these 6 derivations will be built:
  /nix/store/j7pzmk6n6wzdnlc3g5xhwzlgprj3j463-iets-0.1.0.drv
  /nix/store/sa724lny6k8f6spl357ij2zbg1k7kgbd-closure-info.drv
  /nix/store/88bjcw7kxqyjmz15bs4ai68pdk7hqfn0-test-script.drv
  /nix/store/8jwj1wzaqb0n463ysp1nifwkwd9ap56k-driverConfiguration.json.drv
  /nix/store/ib8cklw1k2lm7ccp161dw4dpqrd1daa1-nixos-test-driver-iets-cachetest.drv
  /nix/store/f1sfbcib1i4a29xnlgdz9blgryxx3d9x-container-test-run-iets-cachetest.drv