this derivation will be built:
  /nix/store/djlc3gpd6v92bc0h18hy3d645zffbz03-tasks-axi-0.2.6.drv
building '/nix/store/djlc3gpd6v92bc0h18hy3d645zffbz03-tasks-axi-0.2.6.drv' on 'grpc://[fddb:4344:343b:14b9:399:9324:19d9:3451]:50051?ca-cert=/run/nix-grpc-store/ca.crt&connect-timeout=5'
building '/nix/store/djlc3gpd6v92bc0h18hy3d645zffbz03-tasks-axi-0.2.6.drv' on [fddb:4344:343b:14b9:399:9324:19d9:3451]:50051
tasks-axi-0.2.6> stibnite: building djlc3gpd6v92bc0h18hy3d645zffbz03-tasks-axi-0.2.6.drv

upload niks3: ok