refactor: move more internals to async/await
#1490
| Job | Run time |
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| 30s | |
| 3m 51s | |
| 14m 40s | |
| 3m 43s | |
| 12m 37s | |
| 3m 48s | |
| 13m 25s | |
| 11m 54s | |
| 12m 4s | |
| 5m 21s | |
| 12m 20s | |
| 12m 30s | |
| 5m 51s | |
| 11m 37s | |
| 12m 19s | |
| 12m 18s | |
| 13m 17s | |
| 1m 32s | |
| 12m 30s | |
| 4m 23s | |
| 0s | |
| 3h 0m 30s |