(Rust) Types are not always highlighted

[Serial-ATA]

Describe the issue
Types will sometimes not receive any highlighting.

Which language seems to have the issue?
Rust

Are you using highlight or highlightAuto?
highlight

Sample Code to Reproduce

let vec: Vec<isize> = Vec::new();
                   // ^^^ Not highlighted (The first `Vec` as well as `new` are highlighted)
if 100 > i32::MAX {}
      // ^^^ Not highlighted

https://jsfiddle.net/k7xe4vsz/1/

Expected behavior
All types are highlighted.

Additional context
I noticed this when trying to upgrade from v9.5.0 to v11.5.1. Prior to the upgrade, both lines were properly highlighted.

[joshgoebel]

If you'd like to review the fix...

[Serial-ATA]

Thanks for fixing this so quickly! It works perfectly. 🙂