these 2 derivations will be built:
  /nix/store/1ab9x9xvwwwy1a6chgk9dizvrc73rlji-flake-inputs.drv
  /nix/store/nhrpcd6fppxhxm96nplixbg8ank5d6ig-check-flake-inputs.drv
building '/nix/store/1ab9x9xvwwwy1a6chgk9dizvrc73rlji-flake-inputs.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/1ab9x9xvwwwy1a6chgk9dizvrc73rlji-flake-inputs.drv' on farm.numtide.com:50051
flake-inputs> mac02: building 1ab9x9xvwwwy1a6chgk9dizvrc73rlji-flake-inputs.drv
building '/nix/store/nhrpcd6fppxhxm96nplixbg8ank5d6ig-check-flake-inputs.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/nhrpcd6fppxhxm96nplixbg8ank5d6ig-check-flake-inputs.drv' on farm.numtide.com:50051
check-flake-inputs> mac02: building nhrpcd6fppxhxm96nplixbg8ank5d6ig-check-flake-inputs.drv
could not copy /nix/store/rvjqjg0ybbicnlk3gpqpxj25akfpx4dn-check-flake-inputs: error: gRPC FetchNars failed: failed to connect to all addresses; last error: UNKNOWN: ipv4:65.21.215.17:50051: tcp handshaker shutdown
error: some outputs are unexpectedly invalid