these 3 derivations will be built:
  /nix/store/0alffqy41lyw3w1ycxqhyv28ia1cns8s-driverConfiguration.json.drv
  /nix/store/3991b9475qrzbjnilikd1qxz9b5xma1k-nixos-test-driver-nix-grpc-farm.drv
  /nix/store/x6vlxxrx0x5jbawniblxw324qsqfh8g3-vm-test-run-nix-grpc-farm.drv
Failed to find a machine for remote build!
derivation: x6vlxxrx0x5jbawniblxw324qsqfh8g3-vm-test-run-nix-grpc-farm.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], [])