Buildbot failure in test_importlib UTF-16 tests

Traceback (most recent call last):
  File "/home/dje/cpython-buildarea/3.x.edelsohn-rhel-z.refleak/build/Lib/test/test_importlib/resources/test_functional.py", line 144, in test_open_text
    self.assertEndsWith(  # ignore the BOM
    ~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^
        f.read(),
        ^^^^^^^^^
    ...<2 lines>...
        ),
        ^^
    )
    ^
  File "/home/dje/cpython-buildarea/3.x.edelsohn-rhel-z.refleak/build/Lib/test/test_importlib/resources/test_functional.py", line 50, in assertEndsWith
    self.assertEqual(string[-len(suffix) :], suffix)
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: '\x00H\x00e\x00l\x00l\x00o\x00,\x00 \x00U\[61 chars]00\n' != 'H\x00e\x00l\x00l\x00o\x00,\x00 \x00U\x00T[61 chars]\x00'
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Traceback (most recent call last):
  File "/home/dje/cpython-buildarea/3.x.edelsohn-rhel-z.refleak/build/Lib/test/test_importlib/resources/test_read.py", line 46, in test_read_text_with_errors
    self.assertEqual(
    ~~~~~~~~~~~~~~~~^
        result,
        ^^^^^^^
    ...<2 lines>...
        '\x00w\x00o\x00r\x00l\x00d\x00!\x00\n\x00',
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
AssertionError: '\x00H\x00e\x00l\x00l\x00o\x00,\x00 \x00U\[61 chars]00\n' != 'H\x00e\x00l\x00l\x00o\x00,\x00 \x00U\x00T[61 chars]\x00'
- �H�e�l�l�o�,� �U�T�F�-�1�6� �w�o�r�l�d�!�
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+ H�e�l�l�o�,� �U�T�F�-�1�6� �w�o�r�l�d�!�
- 
+ �


Traceback (most recent call last):
  File "/home/dje/cpython-buildarea/3.x.edelsohn-rhel-z.refleak/build/Lib/test/test_importlib/resources/test_functional.py", line 92, in test_read_text
    self.assertEndsWith(  # ignore the BOM
    ~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^
        resources.read_text(
        ^^^^^^^^^^^^^^^^^^^^
    ...<6 lines>...
        ),
        ^^
    )
    ^
  File "/home/dje/cpython-buildarea/3.x.edelsohn-rhel-z.refleak/build/Lib/test/test_importlib/resources/test_functional.py", line 50, in assertEndsWith
    self.assertEqual(string[-len(suffix) :], suffix)
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: '\x00H\x00e\x00l\x00l\x00o\x00,\x00 \x00U\[61 chars]00\n' != 'H\x00e\x00l\x00l\x00o\x00,\x00 \x00U\x00T[61 chars]\x00'
- �H�e�l�l�o�,� �U�T�F�-�1�6� �w�o�r�l�d�!�
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+ H�e�l�l�o�,� �U�T�F�-�1�6� �w�o�r�l�d�!�
- 
+ �


Traceback (most recent call last):
  File "/home/dje/cpython-buildarea/3.x.edelsohn-rhel-z.refleak/build/Lib/test/test_importlib/resources/test_open.py", line 49, in test_open_text_with_errors
    self.assertEqual(
    ~~~~~~~~~~~~~~~~^
        result,
        ^^^^^^^
    ...<2 lines>...
        '\x00w\x00o\x00r\x00l\x00d\x00!\x00\n\x00',
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
AssertionError: '\x00H\x00e\x00l\x00l\x00o\x00,\x00 \x00U\[61 chars]00\n' != 'H\x00e\x00l\x00l\x00o\x00,\x00 \x00U\x00T[61 chars]\x00'
- �H�e�l�l�o�,� �U�T�F�-�1�6� �w�o�r�l�d�!�
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+ H�e�l�l�o�,� �U�T�F�-�1�6� �w�o�r�l�d�!�
- 
+ �