irzak2crzghw43djbwxz09a72lndask9-treefmt-check.drv
this path will be fetched (6.0 MiB download, 18.3 MiB unpacked):
  /nix/store/i7qpcas4xd1kz9k98yh2c0w8ld0x288b-rustfmt-1.97.0