these 11 derivations will be built:
  /nix/store/81z7mwxckv4vqfsx3zwcgq4iy94393mb-unit-niks3.service.drv
  /nix/store/rqmafcbsapl7xnndk29hn13lgyjlbr98-system-units.drv
  /nix/store/gdn870zwbzdqc0y822wailp5xd675hhw-etc.drv
  /nix/store/jyh3blskiih0w75jj5w7v6sdy9scdn27-activate.drv
  /nix/store/0ypmc7kw1lawy6ywamn1z5fz7xv49nfc-nixos-system-server-test.drv
  /nix/store/hzvxdaqf2s6ms06lly0d7p5s8rbsy8l1-closure-info.drv
  /nix/store/107sy8qkrz3islpqfvrqf6a0wsrwpfhm-run-nixos-vm.drv
  /nix/store/387b72m0sn251g1yibx1q3cssaxbaidn-nixos-vm.drv
  /nix/store/v5hkk9g22j2nj4a4s21xs5dp8hv45wpa-driverConfiguration.json.drv
  /nix/store/lidkjim3wswdqah0qivv1rl0bjf4g411-nixos-test-driver-nixos-test-external-signer.drv
  /nix/store/sc7hvq3pqxnq1c2rz4sp4p6asv7957s6-vm-test-run-nixos-test-external-signer.drv
Failed to find a machine for remote build!
derivation: sc7hvq3pqxnq1c2rz4sp4p6asv7957s6-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], [])