Make sure Unset class always returns the same instance in ``__new…
#2
| Job | Run time |
|---|---|
| 19s | |
| 12s | |
| 12s | |
| 16s | |
| 13s | |
| 13s | |
| 44s | |
| 48s | |
| 46s | |
| 31s | |
| 54s | |
| 50s | |
| 1m 0s | |
| 1m 33s | |
| 7s | |
| 40s | |
| 13s | |
| 12s | |
| 13s | |
| 10s | |
| 39s | |
| 10m 45s |