Don't merge crates when imports_granularity="Module"
#2564
| Job | Run time |
|---|---|
| 2m 7s | |
| 1m 47s | |
| 1m 41s | |
| 2m 53s | |
| 2m 30s | |
| 4m 55s | |
| 1m 35s | |
| 2m 3s | |
| 3m 0s | |
| 3m 37s | |
| 2m 5s | |
| 1m 38s | |
| 3m 10s | |
| 1m 44s | |
| 34m 45s |