error[E0277]: the trait bound `impl Future<Output = ()>: Generator<_>` is not satisfied
  --> $DIR/generator-not-future.rs:31:21
   |
LL |     takes_generator(async_fn());
   |     --------------- ^^^^^^^^^^ the trait `Generator<_>` is not implemented for `impl Future<Output = ()>`
   |     |
   |     required by a bound introduced by this call
   |
note: required by a bound in `takes_generator`
  --> $DIR/generator-not-future.rs:18:39
   |
LL | fn takes_generator<ResumeTy>(_g: impl Generator<ResumeTy, Yield = (), Return = ()>) {}
   |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `takes_generator`

error[E0277]: the trait bound `impl Future<Output = ()>: Generator<_>` is not satisfied
  --> $DIR/generator-not-future.rs:33:21
   |
LL |     takes_generator(returns_async_block());
   |     --------------- ^^^^^^^^^^^^^^^^^^^^^ the trait `Generator<_>` is not implemented for `impl Future<Output = ()>`
   |     |
   |     required by a bound introduced by this call
   |
note: required by a bound in `takes_generator`
  --> $DIR/generator-not-future.rs:18:39
   |
LL | fn takes_generator<ResumeTy>(_g: impl Generator<ResumeTy, Yield = (), Return = ()>) {}
   |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `takes_generator`

error[E0277]: the trait bound `{async block@$DIR/generator-not-future.rs:35:21: 35:29}: Generator<_>` is not satisfied
  --> $DIR/generator-not-future.rs:35:21
   |
LL |     takes_generator(async {});
   |     --------------- ^^^^^^^^ the trait `Generator<_>` is not implemented for `{async block@$DIR/generator-not-future.rs:35:21: 35:29}`
   |     |
   |     required by a bound introduced by this call
   |
note: required by a bound in `takes_generator`
  --> $DIR/generator-not-future.rs:18:39
   |
LL | fn takes_generator<ResumeTy>(_g: impl Generator<ResumeTy, Yield = (), Return = ()>) {}
   |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `takes_generator`

error[E0277]: `impl Generator<Yield = (), Return = ()>` is not a future
  --> $DIR/generator-not-future.rs:39:18
   |
LL |     takes_future(returns_generator());
   |     ------------ ^^^^^^^^^^^^^^^^^^^ `impl Generator<Yield = (), Return = ()>` is not a future
   |     |
   |     required by a bound introduced by this call
   |
   = help: the trait `Future` is not implemented for `impl Generator<Yield = (), Return = ()>`
   = note: impl Generator<Yield = (), Return = ()> must be a future or must implement `IntoFuture` to be awaited
note: required by a bound in `takes_future`
  --> $DIR/generator-not-future.rs:17:26
   |
LL | fn takes_future(_f: impl Future<Output = ()>) {}
   |                          ^^^^^^^^^^^^^^^^^^^ required by this bound in `takes_future`

error[E0277]: `{generator@$DIR/generator-not-future.rs:41:18: 41:23}` is not a future
  --> $DIR/generator-not-future.rs:41:18
   |
LL |       takes_future(|ctx| {
   |  _____------------_^
   | |     |
   | |     required by a bound introduced by this call
LL | |
LL | |         ctx = yield ();
LL | |     });
   | |_____^ `{generator@$DIR/generator-not-future.rs:41:18: 41:23}` is not a future
   |
   = help: the trait `Future` is not implemented for `{generator@$DIR/generator-not-future.rs:41:18: 41:23}`
   = note: {generator@$DIR/generator-not-future.rs:41:18: 41:23} must be a future or must implement `IntoFuture` to be awaited
note: required by a bound in `takes_future`
  --> $DIR/generator-not-future.rs:17:26
   |
LL | fn takes_future(_f: impl Future<Output = ()>) {}
   |                          ^^^^^^^^^^^^^^^^^^^ required by this bound in `takes_future`

error: aborting due to 5 previous errors

For more information about this error, try `rustc --explain E0277`.