Fix handling for poll calls to non-generator futures
#669
| Job | Run time |
|---|---|
| 1m 11s | |
| 1m 23s | |
| 1m 18s | |
| 2m 7s | |
| 5m 59s |
poll calls to non-generator futures
#669
| Job | Run time |
|---|---|
| 1m 11s | |
| 1m 23s | |
| 1m 18s | |
| 2m 7s | |
| 5m 59s |