Add missing const to some STL conversion methods
#351
| Job | Run time |
|---|---|
| 14m 39s | |
| 14m 39s | |
| 6m 40s | |
| 6m 40s | |
| 6m 52s | |
| 6m 52s | |
| 6m 45s | |
| 6m 45s | |
| 6m 57s | |
| 6m 57s | |
| 13m 35s | |
| 13m 35s | |
| 5m 47s | |
| 5m 47s | |
| 5m 30s | |
| 5m 30s | |
| 5m 30s | |
| 5m 30s | |
| 9m 56s | |
| 9m 56s | |
| 16m 11s | |
| 16m 11s | |
| 15m 22s | |
| 15m 34s | |
| 15m 29s | |
| 15m 29s | |
| 16m 1s | |
| 16m 1s | |
| 16m 8s | |
| 16m 8s | |
| 5h 22m 56s |