working copy: return Box<dyn LockedWorkingCopy> from `start_mutatio…
#1652
| Job | Run time |
|---|---|
| 1m 1s | |
| 1m 1s |
Box<dyn LockedWorkingCopy> from `start_mutatio…
#1652
| Job | Run time |
|---|---|
| 1m 1s | |
| 1m 1s |