Tests fail with Python 3.11

[icemac]

BUG/PROBLEM REPORT (OR OTHER COMMON ISSUE)

What I did:

Run tox -epy311

What I expect to happen:

Successful test run.

What actually happened:

$ tox -epy311
py311 develop-inst-noop: /.../zope.exceptions
py311 installed: alabaster==0.7.12,Babel==2.9.1,certifi==2021.10.8,charset-normalizer==2.0.11,docutils==0.17.1,idna==3.3,imagesize==1.3.0,Jinja2==3.0.3,MarkupSafe==2.0.1,packaging==21.3,Pygments==2.11.2,pyparsing==3.0.7,pytz==2021.3,repoze.sphinx.autointerface==0.8,requests==2.27.1,six==1.16.0,snowballstemmer==2.2.0,Sphinx==4.4.0,sphinxcontrib-applehelp==1.0.2,sphinxcontrib-devhelp==1.0.2,sphinxcontrib-htmlhelp==2.0.0,sphinxcontrib-jsmath==1.0.1,sphinxcontrib-qthelp==1.0.3,sphinxcontrib-serializinghtml==1.1.5,urllib3==1.26.8,-e git+https://github.com/zopefoundation/zope.exceptions@cb2d21400c95b73909b1145674c08fed31b8759a#egg=zope.exceptions,zope.interface==5.4.0,zope.testrunner==5.4.0
py311 run-test-pre: PYTHONHASHSEED='591231223'
py311 run-test: commands[0] | zope-testrunner --test-path=src -vc
Running tests at level 1
Running zope.testrunner.layer.UnitTests tests:
  Set up zope.testrunner.layer.UnitTests in 0.000 seconds.
  Running:
..........................

Failure in test test_recursion_failure (zope.exceptions.tests.test_exceptionformatter.Test_format_exception)
Traceback (most recent call last):
  File "/.../lib/python3.11/unittest/case.py", line 57, in testPartExecutor
    yield
  File "/.../lib/python3.11/unittest/case.py", line 591, in run
    self._callTestMethod(testMethod)
  File "/.../lib/python3.11/unittest/case.py", line 547, in _callTestMethod
    if method() is not None:
  File "/.../zope.exceptions/src/zope/exceptions/tests/test_exceptionformatter.py", line 705, in test_recursion_failure
    self.assertEqual(s.splitlines()[-2],
  File "/.../lib/python3.11/unittest/case.py", line 841, in assertEqual
    assertion_func(first, second, msg=msg)
  File "/.../lib/python3.11/unittest/case.py", line 1192, in assertMultiLineEqual
    self.fail(self._formatMessage(msg, standardMsg))
  File "/.../lib/python3.11/unittest/case.py", line 671, in fail
    raise self.failureException(msg)
AssertionError: '    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^' != '    raise FormatterException("Formatter failed")'
-     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+     raise FormatterException("Formatter failed")


......................

Error in test test_formatException_recursion_in_tb_stack (zope.exceptions.tests.test_exceptionformatter.TextExceptionFormatterTests)
Traceback (most recent call last):
  File "/.../lib/python3.11/unittest/case.py", line 57, in testPartExecutor
    yield
  File "/.../lib/python3.11/unittest/case.py", line 591, in run
    self._callTestMethod(testMethod)
  File "/.../lib/python3.11/unittest/case.py", line 547, in _callTestMethod
    if method() is not None:
  File "/.../zope.exceptions/src/zope/exceptions/tests/test_exceptionformatter.py", line 347, in test_formatException_recursion_in_tb_stack
    lines = fmt.formatException(ValueError, err, tb)
(Recursive formatException() stopped, trying traceback.format_tb)
  File "/.../zope.exceptions/src/zope/exceptions/exceptionformatter.py", line 186, in formatException
    result.extend(traceback.format_tb(tb))
                  ^^^^^^^^^^^^^^^^^^^^^^^
  File "/.../lib/python3.11/traceback.py", line 59, in format_tb
    return extract_tb(tb, limit=limit).format()
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/.../lib/python3.11/traceback.py", line 74, in extract_tb
    return StackSummary._extract_from_extended_frame_gen(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/.../lib/python3.11/traceback.py", line 416, in _extract_from_extended_frame_gen
    for f, (lineno, end_lineno, colno, end_colno) in frame_gen:
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/.../lib/python3.11/traceback.py", line 353, in _walk_tb_with_full_positions
    positions = _get_code_position(tb.tb_frame.f_code, tb.tb_lasti)
                                                       ^^^^^^^^^^^
AttributeError: 'DummyTB' object has no attribute 'tb_lasti'

...............................
  Ran 79 tests with 1 failures, 1 errors, 0 skipped in 0.015 seconds.
Tearing down left over layers:
  Tear down zope.testrunner.layer.UnitTests in 0.000 seconds.

Tests with errors:
   test_formatException_recursion_in_tb_stack (zope.exceptions.tests.test_exceptionformatter.TextExceptionFormatterTests)

Tests with failures:
   test_recursion_failure (zope.exceptions.tests.test_exceptionformatter.Test_format_exception)
ERROR: InvocationError for command /.../zope.exceptions/.tox/py311/bin/zope-testrunner --test-path=src -vc (exited with code 1)
_______________________________________________________________________ summary _______________________________________________________________________
ERROR:   py311: commands failed

What version of Python and Zope/Addons I am using:

Python 3.11.0a4 against master.