test_rebuild and test_error_messages failing on travis

test_rebuild is failing here: https://github.com/sphinx-gallery/sphinx-gallery/blob/ce5a58cfde1c030364c0bd34b21f2ba00b83896f/sphinx_gallery/tests/test_full.py#L636

when checking that the example plot_numpy_matplotlib which we modify above, has a different mtime:

sphinx_gallery/tests/test_full.py:387: in _assert_mtimes

    assert np.abs(op.getmtime(orig) - op.getmtime(new)) > 0.1

E   AssertionError: assert 0.0 > 0.1

E    +  where 0.0 = <ufunc 'absolute'>((1607961214.223356 - 1607961214.223356))

test_error_messages failing here:

_ test_error_messages[plot_scraper_broken-.*ValueError.*zero-size array to reduction.*] _

sphinx_gallery/tests/test_full.py:661: in test_error_messages

    assert re.match(want, rst) is not None

E   AssertionError: assert None is not None

@larsoner you probably know more about this but otherwise I can take a look next week.

[larsoner]

Azure has better single job restart control and we already have some YAML so let’s just do that.

[lucyleeow]

Closing as it seems it’s due to this test not being reliable in CI