gh-152168: Don't skip test_bigmem if _testcapi is missing
#270693
| Job | Run time |
|---|---|
| 5s | |
| 4s | |
| 9s |
test_bigmem if _testcapi is missing
#270693
| Job | Run time |
|---|---|
| 5s | |
| 4s | |
| 9s |