these 2 derivations will be built:
  /nix/store/kbs2iwbkrwd07bqyx8wd6il9lxpk4lck-flake-inputs.drv
  /nix/store/fs9kgvna0skn8pgm5ryv65npdpawr3r7-check-flake-inputs.drv
building '/nix/store/kbs2iwbkrwd07bqyx8wd6il9lxpk4lck-flake-inputs.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/kbs2iwbkrwd07bqyx8wd6il9lxpk4lck-flake-inputs.drv' on farm.numtide.com:50051
flake-inputs> elastic-arm-52ccf228: building kbs2iwbkrwd07bqyx8wd6il9lxpk4lck-flake-inputs.drv
building '/nix/store/fs9kgvna0skn8pgm5ryv65npdpawr3r7-check-flake-inputs.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/fs9kgvna0skn8pgm5ryv65npdpawr3r7-check-flake-inputs.drv' on farm.numtide.com:50051
check-flake-inputs> elastic-arm-52ccf228: building fs9kgvna0skn8pgm5ryv65npdpawr3r7-check-flake-inputs.drv