this derivation will be built:
  /nix/store/6kr9m6fs95l8lk1ri5yvqzxdr74fv6xw-treefmt-check.drv
building '/nix/store/6kr9m6fs95l8lk1ri5yvqzxdr74fv6xw-treefmt-check.drv'
treefmt-check> traversed 532 files
treefmt-check> emitted 363 files for processing
treefmt-check> formatted 363 files (0 changed) in 6.271s

upload niks3: ok