hatch swallows test failures ?

[Carreau]

It seem that hatch (or something else?) jus ignore some failure.

see this run of current main branch:

https://github.com/ipython/ipykernel/actions/runs/13286863326/job/37097508006 which is aborted,
and this comment:

#1322 (comment)

That point to a run with actual failures that appear as passing.

[davidbrochart]

It's because we rerun last failed tests here.

[Carreau]

That seems wrong, it can hide test that modify global state and make subsequent test to fail.
Plus the abort I linked to does not seem to be reran.

[davidbrochart]

Plus the abort I linked to does not seem to be reran.

You mean this? https://github.com/ipython/ipykernel/actions/runs/13286863326/job/37097508006
Yes it is rerun (look for --lf).