Another problem I've noticed: I can pass-v to the test runner and it will give a verbose output of the tests run, but if I pass--fast-ci or--slow-ci, the-v seems to be ignored:

stan@raspberrypi:~/cpython $ ./python -W error -m test --fast-ci test_importlib --dont-add-python-opts -v== CPython 3.15.0a0 (heads/gh-138313:43357c2, Sep 7 2025, 18:10:29) [GCC 12.2.0]== Linux-6.12.20+rpt-rpi-v8-aarch64-with-glibc2.36 little-endian== Python build: release== cwd: /home/stan/cpython/build/test_python_worker_3504242æ== CPU count: 4== encodings: locale=ISO-8859-1 FS=utf-8== resources: all,-cpuUsing random seed: 277571860:00:00 load avg: 0.36 Run 1 test in parallel using 1 worker process (timeout: 10 min, worker timeout: 15 min)0:00:10 load avg: 0.46 [1/1] test_importlib passed== Tests result: SUCCESS ==10 slowest tests:- test_importlib: 10.5 sec1 test OK.Total duration: 10.5 secTotal tests: run=1,349 skipped=19Total test files: run=1/1Result: SUCCESSstan@raspberrypi:~/cpython $ ./python -W error -m test --slow-ci test_importlib --dont-add-python-opts -v== CPython 3.15.0a0 (heads/gh-138313:43357c2, Sep 7 2025, 18:10:29) [GCC 12.2.0]== Linux-6.12.20+rpt-rpi-v8-aarch64-with-glibc2.36 little-endian== Python build: release== cwd: /home/stan/cpython/build/test_python_worker_3504340æ== CPU count: 4== encodings: locale=ISO-8859-1 FS=utf-8== resources: allUsing random seed: 9585520360:00:00 load avg: 0.30 Run 1 test in parallel using 1 worker process (timeout: 20 min, worker timeout: 25 min)0:00:10 load avg: 0.48 [1/1] test_importlib passed== Tests result: SUCCESS ==10 slowest tests:- test_importlib: 10.4 sec1 test OK.Total duration: 10.4 secTotal tests: run=1,349 skipped=19Total test files: run=1/1Result: SUCCESS

So I'm not at all confident on which tests are being run because the test runner is only reporting running one test.

Originally posted by@jaraco in#138313

Linked PRs

• gh-139208: Fix regrtest --fast-ci --verbose #139240
• [3.14] gh-139208: Fix regrtest --fast-ci --verbose (GH-139240) #139260
• [3.13] gh-139208: Fix regrtest --fast-ci --verbose (GH-139240) #139261