ices/75158.rs: fixed with errors

[github-actions]

Issue: rust-lang/rust#75158

struct S<T> { x: [T; !0] }

pub fn f() -> usize {
    std::mem::size_of::<S<u8>>()
}

fn main() {
    let x = f();
}

=== stdout ===
=== stderr ===
warning: unused variable: `x`
 --> /home/runner/work/glacier/glacier/ices/75158.rs:8:9
  |
8 |     let x = f();
  |         ^ help: if this is intentional, prefix it with an underscore: `_x`
  |
  = note: `#[warn(unused_variables)]` on by default

warning: field is never read: `x`
 --> /home/runner/work/glacier/glacier/ices/75158.rs:1:15
  |
1 | struct S<T> { x: [T; !0] }
  |               ^^^^^^^^^^
  |
  = note: `#[warn(dead_code)]` on by default

error: the type `[u8; 18446744073709551615]` is too big for the current architecture

error: aborting due to previous error; 2 warnings emitted

==============

[Alexendoo]

I can't figure out what fixed this one, it doesn't ICE on earlier versions when I try to bisect it

[camelid]

Based on Godbolt, it's fixed on nightly but not on beta.

[camelid]

Hmm, but it seems to be fixed on all versions on the Playground. This is weird...

[JohnTitor]

I can't figure out what fixed this one, it doesn't ICE on earlier versions when I try to bisect it

Because playground's run is not the same as cargo run exactly IIRC. This ICE is certainly fixed between nightly-2020-11-15 and nightly-2020-11-16 so I'm going to merge.