Reason-Rc-Memory-Leak-Closure

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, evidence, constraints. A module creates a large array and captures it in a closure. The closure is returned as a callback and stored in a global registry. The array is never released. Memory usage grows over time. What is the root cause of the memory leak?

{
  "metrics": {
    "accuracy": {
      "checks": [
        {
          "contains": [
            "closure"
          ]
        },
        {
          "contains": [
            "memory leak"
          ]
        },
        {
          "contains": [
            "global registry"
          ]
        }
      ]
    },
    "evidence": {
      "checks": [
        {
          "contains": [
            "large array"
          ]
        },
        {
          "contains": [
            "never released"
          ]
        },
        {
          "contains": [
            "captured"
          ]
        }
      ]
    },
    "constraint": {
      "checks": [
        {
          "contains": [
            "garbage collection"
          ]
        },
        {
          "contains": [
            "strong reference"
          ]
        },
        {
          "contains": [
            "deregister"
          ]
        }
      ]
    }
  }
}