pytorch - 💡(How to fix) Fix DISABLED test_tree_map_with_path_multiple_trees (main.TestPythonPytree)

pytorch2026-05-20 07:55:13

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Traceback (most recent call last): File "/__w/pytorch/pytorch/test/test_pytree.py", line 1386, in test_tree_map_with_path_multiple_trees class ACustomPytree: File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2619, in call result = self._torchdynamo_orig_backend( frame, cache_entry, self.hooks, frame_state, skip=1 ) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2310, in call result = self._inner_convert( frame, cache_entry, hooks, frame_state, skip=skip + 1 ) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 777, in call result = _compile( frame.f_code, ...<18 lines>... convert_frame_box=self._box, ) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2159, in _compile raise InternalTorchDynamoError( f"{type(e).qualname}: {str(e)}" ).with_traceback(e.traceback) from None File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2094, in _compile guarded_code, tracer_output = compile_inner(code, one_graph, hooks) ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_utils_internal.py", line 96, in wrapper_function return function(*args, **kwargs) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1679, in compile_inner result = _compile_inner(code, one_graph, hooks) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1739, in _compile_inner dynamo_output = compile_frame( code, ...<11 lines>... package=package, ) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1584, in compile_frame bytecode, tracer_output = transform_code_object(code, transform) ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/bytecode_transformation.py", line 1766, in transform_code_object tracer_output = transformations(instructions, code_options) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1555, in transform tracer_output = trace_frame( code, ...<14 lines>... package=package, ) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 368, in _fn return fn(*args, **kwargs) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 954, in trace_frame run_tracer() ~~~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 935, in run_tracer tracer.run() ~~~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1883, in run while self.step(): ~~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1536, in step self.dispatch_table[inst.opcode](self, inst) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper return inner_fn(self, inst) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4386, in CALL self._call(inst) ~~~~~~~~~~^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4377, in _call self.call_function(fn, args, kwargs) ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1433, in call_function self.push(fn.call_function(self, args, kwargs)) # type: ignore[arg-type] ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward return getattr(self.realize(), name)(*args, **kwargs) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 854, in call_function return super().call_function(tx, args, kwargs) ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 500, in call_function return tx.inline_user_function_return(self, [*self.self_args(), *args], kwargs) # type: ignore[attr-defined] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1460, in inline_user_function_return return InliningInstructionTranslator.inline_call(self, fn, args, kwargs) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/dynamo/symbolic_convert.py", line 5547, in inline_call return tracer.inline_call() ~~~~~~~~~~~~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/dynamo/symbolic_convert.py", line 5776, in inline_call self.run() ~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1883, in run while self.step(): ~~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1536, in step self.dispatch_table[inst.opcode](self, inst) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper return inner_fn(self, inst) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4386, in CALL self._call(inst) ~~~~~~~~~~^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4377, in _call self.call_function(fn, args, kwargs) ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1433, in call_function self.push(fn.call_function(self, args, kwargs)) # type: ignore[arg-type] ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 500, in call_function return tx.inline_user_function_return(self, [*self.self_args(), *args], kwargs) # type: ignore[attr-defined] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1460, in inline_user_function_return return InliningInstructionTranslator.inline_call(self, fn, args, kwargs) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/dynamo/symbolic_convert.py", line 5547, in inline_call return tracer.inline_call() ~~~~~~~~~~~~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/dynamo/symbolic_convert.py", line 5776, in inline_call self.run() ~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1883, in run while self.step(): ~~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1536, in step self.dispatch_table[inst.opcode](self, inst) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper return inner_fn(self, inst) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4386, in CALL self._call(inst) ~~~~~~~~~~^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4377, in _call self.call_function(fn, args, kwargs) ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1433, in call_function self.push(fn.call_function(self, args, kwargs)) # type: ignore[arg-type] ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward return getattr(self.realize(), name)(*args, **kwargs) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 854, in call_function return super().call_function(tx, args, kwargs) ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 500, in call_function return tx.inline_user_function_return(self, [*self.self_args(), *args], kwargs) # type: ignore[attr-defined] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1460, in inline_user_function_return return InliningInstructionTranslator.inline_call(self, fn, args, kwargs) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/dynamo/symbolic_convert.py", line 5547, in inline_call return tracer.inline_call() ~~~~~~~~~~~~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/dynamo/symbolic_convert.py", line 5776, in inline_call self.run() ~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1883, in run while self.step(): ~~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1536, in step self.dispatch_table[inst.opcode](self, inst) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper return inner_fn(self, inst) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4386, in CALL self._call(inst) ~~~~~~~~~~^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4377, in _call self.call_function(fn, args, kwargs) ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1433, in call_function self.push(fn.call_function(self, args, kwargs)) # type: ignore[arg-type] ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward return getattr(self.realize(), name)(*args, **kwargs) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/user_defined.py", line 1014, in call_function constant_args = check_constant_args(args, kwargs) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/utils.py", line 2897, in check_constant_args return all(x.is_python_constant() for x in itertools.chain(args, kwargs.values())) ^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/utils.py", line 2897, in <genexpr> return all(x.is_python_constant() for x in itertools.chain(args, kwargs.values())) ~~~~~~~~~~~~~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward return getattr(self.realize(), name)(*args, **kwargs) ~~~~~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 115, in realize self._cache.realize() ~~~~~~~~~~~~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 49, in realize self.vt = builder.VariableBuilder( ~~~~~~~~~~~~~~~~~~~~~~~~ tx, self.source, allow_lazy_constant=False ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ )(self.value) ~^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 534, in call return self._call_impl(value) ~~~~~~~~~~~~~~~^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 571, in _call_impl vt = self._wrap(value) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 928, in _wrap result = dict( build_key_value(i, k, v) for i, k, v in enumerate_items_with_dict_position(value) ) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 930, in <genexpr> for i, k, v in enumerate_items_with_dict_position(value) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/utils.py", line 3013, in <genexpr> return ((i, k, v) for i, (k, v) in enumerate(items)) ~~~~~~~~~^^^^^^^ torch._dynamo.exc.InternalTorchDynamoError: RuntimeError: dictionary changed size during iteration

