Implemented __del__ to clean up hanging coroutines
#533
| Job | Run time |
|---|---|
| 9m 4s | |
| 9m 49s | |
| 10m 16s | |
| 9m 6s | |
| 10m 39s | |
| 10m 38s | |
| 8m 4s | |
| 10m 41s | |
| 10m 36s | |
| 7m 28s | |
| 10m 33s | |
| 9m 54s | |
| 7m 57s | |
| 10m 33s | |
| 10m 7s | |
| 2h 25m 25s |