openai/codex · error · anyhow::Error

code cell end referenced unknown cell {code_cell_id}

Error message

code cell end referenced unknown cell {code_cell_id}

What it means

Error "code cell end referenced unknown cell {code_cell_id}" thrown in openai/codex.

Source

Thrown at codex-rs/rollout-trace/src/reducer/code_cell.rs:319

        &mut self,
        seq: RawEventSeq,
        wall_time_unix_ms: i64,
        code_cell_id: CodeCellId,
        status: CodeCellRuntimeStatus,
    ) -> Result<()> {
        if !self.rollout.code_cells.contains_key(&code_cell_id) {
            if self.pending_code_cell_starts.contains_key(&code_cell_id) {
                self.queue_code_cell_lifecycle_event(
                    code_cell_id,
                    PendingCodeCellLifecycleEvent {
                        seq,
                        wall_time_unix_ms,
                        kind: PendingCodeCellLifecycleEventKind::Ended { status },
                    },
                );
                return Ok(());
            }
            bail!("code cell end referenced unknown cell {code_cell_id}");
        }
        self.end_code_cell(seq, wall_time_unix_ms, code_cell_id, status)
    }

    fn end_code_cell(
        &mut self,
        seq: RawEventSeq,
        wall_time_unix_ms: i64,
        code_cell_id: CodeCellId,
        status: CodeCellRuntimeStatus,
    ) -> Result<()> {
        let Some(cell) = self.rollout.code_cells.get_mut(&code_cell_id) else {
            bail!("code cell end referenced unknown cell {code_cell_id}");
        };

        if cell.initial_response_at_unix_ms.is_none() {
            cell.initial_response_at_unix_ms = Some(wall_time_unix_ms);
            cell.initial_response_seq = Some(seq);

View on GitHub (pinned to 339751715c)

When it happens

Trigger: Thrown at codex-rs/rollout-trace/src/reducer/code_cell.rs:319 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/b1580c5d4355e225. Report an issue: GitHub.