Type inference regression

[Arvamer]

Following code compiles on stable but fails on nightly:

fn main() {
    let v = [1u16, 2, 3, 4];
    let idx = "1".parse().unwrap();
    println!("{:?}", v.get(idx));
}

rustc version:

rustc 1.15.0-nightly (daf8c1dfc 2016-12-05)
binary: rustc
commit-hash: daf8c1dfce3b448fc581cc319f64632ec22bd0e1
commit-date: 2016-12-05
host: x86_64-unknown-linux-gnu
release: 1.15.0-nightly
LLVM version: 3.9

[bluss]

Ah, this is from SliceIndex; <[T]>::get is generic in the index type now. Added in #36340

[Arvamer]

So that's why rustc can't infer type… It's not a big deal and it looks like it's know regression so I will just fix it in my crate, gilrs.