openai/codex · error · anyhow::Error

runner pipe closed before spawn_ready

Error message

runner pipe closed before spawn_ready

What it means

Error "runner pipe closed before spawn_ready" thrown in openai/codex.

Source

Thrown at codex-rs/windows-sandbox-rs/src/elevated/runner_client.rs:162

        Err(err) => Err(err),
    }
}

impl RunnerTransport {
    pub(crate) fn send_spawn_request(&mut self, request: SpawnRequest) -> Result<()> {
        let spawn_request = FramedMessage {
            version: IPC_PROTOCOL_VERSION,
            message: Message::SpawnRequest {
                payload: Box::new(request),
            },
        };
        write_frame(&mut self.pipe_write, &spawn_request)
    }

    pub(crate) fn read_spawn_ready(&mut self) -> Result<()> {
        wait_for_complete_frame(&self.pipe_read, RUNNER_SPAWN_READY_TIMEOUT)?;
        let msg = read_frame(&mut self.pipe_read)?
            .ok_or_else(|| anyhow::anyhow!("runner pipe closed before spawn_ready"))?;
        match msg.message {
            Message::SpawnReady { .. } => Ok(()),
            Message::Error { payload } => Err(RunnerStartupError::new(payload).into()),
            other => Err(anyhow::anyhow!(
                "expected spawn_ready from runner, got {other:?}"
            )),
        }
    }

    pub(crate) fn into_files(self) -> (File, File) {
        (self.pipe_write, self.pipe_read)
    }
}

fn try_take_completed_connect_result(
    connect_thread: &mut Option<thread::JoinHandle<()>>,
    connect_result_rx: &mpsc::Receiver<Result<()>>,
    thread_handle: HANDLE,

View on GitHub (pinned to 339751715c)

When it happens

Trigger: Thrown at codex-rs/windows-sandbox-rs/src/elevated/runner_client.rs:162 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/4e7858c49ba604f0. Report an issue: GitHub.