from user code: File "/__w/pytorch/pytorch/test/test_pytree.py", line 1385, in torch_dynamo_resume_in_test_tree_map_with_path_multiple_trees_at_1386 @dataclass ^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/dataclasses.py", line 1442, in dataclass return wrap(cls) File "/opt/conda/envs/py_3.14/lib/python3.14t/dataclasses.py", line 1432, in wrap return _process_class(cls, init, repr, eq, order, unsafe_hash, ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/dataclasses.py", line 1130, in _process_class func_builder = _FuncBuilder(globals)

Set TORCHDYNAMO_VERBOSE=1 for the internal stack trace (please do this especially if you're reporting a bug to PyTorch). For even more developer context, set TORCH_LOGS="+dynamo"

To execute this test, run the following from the base repo dir: PYTORCH_TEST_WITH_DYNAMO=1 python test/test_pytree.py TestPythonPytree.test_tree_map_with_path_multiple_trees

This message can be suppressed by setting PYTORCH_PRINT_REPRO_ON_FAILURE=0

Root Cause

This test was disabled because it is failing in CI. See recent examples and the most recent trunk workflow logs.

Fix Action

Fix / Workaround

Traceback (most recent call last):
  File "/__w/pytorch/pytorch/test/test_pytree.py", line 1386, in test_tree_map_with_path_multiple_trees
    class ACustomPytree:
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2619, in __call__
    result = self._torchdynamo_orig_backend(
        frame, cache_entry, self.hooks, frame_state, skip=1
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2310, in __call__
    result = self._inner_convert(
        frame, cache_entry, hooks, frame_state, skip=skip + 1
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 777, in __call__
    result = _compile(
        frame.f_code,
    ...<18 lines>...
        convert_frame_box=self._box,
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2159, in _compile
    raise InternalTorchDynamoError(
        f"{type(e).__qualname__}: {str(e)}"
    ).with_traceback(e.__traceback__) from None
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2094, in _compile
    guarded_code, tracer_output = compile_inner(code, one_graph, hooks)
                                  ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_utils_internal.py", line 96, in wrapper_function
    return function(*args, **kwargs)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1679, in compile_inner
    result = _compile_inner(code, one_graph, hooks)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1739, in _compile_inner
    dynamo_output = compile_frame(
        code,
    ...<11 lines>...
        package=package,
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1584, in compile_frame
    bytecode, tracer_output = transform_code_object(code, transform)
                              ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/bytecode_transformation.py", line 1766, in transform_code_object
    tracer_output = transformations(instructions, code_options)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1555, in transform
    tracer_output = trace_frame(
        code,
    ...<14 lines>...
        package=package,
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 368, in _fn
    return fn(*args, **kwargs)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 954, in trace_frame
    run_tracer()
    ~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 935, in run_tracer
    tracer.run()
    ~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1883, in run
    while self.step():
          ~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1536, in step
    self.dispatch_table[inst.opcode](self, inst)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper
    return inner_fn(self, inst)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4386, in CALL
    self._call(inst)
    ~~~~~~~~~~^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4377, in _call
    self.call_function(fn, args, kwargs)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1433, in call_function
    self.push(fn.call_function(self, args, kwargs))  # type: ignore[arg-type]
              ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward
    return getattr(self.realize(), name)(*args, **kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 854, in call_function
    return super().call_function(tx, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 500, in call_function
    return tx.inline_user_function_return(self, [*self.self_args(), *args], kwargs)  # type: ignore[attr-defined]
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1460, in inline_user_function_return
    return InliningInstructionTranslator.inline_call(self, fn, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5547, in inline_call
    return tracer.inline_call_()
           ~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5776, in inline_call_
    self.run()
    ~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1883, in run
    while self.step():
          ~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1536, in step
    self.dispatch_table[inst.opcode](self, inst)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper
    return inner_fn(self, inst)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4386, in CALL
    self._call(inst)
    ~~~~~~~~~~^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4377, in _call
    self.call_function(fn, args, kwargs)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1433, in call_function
    self.push(fn.call_function(self, args, kwargs))  # type: ignore[arg-type]
              ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 500, in call_function
    return tx.inline_user_function_return(self, [*self.self_args(), *args], kwargs)  # type: ignore[attr-defined]
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1460, in inline_user_function_return
    return InliningInstructionTranslator.inline_call(self, fn, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5547, in inline_call
    return tracer.inline_call_()
           ~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5776, in inline_call_
    self.run()
    ~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1883, in run
    while self.step():
          ~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1536, in step
    self.dispatch_table[inst.opcode](self, inst)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper
    return inner_fn(self, inst)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4386, in CALL
    self._call(inst)
    ~~~~~~~~~~^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4377, in _call
    self.call_function(fn, args, kwargs)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1433, in call_function
    self.push(fn.call_function(self, args, kwargs))  # type: ignore[arg-type]
              ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward
    return getattr(self.realize(), name)(*args, **kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 854, in call_function
    return super().call_function(tx, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 500, in call_function
    return tx.inline_user_function_return(self, [*self.self_args(), *args], kwargs)  # type: ignore[attr-defined]
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1460, in inline_user_function_return
    return InliningInstructionTranslator.inline_call(self, fn, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5547, in inline_call
    return tracer.inline_call_()
           ~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5776, in inline_call_
    self.run()
    ~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1883, in run
    while self.step():
          ~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1536, in step
    self.dispatch_table[inst.opcode](self, inst)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper
    return inner_fn(self, inst)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4386, in CALL
    self._call(inst)
    ~~~~~~~~~~^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4377, in _call
    self.call_function(fn, args, kwargs)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1433, in call_function
    self.push(fn.call_function(self, args, kwargs))  # type: ignore[arg-type]
              ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward
    return getattr(self.realize(), name)(*args, **kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/user_defined.py", line 1014, in call_function
    constant_args = check_constant_args(args, kwargs)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/utils.py", line 2897, in check_constant_args
    return all(x.is_python_constant() for x in itertools.chain(args, kwargs.values()))
           ^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/utils.py", line 2897, in <genexpr>
    return all(x.is_python_constant() for x in itertools.chain(args, kwargs.values()))
               ~~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward
    return getattr(self.realize(), name)(*args, **kwargs)
                   ~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 115, in realize
    self._cache.realize()
    ~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 49, in realize
    self.vt = builder.VariableBuilder(
              ~~~~~~~~~~~~~~~~~~~~~~~~
        tx, self.source, allow_lazy_constant=False
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    )(self.value)
    ~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 534, in __call__
    return self._call_impl(value)
           ~~~~~~~~~~~~~~~^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 571, in _call_impl
    vt = self._wrap(value)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 928, in _wrap
    result = dict(
        build_key_value(i, k, v)
        for i, k, v in enumerate_items_with_dict_position(value)
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 930, in <genexpr>
    for i, k, v in enumerate_items_with_dict_position(value)
                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/utils.py", line 3013, in <genexpr>
    return ((i, k, v) for i, (k, v) in enumerate(items))
                                       ~~~~~~~~~^^^^^^^
torch._dynamo.exc.InternalTorchDynamoError: RuntimeError: dictionary changed size during iteration

