error[E0644]: closure/generator type that references itself
  --> $DIR/generator-yielding-or-returning-itself.rs:15:34
   |
LL |       want_cyclic_generator_return(|| {
   |  __________________________________^
LL | |
LL | |         if false { yield None.unwrap(); }
LL | |         None.unwrap()
LL | |     })
   | |_____^ cyclic type of infinite size
   |
   = note: closures cannot capture themselves or take themselves as argument;
           this error may be the result of a recent compiler bug-fix,
           see https://github.com/rust-lang/rust/issues/46062 for more details

error[E0271]: type mismatch resolving `<[generator@$DIR/generator-yielding-or-returning-itself.rs:28:33: 32:6 _] as std::ops::Generator>::Yield == [generator@$DIR/generator-yielding-or-returning-itself.rs:28:33: 32:6 _]`
  --> $DIR/generator-yielding-or-returning-itself.rs:28:5
   |
LL | pub fn want_cyclic_generator_yield<T>(_: T)
   |        ---------------------------
LL |     where T: Generator<Yield = T, Return = ()>
   |                        --------- required by this bound in `want_cyclic_generator_yield`
...
LL |     want_cyclic_generator_yield(|| {
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ cyclic type of infinite size
   |
   = note: closures cannot capture themselves or take themselves as argument;
           this error may be the result of a recent compiler bug-fix,
           see https://github.com/rust-lang/rust/issues/46062 for more details

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0271, E0644.
For more information about an error, try `rustc --explain E0271`.