IntoIterator for fixed-size arrays shouldn't borrow the original

[jdm]

fn main() {
    let _v = {
        [0, 1].into_iter()
    }.collect::<Vec<_>>();
}

This yields:

rustc 1.14.0 (e8a012324 2016-12-16)
error: borrowed value does not live long enough
 --> <anon>:5:9
  |
5 |         [0, 1].into_iter()
  |         ^^^^^^ temporary value created here
6 |     }.collect::<Vec<_>>();
  |                          - temporary value only lives until here
7 | }
  | - temporary value needs to live until here
  |
  = note: consider using a `let` binding to increase its lifetime

This is very confusing conceptually, since into_iter() is supposed to consume the value it iterates over. Presumably this happens because IntoIterator is only implemented for &[T; N] and &mut [T; N], and not [T; N].

[malbarbo]

Related #25725

[jdm]

Looks like an exact duplicate. Thanks!