Raw identifiers in use statements affect the ordering

[ChrisGreenaway]

For example:

use websocket::r#async::futures::Stream;
use websocket::client::ClientBuilder;
use websocket::result::WebSocketError;

gets reformatted as:

use websocket::client::ClientBuilder;
use websocket::r#async::futures::Stream;
use websocket::result::WebSocketError;

[scampi]

fixed in rustfmt-2.0 branch

[calebcartwright]

Note that this is still need of being backported, but with the version gates applied