openai/codex · error · anyhow::Error

runtime code cell {runtime_cell_id} in thread {thread_id} ma

Error message

runtime code cell {runtime_cell_id} in thread {thread_id} mapped to both {existing} and {code_cell_id}

What it means

Error "runtime code cell {runtime_cell_id} in thread {thread_id} mapped to both {existing} and {code_cell_id}" thrown in openai/codex.

Source

Thrown at codex-rs/rollout-trace/src/reducer/code_cell.rs:583

        format!("code_cell:{model_visible_call_id}")
    }

    /// Records the thread-local runtime cell id to reduced code-cell id mapping.
    ///
    /// Runtime ids can repeat across threads, so callers must provide the owning
    /// thread id when creating or resolving this bridge.
    pub(super) fn record_runtime_code_cell_id(
        &mut self,
        thread_id: &str,
        runtime_cell_id: &str,
        code_cell_id: &str,
    ) -> Result<()> {
        let key = runtime_code_cell_key(thread_id, runtime_cell_id);
        if let Some(existing) = self.code_cell_ids_by_runtime.get(&key) {
            if existing == code_cell_id {
                return Ok(());
            }
            bail!(
                "runtime code cell {runtime_cell_id} in thread {thread_id} mapped to both \
                 {existing} and {code_cell_id}"
            );
        }
        self.code_cell_ids_by_runtime
            .insert(key, code_cell_id.to_string());
        Ok(())
    }

    /// Resolves a runtime cell id to the reduced code-cell id for the given thread.
    pub(super) fn code_cell_id_for_runtime_cell_id(
        &self,
        thread_id: &str,
        runtime_cell_id: &str,
        event_name: &str,
    ) -> Result<CodeCellId> {
        self.code_cell_id_for_runtime_cell_id_if_known(thread_id, runtime_cell_id)
            .with_context(|| {

View on GitHub (pinned to 339751715c)

When it happens

Trigger: Thrown at codex-rs/rollout-trace/src/reducer/code_cell.rs:583 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/aeaed57a55fcef4b. Report an issue: GitHub.