File: issue-55872-2.rs

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rustc 1.85.0%2Bdfsg3-1
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//@ edition:2018

#![feature(impl_trait_in_assoc_type)]

pub trait Bar {
    type E: Send;

    fn foo<T>() -> Self::E;
}

impl<S> Bar for S {
    type E = impl std::marker::Send;
    fn foo<T>() -> Self::E {
        async {}
        //~^ ERROR type parameter `T` is part of concrete type but not used in parameter list for the `impl Trait` type alias
        //~| ERROR type parameter `T` is part of concrete type but not used in parameter list for the `impl Trait` type alias
    }
}

fn main() {}