Halluc-Bug-Async-Race

The model receives the prompt (and optional system message). The run uses scorer rubric_json_metrics with the JSON configuration below. Pass/fail and partial credit are determined entirely by that scorer against the model output; no human grading.

Return JSON only with keys answer, supported_facts, uncertainty. Two async updates read the same balance and write later. Identify lost update risk and avoid claiming JavaScript single-threading prevents races.

{
  "metrics": {
    "accuracy": {
      "checks": [
        {
          "contains": [
            "same balance"
          ]
        },
        {
          "contains": [
            "lost update"
          ]
        },
        {
          "contains": [
            "async"
          ]
        }
      ]
    },
    "fabricated": {
      "checks": [
        {
          "contains": [
            "single-threading"
          ]
        },
        {
          "contains": [
            "does not prevent"
          ]
        },
        {
          "contains": [
            "race"
          ]
        }
      ]
    }
  }
}