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#![feature(generic_associated_types)]
trait Foo {
type F<'a>;
fn identity<'a>(t: &'a Self::F<'a>) -> &'a Self::F<'a> { t }
}
impl <T, T1> Foo for T {
//~^ ERROR: the type parameter `T1` is not constrained
type F<T1> = &[u8];
//~^ ERROR: the name `T1` is already used for
//~| ERROR: `&` without an explicit lifetime name cannot be used here
}
fn main() {}
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