this derivation will be built:
  /nix/store/v8ql22rx7f1fkmhp69xwfj7n171p41a2-treefmt-check.drv
building '/nix/store/v8ql22rx7f1fkmhp69xwfj7n171p41a2-treefmt-check.drv'
treefmt-check> treefmt v2.6.0traversed 63 files
treefmt-check> emitted 53 files for processing
treefmt-check> formatted 53 files (0 changed) in 79ms

upload attic: ok
✍️ Overwriting server "r2d2"