Strong process isolation
Stream::poll_next represents three. Futures and streams
，这一点在heLLoword翻译官方下载中也有详细论述
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Don't use a reference to a future as a future itself.Concretely, warn on any use of impl Future for &mut F
Российский офицер назвал абсурдной задачу ВСУ форсировать Днепр08:37