{
  "checker": {
    "details": {
      "argv": [
        "<host-path>",
        "scripts/benchmark_loop_values.py",
        "--json-output",
        ".coldpass/probe_loop_values.json"
      ],
      "kind": "cli",
      "needs_browser": false,
      "needs_credentials": false,
      "returncode": 0,
      "scope": "product operation",
      "stderr": "",
      "stdout": "debug=False/cached=False/one/rusty/loaded\": 1.8848614500001306,\n    \"debug=False/cached=False/one/django/loaded\": 2.1978421000000026,\n    \"debug=False/cached=False/one/rusty/string\": 1.9052412499974027,\n    \"debug=False/cached=False/one/django/string\": 2.2196199999996225,\n    \"debug=False/cached=False/one/rusty/load_and_render\": 1.9223919000012302,\n    \"debug=False/cached=False/one/django/load_and_render\": 2.376839949999976,\n    \"debug=False/cached=True/two/rusty/loaded\": 3.6408160499973974,\n    \"debug=False/cached=True/two/django/loaded\": 4.136271199999442,\n    \"debug=False/cached=True/two/rusty/string\": 3.65850240000043,\n    \"debug=False/cached=True/two/django/string\": 4.127773700000148,\n    \"debug=False/cached=True/two/rusty/load_and_render\": 3.6736891999993304,\n    \"debug=False/cached=True/two/django/load_and_render\": 4.124704099999121,\n[excerpt truncated]",
      "working": true
    },
    "status": "PASS"
  },
  "deviations": [
    "CONTRIBUTING 'Final step' compilemessages not run (only needed for the test suite, not for this operation).",
    "Installed build-essential and gettext via apt because the guest had no C linker and Rust needs one; rustup had to be installed because cargo was absent."
  ],
  "main_blocker": null,
  "operation": "Ran the README's documented 'Loop rendering regressions' command: scripts/benchmark_loop_values.py --json-output, which checks output against Django and writes timing JSON.",
  "operation_scope": "Covers the native build plus the loop benchmark run only. Did not run the pytest suite, lint, or the Django conformance suite (out of scope for smoke). Browser/CDP endpoint not used.",
  "outcome": "working",
  "steps": [
    "Installed uv 0.13.1 via https://astral.sh/uv/install.sh",
    "Installed Rust toolchain via rustup (minimal, pinned 1.99.0 from rust-toolchain.toml)",
    "apt-get install build-essential gettext (C linker needed by Rust/pyo3; gettext for compilemessages)",
    "uv sync (CONTRIBUTING.md Option 1)",
    "uv run maturin develop --release (README 'Loop rendering regressions' build prerequisite)",
    ".venv/bin/python scripts/benchmark_loop_values.py --json-output .coldpass/loop_values.json (rc=0, output verified)"
  ],
  "stuck_step": null,
  "suggested_fix": null
}