gh-146632: make traceback handle illformed ModuleNotFoundError
#187379
| Job | Run time |
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| 12s | |
| 4m 8s | |
| 21m 33s | |
| 4m 19s | |
| 3m 10s | |
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| 4m 24s | |
| 2m 54s | |
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| 18m 51s | |
| 2m 58s | |
| 8m 29s | |
| 24m 47s | |
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| 27s | |
| 13m 42s | |
| 10m 23s | |
| 10s | |
| 13m 42s | |
| 18m 21s | |
| 5m 55s | |
| 3m 5s | |
| 20m 0s | |
| 1m 59s | |
| 2m 6s | |
| 17m 7s | |
| 12m 5s | |
| 22m 24s | |
| 11m 2s | |
| 0s | |
| 27m 23s | |
| 17m 25s | |
| 27m 3s | |
| 4m 55s | |
| 0s | |
| 4s | |
| 6h 56m 12s |