xai-org/grok-build · error · io::Error

session persistence actor stopped before flush acknowledgeme

Error message

session persistence actor stopped before flush acknowledgement

What it means

Error "session persistence actor stopped before flush acknowledgement" thrown in xai-org/grok-build.

Source

Thrown at crates/codegen/xai-grok-shell/src/session/acp_session_impl/updates.rs:546

        skip_all,
        fields(session_id = %self.session_info.id.0)
    )]
    pub(super) async fn flush_to_disk(&self) -> std::io::Result<()> {
        if let Err(e) = crate::session::replay_events::flush_replay_actor(&self.event_tx).await {
            tracing::warn!(?e, "flush_replay_actor failed");
        }
        let (tx, rx) = tokio::sync::oneshot::channel();
        if self
            .notifications
            .persistence_tx
            .send(PersistenceMsg::FlushAndAck { respond_to: tx })
            .is_err()
        {
            return Ok(());
        }
        match rx.await {
            Ok(result) => result,
            Err(_) => Err(std::io::Error::new(
                std::io::ErrorKind::BrokenPipe,
                "session persistence actor stopped before flush acknowledgement",
            )),
        }
    }
    /// Extracts the update type name and relevant parameters for logging
    fn extract_update_info(
        update: &acp::SessionUpdate,
    ) -> (Option<String>, Option<serde_json::Value>) {
        match update {
            acp::SessionUpdate::UserMessageChunk(_) => (Some("UserMessageChunk".to_string()), None),
            acp::SessionUpdate::AgentMessageChunk(_) => {
                (Some("AgentMessageChunk".to_string()), None)
            }
            acp::SessionUpdate::AgentThoughtChunk(_) => {
                (Some("AgentThoughtChunk".to_string()), None)
            }
            acp::SessionUpdate::ToolCall(tool_call) => (

View on GitHub (pinned to bc7f02eddd)

When it happens

Trigger: Thrown at crates/codegen/xai-grok-shell/src/session/acp_session_impl/updates.rs:546 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of xai-org/grok-build@bc7f02eddd (2026-08-31). Data as JSON: /api/errors/d94338c1f494fd8b. Report an issue: GitHub.