this derivation will be built:
  /nix/store/vbxs79j65mvxa8ss1fam9q8c8csk6wb1-interpolate-conformance.drv
building '/nix/store/vbxs79j65mvxa8ss1fam9q8c8csk6wb1-interpolate-conformance.drv' on 'grpc://farm.numtide.com:50051?client-cert=/run/secrets/vars/per-machine/bld1/nix-farm-ci/crt&client-key=/run/secrets/vars/per-machine/bld1/nix-farm-ci/key&connect-timeout=20&system=aarch64-linux'
building 'vbxs79j65mvxa8ss1fam9q8c8csk6wb1-interpolate-conformance.drv' on farm.numtide.com:50051
building 'vbxs79j65mvxa8ss1fam9q8c8csk6wb1-interpolate-conformance.drv' on farm.numtide.com:50051
interpolate-conformance> bld3: building vbxs79j65mvxa8ss1fam9q8c8csk6wb1-interpolate-conformance.drv
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok