this derivation will be built:
  /nix/store/r8fz4i6vnqb0ghsij19dji0jf5b0cxv3-interpolate-conformance.drv
farm.numtide.com:50051: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.2:50051: tcp handshaker shutdown, retrying
building '/nix/store/r8fz4i6vnqb0ghsij19dji0jf5b0cxv3-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 '/nix/store/r8fz4i6vnqb0ghsij19dji0jf5b0cxv3-interpolate-conformance.drv' on farm.numtide.com:50051
interpolate-conformance> elastic-arm-97cbd869: building r8fz4i6vnqb0ghsij19dji0jf5b0cxv3-interpolate-conformance.drv
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok