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pub trait Trait<'a, T> {}
pub struct Struct<T>;
pub enum Enum<T> {}
pub union Union<T> {
f1: usize,
}
impl<'a, T> Struct<T> for Trait<'a, T> {}
//~^ ERROR expected trait, found struct `Struct`
//~| WARNING trait objects without an explicit `dyn` are deprecated
//~| WARNING this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
impl<'a, T> Enum<T> for Trait<'a, T> {}
//~^ ERROR expected trait, found enum `Enum`
impl<'a, T> Union<T> for Trait<'a, T> {}
//~^ ERROR expected trait, found union `Union`
fn main() {}
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