Code Example

Traceback (most recent call last):
  File "/__w/pytorch/pytorch/test/test_pytree.py", line 1386, in test_tree_map_with_path_multiple_trees
    class ACustomPytree:
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2619, in __call__
    result = self._torchdynamo_orig_backend(
        frame, cache_entry, self.hooks, frame_state, skip=1
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2310, in __call__
    result = self._inner_convert(
        frame, cache_entry, hooks, frame_state, skip=skip + 1
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 777, in __call__
    result = _compile(
        frame.f_code,
    ...<18 lines>...
        convert_frame_box=self._box,
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2159, in _compile
    raise InternalTorchDynamoError(
        f"{type(e).__qualname__}: {str(e)}"
    ).with_traceback(e.__traceback__) from None
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2094, in _compile
    guarded_code, tracer_output = compile_inner(code, one_graph, hooks)
                                  ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_utils_internal.py", line 96, in wrapper_function
    return function(*args, **kwargs)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1679, in compile_inner
    result = _compile_inner(code, one_graph, hooks)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1739, in _compile_inner
    dynamo_output = compile_frame(
        code,
    ...<11 lines>...
        package=package,
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1584, in compile_frame
    bytecode, tracer_output = transform_code_object(code, transform)
                              ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/bytecode_transformation.py", line 1766, in transform_code_object
    tracer_output = transformations(instructions, code_options)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1555, in transform
    tracer_output = trace_frame(
        code,
    ...<14 lines>...
        package=package,
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 368, in _fn
    return fn(*args, **kwargs)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 954, in trace_frame
    run_tracer()
    ~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 935, in run_tracer
    tracer.run()
    ~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1883, in run
    while self.step():
          ~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1536, in step
    self.dispatch_table[inst.opcode](self, inst)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper
    return inner_fn(self, inst)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4386, in CALL
    self._call(inst)
    ~~~~~~~~~~^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4377, in _call
    self.call_function(fn, args, kwargs)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1433, in call_function
    self.push(fn.call_function(self, args, kwargs))  # type: ignore[arg-type]
              ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward
    return getattr(self.realize(), name)(*args, **kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 854, in call_function
    return super().call_function(tx, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 500, in call_function
    return tx.inline_user_function_return(self, [*self.self_args(), *args], kwargs)  # type: ignore[attr-defined]
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1460, in inline_user_function_return
    return InliningInstructionTranslator.inline_call(self, fn, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5547, in inline_call
    return tracer.inline_call_()
           ~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5776, in inline_call_
    self.run()
    ~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1883, in run
    while self.step():
          ~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1536, in step
    self.dispatch_table[inst.opcode](self, inst)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper
    return inner_fn(self, inst)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4386, in CALL
    self._call(inst)
    ~~~~~~~~~~^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4377, in _call
    self.call_function(fn, args, kwargs)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1433, in call_function
    self.push(fn.call_function(self, args, kwargs))  # type: ignore[arg-type]
              ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 500, in call_function
    return tx.inline_user_function_return(self, [*self.self_args(), *args], kwargs)  # type: ignore[attr-defined]
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1460, in inline_user_function_return
    return InliningInstructionTranslator.inline_call(self, fn, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5547, in inline_call
