these 3 derivations will be built:
  /nix/store/vp9x9jqngy18qq9kr1ghlf4ypk8c90dd-treefmt.toml.drv
  /nix/store/67pbhhd67hqgig0wdk6h2g9rfkyblx1h-treefmt.drv
  /nix/store/fycva4jkgasnahrc4q0dn7w4xn83j06d-treefmt-check.drv
building '/nix/store/vp9x9jqngy18qq9kr1ghlf4ypk8c90dd-treefmt.toml.drv'
treefmt.toml> structuredAttrs is enabled
treefmt.toml> 
building '/nix/store/67pbhhd67hqgig0wdk6h2g9rfkyblx1h-treefmt.drv'
building '/nix/store/fycva4jkgasnahrc4q0dn7w4xn83j06d-treefmt-check.drv'
treefmt-check> treefmt v2.6.0traversed 22 files
treefmt-check> emitted 10 files for processing
treefmt-check> formatted 10 files (0 changed) in 56ms