warning: this method call resolves to `<&Box<[T]> as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<Box<[T]> as IntoIterator>::into_iter` in Rust 2024
  --> $DIR/into-iter-on-boxed-slices-lint.rs:10:11
   |
LL |     boxed.into_iter();
   |           ^^^^^^^^^
   |
   = warning: this changes meaning in Rust 2024
   = note: `#[warn(boxed_slice_into_iter)]` on by default
help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
   |
LL |     boxed.iter();
   |           ~~~~
help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
   |
LL |     IntoIterator::into_iter(boxed);
   |     ++++++++++++++++++++++++     ~

warning: this method call resolves to `<&Box<[T]> as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<Box<[T]> as IntoIterator>::into_iter` in Rust 2024
  --> $DIR/into-iter-on-boxed-slices-lint.rs:13:29
   |
LL |     Box::new(boxed.clone()).into_iter();
   |                             ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
   |
   = warning: this changes meaning in Rust 2024

warning: this method call resolves to `<&Box<[T]> as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<Box<[T]> as IntoIterator>::into_iter` in Rust 2024
  --> $DIR/into-iter-on-boxed-slices-lint.rs:16:39
   |
LL |     Box::new(Box::new(boxed.clone())).into_iter();
   |                                       ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
   |
   = warning: this changes meaning in Rust 2024

warning: 3 warnings emitted