{
  "checker": {
    "claims": [
      {
        "claim": "Cached property values remain cached between accesses.",
        "command": "<guest-path> -m pytest tests/test_cached_property.py",
        "evidence": "Probe could not complete: a unit suite does not establish a useful product operation",
        "expected": "tests pass",
        "input": "cached_property test suite",
        "kind": "claim",
        "outcome": "Probe could not complete: a unit suite does not establish a useful product operation",
        "source": "Now when we run it the price stays at $550.",
        "source_checked": true,
        "source_file": "README.md",
        "verdict": "blocked"
      }
    ],
    "cycle_checks": [
      {
        "claim": "Scheduled or looping main behavior",
        "command": "",
        "evidence": "Inspected README.md and Python package entry points; cached_property is invoked on attribute access and has no scheduler, polling loop, webhook, or recurring cycle.",
        "expected": "identify the product trigger",
        "input": "source inspection",
        "kind": "cycle",
        "outcome": "Inspected README.md and Python package entry points; cached_property is invoked on attribute access and has no scheduler, polling loop, webhook, or recurring cycle.",
        "source": "repository entry points",
        "verdict": "yes"
      }
    ],
    "details": {
      "argv": [
        "<guest-path>",
        "-m",
        "pytest",
        "tests/test_cached_property.py"
      ],
      "blocker": "a unit suite does not establish a useful product operation",
      "kind": "cli",
      "working": false
    },
    "evidence_strength": "nothing_checked",
    "example_checks": [
      {
        "claim": "Run documented make test target",
        "command": "<guest-path> -m pytest",
        "deferred": false,
        "evidence": "urn self.run(*args, **kwds)\n\ntests/test_coroutine_cached_property.py::TestCachedProperty::test_reset_cached_property\n  /usr/lib/python3.12/unittest/case.py:690: DeprecationWarning: It is deprecated to return a value that is not None from a test case (<bound method TestCachedProperty.test_reset_cached_property of <tests.test_coroutine_cached_property.TestCachedProperty testMethod=test_reset_cached_property>>)\n    return self.run(*args, **kwds)\n\n-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html\n======================== 27 passed, 6 warnings in 4.55s ========================",
        "expected": "All tests pass",
        "input": "Project tests",
        "kind": "example",
        "outcome": "command output contains a crash diagnostic",
        "returncode": 0,
        "source": "Makefile / test",
        "verdict": "no"
      }
    ],
    "status": "FAIL"
  },
  "deviations": [
    "System pip install -e . failed with externally-managed-environment; installed successfully into .venv.",
    "README does not specify a direct command; replay uses the README's cached Monopoly example as a Python stdin-style operation.",
    "27 tests passed with 6 deprecation/thread warnings."
  ],
  "fault_owner": "test",
  "main_blocker": "a unit suite does not establish a useful product operation",
  "operation": "Demonstrate cached_property caching and run project test suite",
  "operation_scope": "Python 3.12.3 venv; README example and documented make test",
  "outcome": "blocked",
  "plain_failure": null,
  "steps": [
    "python3 -m venv <guest-path>",
    "<guest-path> -m pip install -e .",
    "<guest-path> -m pip install -r requirements.txt",
    "PATH=<guest-path> make test"
  ],
  "stuck_step": "<guest-path> -m pytest tests/test_cached_property.py",
  "suggested_fix": null
}