I'm trying to connect to an Atlas Cloud using the MongoDB Rust Driver, and I'm having no success at all.

1) If I use a project with Rocket Web Framework, adding MongoDB creates a Ring Dependency issue, that I just can't get over.

2) If I start a new project rustup update to 1.43 the async functions complain:

let client = Client::with_options(client_options)?;

3) the sync version can't find a database function:

let mut client = Client::with_uri_str("mongodb+srv://User:Password@usavital01.hg9ih.azure.mongodb.net/slam");
let database = client.database("slam");

^^^^^^^^ method not found in `std::result::Result<mongodb::sync::client::Client, mongodb::error::Error>

let collection = database.collection("books");