darwin: Fix racy leakage of memory during teardown #511
| Job | Run time |
|---|---|
| 9m 3s | |
| 1m 4s | |
| 6m 1s | |
| 2m 55s | |
| 3m 32s | |
| 56s | |
| 2m 2s | |
| 4m 2s | |
| 1m 11s | |
| 3m 12s | |
| 2m 44s | |
| 3m 4s | |
| 3m 59s | |
| 4m 50s | |
| 2m 28s | |
| 1m 13s | |
| 2m 57s | |
| 2m 6s | |
| 2m 57s | |
| 1m 1s | |
| 3m 9s | |
| 2m 59s | |
| 58s | |
| 2m 5s | |
| 2m 5s | |
| 5m 11s | |
| 3m 4s | |
| 2m 36s | |
| 5m 56s | |
| 1m 10s | |
| 2m 37s | |
| 3m 5s | |
| 1m 11s | |
| 2m 46s | |
| 2m 38s | |
| 2m 19s | |
| 2m 44s | |
| 1h 47m 50s |