Don't merge crates when imports_granularity="Module"
#2564
| Job | Run time |
|---|---|
| 1m 32s | |
| 1m 23s | |
| 2m 55s |
imports_granularity="Module"
#2564
| Job | Run time |
|---|---|
| 1m 32s | |
| 1m 23s | |
| 2m 55s |