{ "run_id": "lmmx--mibz2-claude-haiku-5-5-1793133457078241352", "date": "2026-10-27T20:42:44.773594+00:00", "repo": "lmmx/mibz2", "kind": "repo", "source": "https://github.com/lmmx/mibz2", "commit": "24169e657c1fe7a4d1d2eb741178266fcf38dea4", "model": "claude-haiku-5-5", "model_version": "claude-haiku-5-5", "test_version": "readme-d5b140d3c0f8b95c2dd6fe6fc381a303cacb92679582c22317d8e78b572f0cf2", "pass": true, "outcome": "pass", "time_to_working_s": 278.3442487650027, "total_s": 307.6952769756317, "steps": [ "cd && ls -la && cat README.md 2>/dev/null | head -200; id -u; python3 --version; git status 2>&1 | head -3", "cd && git init -q && git remote add origin https://github.com/lmmx/mibz2 && git fetch --depth 1 origin 24169e657c1fe7a4d1d2eb741178266fcf38dea4 2>&1 | tail -3; git reset --mixed FETCH_HEAD 2>&1; git log --oneline -1; git status --short | head; sed -n '/## Benchmark disclosure/,$p' README.md | tail -n +1 | head -60; ls .coldpass", "cd /tmp && (python3 -m venv /tmp/mibz-venv 2>&1 || (sudo -n apt-get -o DPkg::Lock::Timeout=300 install -y python3-venv >/tmp/apt.log 2>&1 && python3 -m venv /tmp/mibz-venv)) && /tmp/mibz-venv/bin/pip install -q mibz2 2>&1 | tail -5; /tmp/mibz-venv/bin/pip show mibz2 | head -2; /tmp/mibz-venv/bin/python -c \"import mibz2,sys;print(sys.version, mibz2.__file__)\"", "cd && ls python python/* examples tests | head -40; grep -n \"scripts\\|\\[project\" -A3 pyproject.toml | head -30; which bzip2 cargo; cat Justfile | head -40; ls .github/workflows", "cd && cat examples/bzcat.rs | head -60; cat .github/workflows/test.yml | grep -n \"run:\" -A2 | head -40; cat python/tests/test_decode.py | head -30", "cd && ls; grep -n \"stdin\\|stdin_file\\|input_file\\|expected_file\\|output_directory\" check.py | head -60", "cd && head -30 examples/windows.rs; echo ----; head -25 examples/fuzz.rs", "mkdir -p /tmp/mibz-data && cd /tmp/mibz-data && printf 'hello mibz2 pinned sample\\n%.0s' $(seq 1 200) > sample.txt && bzip2 -kf -9 sample.txt && ls -l && cd && cargo --version && timeout 900 cargo build --release --example windows 2>&1 | tail -15", "cd && grep -n \"rust-version\\|edition\" Cargo.toml; cat rust-toolchain* 2>/dev/null; which rustup; ls ~/.cargo/bin 2>/dev/null; grep -rn \"toolchain\" .github/workflows/test.yml | head -5", "cd /tmp && (curl -sSf https://sh.rustup.rs | sh -s -- -y --profile minimal --default-toolchain stable > /tmp/rustup.log 2>&1; echo rc=$?); tail -3 /tmp/rustup.log; ~/.cargo/bin/cargo --version; ~/.cargo/bin/rustc --version", "echo HOME=$HOME; ls -d $HOME/.cargo 2>&1; grep -i \"error\\|installed\\|Rust is installed\" /tmp/rustup.log | head -5; --version 2>&1; ls ; cat 2>/dev/null | head -20", "cd /tmp && (curl -sSf https://sh.rustup.rs | RUSTUP_INIT_SKIP_PATH_CHECK=yes sh -s -- -y --profile minimal --default-toolchain stable > /tmp/rustup2.log 2>&1; echo rc=$?); grep -i \"installed\\|error\" /tmp/rustup2.log | tail -3; --version; --version", "ls 2>&1 | head; --version && --version", "mkdir -p /tmp/rust-user && cd /tmp/rust-user && curl -sSfO https://static.rust-lang.org/rustup/dist/x86_64-unknown-linux-gnu/rustup-init && chmod +x rustup-init && CARGO_HOME=/tmp/rust-user/cargo RUSTUP_HOME=/tmp/rust-user/rustup RUSTUP_INIT_SKIP_PATH_CHECK=yes ./rustup-init -y --profile minimal --default-toolchain stable --no-modify-path > install.log 2>&1; echo rc=$?; tail -2 install.log; /tmp/rust-user/cargo/bin/cargo --version; /tmp/rust-user/cargo/bin/rustc --version", "export PATH=/tmp/rust-user/cargo/bin:$PATH CARGO_HOME=/tmp/rust-user/cargo RUSTUP_HOME=/tmp/rust-user/rustup; cd && timeout 1200 cargo run --release --example windows -- /tmp/mibz-out/windows /tmp/mibz-data/sample.txt.bz2 2>&1 | tail -25; echo rc=${PIPESTATUS[0]}; ls -la /tmp/mibz-out/windows 2>&1", "cd && sed -n 30,130p examples/windows.rs", "id -u; sudo -n apt-get -o DPkg::Lock::Timeout=300 install -y lbzip2 > /tmp/apt-lbzip2.log 2>&1; echo apt_rc=$?; tail -2 /tmp/apt-lbzip2.log; which lbzip2; export PATH=/tmp/rust-user/cargo/bin:$PATH CARGO_HOME=/tmp/rust-user/cargo RUSTUP_HOME=/tmp/rust-user/rustup; cd && rm -rf /tmp/mibz-out/windows && timeout 1200 cargo run --release --example windows -- /tmp/mibz-out/windows /tmp/mibz-data/sample.txt.bz2 2>&1 | tail -8; echo rc=${PIPESTATUS[0]}; ls -la /tmp/mibz-out/windows", "sudo -n apt-get -o DPkg::Lock::Timeout=300 update > /tmp/apt-update.log 2>&1; echo upd_rc=$?; sudo -n apt-get -o DPkg::Lock::Timeout=300 install -y lbzip2 > /tmp/apt-lbzip2.log 2>&1; echo apt_rc=$?; tail -2 /tmp/apt-lbzip2.log; which lbzip2", "export PATH=/tmp/rust-user/cargo/bin:$PATH CARGO_HOME=/tmp/rust-user/cargo RUSTUP_HOME=/tmp/rust-user/rustup; cd && rm -rf /tmp/mibz-out/windows && timeout 1200 cargo run --release --example windows -- /tmp/mibz-out/windows /tmp/mibz-data/sample.txt.bz2 2>&1 | tail -8; echo rc=${PIPESTATUS[0]}; ls -la /tmp/mibz-out/windows", "cd && /tmp/mibz-venv/bin/pip install -q pytest 2>&1 | tail -2; timeout 900 /tmp/mibz-venv/bin/pytest -q python/tests 2>&1 | tail -6; echo rc=${PIPESTATUS[0]}", "cd /tmp && timeout 900 /tmp/mibz-venv/bin/pytest -q --import-mode=importlib 2>&1 | tail -6; echo rc=${PIPESTATUS[0]}", "cd && rm -rf /tmp/mibz-out/windows && mkdir -p /tmp/mibz-out && CARGO=/tmp/rust-user/cargo/bin/cargo && ENV='{\"PATH\":\"/tmp/rust-user/cargo/bin:/usr/local/bin:/usr/bin:/bin\",\"CARGO_HOME\":\"/tmp/rust-user/cargo\",\"RUSTUP_HOME\":\"/tmp/rust-user/rustup\"}' && cat > .coldpass/probe.json <\",\"env\":$ENV,\"output_directory\":\"/tmp/mibz-out/probe\",\"expected_text\":\"identical in libbzip2, lbzip2\"}\nEOF\ncat > .coldpass/claims.json <\",\"env\":$ENV,\"output_directory\":\"/tmp/mibz-out/claim-1\",\"expected_text\":\"every block CRC checked: identical in libbzip2, lbzip2\"},\n{\"kind\":\"claim\",\"claim\":\"Documented windows example command decodes a .bz2 window file\",\"source\":\"cargo run --release --example windows -- OUT w.bin...\",\"input\":\"sample.txt.bz2\",\"expected\":\"1 blocks, 5200 bytes, 0 windows failed\",\"probe_kind\":\"cli\",\"argv\":[\"$CARGO\",\"run\",\"--release\",\"--example\",\"windows\",\"--\",\"/tmp/mibz-out/claim-2\",\"/tmp/mibz-data/sample.txt.bz2\"],\"cwd\":\"\",\"env\":$ENV,\"output_directory\":\"/tmp/mibz-out/claim-2\",\"expected_text\":\"1 blocks, 5200 bytes, 0 windows failed\"}\n]\nEOF\ncat > .coldpass/examples.json <\"],\"cwd\":\"/tmp\",\"env\":{},\"expected_text\":\"14 passed\"}\n]\nEOF\necho '{\"detected\":false,\"reason\":\"Inspected README, src, examples, Justfile and .github workflows: mibz2 is a bzip2 decoder library and CLI-style examples (bzcat, windows); it has no scheduler, cron, daemon, loop, webhook, --once or --now entry point, so there is no product cycle to trigger.