Today we released Visual Studio 2015 Update 2 CTP. Our focus for this release has been stability and performance, along with responding to feedback you’ve given us on Visual Studio 2015 RTM and Update 1. 

private IServiceProvider IocConfig(IServiceCollection services)
        {
            var container = new Container();
            container.Configure(config =>
            {
                //config.Populate(services); ---> این اضافی است
            });

            container.Populate(services);
            return container.GetInstance<IServiceProvider>();
        }