nautechsystems/nautilus_trader · error · anyhow::Error

failed to register Polymarket resolve poll: {e}

Error message

failed to register Polymarket resolve poll: {e}

What it means

Thrown when tasks.spawn(future) fails while registering the resolve-poll background task in register_resolve_poll_task. The task group refused admission (closed/shutting down), so connect() aborts rather than run a data client missing resolution polling.

Source

Thrown at crates/adapters/polymarket/src/data/lifecycle.rs:412

                            continue;
                        }

                        let _ = fetch_and_apply_resolutions_by_condition_ids(
                            &gamma_client,
                            &clob_public_client,
                            &resolve_ctx,
                            &selection.condition_ids,
                            ResolveBatchErrorMode::Continue,
                            false,
                        )
                        .await;
                    }
                }
            }
        };
        self.tasks
            .spawn(future)
            .map_err(|e| anyhow::anyhow!("failed to register Polymarket resolve poll: {e}"))?;
        Ok(())
    }

    pub(super) async fn await_tasks_with_timeout(
        &self,
        timeout: tokio::time::Duration,
    ) -> anyhow::Result<()> {
        self.tasks.begin_shutdown();
        let graceful_timeout = (timeout / 2).min(TASK_GRACEFUL_SHUTDOWN_TIMEOUT);
        let abort_timeout = timeout.saturating_sub(graceful_timeout);
        self.tasks
            .finish_shutdown(graceful_timeout, abort_timeout)
            .await
            .map_err(|e| anyhow::anyhow!("Failed to terminate Polymarket data tasks: {e}"))?;
        Ok(())
    }

    pub(super) fn start_client(&mut self) {

View on GitHub (pinned to 18893faf8b)

Solutions

1. Serialize lifecycle calls; wait for disconnect to fully finish before reconnecting
2. Retry connect() so start_generation() reopens the task group
3. Verify the runtime is not being dropped during connect

match client.connect().await {
    Err(e) if e.to_string().contains("failed to register Polymarket resolve poll") => {
        // retry on a fresh generation
        client.connect().await.context("resolve poll registration failed twice")?;
    }
    r => r?,
}

When it happens

Trigger: tasks.spawn() returns Err during connect_client's registration phase — task group closed by concurrent shutdown or runtime teardown between spawner acquisition and spawn.

Common situations: Disconnect racing connect; process shutting down mid-connect; earlier registration failure closed the generation window.

Understand the failure class

Background: "Invalid state transition" errors: "status must be X, actually Y", "already rejected/charging/uninstalled", "cannot ... while running" — what they mean when a library rejects your call — this error's family across 31 libraries.

Related errors

• failed to register Polymarket instrument refresh: {e}
• Failed to start RTDS message loop: {e}; startup rollback fai
• Failed to start Polymarket WebSocket handler task: {e}
• Failed to register Betfair keep-alive task: {e}
• Failed to register Betfair reconnect task: {e}

AI-assisted analysis of nautechsystems/nautilus_trader@18893faf8b (2026-09-08). Data as JSON: /api/errors/825abf6536b263fa. Report an issue: GitHub.