{
  "at": 1789475623.7922833,
  "phase": "measure",
  "error": "RuntimeError",
  "detail": "error:\"ERR no such key\"\n",
  "trace": "Traceback (most recent call last):\n  File \"/tmp/codex/ltb1021/2026-09-15_contextra-redis-guide_r01/common.py\", line 18, in query\n    try:return json.loads(p.stdout)\n               ^^^^^^^^^^^^^^^^^^^^\n  File \"/usr/lib/python3.12/json/__init__.py\", line 346, in loads\n    return _default_decoder.decode(s)\n           ^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File \"/usr/lib/python3.12/json/decoder.py\", line 337, in decode\n    obj, end = self.raw_decode(s, idx=_w(s, 0).end())\n               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File \"/usr/lib/python3.12/json/decoder.py\", line 355, in raw_decode\n    raise JSONDecodeError(\"Expecting value\", s, err.value) from None\njson.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)\n\nDuring handling of the above exception, another exception occurred:\n\nTraceback (most recent call last):\n  File \"/tmp/codex/ltb1021/2026-09-15_contextra-sixteen-prepared_r01/run.py\", line 154, in execute\n    samples.append(old.snapshot(plan,True));deadline=samples[0]['at']+60\n                   ^^^^^^^^^^^^^^^^^^^^^^^\n  File \"/tmp/codex/ltb1021/2026-09-15_contextra-sixteen-off_r01/run.py\", line 120, in snapshot\n    redis=redis_sample(row,frames))\n          ^^^^^^^^^^^^^^^^^^^^^^^^\n  File \"/tmp/codex/ltb1021/2026-09-15_contextra-sixteen-off_r01/run.py\", line 100, in redis_sample\n    q=p.base.m.query;t=time.monotonic();info=q('reader','XINFO','STREAM',key)\n                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File \"/tmp/codex/ltb1021/2026-09-15_contextra-redis-guide_r01/common.py\", line 20, in query\n    if p.stdout.startswith(('error:', '(error)')):raise RuntimeError(p.stdout[:160])\n                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\nRuntimeError: error:\"ERR no such key\"\n\n"
}