\",\"checks\":[]}' > .coldpass/cycles.json\npython3 -I -c 'import json;[json.load(open(f\"\")) for n in [\"probe.json\",\"claims.json\",\"examples.json\",\"cycles.json\"]];print(\"json ok\")'", "cd && rm -rf /tmp/mibz-out/probe /tmp/mibz-out/claim-1 /tmp/mibz-out/claim-2 && = timeout 1500 python3 -I --validate --replay 2>&1 | tail -60", "cd && cat > .coldpass/report.json <<'EOF'\n{\"outcome\":\"working\",\"fault_owner\":null,\"operation\":\"Decode a real bzip2 (.bz2) file with mibz2 and verify its output and CRCs against libbzip2 and lbzip2, using the README's documented windows example command, plus the repo's Python test suite against the installed wheel.\",\"operation_scope\":\"Linux x86-64 guest (Ubuntu, Python 3.12.3, Rust 1.99.1 user-local). Covers the README Install step (pip install mibz2, from PyPI, version 0.1.5) and the Rust example 'cargo run --release --example windows'. Not covered: the README's Python API calls (mibz2.decompress / mibz2.open) and bzcat, because the README has no Python CLI and the checker's stdin is UTF-8 text, which cannot carry binary .bz2 data.\",\"steps\":[\"git init; git remote add origin https://github.com/lmmx/mibz2; git fetch --depth 1 origin 24169e657c1fe7a4d1d2eb741178266fcf38dea4; git reset --mixed FETCH_HEAD\",\"python3 -m venv /tmp/mibz-venv; /tmp/mibz-venv/bin/pip install mibz2 (README: pip install mibz2)\",\"bzip2 -9 sample.txt -> sample.txt.bz2 (test input, outside the checkout)\",\"cargo run --release --example windows -- /tmp/mibz-out/probe /tmp/mibz-data/sample.txt.bz2 (README: cargo run --release --example windows -- OUT w.bin...)\",\"/tmp/mibz-venv/bin/pytest -q --import-mode=importlib python/tests (repo's CI pytest step): 14 passed\",\"= python3 -I --validate --replay: valid true, replay PASS\"],\"deviations\":[\"Guest cargo was 1.75 (distro), too old for Cargo.lock v4 and rust-version 1.80. Installed Rust 1.99.1 with rustup-init into /tmp/rust-user (CARGO_HOME/RUSTUP_HOME there); plain rustup.sh refused because a system Rust was on PATH, so RUSTUP_INIT_SKIP_PATH_CHECK=yes was set. Probes use the absolute cargo path.\",\"'windows' example needs lbzip2 (it compares output against lbzip2; not documented in README). Ran sudo apt-get update, then apt-get install lbzip2 (first install attempt failed: 'Unable to locate package' because the index was stale).\",\"pip install mibz2 resolved to PyPI 0.1.5, while the pinned commit's Rust crate is 0.1.3; the Python tests were run against the PyPI wheel, not a build of the pinned commit.\",\"pytest run from the checkout failed to import (\\\"No module named mibz2._mibz2\\\") because the repo's python/ source dir shadowed the installed wheel. Re-ran with --import-mode=importlib from /tmp; 14 passed.\",\"Python API (mibz2.decompress, mibz2.open) and bzcat (cargo run --release --example bzcat -- 4 < f.bz2 > f) were not replayed as probes: no documented Python CLI exists, and the checker's stdin is UTF-8 text so binary .bz2 input cannot be passed. The windows example exercises the same decoder on real .bz2 data.\",\"No cycles: mibz2 has no scheduler/daemon/webhook entry point.