these 2 derivations will be built:
  /nix/store/x2bwjcfgzppl4pjp2ps093563a6x13hd-nixos-test-driver-index_advisor.drv
  /nix/store/prgbls2xkl6xgw32yn0ak38kdi7dyimm-vm-test-run-index_advisor.drv