openai/codex · error · anyhow::Error

inference start {inference_call_id} used thread {thread_id},

Error message

inference start {inference_call_id} used thread {thread_id}, but codex turn {codex_turn_id} belongs to {}

What it means

Error "inference start {inference_call_id} used thread {thread_id}, but codex turn {codex_turn_id} belongs to {}" thrown in openai/codex.

Source

Thrown at codex-rs/rollout-trace/src/reducer/inference.rs:63

            .contains_key(&started.inference_call_id)
        {
            bail!(
                "duplicate inference start for {}",
                started.inference_call_id
            );
        }

        let inference_call_id = started.inference_call_id.clone();
        let thread_id = started.thread_id.clone();
        let codex_turn_id = started.codex_turn_id.clone();
        let request_payload = started.request_payload.clone();
        let Some(turn) = self.rollout.codex_turns.get(&codex_turn_id) else {
            bail!(
                "inference start {inference_call_id} referenced unknown codex turn {codex_turn_id}"
            );
        };
        if turn.thread_id != thread_id {
            bail!(
                "inference start {inference_call_id} used thread {thread_id}, \
                 but codex turn {codex_turn_id} belongs to {}",
                turn.thread_id
            );
        }

        let request_item_ids = self.reduce_inference_request(
            wall_time_unix_ms,
            &inference_call_id,
            &thread_id,
            &codex_turn_id,
            &request_payload,
        )?;

        self.thread_mut(&thread_id)?;

        self.rollout.inference_calls.insert(
            inference_call_id.clone(),

View on GitHub (pinned to 339751715c)

When it happens

Trigger: Thrown at codex-rs/rollout-trace/src/reducer/inference.rs:63 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of openai/codex@339751715c (2026-08-25). Data as JSON: /api/errors/a65ef22cc022a14e. Report an issue: GitHub.