ices/46511.rs: fixed with errors

[github-actions]

Issue: rust-lang/rust#46511

struct Foo<'a>
{
    a: [u8; std::mem::size_of::<&'a mut u8>()]
}

=== stdout ===
=== stderr ===
error[E0601]: `main` function not found in crate `46511`
 --> /home/runner/work/glacier/glacier/ices/46511.rs:1:1
  |
1 | / struct Foo<'a>
2 | | {
3 | |     a: [u8; std::mem::size_of::<&'a mut u8>()]
4 | | }
  | |_^ consider adding a `main` function to `/home/runner/work/glacier/glacier/ices/46511.rs`

error[E0658]: a non-static lifetime is not allowed in a `const`
 --> /home/runner/work/glacier/glacier/ices/46511.rs:3:34
  |
3 |     a: [u8; std::mem::size_of::<&'a mut u8>()]
  |                                  ^^
  |
  = note: see issue #44580 <https://github.com/rust-lang/rust/issues/44580> for more information
  = help: add `#![feature(const_generics)]` to the crate attributes to enable

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0601, E0658.
For more information about an error, try `rustc --explain E0601`.
==============