| error[E0658]: specialization is unstable (see issue #31844) | |
| --> $DIR/specialization-feature-gate-default.rs:17:1 | |
| | | |
| LL | / default impl<T> Foo for T { //~ ERROR specialization is unstable | |
| LL | | fn foo(&self) {} | |
| LL | | } | |
| | |_^ | |
| | | |
| = help: add #![feature(specialization)] to the crate attributes to enable | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0658`. |