@hypothesis.given(st.lists(st.text(max_size=100), max_size=50))
>   def test_common_prefix(strings):
                   ^^^

cogapp/test_whiteutils.py:103:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox/py313/lib/python3.13/site-packages/hypothesis/internal/conjecture/engine.py:967: in run
    self._run()
.tox/py313/lib/python3.13/site-packages/hypothesis/internal/conjecture/engine.py:1540: in _run
    self.generate_new_examples()
.tox/py313/lib/python3.13/site-packages/hypothesis/internal/conjecture/engine.py:1245: in generate_new_examples
    prefix = self.generate_novel_prefix()
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/py313/lib/python3.13/site-packages/hypothesis/internal/conjecture/engine.py:760: in generate_novel_prefix
    return self.tree.generate_novel_prefix(self.random)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/py313/lib/python3.13/site-packages/hypothesis/internal/conjecture/datatree.py:781: in generate_novel_prefix
    node_value = self._draw(
.tox/py313/lib/python3.13/site-packages/hypothesis/internal/conjecture/datatree.py:892: in _draw
    value = draw_choice(choice_type, constraints, random=random)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/py313/lib/python3.13/site-packages/hypothesis/internal/conjecture/data.py:1354: in draw_choice
    return cast(ChoiceT, getattr(cd.provider, f"draw_{choice_type}")(**constraints))
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/py313/lib/python3.13/site-packages/hypothesis/internal/conjecture/providers.py:938: in draw_string
    constant := self._maybe_draw_constant(
.tox/py313/lib/python3.13/site-packages/hypothesis/internal/conjecture/providers.py:739: in _maybe_draw_constant
    assert self._local_constants is not None
           ^^^^^^^^^^^^^^^^^^^^^
/usr/local/pyenv/pyenv/versions/3.13.12/lib/python3.13/functools.py:1025: in __get__
    val = self.func(instance)
          ^^^^^^^^^^^^^^^^^^^
.tox/py313/lib/python3.13/site-packages/hypothesis/internal/conjecture/providers.py:722: in _local_constants
    return _get_local_constants()
           ^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

    def _get_local_constants() -> Constants:
        global _sys_modules_len, _local_constants

        if sys.platform == "emscripten":  # pragma: no cover
            # pyodide builds bundle the stdlib in a nonstandard location, like
            # `/lib/python312.zip/heapq.py`. To avoid identifying the entirety of
            # the stdlib as local code and slowing down on emscripten, instead return
            # that nothing is local.
            #
            # pyodide may provide some way to distinguish stdlib/third-party/local
            # code. I haven't looked into it. If they do, we should correctly implement
            # ModuleLocation for pyodide instead of this.
            return _local_constants

        count_constants = len(_local_constants)
        # We call this function once per HypothesisProvider instance, i.e. once per
        # input, so it needs to be performant. The logic here is more complicated
        # than necessary because of this.
        #
        # First, we check whether there are any new modules with a very cheap length
        # check. This check can be fooled if a module is added while another module is
        # removed, but the more correct check against tuple(sys.modules.keys()) is
        # substantially more expensive. Such a new module would eventually be discovered
        # if / when the length changes again in the future.
        #
        # If the length has changed, we find just modules we haven't seen before. Of
        # those, we find the ones which correspond to local modules, and extract their
        # constants.

        # careful: store sys.modules length when we first check to avoid race conditions
        # with other threads loading a module before we set _sys_modules_len.
        if (sys_modules_len := len(sys.modules)) != _sys_modules_len:
            # set(_seen_modules) shouldn't typically be required, but I have run into
            # a "set changed size during iteration" error here when running
            # test_provider_conformance_crosshair.
>           new_modules = set(sys.modules.values()) - set(_seen_modules)
                          ^^^^^^^^^^^^^^^^^^^^^^^^^
E           TypeError: unhashable type: 'types.SimpleNamespace'

.tox/py313/lib/python3.13/site-packages/hypothesis/internal/conjecture/providers.py:316: TypeError