    return tracer.inline_call_()
           ~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5776, in inline_call_
    self.run()
    ~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1883, in run
    while self.step():
          ~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1536, in step
    self.dispatch_table[inst.opcode](self, inst)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper
    return inner_fn(self, inst)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4386, in CALL
    self._call(inst)
    ~~~~~~~~~~^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4377, in _call
    self.call_function(fn, args, kwargs)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1433, in call_function
    self.push(fn.call_function(self, args, kwargs))  # type: ignore[arg-type]
              ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward
    return getattr(self.realize(), name)(*args, **kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 854, in call_function
    return super().call_function(tx, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 500, in call_function
    return tx.inline_user_function_return(self, [*self.self_args(), *args], kwargs)  # type: ignore[attr-defined]
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1460, in inline_user_function_return
    return InliningInstructionTranslator.inline_call(self, fn, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5547, in inline_call
    return tracer.inline_call_()
           ~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5776, in inline_call_
    self.run()
    ~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1883, in run
    while self.step():
          ~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1536, in step
    self.dispatch_table[inst.opcode](self, inst)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper
    return inner_fn(self, inst)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4386, in CALL
    self._call(inst)
    ~~~~~~~~~~^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4377, in _call
    self.call_function(fn, args, kwargs)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1433, in call_function
    self.push(fn.call_function(self, args, kwargs))  # type: ignore[arg-type]
              ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward
    return getattr(self.realize(), name)(*args, **kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/user_defined.py", line 1014, in call_function
    constant_args = check_constant_args(args, kwargs)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/utils.py", line 2897, in check_constant_args
    return all(x.is_python_constant() for x in itertools.chain(args, kwargs.values()))
           ^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/utils.py", line 2897, in <genexpr>
    return all(x.is_python_constant() for x in itertools.chain(args, kwargs.values()))
               ~~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward
    return getattr(self.realize(), name)(*args, **kwargs)
                   ~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 115, in realize
    self._cache.realize()
    ~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 49, in realize
    self.vt = builder.VariableBuilder(
              ~~~~~~~~~~~~~~~~~~~~~~~~
        tx, self.source, allow_lazy_constant=False
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    )(self.value)
    ~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 534, in __call__
    return self._call_impl(value)
           ~~~~~~~~~~~~~~~^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 571, in _call_impl
    vt = self._wrap(value)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 928, in _wrap
    result = dict(
        build_key_value(i, k, v)
        for i, k, v in enumerate_items_with_dict_position(value)
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 930, in <genexpr>
    for i, k, v in enumerate_items_with_dict_position(value)
                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/utils.py", line 3013, in <genexpr>
    return ((i, k, v) for i, (k, v) in enumerate(items))
                                       ~~~~~~~~~^^^^^^^
torch._dynamo.exc.InternalTorchDynamoError: RuntimeError: dictionary changed size during iteration

from user code:
   File "/__w/pytorch/pytorch/test/test_pytree.py", line 1385, in torch_dynamo_resume_in_test_tree_map_with_path_multiple_trees_at_1386
    @dataclass
     ^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/dataclasses.py", line 1442, in dataclass
    return wrap(cls)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/dataclasses.py", line 1432, in wrap
    return _process_class(cls, init, repr, eq, order, unsafe_hash,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/dataclasses.py", line 1130, in _process_class
    func_builder = _FuncBuilder(globals)