\"],\"stuck_step\":null,\"main_blocker\":null,\"plain_failure\":null,\"suggested_fix\":null}\nEOF\npython3 -I -c 'import json;json.load(open(\"\"));print(\"report ok\")'; ls -la .coldpass; ls /tmp/mibz-out", "rm -rf /tmp/mibz-out/probe /tmp/mibz-out/claim-1 /tmp/mibz-out/claim-2 && ls -la /tmp/mibz-out && cd && ls -la .coldpass && ls report.json 2>&1 | head -1" ], "stuck_step": null, "error_excerpt": null, "what_it_did": "Decode a real bzip2 (.bz2) file with mibz2 and verify its output and CRCs against libbzip2 and lbzip2, using the README's documented windows example command, plus the repo's Python test suite against the installed wheel.", "suggested_fix": null, "tokens_in": 712926, "tokens_out": 18498, "cost_usd": 0.024463450000000008, "usage_complete": true, "checks": [ { "check": "operation", "status": "PASS", "details": { "working": true, "argv": [ "/tmp/rust-user/cargo/bin/cargo", "run", "--release", "--example", "windows", "--", "/tmp/mibz-out/probe", "/tmp/mibz-data/sample.txt.bz2" ], "kind": "cli", "returncode": 0, "stdout": "sample.txt: 1 whole blocks (bits 32..752), 1 streams ended, 5200 bytes decoded, every block CRC checked: identical in libbzip2, lbzip2, mibz2 scalar, mibz2 simd, mibz2 simd 3t, mibz2 decode_blocks\n1 blocks, 5200 bytes, 0 windows failed", "stderr": " Finished `release` profile [optimized + debuginfo] target(s) in 0.22s\n Running `target/release/examples/windows /tmp/mibz-out/probe /tmp/mibz-data/sample.txt.bz2`", "needs_credentials": false, "needs_browser": false, "scope": "product operation" } } ], "safety": { "version": "z2x-1", "rules_version": "z2x-1", "summary": "Review signals: 6 known vulnerability.", "expected": "Reviewed as expected for a test run: attempted writes that failed, so nothing was written; wrote only to its own open file handles.", "findings": [ { "kind": "known-vulnerability", "count": 3, "note": "OSV reports a known vulnerability in this dependency version.", "location_count": 1, "path": "zip" } ], "context": [], "limitations": [ "A short run cannot establish that code is safe.", "Connections show IP addresses; proxies can hide the final hostname.", "Tracing covers dispatched commands and their children, not the whole OS; guest root can interfere with tracing." ], "static": { "dependency_note": "OSV scanned supported lockfiles; unpinned dependencies and unsupported formats are outside this check." }, "evidence_url": "/safety/?run=lmmx--mibz2-claude-haiku-5-5-1793133457078241352", "evidence_file": "/data/safety/lmmx--mibz2-claude-haiku-5-5-1793133457078241352.json.gz" }, "agent_execution": "native_agent", "agent_runtime": "claude-code", "agent_runtime_version": "2.1.310 (Claude Code)", "tool_transport": "mcp-assigned-vm", "platform": "linux", "reasoning": "low", "service_tier": null, "resources": { "cpus": 2, "memory_mib": 4096, "disk_mib": 32768 }, "native_tool_calls": 25, "native_bundle": null, "architecture": null, "backend": "hyperv", "platform_details": { "backend": "hyperv", "os": "linux" }, "platform_conflicts": null, "sandbox_source": null, "source_pin": { "commit": "24169e657c1fe7a4d1d2eb741178266fcf38dea4", "url": "https://github.com/lmmx/mibz2" }, "purpose": "test_rerun", "profile": { "model": "claude-haiku-5-5", "reasoning": "low" }, "fault": { "owner": null, "status": "resolved", "reason": null }, "fix_id": "fix-cc0af1f39c036e3cbab1", "verifies_run_id": "lmmx--mibz2-claude-haiku-5-5-1793120364924760792", "hosting": null, "operation_scope": "product operation", "tool_calls": 