these 3 derivations will be built:
  /nix/store/fvfgxsbwsj1ckdpzp44qm0mpifqs2s2s-treefmt.toml.drv
  /nix/store/s5ppw8mv4l0ggim84ngibn2av4z2wbg0-treefmt.drv
  /nix/store/hpqck5cslb0mkkwhnm7ggsnygy0h2i5r-treefmt-check.drv
this path will be fetched (1.1 MiB download, 2.8 MiB unpacked):
  /nix/store/mb46b64cifxnfwlafy424qcp20v7zb6w-nixfmt-rs-0.5.3