these 2 derivations will be built:
  /nix/store/3c0zrsd3cisidrxjflw5znijb03cbf6z-flake-inputs.drv
  /nix/store/ilvmxcn4k8qcky44pap3xl63zbsvwgvd-check-flake-inputs.drv
building '/nix/store/3c0zrsd3cisidrxjflw5znijb03cbf6z-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=23&system=aarch64-linux'
building '/nix/store/3c0zrsd3cisidrxjflw5znijb03cbf6z-flake-inputs.drv' on farm.numtide.com:50051
flake-inputs> elastic-arm-b1a4a024: building 3c0zrsd3cisidrxjflw5znijb03cbf6z-flake-inputs.drv
building '/nix/store/ilvmxcn4k8qcky44pap3xl63zbsvwgvd-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/ilvmxcn4k8qcky44pap3xl63zbsvwgvd-check-flake-inputs.drv' on farm.numtide.com:50051
check-flake-inputs> elastic-arm-97cbd869: building ilvmxcn4k8qcky44pap3xl63zbsvwgvd-check-flake-inputs.drv
could not copy /nix/store/k35h8c942svphi0f12l3zr0jzwxqybwy-check-flake-inputs: error: gRPC FetchNars failed: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.2:50051: tcp handshaker shutdown
error: some outputs are unexpectedly invalid