this derivation will be built:
  /nix/store/sc6mziy9n2ix2aayhiqpgyp5zizf73ky-check-formatelf.drv
building '/nix/store/sc6mziy9n2ix2aayhiqpgyp5zizf73ky-check-formatelf.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=20&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/sc6mziy9n2ix2aayhiqpgyp5zizf73ky-check-formatelf.drv' on farm.numtide.com:50051
check-formatelf> elastic-arm-894d4556: building sc6mziy9n2ix2aayhiqpgyp5zizf73ky-check-formatelf.drv