Give the _d_this and independent-var-count caches leak-free references. NFC #8458
| Job | Run time |
|---|---|
| 19s | |
| 5m 18s | |
| 6m 30s | |
| 3m 42s | |
| 5m 59s | |
| 5m 7s | |
| 4m 24s | |
| 4m 4s | |
| 7m 31s | |
| 5m 51s | |
| 4m 42s | |
| 4m 49s | |
| 4m 6s | |
| 3m 59s | |
| 4m 40s | |
| 5m 54s | |
| 6m 0s | |
| 8m 32s | |
| 25m 21s | |
| 3m 23s | |
| 5m 9s | |
| 3m 51s | |
| 18m 19s | |
| 3m 36s | |
| 5m 35s | |
| 3m 57s | |
| 5m 55s | |
| 14m 2s | |
| 5m 0s | |
| 5m 55s | |
| 3m 44s | |
| 5m 28s | |
| 1h 8m 15s | |
| 3m 44s | |
| 8m 20s | |
| 4h 41m 1s |