these 2 derivations will be built:
  /nix/store/rka7ksi2ws89p33mmx6pg1vjcsmc99fy-flake-inputs.drv
  /nix/store/w84nw0i9ga81wv4r8agf9qvlf9686nw4-check-flake-inputs.drv
building '/nix/store/rka7ksi2ws89p33mmx6pg1vjcsmc99fy-flake-inputs.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=20&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/rka7ksi2ws89p33mmx6pg1vjcsmc99fy-flake-inputs.drv' on farm.numtide.com:50051
flake-inputs> elastic-arm-3e34f16b: building rka7ksi2ws89p33mmx6pg1vjcsmc99fy-flake-inputs.drv
building '/nix/store/w84nw0i9ga81wv4r8agf9qvlf9686nw4-check-flake-inputs.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=20&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/w84nw0i9ga81wv4r8agf9qvlf9686nw4-check-flake-inputs.drv' on farm.numtide.com:50051
check-flake-inputs> elastic-arm-3e34f16b: building w84nw0i9ga81wv4r8agf9qvlf9686nw4-check-flake-inputs.drv