these 3 derivations will be built:
  /nix/store/8pqp7ad0l9brmiggq16qcw0csy170blk-driverConfiguration.json.drv
  /nix/store/958fsrppzfhh4m0m5z1fi8lnxbkx1i3w-nixos-test-driver-nix-grpc-farm.drv
  /nix/store/50wnj890b1qnd4yqq2iljkzl005zcdzd-vm-test-run-nix-grpc-farm.drv
Failed to find a machine for remote build!
derivation: 50wnj890b1qnd4yqq2iljkzl005zcdzd-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], [])