this derivation will be built:
  /nix/store/7aqv9sgmysz95jv1rzk1lah62bqy7k51-nix-shell.drv
building '/nix/store/7aqv9sgmysz95jv1rzk1lah62bqy7k51-nix-shell.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/7aqv9sgmysz95jv1rzk1lah62bqy7k51-nix-shell.drv' on [fddb:4344:343b:14b9:399:9324:19d9:3451]:50051
nix-shell> stibnite: building 7aqv9sgmysz95jv1rzk1lah62bqy7k51-nix-shell.drv
nix-shell> Running phase: buildPhase

upload niks3: ok