iter::Zip is now invariant #35727
Description
The following compiles on stable but not beta:
use std::iter::Zip;
fn test<'a, A, B>(iter: Zip<&'static A, &'static B>) -> Zip<&'a A, &'a B> { iter }
fn main() {}{{ message }}
The following compiles on stable but not beta:
use std::iter::Zip;
fn test<'a, A, B>(iter: Zip<&'static A, &'static B>) -> Zip<&'a A, &'a B> { iter }
fn main() {}