these 7 derivations will be built:
  /nix/store/gia2l75d1k8qpd3gyl4an2rv26d3wy5m-manifest.json.drv
  /nix/store/88zlip6nccyr211q85acrh107l9ir6r4-nixos-system-machine-test.drv
  /nix/store/gqf9k1856l1jlj23p8qzngpw807gxbsl-closure-info.drv
  /nix/store/mcmdpjay1ikdadzykvfwslgsi9l8yx23-run-nixos-vm.drv
  /nix/store/xhmzqfwrvkk7qsmrshgapl2vn60465ln-nixos-vm.drv
  /nix/store/vp9kgvafc4rdj4yl9xav1060a5p8c5pg-nixos-test-driver-sops-age-keys.drv
  /nix/store/j7acnbl7ncaznab0yj0vlly7yhcz22ym-vm-test-run-sops-age-keys.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
Failed to find a machine for remote build!
derivation: j7acnbl7ncaznab0yj0vlly7yhcz22ym-vm-test-run-sops-age-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], [])