error[E0277]: the trait bound `{gen closure@$DIR/iter-macro-not-async-closure.rs:26:21: 26:28}: AsyncFnOnce()` is not satisfied
  --> $DIR/iter-macro-not-async-closure.rs:32:34
   |
LL | ...n!(call_async_once(f));
   |       --------------- ^ unsatisfied trait bound
   |       |
   |       required by a bound introduced by this call
   |
   = help: the trait `AsyncFnOnce()` is not implemented for `{gen closure@$DIR/iter-macro-not-async-closure.rs:26:21: 26:28}`
note: required by a bound in `call_async_once`
  --> $DIR/iter-macro-not-async-closure.rs:21:34
   |
LL | ...pl AsyncFnOnce()) {
   |       ^^^^^^^^^^^^^ required by this bound in `call_async_once`

error[E0277]: the trait bound `{gen closure@$DIR/iter-macro-not-async-closure.rs:26:21: 26:28}: AsyncFnOnce()` is not satisfied
  --> $DIR/iter-macro-not-async-closure.rs:32:18
   |
LL | ...n!(call_async_once(f));
   |       ^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
   |
   = help: the trait `AsyncFnOnce()` is not implemented for `{gen closure@$DIR/iter-macro-not-async-closure.rs:26:21: 26:28}`
note: required by a bound in `call_async_once`
  --> $DIR/iter-macro-not-async-closure.rs:21:34
   |
LL | ...pl AsyncFnOnce()) {
   |       ^^^^^^^^^^^^^ required by this bound in `call_async_once`

error[E0277]: the trait bound `{gen closure@$DIR/iter-macro-not-async-closure.rs:26:21: 26:28}: AsyncFnOnce()` is not satisfied
  --> $DIR/iter-macro-not-async-closure.rs:32:13
   |
LL | ... = pin!(call_async_once(f));
   |       ^^^^^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
   |
   = help: the trait `AsyncFnOnce()` is not implemented for `{gen closure@$DIR/iter-macro-not-async-closure.rs:26:21: 26:28}`
note: required by a bound in `call_async_once`
  --> $DIR/iter-macro-not-async-closure.rs:21:34
   |
LL | ...pl AsyncFnOnce()) {
   |       ^^^^^^^^^^^^^ required by this bound in `call_async_once`
   = note: this error originates in the macro `pin` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0277]: the trait bound `{gen closure@$DIR/iter-macro-not-async-closure.rs:26:21: 26:28}: AsyncFnOnce()` is not satisfied
  --> $DIR/iter-macro-not-async-closure.rs:32:13
   |
LL | ... = pin!(call_async_once(f));
   |       ^^^^^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
   |
   = help: the trait `AsyncFnOnce()` is not implemented for `{gen closure@$DIR/iter-macro-not-async-closure.rs:26:21: 26:28}`
note: required by a bound in `call_async_once`
  --> $DIR/iter-macro-not-async-closure.rs:21:34
   |
LL | ...pl AsyncFnOnce()) {
   |       ^^^^^^^^^^^^^ required by this bound in `call_async_once`
   = note: this error originates in the macro `pin` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0277]: the trait bound `{gen closure@$DIR/iter-macro-not-async-closure.rs:26:21: 26:28}: AsyncFnOnce()` is not satisfied
  --> $DIR/iter-macro-not-async-closure.rs:37:5
   |
LL |     ...::noop()));
   |     ...^^^^^^^^^^ unsatisfied trait bound
   |
   = help: the trait `AsyncFnOnce()` is not implemented for `{gen closure@$DIR/iter-macro-not-async-closure.rs:26:21: 26:28}`
note: required by a bound in `call_async_once`
  --> $DIR/iter-macro-not-async-closure.rs:21:34
   |
LL | ...pl AsyncFnOnce()) {
   |       ^^^^^^^^^^^^^ required by this bound in `call_async_once`

error: aborting due to 5 previous errors

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