coldpass

adamtwiss/coda

GitHub ↗ · How this check works

Per-setup public labels: Linux / Haiku: Works

Static status badge · SVG · read-only JSON. Embed with ![Coldpass status](https://coldpass.dev/badge/adamtwiss--coda.svg).

Works

Only older checks are saved; no current product test.

Answers apply to each recorded setup, revision and operation. Earlier observations remain in Run details.

Tested on Linux
PlatformHaikuLuna
Linuxyes

Linux / Haiku 5.5: yes · Oct 17, 2026 · bc77da021c6d · claude-code / 2.1.300 (Claude Code)
Recorded operation: /workspace/coda

Needs keys or browser
None seen
Setup time
1 min 28 s to install, 4 min 6 s to first use
Issue
none found in recorded check

Safety: no observations were recorded for the selected revision. Functional results do not establish a safety result.

Repair history and test corrections
Current diagnosis: unknown · resolved

Coldpass condensed instruction text introduced newline controls rejected by the existing job schema before any model call. Job construction now normalizes instructional whitespace once, including repair context; exact original failure remains immutable. Default/repair schema regression passes.

Repair record fix-cb6a89dfec9ddf021a3a · current status JSON. Original run outcomes remain unchanged.

Failed run: adamtwiss/coda · Oct 16, 2026 · Our test failed; no repo verdict.

Test-repair rerun: adamtwiss/coda · Oct 16, 2026 · Not tested.

Run details

Haiku 5.5

Native agent · Checked operation passed

Checked operation /workspace/coda

Agent-reported scope: Built Coda with `make` (README 'Build from Source'), then ran the UCI engine over stdin: uci -> isready -> position startpos -> go depth 8 -> quit. Observed uciok, readyok, and 'bestmove a2a3'.

Run details
run
adamtwiss--coda-claude-haiku-5-5-1792237779171214855
date
Oct 17, 2026
time to working
438.4s
product hosting / execution
Local command in the guest
recorded operation scope
product operation
model
claude-haiku-5-5
agent / version
claude-code / 2.1.300 (Claude Code)
platform
linux
reported cost
$0.009635
Recorded source
https://github.com/adamtwiss/coda
Tool transport
mcp-assigned-vm
Test version
readme-520bfd15730ba11f12f732859d1d8be557b2f38c2b58468f19f590c551dabe62
revision
bc77da021c6dc99d6d6334b7a7dbf8b74c377134
Whose fault: not assigned · resolved

What the agent did

Built Coda with `make` (README 'Build from Source'), then ran the UCI engine over stdin: uci -> isready -> position startpos -> go depth 8 -> quit. Observed uciok, readyok, and 'bestmove a2a3'.

Read README.md and Makefile; net.txt points to the v0.9 net URL
Installed rustup stable toolchain (cargo 1.99.1) via sh.rustup.rs
apt-get install -y build-essential make (provides cc)
make: downloaded net-0F08CC1B.nnue (95 MB), then built the coda binary (~34 s on the rebuild)
Added a 4G swapfile after rustc was OOM-killed on the 1.8 GB VM
Ran ./coda with a UCI script; exit 0, bestmove returned
Wrote .coldpass/probe.json, observed.json, report.json

run JSON · checker evidence · agent report + check · transcript excerpt · error excerpt

Earlier attempts (1)

Haiku 5.5

Native agent · Not tested

Checked operation ./coda

Agent-reported scope: Start the Coda UCI engine binary built by `make` and run a real UCI search: uci, isready, position startpos, go depth 8. Observed uciok, readyok and a real bestmove (a2a3).

Run details
run
adamtwiss--coda-claude-haiku-5-5-1792199712904868791
date
Oct 16, 2026
time to working
392.5s
product hosting / execution
Local command in the guest
recorded operation scope
Linux x86-64 build via documented `make` (embedded production NNUE net). Exercised UCI search on the start position only. Not run: unit/lint suites (excluded by task), PGO, OpenBench, tablebases, multi-thread or long-time searches. git metadata not initialized; build.rs fell back to version 'Coda 0.9.4-nogit', which is expected for a source archive without .git.
model
claude-haiku-5-5
agent / version
claude-code / 2.1.300 (Claude Code)
platform
linux
reported cost
$0.014054
Recorded source
https://github.com/adamtwiss/coda
Tool transport
mcp-assigned-vm
Test version
readme-f6314b0231c0352937b365797cb448dbb55319d91559c81edc6dc34fe6ad53e4
revision
bc77da021c6dc99d6d6334b7a7dbf8b74c377134
Current diagnosis: unknown · resolved

Coldpass condensed instruction text introduced newline controls rejected by the existing job schema before any model call. Job construction now normalizes instructional whitespace once, including repair context; exact original failure remains immutable. Default/repair schema regression passes.

Repair record fix-cb6a89dfec9ddf021a3a · current status JSON. Original run outcomes remain unchanged.

Failed run: adamtwiss/coda · Oct 16, 2026 · Our test failed; no repo verdict.

Test-repair rerun: adamtwiss/coda · Oct 16, 2026 · Not tested.

Double-checks failed run: adamtwiss/coda · Oct 16, 2026.

Fix: fix-cb6a89dfec9ddf021a3a.

What the agent did

Start the Coda UCI engine binary built by `make` and run a real UCI search: uci, isready, position startpos, go depth 8. Observed uciok, readyok and a real bestmove (a2a3).

README 'Build from Source': install prerequisites (apt: build-essential git curl ca-certificates make pkg-config)
README 'Build from Source' 'Requires Rust 1.70+': installed rustup stable (rustc 1.99.1)
README 'Build from Source': make (downloads net-0F08CC1B.nnue from net.txt, builds ./coda with embedded net)
Ran UCI smoke: printf 'uci\nisready\nposition startpos\ngo depth 8\nquit\n' | ./coda

run JSON · checker evidence · agent report unavailable · transcript excerpt unavailable · error excerpt unavailable

No product verdict. Run record.