When reading this project's wiki [0], it mentions that Kanal (another channel implementation) uses an optimization that "makes [the] async API not cancellation-safe". I wonder if this is the same / related issue to the recent HN thread on "future lock" [1]. I hadn't heard of this cancellation safety issue prior to that other HN thread.
[0]: https://github.com/frostyplanet/crossfire-rs/wiki#kanal [1]: https://news.ycombinator.com/item?id=45774086
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