Debug-Dead-Letter-Retry-Loop-V2

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 diagnosis, fix, tests. A queue worker catches processing errors and republishes the same message immediately without incrementing attempts or routing poison messages to the dead-letter queue, causing an infinite retry loop. Identify the retry bug and fix it.

{
  "metrics": {
    "repro": {
      "checks": [
        {
          "contains": [
            "same message"
          ]
        },
        {
          "contains": [
            "immediately"
          ]
        },
        {
          "contains": [
            "infinite retry"
          ]
        },
        {
          "contains": [
            "dead-letter"
          ]
        }
      ]
    },
    "hidden": {
      "checks": [
        {
          "contains": [
            "attempt count"
          ]
        },
        {
          "contains": [
            "backoff"
          ]
        },
        {
          "contains": [
            "poison message"
          ]
        }
      ]
    },
    "diagnose": {
      "checks": [
        {
          "contains": [
            "retry loop"
          ]
        },
        {
          "contains": [
            "republish"
          ]
        },
        {
          "contains": [
            "dead-letter queue"
          ]
        }
      ]
    }
  }
}