--- /dev/null
+warning: the feature `type_alias_impl_trait` is incomplete and may not be safe to use and/or cause compiler crashes
+ --> $DIR/type-alias-impl-trait-fns.rs:5:32
+ |
+LL | #![cfg_attr(full_tait, feature(type_alias_impl_trait))]
+ | ^^^^^^^^^^^^^^^^^^^^^
+ |
+ = note: `#[warn(incomplete_features)]` on by default
+ = note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information
+
+warning: 1 warning emitted
+