this derivation will be built:
  /nix/store/mgd1dxp6qh5kjzkx4rj5yjrlpkxh3jpz-interpolate-conformance.drv
building '/nix/store/mgd1dxp6qh5kjzkx4rj5yjrlpkxh3jpz-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=21&system=aarch64-darwin'
building '/nix/store/mgd1dxp6qh5kjzkx4rj5yjrlpkxh3jpz-interpolate-conformance.drv' on farm.numtide.com:50051
interpolate-conformance> mac02: building mgd1dxp6qh5kjzkx4rj5yjrlpkxh3jpz-interpolate-conformance.drv
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected
could not copy /nix/store/8qqpajvpqshnah603l3qddvawyz1xrcc-interpolate-conformance: error: gRPC FetchNars failed: failed to connect to all addresses; last error: UNKNOWN: ipv6:%5B2a01:4f9:3071:1fc8::1%5D:50051: handshaker shutdown
error: some outputs are unexpectedly invalid