key i32 to_bson error

[koshkin-kna]

let mut x: HashMap<i32, i32> = HashMap::new();
x.insert(2, 4);
bson2::to_bson(&x).unwrap();

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thread 'main' panicked at 'called Result::unwrap() on an Err value: InvalidMapKeyType(I32(2))'

[saghm]

Hello! BSON only allows strings as keys in documents, so you won't be able to convert a HashMap with integer keys to a Document.