如何从MassTransit快递路由单活动中获取例外？

public class ExpressRouteConsumer : IConsumer<ExpressRouteActivity>
{
    public async Task Consume(ConsumeContext<ExpressRouteActivity> context)
    {
        try
        {
            // 处理快递路由单活动的逻辑
        }
        catch (Exception ex)
        {
            // 获取例外信息
            var exceptionMessage = ex.Message;
            var stackTrace = ex.StackTrace;
            
            // 进一步处理例外，例如记录日志或发送通知
        }
    }
}

var busControl = Bus.Factory.CreateUsingRabbitMq(cfg =>
{
    var host = cfg.Host(new Uri("rabbitmq://localhost/"), h =>
    {
        h.Username("guest");
        h.Password("guest");
    });

    cfg.ReceiveEndpoint(host, "express_route_queue", e =>
    {
        e.Consumer<ExpressRouteConsumer>();
    });
});

busControl.Start();