Hello everyone. Why RUST compiler could start complaining, that method try_next cannot be called on mongodb::Cursor<> due to unsatisfied trait bounds, when I added Vec<Rc> fields to my model? I added this field: #[serde(skip)] pub out_relations: Vec<Rc<Relation>>, And this code which used to be …

Hi @Yuri_Gor , this is a similar issue to that described in this thread . In short, Cursor<T> type only implements Stream if the T implements DeserializeOwned , Unpin , Send , and Sync . Because Rc is !Send and !Sync, adding the Rc makes it so the Cursor no longer implements Stream. To work around t…

Yuri_Gor (Yuri Gor) November 4, 2022, 4:14pm 3

Thank you! That explains everything.

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Method try_next cannot be called on mongodb::Cursor<> due to unsatisfied trait bounds