stream: avoid draining merged iter sources #8811
| Job | Run time |
|---|---|
| 1m 10s | |
| 24s | |
| 27m 1s | |
| 23m 36s | |
| 30m 23s | |
| 25m 58s | |
| 25m 43s | |
| 27m 22s | |
| 26m 26s | |
| 26m 20s | |
| 25m 19s | |
| 3h 59m 42s |
| Job | Run time |
|---|---|
| 1m 10s | |
| 24s | |
| 27m 1s | |
| 23m 36s | |
| 30m 23s | |
| 25m 58s | |
| 25m 43s | |
| 27m 22s | |
| 26m 26s | |
| 26m 20s | |
| 25m 19s | |
| 3h 59m 42s |