this derivation will be built:
  /nix/store/nx6aswjxc6vwpaqayw8dvfhc2g96hh8r-iets-langtests.drv
building '/nix/store/nx6aswjxc6vwpaqayw8dvfhc2g96hh8r-iets-langtests.drv'
iets-langtests> pass=291 fail=0
iets-langtests> 

upload niks3: ok