these 7 derivations will be built:
  /nix/store/7rz7567jnp0cqjk6vp8983s2zg2lslpq-manifest.json.drv
  /nix/store/8676gcvp5mv8sd7w0zmpapbx9gcfirzi-nixos-system-machine-test.drv
  /nix/store/306zbhxjxkg0ynsl9g8vpqbrhq230h4l-closure-info.drv
  /nix/store/xrgkaakpg544yjc8smxsialzlaqjsk1l-run-nixos-vm.drv
  /nix/store/5kbmr6ksahw74d56xf18myrsjl1ijl7v-nixos-vm.drv
  /nix/store/lzk05x3r5wnzkx8zib9d96681aj8rx12-nixos-test-driver-sops-age-ssh-keys.drv
  /nix/store/cyqda3sx65gzhzsl13wlfh4v7c6128p2-vm-test-run-sops-age-ssh-keys.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
Failed to find a machine for remote build!
derivation: cyqda3sx65gzhzsl13wlfh4v7c6128p2-vm-test-run-sops-age-ssh-keys.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], [])