Set TORCHDYNAMO_VERBOSE=1 for the internal stack trace (please do this especially if you're reporting a bug to PyTorch). For even more developer context, set TORCH_LOGS="+dynamo"


To execute this test, run the following from the base repo dir:
    PYTORCH_TEST_WITH_DYNAMO=1 python test/test_pytree.py TestPythonPytree.test_tree_map_with_path_multiple_trees

This message can be suppressed by setting PYTORCH_PRINT_REPRO_ON_FAILURE=0

RAW_BUFFERClick to expand / collapse

Platforms: dynamo

This test was disabled because it is failing in CI. See recent examples and the most recent trunk workflow logs.

Over the past 6 hours, it has been determined flaky in 3 workflow(s) with 3 failures and 3 successes.

Debugging instructions (after clicking on the recent samples link): DO NOT ASSUME THINGS ARE OKAY IF THE CI IS GREEN. We now shield flaky tests from developers so CI will thus be green but it will be harder to parse the logs. To find relevant log snippets:

Click on the workflow logs linked above
Click on the Test step of the job so that it is expanded. Otherwise, the grepping will not work.
Grep for test_tree_map_with_path_multiple_trees
There should be several instances run (as flaky tests are rerun in CI) from which you can study the logs.

<details><summary>Sample error message</summary>

Traceback (most recent call last):
  File "/__w/pytorch/pytorch/test/test_pytree.py", line 1386, in test_tree_map_with_path_multiple_trees
    class ACustomPytree:
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2619, in __call__
    result = self._torchdynamo_orig_backend(
        frame, cache_entry, self.hooks, frame_state, skip=1
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2310, in __call__
    result = self._inner_convert(
        frame, cache_entry, hooks, frame_state, skip=skip + 1
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 777, in __call__
    result = _compile(
        frame.f_code,
    ...<18 lines>...
        convert_frame_box=self._box,
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2159, in _compile
    raise InternalTorchDynamoError(
        f"{type(e).__qualname__}: {str(e)}"
    ).with_traceback(e.__traceback__) from None
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2094, in _compile
    guarded_code, tracer_output = compile_inner(code, one_graph, hooks)
                                  ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_utils_internal.py", line 96, in wrapper_function
    return function(*args, **kwargs)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1679, in compile_inner
    result = _compile_inner(code, one_graph, hooks)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1739, in _compile_inner
    dynamo_output = compile_frame(
        code,
    ...<11 lines>...
        package=package,
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1584, in compile_frame
    bytecode, tracer_output = transform_code_object(code, transform)
                              ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/bytecode_transformation.py", line 1766, in transform_code_object
    tracer_output = transformations(instructions, code_options)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1555, in transform
    tracer_output = trace_frame(
        code,
    ...<14 lines>...
        package=package,
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 368, in _fn
    return fn(*args, **kwargs)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 954, in trace_frame
    run_tracer()
    ~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 935, in run_tracer
    tracer.run()
    ~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1883, in run
    while self.step():
          ~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1536, in step
    self.dispatch_table[inst.opcode](self, inst)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper
    return inner_fn(self, inst)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4386, in CALL
    self._call(inst)
    ~~~~~~~~~~^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4377, in _call
    self.call_function(fn, args, kwargs)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1433, in call_function
    self.push(fn.call_function(self, args, kwargs))  # type: ignore[arg-type]
              ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward
    return getattr(self.realize(), name)(*args, **kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 854, in call_function
    return super().call_function(tx, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 500, in call_function
    return tx.inline_user_function_return(self, [*self.self_args(), *args], kwargs)  # type: ignore[attr-defined]
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1460, in inline_user_function_return
    return InliningInstructionTranslator.inline_call(self, fn, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5547, in inline_call
    return tracer.inline_call_()
           ~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5776, in inline_call_
    self.run()
    ~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1883, in run
    while self.step():
          ~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1536, in step
