Invalid suggestion for explicit_iter_loop, which results in compiler error [trait bounds]

[Luro02]

Code to reproduce the error

#![deny(clippy::explicit_iter_loop)]

fn takes_iterator<T>(iterator: &T)
where
    for<'a> &'a T: IntoIterator<Item = &'a String>
{
    for i in iterator.into_iter() {
        println!("{}", i);
    }
}


fn main() {
    let iterator = vec!["hello".to_string(), "world".to_string(), "yeah".to_string()];

    dbg!(takes_iterator(&iterator));
}

playground

Output from clippy:

    Checking playground v0.0.1 (/playground)
error: it is more concise to loop over references to containers instead of using explicit iteration methods
 --> src/main.rs:7:14
  |
7 |     for i in iterator.into_iter() {
  |              ^^^^^^^^^^^^^^^^^^^^ help: to write this more concisely, try: `&iterator`
  |
note: lint level defined here
 --> src/main.rs:1:9
  |
1 | #![deny(clippy::explicit_iter_loop)]
  |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
  = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_iter_loop

error: aborting due to previous error

error: could not compile `playground`.

To learn more, run the command again with --verbose.

Following this suggestion would result in a compiler error:

#![deny(clippy::explicit_iter_loop)]

fn takes_iterator<T>(iterator: &T)
where
    for<'a> &'a T: IntoIterator<Item = &'a String>
{
    for i in &iterator {
        println!("{}", i);
    }
}

playground

   Compiling playground v0.0.1 (/playground)
error[E0277]: `&&T` is not an iterator
 --> src/main.rs:7:14
  |
7 |     for i in &iterator {
  |              ^^^^^^^^^ `&&T` is not an iterator
  |
  = help: the trait `std::iter::Iterator` is not implemented for `&&T`
  = note: required by `std::iter::IntoIterator::into_iter`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0277`.
error: could not compile `playground`.

To learn more, run the command again with --verbose.

The correct suggestion would be to replace iterator.into_iter() with iterator (which does make sense, because the for loop is syntax sugar for that)

#![deny(clippy::explicit_iter_loop)]

fn takes_iterator<T>(iterator: &T)
where
    for<'a> &'a T: IntoIterator<Item = &'a String>
{
    for i in iterator {
        println!("{}", i);
    }
}

playground