No type hint after `.filter()`

[0x7CFE]

My code contains some FP-style transformations on the string slice.

I've noticed that the following code snippet is not parsed completely. RLS provides type hints for split filter and e and x inside the closures, but all remaining tokens such as collect or map are not parsed.

let slice = "\"1,2,3,,4\"";

let result: Vec<i32> = slice[1 .. slice.len()-1] // strip quotes
    .split(',')
    .filter(|e| e.len() > 0) // a,,b
    .map(|x| x.parse().map_err(|_| "parse error"))
    .collect::<Result<_,_>>()
    .unwrap()

I use latest versions both for Rustc and RLS.

rustc 1.18.0-nightly (2b4c91158 2017-04-25)
binary: rustc
commit-hash: 2b4c911581099e247a68b3a8adc782d778f5190b
commit-date: 2017-04-25
host: x86_64-unknown-linux-gnu
release: 1.18.0-nightly
LLVM version: 4.0

HEAD from the RLS repository:

commit 7599a6f8fee46ac96bde8d0be4ea99d56bb01510
Author: Jonathan Turner <jonathandturner@users.noreply.github.com>
Date:   Wed Apr 26 14:59:28 2017 +1200

    Update README.md

[nrc]

Tracked in rust-dev-tools/rls-analysis#111