warning: trait objects without an explicit `dyn` are deprecated
  --> $DIR/dynless-turbofish-e0191-issue-91997.rs:4:13
   |
LL |     let _ = MyIterator::next;
   |             ^^^^^^^^^^
   |
   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
   = note: `#[warn(bare_trait_objects)]` on by default
help: if this is a dyn-compatible trait, use `dyn`
   |
LL |     let _ = <dyn MyIterator>::next;
   |             ++++           +

error[E0191]: the value of the associated type `Item` in `Iterator` must be specified
  --> $DIR/dynless-turbofish-e0191-issue-91997.rs:4:13
   |
LL |     let _ = MyIterator::next;
   |             ^^^^^^^^^^ help: specify the associated type: `MyIterator::<Item = Type>`

error: aborting due to 1 previous error; 1 warning emitted

For more information about this error, try `rustc --explain E0191`.