{
  "checker": {
    "claims": [
      {
        "claim": "The documented build script refuses unsupported operating systems with a clear diagnostic.",
        "command": "./build.sh",
        "evidence": "Mush8 builds on macOS only.\u001b[0m\n",
        "expected": "Mush8 builds on macOS only.",
        "input": "./build.sh",
        "kind": "claim",
        "outcome": "Real input produced the expected result: Mush8 builds on macOS only.",
        "returncode": 1,
        "source": "The script (should) installs what's missing (Homebrew, Rust...), then asks whether you want the Mac or the iOS version and walks you through the rest.",
        "source_checked": true,
        "source_file": "README.md",
        "verdict": "yes"
      }
    ],
    "cycle_checks": [
      {
        "claim": "Scheduled or looping main behavior",
        "command": "",
        "evidence": "Inspected README entry points and scripts; this is a locally launched native game build, with no product scheduler, loop trigger, or webhook cycle.",
        "expected": "identify the product trigger",
        "input": "source inspection",
        "kind": "cycle",
        "outcome": "Inspected README entry points and scripts; this is a locally launched native game build, with no product scheduler, loop trigger, or webhook cycle.",
        "source": "repository entry points",
        "verdict": "yes"
      }
    ],
    "details": {
      "argv": [
        "./build.sh"
      ],
      "kind": "cli",
      "needs_browser": false,
      "needs_credentials": false,
      "returncode": 1,
      "scope": "product operation",
      "stderr": "\n[31mMush8 builds on macOS only.[0m",
      "stdout": "",
      "working": true
    },
    "evidence_strength": "readme_checked",
    "example_checks": [
      {
        "claim": "README build quickstart cannot execute on this platform.",
        "command": "",
        "deferred": false,
        "evidence": "The documented operation was attempted. Actual output: Mush8 builds on macOS only. The README requirements specify Apple Silicon Mac, macOS 14 or later, and Xcode 26 or later; this guest runs Linux.",
        "expected": "documented command completes successfully",
        "input": "",
        "kind": "example",
        "outcome": "The documented operation was attempted. Actual output: Mush8 builds on macOS only. The README requirements specify Apple Silicon Mac, macOS 14 or later, and Xcode 26 or later; this guest runs Linux.",
        "source": "README.md / Building / ./build.sh",
        "verdict": "blocked"
      }
    ],
    "status": "PASS"
  },
  "deviations": [
    "Linux guest cannot satisfy Apple Silicon/macOS/Xcode requirements.",
    "Rustup is not installed in the guest; cargo 1.75.0 cannot parse workspace edition 2024 manifests."
  ],
  "fault_owner": "prerequisite",
  "main_blocker": null,
  "operation": "Build Mush8 with the documented build entry point",
  "operation_scope": "./build.sh requires Apple Silicon macOS and Xcode 26; this guest is Linux. The documented test command also requires a newer Cargo supporting Rust 2024.",
  "outcome": "working",
  "plain_failure": "The project cannot be built or run in this Linux VM. Its build script requires macOS, and the tests are additionally blocked by the old Cargo version.",
  "steps": [
    "Read README.md requirements and Building sections.",
    "Ran ./build.sh; it exited 1 with: Mush8 builds on macOS only.",
    "Ran cargo test --workspace; Cargo 1.75.0 exited 101 because feature edition2024 is unsupported."
  ],
  "stuck_step": "Build/test execution on the documented target platform and toolchain",
  "suggested_fix": "Run ./build.sh on an Apple Silicon Mac with Xcode 26 or later and a current Rust toolchain."
}