this derivation will be built:
  /nix/store/v8l8j60qah6pkfbsdqgzxkv0d7kdjf40-treefmt-check.drv
building '/nix/store/v8l8j60qah6pkfbsdqgzxkv0d7kdjf40-treefmt-check.drv'
treefmt-check> traversed 554 files
treefmt-check> emitted 374 files for processing
treefmt-check> formatted 374 files (0 changed) in 7.435s

upload niks3: ok