Comment by kibwen

Agreed that `Pin` is imposing by dint of trying to provide "more fundamental" guarantees than Rust was originally designed for (see my sibling comment on this topic). Though ideally in the long run I'd hope that no regular user would ever have to encounter it (right now I think it may show up in some contexts related to futures, but as Rust's async story matures I would hope to see that need diminish).