these 2 derivations will be built:
  /nix/store/7dm6jf1s8vnnk2bvqh0bg9ilzvyjlnl5-flake-inputs.drv
  /nix/store/rdlbhdrjwz2il8n1pgxf5bp6n3kw0sn9-check-flake-inputs.drv
building '/nix/store/7dm6jf1s8vnnk2bvqh0bg9ilzvyjlnl5-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-linux'
building '/nix/store/7dm6jf1s8vnnk2bvqh0bg9ilzvyjlnl5-flake-inputs.drv' on farm.numtide.com:50051
flake-inputs> elastic-arm-cb9b0b2d: building 7dm6jf1s8vnnk2bvqh0bg9ilzvyjlnl5-flake-inputs.drv
building '/nix/store/rdlbhdrjwz2il8n1pgxf5bp6n3kw0sn9-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-linux'
building '/nix/store/rdlbhdrjwz2il8n1pgxf5bp6n3kw0sn9-check-flake-inputs.drv' on farm.numtide.com:50051
check-flake-inputs> elastic-arm-e018912f: building rdlbhdrjwz2il8n1pgxf5bp6n3kw0sn9-check-flake-inputs.drv
could not copy /nix/store/xjr7b1cccjhhqgsm5i53yzczyf86r1jn-check-flake-inputs: error: gRPC FetchNars failed: failed to connect to all addresses; last error: UNKNOWN: ipv4:65.21.215.17:50051: handshaker shutdown
error: some outputs are unexpectedly invalid