25, "guest_setup": null, "runtime": null, "runtime_version": null, "runtime_revision": null, "source_revision": null, "evidence_version": null, "failure_origin": null, "evidence_strength": "readme_checked", "works": "yes", "install_s": null, "first_use_s": null, "mcp": "none", "needs": [], "needs_which": null, "agent_interface": [ "cli" ], "license": "Apache-2.0", "repo_url": "https://github.com/lmmx/mibz2", "cost_to_try": "free", "hardware": null, "what_failed": null, "local_or_hosted": "local", "cycle_checks": [ { "kind": "cycle", "claim": "Scheduled or looping main behavior", "source": "repository entry points", "input": "source inspection", "expected": "identify the product trigger", "verdict": "yes", "outcome": "Inspected README, src, examples, Justfile and .github workflows: mibz2 is a bzip2 decoder library and CLI-style examples (bzcat, windows); it has no scheduler, cron, daemon, loop, webhook, --once or --now entry point, so there is no product cycle to trigger.", "evidence": "Inspected README, src, examples, Justfile and .github workflows: mibz2 is a bzip2 decoder library and CLI-style examples (bzcat, windows); it has no scheduler, cron, daemon, loop, webhook, --once or --now entry point, so there is no product cycle to trigger.", "command": "" } ], "claims": [ { "kind": "claim", "claim": "Output is byte-for-byte libbzip2's and every block and stream CRC is checked", "source": "Its output is byte for byte libbzip2's, and every block CRC and stream CRC is checked.", "input": "sample.txt.bz2 (bzip2 -9 of a 5200-byte text)", "expected": "decoded blocks identical in libbzip2 and lbzip2 with CRC checked", "command": "/tmp/rust-user/cargo/bin/cargo run --release --example windows -- /tmp/mibz-out/claim-1 /tmp/mibz-data/sample.txt.bz2", "verdict": "yes", "outcome": "Real input produced the expected result: every block CRC checked: identical in libbzip2, lbzip2", "evidence": "every block CRC checked: identical in libbzip2, lbzip2, mibz2 scalar, mibz2 simd, mibz2 simd 3t, mibz2 decode_blocks\n1 blocks, 5200 bytes, 0 windows failed\n Finished `release` profile [optimized + debuginfo] target(s) in 0.21s\n Running `target/release/examples/windows /tmp/mibz-out/claim-1 /tmp/mibz-data/sample.txt.bz2`\n", "returncode": 0, "source_checked": true, "source_file": "README.md" }, { "kind": "claim", "claim": "Documented windows example command decodes a .bz2 window file", "source": "cargo run --release --example windows -- OUT w.bin...", "input": "sample.txt.bz2", "expected": "1 blocks, 5200 bytes, 0 windows failed", "command": "/tmp/rust-user/cargo/bin/cargo run --release --example windows -- /tmp/mibz-out/claim-2 /tmp/mibz-data/sample.txt.bz2", "verdict": "yes", "outcome": "Real input produced the expected result: 1 blocks, 5200 bytes, 0 windows failed", "evidence": "1 blocks, 5200 bytes, 0 windows failed\n Finished `release` profile [optimized + debuginfo] target(s) in 0.24s\n Running `target/release/examples/windows /tmp/mibz-out/claim-2 /tmp/mibz-data/sample.txt.bz2`\n", "returncode": 0, "source_checked": true, "source_file": "README.md" } ], "claims_note": null, "example_checks": [ { "kind": "example", "claim": "Repository Python test suite (CI pytest step) runs against the installed mibz2 package", "source": "README.md ## Python", "input": "python/tests", "command": "/tmp/mibz-venv/bin/pytest -q --import-mode=importlib ", "evidence": ".............. [100%]\n14 passed in 0.68s", "deferred": false, "expected": "all tests pass", "returncode": 0, "verdict": "yes", "outcome": "command completed successfully" } ], "does_what_it_says": "yes", "maintenance": { "archived": false, "commits_90d": 42, "last_commit_at": "2026-10-27T15:46:36Z", "last_release_at": "2026-10-27T15:11:13Z", "median_reply_hours": null, "merged_prs_90d": 19, "note": "actively maintained: last commit 0 days ago; 42 commits and 19 merged PRs in 90 days; 4 open issues, 1 open PRs; latest release 2026-10-27", "open_issues": 4, "open_prs": 1, "reply_share": null, "reply_threads": 0, "verdict": "maintained" }, "maintenance_verdict": "maintained", "maintenance_note": "actively maintained: last commit 0 days ago; 42 commits and 19 merged PRs in 90 days; 4 open issues, 1 open PRs; latest release 2026-10-27", "maintained": "active", "maintained_note": "last commit 0 days ago; 4 open issues, 7 answered or closed", "last_commit_at": "2026-10-27T16:58:08Z", "last_release_at": "2026-10-27T15:11:13Z", "open_issues": 4, "answered_issues": 7, "platforms_claimed": [ "linux", "mac", "windows" ], "topic": "other", "agent_interfaces": [ { "interface": "cli", "evidence": "independent checker", "observed": true, "operation_checked": true } ], "agent_interfaces_note": "README metadata is a discovery hint, not pinned documentation proof. Observed interfaces were exercised in this run. An empty list means unknown.", "mcp_context": null, "tested_at": "2026-10-27T20:42:44.773594+00:00", "tested_commit": "24169e657c1fe7a4d1d2eb741178266fcf38dea4", "tested_with": { "agent": "claude-code", "agent_version": "2.1.310 (Claude Code)", "model": "claude-haiku-5-5", "model_route": "claude-haiku-5-5", "reasoning": "low", "os": "linux", "backend": "hyperv", "transport": "mcp-assigned-vm" }, "setup_identity": { "repo": "lmmx/mibz2", "source": "https://github.com/lmmx/mibz2", "commit": "24169e657c1fe7a4d1d2eb741178266fcf38dea4", "source_revision": null, "os": "linux", "architecture": null, "backend": "hyperv", "model": "claude-haiku-5-5", "model_version": "claude-haiku-5-5", "agent_execution": "native_agent", "agent_runtime": "claude-code", "agent_runtime_version": "2.1.310 (Claude Code)", "tool_transport": "mcp-assigned-vm", "runtime": null, "runtime_version": null, "runtime_revision": null, "sandbox_source": null, "guest_setup": null, "source_pin": { "commit": "24169e657c1fe7a4d1d2eb741178266fcf38dea4", "url": "https://github.com/lmmx/mibz2" }, "platform_details": { "os": "linux", "backend": "hyperv" }, "platform_conflicts": null, "reasoning": "low", "service_tier": null, "resources": { "cpus": 2, "memory_mib": 4096, "disk_mib": 32768 }, "operation": "Decode a real bzip2 (.bz2) file with mibz2 and verify its output and CRCs against libbzip2 and lbzip2, using the README's documented windows example command, plus the repo's Python test suite against the installed wheel.", "operation_scope": "product operation", "hosting": null, "kind": "repo", "test_version": "readme-d5b140d3c0f8b95c2dd6fe6fc381a303cacb92679582c22317d8e78b572f0cf2", "evidence_version": null }, "transcript_url": "/transcripts/lmmx--mibz2-claude-haiku-5-5-1793133457078241352.txt", "report_url": "/reports/lmmx--mibz2-claude-haiku-5-5-1793133457078241352.json" }