this derivation will be built:
  /nix/store/rkg87m2blyhh77j2il9mazcfxr10dw8c-treefmt-check.drv
building '/nix/store/rkg87m2blyhh77j2il9mazcfxr10dw8c-treefmt-check.drv'
treefmt-check> traversed 554 files
treefmt-check> emitted 374 files for processing
treefmt-check> formatted 374 files (0 changed) in 3.812s

upload niks3: ok