these 2 derivations will be built:
  /nix/store/k94xqljwj43yhdp7f4jjdpar9x4wq0qy-flake-inputs.drv
  /nix/store/ripg11zr7a9vs7fa2181g060p8yks9v1-check-flake-inputs.drv
building '/nix/store/k94xqljwj43yhdp7f4jjdpar9x4wq0qy-flake-inputs.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=21&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/k94xqljwj43yhdp7f4jjdpar9x4wq0qy-flake-inputs.drv' on farm.numtide.com:50051
flake-inputs> elastic-arm-23d67df9: building k94xqljwj43yhdp7f4jjdpar9x4wq0qy-flake-inputs.drv
building '/nix/store/ripg11zr7a9vs7fa2181g060p8yks9v1-check-flake-inputs.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=21&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/ripg11zr7a9vs7fa2181g060p8yks9v1-check-flake-inputs.drv' on farm.numtide.com:50051
check-flake-inputs> elastic-arm-23d67df9: building ripg11zr7a9vs7fa2181g060p8yks9v1-check-flake-inputs.drv