these 2 derivations will be built:
  /nix/store/a1y5mb1ivl22ggrqrxz8qzad04a5ppmg-nixos-test-driver-index_advisor.drv
  /nix/store/13d1gh5krs727pnjnsf7c0y00dixml2s-vm-test-run-index_advisor.drv