these 11 derivations will be built:
  /nix/store/q98x3wlfff42ck69c8s3fj4yv9h5qqfn-unit-niks3.service.drv
  /nix/store/3kj3j6np3gipjlv1hgri43xixs22v7k7-system-units.drv
  /nix/store/lbb40whz8rsxaa4wc8lcpgrkag3yrz18-etc.drv
  /nix/store/74jscw65pfjyjimaj5yirvpsxaa6mprz-activate.drv
  /nix/store/nq2yx1smg91wy050nq0crs2prh59jx2b-nixos-system-server-test.drv
  /nix/store/5fradkr4yilp4bsrk6kjr75j2qqsxz1v-closure-info.drv
  /nix/store/dzb8v24ar8gyyfvji1f9j92l1l8wd7yv-run-nixos-vm.drv
  /nix/store/77lnzryfmw2xvqg46ynnjk249knjhwkk-nixos-vm.drv
  /nix/store/32a5bnq11skmj2rrj49i2r7wqk3jy9a7-driverConfiguration.json.drv
  /nix/store/zwmimpzyv8nm9d5k2h1d1r6ps2p893rz-nixos-test-driver-nixos-test-external-signer.drv
  /nix/store/p1m1jjrlm57rzv0s4k8xfwb4kn4jqdc4-vm-test-run-nixos-test-external-signer.drv
Failed to find a machine for remote build!
derivation: p1m1jjrlm57rzv0s4k8xfwb4kn4jqdc4-vm-test-run-nixos-test-external-signer.drv
required (system, features): (aarch64-linux, [kvm, nixos-test])
1 available machines:
(systems, maxjobs, supportedFeatures, mandatoryFeatures)
([aarch64-darwin, x86_64-darwin], 8, [big-parallel, recursive-nix], [])