these 6 derivations will be built:
  /nix/store/qc2h0m7d4pkvn0sxhyd4v0vms30ycwkn-iets-0.1.0.drv
  /nix/store/j3j7bj4y441dmq0wmlj030jml1a64va2-closure-info.drv
  /nix/store/adm9mwvvc9xp65jg0d5jkar1khm1af9z-test-script.drv
  /nix/store/nbfz1fbsxf23p2xzawgg6xc92fkiha7y-driverConfiguration.json.drv
  /nix/store/1zl7k7w91fsd1zxfa488ah35f21ljk4r-nixos-test-driver-iets-cachetest.drv
  /nix/store/9iz40681brx16nrqxa2dcmy1azgy1lvq-container-test-run-iets-cachetest.drv