ices/89864.rs: fixed with no errors

[github-actions]

Issue: rust-lang/rust#89864

#![crate_type = "lib"]
#![feature(fmt_internals)]

use core::{fmt, marker::PhantomData};

pub trait WrapperTrait {
    type Assoc;
}

pub trait Trait {
    type Assoc;
}

pub struct Ice<T>(<<Dynamic<T> as WrapperTrait>::Assoc as Trait>::Assoc);

fn ice<T>(i: Ice<T>)
where
    <<Dynamic<T> as WrapperTrait>::Assoc as Trait>::Assoc: fmt::Debug,
{
    fmt::ArgumentV1::new(&i.0, fmt::Debug::fmt);
}

pub struct TraitImplementor;

impl Trait for TraitImplementor {
    type Assoc = ConcreteAssoc;
}

pub struct ConcreteAssoc;

impl<T> WrapperTrait for Dynamic<T> {
    type Assoc = TraitImplementor;
}

pub struct Dynamic<T>(PhantomData<T>);

=== stdout ===
=== stderr ===
warning: function is never used: `ice`
  --> /home/runner/work/glacier/glacier/ices/89864.rs:16:4
   |
16 | fn ice<T>(i: Ice<T>)
   |    ^^^
   |
   = note: `#[warn(dead_code)]` on by default

warning: 1 warning emitted

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