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#![feature(type_alias_impl_trait)]
trait OpaqueTrait {}
impl<T> OpaqueTrait for T {}
type OpaqueType = impl OpaqueTrait;
#[define_opaque(OpaqueType)]
fn mk_opaque() -> OpaqueType {
|| 0
}
trait AnotherTrait {}
impl<T: Send> AnotherTrait for T {}
impl AnotherTrait for OpaqueType {}
//~^ ERROR conflicting implementations of trait `AnotherTrait`
fn main() {}
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