this derivation will be built:
  /nix/store/j5k7zwkw587ajs2mkhnfr0zvgp0rqc8s-check-t3code.drv
building '/nix/store/j5k7zwkw587ajs2mkhnfr0zvgp0rqc8s-check-t3code.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/j5k7zwkw587ajs2mkhnfr0zvgp0rqc8s-check-t3code.drv' on farm.numtide.com:50051
check-t3code> elastic-arm-cb9b0b2d: building j5k7zwkw587ajs2mkhnfr0zvgp0rqc8s-check-t3code.drv
could not copy /nix/store/pca9dkka8jczbplaagsw5dvk524qgml1-check-t3code: 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