generators also depend on variables live across suspension points. This means
that although the ambient environment may be `Send` or `Sync`, the generator
itself may not be due to internal variables live across `yield` points being
- not-`Send` or not-`Sync`. Note that generators, like closures, do
+ not-`Send` or not-`Sync`. Note that generators do
not implement traits like `Copy` or `Clone` automatically.
* Whenever a generator is dropped it will drop all captured environment