these 7 derivations will be built:
  /nix/store/9lwzvlmb7d3kvmi6glgcmzl977548jbr-manifest.json.drv
  /nix/store/g8p1npnr6wsafzqsi6s0acq0jdq3lfpk-nixos-system-machine-test.drv
  /nix/store/qsqk3w37i4n9am0vj19zxxfykdx0mczp-closure-info.drv
  /nix/store/d75mkzkrikj1crvysnl91slfng06z3v6-run-nixos-vm.drv
  /nix/store/lw3h5r2xc70l3d2hqbvxqgk2hhsyzrwf-nixos-vm.drv
  /nix/store/41974gzmb6rvvdkhaiygjlwghpwgp31b-nixos-test-driver-sops-age-keys.drv
  /nix/store/3wh89n6zvgxx5ylc2vapl4f3515jlwgh-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: 3wh89n6zvgxx5ylc2vapl4f3515jlwgh-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], [])