this derivation will be built:
  /nix/store/9mnddzkgdcr7pa4sl4sdkhfskjvahs3h-ouroboros.drv
these 2 paths will be fetched (0.0 KiB download, 40.4 MiB unpacked):
  /nix/store/i2bp8q5ix7s0nj1qpj3f5whkp5s9ysr5-jemalloc-5.4.0
  /nix/store/5wd02grqz8aprq88y8mi7207afx0fzng-uv-0.13.1
building '/nix/store/9mnddzkgdcr7pa4sl4sdkhfskjvahs3h-ouroboros.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/9mnddzkgdcr7pa4sl4sdkhfskjvahs3h-ouroboros.drv' on [fddb:4344:343b:14b9:399:9324:19d9:3451]:50051
ouroboros> stibnite: building 9mnddzkgdcr7pa4sl4sdkhfskjvahs3h-ouroboros.drv
ouroboros> structuredAttrs is enabled

upload niks3: ok