this derivation will be built:
  /nix/store/b4pr7158n1715vv41xg2x1dp5ww3cgg9-interpolate-conformance.drv
farm.numtide.com:50051: failed to connect to all addresses; last error: UNKNOWN: ipv4:65.21.215.17:50051: connection attempt timed out before receiving SETTINGS frame, retrying
building '/nix/store/b4pr7158n1715vv41xg2x1dp5ww3cgg9-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-darwin'
building '/nix/store/b4pr7158n1715vv41xg2x1dp5ww3cgg9-interpolate-conformance.drv' on farm.numtide.com:50051
interpolate-conformance> mac02: building b4pr7158n1715vv41xg2x1dp5ww3cgg9-interpolate-conformance.drv
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok