Fix protect Array#map against concurrent mutation
#12733
| Job | Run time |
|---|---|
| 51m 49s | |
| 28m 48s | |
| 1h 20m 37s |
Array#map against concurrent mutation
#12733
| Job | Run time |
|---|---|
| 51m 49s | |
| 28m 48s | |
| 1h 20m 37s |