build issues are only displayed for the parent crate, not any subcrates

[tinaun]

Version of VSCode: 1.13.1
Version of the extension: 0.4
OS: Windows 10

Description: (rls mode)

so i have a project layout that looks like this -

a/
|- Cargo.toml
|- Cargo.lock
|- target/
|- src/
|- b/
    |- Cargo.toml
    |- src/ 
 

and writing code in a/src/ causes the problems panel to update, underlines on errors and warnings work, i can use autocomplete from external crates, all that good stuff. but - none of that works in a/b/src/. i can see error / warning messages in the rls output pane, but it isn't used anywhere else.

possibly related to #158

[KalitaAlexey]

@tinaun,
It's more related to #156.
I will not close your issue because it will prevent other duplicates.

[tinaun]

thanks. after submitting this i noticed this was mentioned in a lot of other issues, but it hadn't had an issue of its own