{
  "schema": "r05-generator-traceback-v1",
  "generator_rc": 1,
  "failure_class": "RuntimeError",
  "stderr_line_count": 6,
  "stderr_tail": [
    "Traceback (most recent call last):",
    "  File \"/tmp/step050m07r05a_extracted_generator.py\", line 1045, in <module>",
    "    transform_refresh_pool_safe(",
    "  File \"/tmp/step050m07r05a_extracted_generator.py\", line 455, in transform_refresh_pool_safe",
    "    raise RuntimeError(",
    "RuntimeError: refresh_pool_safe: backup path count=0"
  ],
  "traceback_captured": true
}