this derivation will be built:
  /nix/store/nxw4ssva2xq209hcb2cz5qhp7d40yb50-treefmt-check.drv
building '/nix/store/nxw4ssva2xq209hcb2cz5qhp7d40yb50-treefmt-check.drv'
treefmt-check> traversed 549 files
treefmt-check> emitted 371 files for processing
treefmt-check> formatted 371 files (0 changed) in 16.872s

upload niks3: ok