this derivation will be built:
  /nix/store/dc8lrl0dvnm8z2ad6zqam7rxvzid97bk-check-pi.drv
building '/nix/store/dc8lrl0dvnm8z2ad6zqam7rxvzid97bk-check-pi.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=23&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/dc8lrl0dvnm8z2ad6zqam7rxvzid97bk-check-pi.drv' on farm.numtide.com:50051
check-pi> elastic-arm-894d4556: building dc8lrl0dvnm8z2ad6zqam7rxvzid97bk-check-pi.drv