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error: future cannot be sent between threads safely
  --> $DIR/missing-send-bound.rs:16:20
   |
LL |     assert_is_send(test::<T>());
   |                    ^^^^^^^^^^^ future returned by `test` is not `Send`
   |
   = help: within `impl Future<Output = ()>`, the trait `Send` is not implemented for `impl Future<Output = ()>`
note: future is not `Send` as it awaits another future which is not `Send`
  --> $DIR/missing-send-bound.rs:12:5
   |
LL |     T::bar().await;
   |     ^^^^^^^^ await occurs here on type `impl Future<Output = ()>`, which is not `Send`
note: required by a bound in `assert_is_send`
  --> $DIR/missing-send-bound.rs:20:27
   |
LL | fn assert_is_send(_: impl Send) {}
   |                           ^^^^ required by this bound in `assert_is_send`

error: aborting due to previous error