Function surface_error_line 

fn surface_error_line(
    block_id: &str,
    exit_code: Option<i32>,
    line: &str,
    broker: Option<&Broker>,
    mstore: &Option<Arc<Store>>,
    event_bus: &Option<Arc<EventBus>>,
) -> bool

Classify a final error line with classify_exit_line and, if it is a failure, surface_failure it. Returns whether it was surfaced.