error[E0061]: this method takes 1 argument but 0 arguments were supplied
  --> $DIR/issue-102645.rs:15:22
   |
LL |     Pin::new(&mut b).resume();
   |                      ^^^^^^-- argument #1 of type `()` is missing
   |
note: method defined here
  --> $SRC_DIR/core/src/ops/coroutine.rs:LL:COL
help: provide the argument
   |
LL |     Pin::new(&mut b).resume(());
   |                            ~~~~

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0061`.