these 6 derivations will be built:
  /nix/store/5v4y61r100xgz6c0gf9p39m6cfr5mxm9-iets-0.1.0.drv
  /nix/store/7wmxrzbj19wvw3k23wrd1y9xxr7xmd1r-closure-info.drv
  /nix/store/6nfajdl03kk9qmjwdr4vwg1fdl25632d-test-script.drv
  /nix/store/zzwpmgv5gbp22d76if8wr0fk7wr5a9bn-driverConfiguration.json.drv
  /nix/store/v1c8745n2rrpjwl0pjxvxlr32v1073r6-nixos-test-driver-iets-cachetest.drv
  /nix/store/9qh4bk5ajknjf52v0k7r2ki81s2jql0n-container-test-run-iets-cachetest.drv