Compiler suggestion for attempt to move out of indexed content

[leonardo-m]

This code:

use std::collections::HashMap;
fn encode2(vals: &[u32], encoding: &HashMap<u32, String>) -> String {
    vals.iter().map(|k| encoding[k]).collect()
}
fn main() {}

It doesn't compile:

error[E0507]: cannot move out of indexed content
 --> ...\test.rs:3:25
  |
3 |     vals.iter().map(|k| encoding[k]).collect()
  |                         ^^^^^^^^^^^ cannot move out of indexed content

    error: aborting due to previous error

Perhaps the compiler could suggest the programmer to add a &* :

vals.iter().map(|k| &*encoding[k]).collect()

[Phlosioneer]

Duplicate of #25507?

[Mark-Simulacrum]

Yes, I'm going to close in favor of #25507. Thanks!