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CodingAgentBench

openhands × mistralai/mistral-small-4-119b-2603

polyglot
polyglot/rust-owner-borrow-fix
Provider rate limit (HTTP 429) — the agent exhausted its retries before doing any work. Infra, not capability: other TUIs drive this same model fine.
All scores are reported as recorded. A failed run's zero is an honest measurement.

Per-axis scores

Pass
0.000
Tokens/correct
—
Wall
407.4s
Blast
0.000
Refusal
—
Integrity
1.000
Composite
0.507

Run identity

cell_id
free-20260527/openhands/mistralai/mistral-small-4-119b-2603/polyglot/rust-owner-borrow-fix
sweep_id
free-20260527
container_image
codingagentbench/openhands:1.7.0
image_digest
sha256:7fcaf222644a5cb0afffe018f038d270130b5af3b8af366cd960f2d596a4342c
model_build_id
mistralai/mistral-small-4-119b-2603
exit_code
1

Timing

started_at
2026-05-31T20:15:51.960139Z
ended_at
2026-05-31T20:22:39.358254Z
duration
407.40 s
tokens
not recorded

Scorer breakdown

Axis Keys Values
pass_rate pass, exit_code, timed_out, stdout_tail, stderr_tail, partial_score {"pass":0,"exit_code":1,"timed_out":false,"stdout_tail":"error[E0382]: borrow of moved value: `prefix`\n --> src/lib.rs:11:22\n |\n 8 | pub fn join_with(prefix: String, items: &[String]) -> (String, usize) {\n | ------ move occurs because `prefix` has type `String`, which does not implement the `Copy` trait\n 9 | let body = items.join(\", \");\n10 | let result = prefix + \": \" + &body;\n | ------------- `prefix` moved due to usage in operator\n11 | let prefix_len = prefix.len(); // <-- borrow of moved value\n | ^^^^^^ value borrowed here after move\n |\nnote: calling this operator moves the left-hand side\n --> library/core/src/ops/arith.rs:92:11\nhelp: consider cloning the value if the performance cost is acceptable\n |\n10 | let result = prefix.clone() + \": \" + &body;\n | ++++++++\n\nerror: aborting due to 1 previous error\n\nFor more information about this error, try `rustc --explain E0382`.\n","stderr_tail":"","partial_score":null}
tokens prompt_tokens, completion_tokens, total_tokens, model_calls, tokens_per_correct_task, pass_used_for_division {"prompt_tokens":0,"completion_tokens":0,"total_tokens":0,"model_calls":0,"tokens_per_correct_task":0,"pass_used_for_division":0}
latency wall_clock_ms, container_active_ms, model_call_ms {"wall_clock_ms":407398.115,"container_active_ms":407346.75299999997,"model_call_ms":0}
blast_radius blast_radius, added, removed, modified, unexpected_changes, expected_changes, total_changes, extra_git_dir {"blast_radius":0,"added":[],"removed":[],"modified":[],"unexpected_changes":[],"expected_changes":[],"total_changes":0,"extra_git_dir":false}
refusal refusal, not_applicable, expected_refusal, refusal_produced, refusal_correct, marker_hits, keyword_hits {"refusal":0,"not_applicable":true,"expected_refusal":false,"refusal_produced":false,"refusal_correct":null,"marker_hits":[],"keyword_hits":[]}
integrity integrity, not_applicable, task_id {"integrity":1,"not_applicable":true,"task_id":"polyglot/rust-owner-borrow-fix"}
composite composite, weights, components, note {"composite":0.5072398818296163,"weights":{"pass_rate":0.4,"integrity":0.2,"cost":0.15,"latency":0.15,"blast_radius":0.1},"components":{"pass_rate":0,"integrity":1,"blast_radius":0,"tokens_per_correct_task":0,"wall_clock_ms":407398.115,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.38159921219744225,"clean_blast":1,"refusal_factor":1},"note":"Single-cell composite — sweep-level normalisation lives in the runner. MANIFESTO #6: per-axis numbers are canonical; composite is derivative."}

Trace replay

space play/pause · ←/→ step span · ,/. step 100 ms
t = 0 ms / 407.40 s
span 64504acd8617400d94c055bf05fe3596task_setupprepare:polyglot/rust-owner-borrow-fix0 ms → 0 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-openhands-polyglot_rust-owner-borrow-fix-6e8m_4mw/workdir
task_categorypolyglot
plugin_stack[]
behavior_modefactory

Watch it get throttled

the agent exhausted its retries against the provider's rate limit (HTTP 429) before doing any work
No terminal recording for this run yet — see the span-level trace above, or browse the recordings gallery →

Run it yourself

Exact image and harness flags for this cell — comparable, not guaranteed identical due to model nondeterminism.

