+error[E0635]: unknown feature `tuple_trait`
+ --> $DIR/lang-item-missing-generator.rs:2:51
+ |
+LL | #![feature(no_core, lang_items, unboxed_closures, tuple_trait)]
+ | ^^^^^^^^^^^
+
error: requires `generator` lang_item
- --> $DIR/lang-item-missing-generator.rs:15:17
+ --> $DIR/lang-item-missing-generator.rs:17:17
|
LL | pub fn abc() -> impl FnOnce(f32) {
| ^^^^^^^^^^^^^^^^
-error: aborting due to previous error
+error: aborting due to 2 previous errors
+For more information about this error, try `rustc --explain E0635`.