this derivation will be built:
  /nix/store/5619b6ygh3vl57asvpc23p6fwk883w0y-fmt.drv
building '/nix/store/5619b6ygh3vl57asvpc23p6fwk883w0y-fmt.drv'
fmt> traversed 26 files
fmt> emitted 9 files for processing
fmt> formatted 9 files (0 changed) in 72ms

upload niks3: ok