RLS in VSCode doesn't show autocomplete's variants for external crates

Autocomplete good works with src and std, but it’s doesn’t see my external crates, although doesn’t mark code as error. Where is a problem? What should I do?

Sorry for bad eng.

Could you give more details?
Which Version of VSCode and RLS?

By experiment I found out that RLS bad works with SOME crates. Сoincidence or not, but problems was only with c-libs.

p.s.
toolchain
nightly 06.01.18
vscode
1.20.1