ices/95307.rs: fixed with errors

=== stdout ===
=== stderr ===
error: this file contains an unclosed delimiter
 --> /home/runner/work/glacier/glacier/ices/95307.rs:8:13
  |
1 | pub trait C{async fn new(val: T) -> [u8; _];
  |            - unclosed delimiter
...
5 | fn foo<T: Tr>() -> usize {
  |                          - unclosed delimiter
...
8 | fn main(){}
  |             ^

error: non-item in item list
 --> /home/runner/work/glacier/glacier/ices/95307.rs:2:3
  |
1 | pub trait C{async fn new(val: T) -> [u8; _];
  |            - item list starts here
2 |   as Trait<&'a u32> Collate<MASK> for () = [0u8; 4];
  |   ^^ non-item starts here
...
8 | fn main(){}
  |             - item list ends here

error[E0706]: functions in traits cannot be declared `async`
 --> /home/runner/work/glacier/glacier/ices/95307.rs:1:13
  |
1 | pub trait C{async fn new(val: T) -> [u8; _];
  |             -----^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |             |
  |             `async` because of this
  |
  = note: `async` trait functions are not currently supported
  = note: consider using the `async-trait` crate: https://crates.io/crates/async-trait

error[E0412]: cannot find type `T` in this scope
 --> /home/runner/work/glacier/glacier/ices/95307.rs:1:31
  |
1 | pub trait C{async fn new(val: T) -> [u8; _];
  |                               ^ not found in this scope

error[E0658]: using `_` for array lengths is unstable
 --> /home/runner/work/glacier/glacier/ices/95307.rs:1:42
  |
1 | pub trait C{async fn new(val: T) -> [u8; _];
  |                                          ^
  |
  = note: see issue #85077 <rust-lang/rust#85077> for more information
  = help: add `#![feature(generic_arg_infer)]` to the crate attributes to enable

error: in expressions, `_` can only be used on the left-hand side of an assignment
 --> /home/runner/work/glacier/glacier/ices/95307.rs:1:42
  |
1 | pub trait C{async fn new(val: T) -> [u8; _];
  |                                          ^ `_` not allowed here

error: aborting due to 6 previous errors

Some errors have detailed explanations: E0412, E0658, E0706.
For more information about an error, try `rustc --explain E0412`.
==============