these 2 derivations will be built:
  /nix/store/0ws1k9ic170c35sd3fsw33ylwmxms61r-flake-inputs.drv
  /nix/store/rf675rs306sm93fxkr9lpg9c0z9czz6w-check-flake-inputs.drv
building '/nix/store/0ws1k9ic170c35sd3fsw33ylwmxms61r-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=21&system=aarch64-linux'
building '/nix/store/0ws1k9ic170c35sd3fsw33ylwmxms61r-flake-inputs.drv' on farm.numtide.com:50051
flake-inputs> elastic-arm-e65ee682: building 0ws1k9ic170c35sd3fsw33ylwmxms61r-flake-inputs.drv
building '/nix/store/rf675rs306sm93fxkr9lpg9c0z9czz6w-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=21&system=aarch64-linux'
building '/nix/store/rf675rs306sm93fxkr9lpg9c0z9czz6w-check-flake-inputs.drv' on farm.numtide.com:50051
check-flake-inputs> elastic-arm-e65ee682: building rf675rs306sm93fxkr9lpg9c0z9czz6w-check-flake-inputs.drv
could not copy /nix/store/2bm2s7xgii6y0v6g296agfbsybrr31cn-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