nautechsystems/nautilus_trader · error

Failed to stop one or more trader components after startup f

Error message

Failed to stop one or more trader components after startup failure: {}

What it means

Aggregated teardown report in stop_components_after_start_failure: after a failed startup every component still gets a stop attempt; any per-component stop or subscription-cleanup failures are collected into this joined error.

Source

Thrown at crates/system/src/trader.rs:1161

            if let Err(e) = self.cleanup_exec_algorithm_subscriptions(exec_algorithm_id) {
                errors.push(format!(
                    "execution algorithm {exec_algorithm_id} subscription cleanup: {e:#}"
                ));
            }
        }

        for strategy_id in &self.strategy_ids {
            log::debug!("Stopping strategy {strategy_id} after startup failure");
            if let Err(e) = Self::stop_component_if_active(strategy_id.inner()) {
                errors.push(format!("strategy {strategy_id}: {e:#}"));
            }
        }

        if errors.is_empty() {
            Ok(())
        } else {
            anyhow::bail!(
                "Failed to stop one or more trader components after startup failure: {}",
                errors.join("; ")
            )
        }
    }

    fn stop_component_if_active(component_id: Ustr) -> anyhow::Result<()> {
        if !matches!(
            component_state(&component_id)?,
            ComponentState::Starting | ComponentState::Running
        ) {
            return Ok(());
        }

        stop_component(&component_id)
    }

    /// Resets all registered components.

View on GitHub (pinned to 18893faf8b)

Solutions

1. Inspect the collected per-component errors in the message
2. Stop or dispose the failing components manually before retrying startup

When it happens

Trigger: Thrown at crates/system/src/trader.rs:1161 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of nautechsystems/nautilus_trader@18893faf8b (2026-09-08). Data as JSON: /api/errors/186a1e42e7fbb72e. Report an issue: GitHub.