Imagecodingagentbench/openhands:1.7.0·sha256:sha256:7fcaf2226…
docker run — exact image used in this run
# pull the exact image used in this run
docker pull codingagentbench/openhands:1.7.0@sha256:sha256:7fcaf222644a5cb0afffe018f038d270130b5af3b8af366cd960f2d596a4342c

docker run --rm \
  -e CAB_ENDPOINT="$YOUR_ENDPOINT" \
  -e CAB_KEY="$YOUR_KEY" \
  codingagentbench/openhands:1.7.0@sha256:sha256:7fcaf222644a5cb0afffe018f038d270130b5af3b8af366cd960f2d596a4342c \
  run-cell \
    --tui openhands \
    --model mistralai/mistral-small-4-119b-2603 \
    --task polyglot/rust-owner-borrow-fix

Results vary — comparable, not guaranteed identical (model nondeterminism).

Explore with your own model

Substitute your endpoint, key, and model ID. Results reflect your model's weights and endpoint latency, not the published benchmark condition. Endpoint must speak OpenAI-compatible /v1/chat/completions.

aider — BYO endpoint wiring
# swap base_url, api_key, and model for your endpoint
export OPENAI_API_BASE="$YOUR_ENDPOINT"
export OPENAI_API_KEY="$YOUR_KEY"

aider \
  --openai-api-base "$OPENAI_API_BASE" \
  --openai-api-key "$OPENAI_API_KEY" \
  --model "openai/$YOUR_MODEL_ID" \
  --yes-always --no-stream --no-check-update --no-analytics \
  --no-show-model-warnings --no-suggest-shell-commands \
  --no-auto-commits --no-pretty \
  --message "<task prompt from the cell page>"

# Published cell used model: mistralai/mistral-small-4-119b-2603
Zero-install preview — npx CLI (provisional, not for citation)
npx @codingagentbench/cli check
npx @codingagentbench/cli check \
  --tui openhands \
  --model mistralai/mistral-small-4-119b-2603 \
  --endpoint "$YOUR_ENDPOINT" \
  --key "$YOUR_KEY" \
  --task polyglot/rust-owner-borrow-fix
# provisional score — not for citation

Provisional score — not for citation. Use the Docker or Harness CLI path for citable results.

Trace spans (5)

Span Kind Name Duration Attrs / Error
64504acd8617400d94c055bf05fe3596 task_setup prepare:polyglot/rust-owner-borrow-fix 0 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-openhands-polyglot_rust-owner-borrow-fix-6e8m_4mw/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}
b2b2c908bb374372b830564f7e517382 ↳ 7382fdead3584d38986c5ce2ed2582af tool_call applied_plugins 0 ms {"tui":"openhands","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
b01e6f9fe7154dadbef6c5497b0698b7 ↳ 7382fdead3584d38986c5ce2ed2582af container openhands:run 407347 ms {"image":"codingagentbench/openhands:1.7.0","command":["/app/.venv/bin/python","/opt/openhands_run.py","-t","Move-after-use compile error in a string concat helper; convert to borrow + clone where needed","--workspace","/workspace"],"deviation":"root+docker.sock; see module docstring","exit_code":1,"timed_out":false,"docker_sock_mounted":true,"read_only":false}
7382fdead3584d38986c5ce2ed2582af adapter_run openhands:polyglot/rust-owner-borrow-fix 407398 ms {"timeout_s":600,"plugin_stack":[],"exit_code":1}
f2c8e3236c264dc6a121375419682da6 cleanup cleanup:openhands 0 ms {}

Model calls (0)

# Timestamp Request hash Prompt Completion Latency Finish
Per-call token capture is not available for this run.

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CodingAgentBench: openhands × mistralai/mistral-small-4-119b-2603 51%