| error[E0658]: trait aliases are experimental |
| --> $DIR/feature-gate-trait-alias.rs:1:1 |
| | |
| LL | trait Foo = Default; |
| | ^^^^^^^^^^^^^^^^^^^^ |
| | |
| = note: see issue #41517 <https://github.com/rust-lang/rust/issues/41517> for more information |
| = help: add `#![feature(trait_alias)]` to the crate attributes to enable |
| = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date |
| |
| error: aborting due to 1 previous error |
| |
| For more information about this error, try `rustc --explain E0658`. |
