Add MappedArcMutexGuard to mirror MappedMutexGuard #297
| Job | Run time |
|---|---|
| 14s | |
| 23s | |
| 12s | |
| 14s | |
| 1m 37s | |
| 1m 35s | |
| 46s | |
| 43s | |
| 40s | |
| 42s | |
| 44s | |
| 46s | |
| 54s | |
| 42s | |
| 44s | |
| 33s | |
| 42s | |
| 46s | |
| 42s | |
| 43s | |
| 58s | |
| 46s | |
| 53s | |
| 44s | |
| 1m 36s | |
| 1m 36s | |
| 1m 3s | |
| 1m 36s | |
| 1m 7s | |
| 55s | |
| 1m 15s | |
| 58s | |
| 1m 0s | |
| 1m 5s | |
| 1m 2s | |
| 1m 6s | |
| 42s | |
| 32m 44s |