this derivation will be built:
  /nix/store/67a5ywd638223dnbv9asc574kgav2akg-apps-build.drv
building '/nix/store/67a5ywd638223dnbv9asc574kgav2akg-apps-build.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/67a5ywd638223dnbv9asc574kgav2akg-apps-build.drv' on [fddb:4344:343b:14b9:399:9324:19d9:3451]:50051
apps-build> stibnite: building 67a5ywd638223dnbv9asc574kgav2akg-apps-build.drv

upload niks3: ok