No autocomplete popup in closures

[cfeitong]

Version of VSCode: 1.12.2 Version of the extension: 0.3.14 OS: macOs Sierra

Description: In the following

    let pwd = path::Path::new(".");
    let output = pwd
                .read_dir()
                .unwrap()
                .map(|entry| entry.$) // cursor here
                .collect::<Vec<_>>();

It seems rls successfully infers the type of entry, but provides no autocomplete when I press ".".

[JWo1F]

@KalitaAlexey fix it, please! :disappointed: Linux x64