this derivation will be built:
  /nix/store/c9s91j8afv766kczzfsd73pzphx6san6-interpolate-conformance.drv
building '/nix/store/c9s91j8afv766kczzfsd73pzphx6san6-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/c9s91j8afv766kczzfsd73pzphx6san6-interpolate-conformance.drv' on farm.numtide.com:50051
interpolate-conformance> elastic-arm-51d15a3d: building c9s91j8afv766kczzfsd73pzphx6san6-interpolate-conformance.drv
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected
could not copy /nix/store/hhwnnq47q5nlajp7jk8spc3i3w4ngs6g-interpolate-conformance: error: gRPC FetchNars failed: errors resolving farm.numtide.com:50051: [field:hostname lookup error:address lookup failed for farm.numtide.com:50051: DNS query cancelled]
error: some outputs are unexpectedly invalid