this derivation will be built:
  /nix/store/0n1r6ch7h953pxcwv56cc8z682h1sj2x-check-tgrab.drv
building '/nix/store/0n1r6ch7h953pxcwv56cc8z682h1sj2x-check-tgrab.drv'

upload niks3: ok