this derivation will be built:
  /nix/store/adk8ch4rzf1iqvjmxbi6nsnbf4r7z6px-iets-langtests.drv
building '/nix/store/adk8ch4rzf1iqvjmxbi6nsnbf4r7z6px-iets-langtests.drv'
iets-langtests> pass=291 fail=0
iets-langtests> 
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy

upload niks3: ok