rust/tests/ui/impl-trait/recursive-coroutine.stderr

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error[E0720]: cannot resolve opaque type
--> $DIR/recursive-coroutine.rs:5:13
|
LL | fn foo() -> impl Coroutine<Yield = (), Return = ()> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ recursive opaque type
...
LL | let mut gen = Box::pin(foo());
| ------- coroutine captures itself here
error: aborting due to previous error
For more information about this error, try `rustc --explain E0720`.