Test fails with octave 9.2.0

[opoplawski]

Getting the following:

FAIL: test_execute_stdout (__main__.OctaveKernelTests.test_execute_stdout)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/lib/python3.12/site-packages/jupyter_kernel_test/__init__.py", line 121, in test_execute_stdout
    self.assertIn("hello, world", msg["content"]["text"])
AssertionError: 'hello, world' not found in 'warning: using the fltk graphics toolkit is discouraged\r\n\r\nThe FLTK graphics toolkit is not actively maintained and has a number\r\nof limitations that are unlikely to be fixed.\r\nThe qt toolkit is recommended instead.\r\n\n'

[bnavigator]

I have the same problem. I cannot make the kernel find the qt backend inside the packaging build vm (with xvfb).