    self.dispatch_table[inst.opcode](self, inst)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper
    return inner_fn(self, inst)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4386, in CALL
    self._call(inst)
    ~~~~~~~~~~^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4377, in _call
    self.call_function(fn, args, kwargs)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1433, in call_function
    self.push(fn.call_function(self, args, kwargs))  # type: ignore[arg-type]
              ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 500, in call_function
    return tx.inline_user_function_return(self, [*self.self_args(), *args], kwargs)  # type: ignore[attr-defined]
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1460, in inline_user_function_return
    return InliningInstructionTranslator.inline_call(self, fn, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5547, in inline_call
    return tracer.inline_call_()
           ~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5776, in inline_call_
    self.run()
    ~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1883, in run
    while self.step():
          ~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1536, in step
    self.dispatch_table[inst.opcode](self, inst)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper
    return inner_fn(self, inst)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4386, in CALL
    self._call(inst)
    ~~~~~~~~~~^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4377, in _call
    self.call_function(fn, args, kwargs)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1433, in call_function
    self.push(fn.call_function(self, args, kwargs))  # type: ignore[arg-type]
              ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward
    return getattr(self.realize(), name)(*args, **kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 854, in call_function
    return super().call_function(tx, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 500, in call_function
    return tx.inline_user_function_return(self, [*self.self_args(), *args], kwargs)  # type: ignore[attr-defined]
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1460, in inline_user_function_return
    return InliningInstructionTranslator.inline_call(self, fn, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5547, in inline_call
    return tracer.inline_call_()
           ~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5776, in inline_call_
    self.run()
    ~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1883, in run
    while self.step():
          ~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1536, in step
    self.dispatch_table[inst.opcode](self, inst)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper
    return inner_fn(self, inst)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4386, in CALL
    self._call(inst)
    ~~~~~~~~~~^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4377, in _call
    self.call_function(fn, args, kwargs)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1433, in call_function
    self.push(fn.call_function(self, args, kwargs))  # type: ignore[arg-type]
              ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward
    return getattr(self.realize(), name)(*args, **kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/user_defined.py", line 1014, in call_function
    constant_args = check_constant_args(args, kwargs)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/utils.py", line 2897, in check_constant_args
    return all(x.is_python_constant() for x in itertools.chain(args, kwargs.values()))
           ^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/utils.py", line 2897, in <genexpr>
    return all(x.is_python_constant() for x in itertools.chain(args, kwargs.values()))
               ~~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward
    return getattr(self.realize(), name)(*args, **kwargs)
                   ~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 115, in realize
    self._cache.realize()
    ~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 49, in realize
    self.vt = builder.VariableBuilder(
              ~~~~~~~~~~~~~~~~~~~~~~~~
        tx, self.source, allow_lazy_constant=False
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    )(self.value)
    ~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 534, in __call__
    return self._call_impl(value)
           ~~~~~~~~~~~~~~~^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 571, in _call_impl
    vt = self._wrap(value)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 928, in _wrap
    result = dict(
        build_key_value(i, k, v)
        for i, k, v in enumerate_items_with_dict_position(value)
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 930, in <genexpr>
    for i, k, v in enumerate_items_with_dict_position(value)
                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/utils.py", line 3013, in <genexpr>
    return ((i, k, v) for i, (k, v) in enumerate(items))
                                       ~~~~~~~~~^^^^^^^
torch._dynamo.exc.InternalTorchDynamoError: RuntimeError: dictionary changed size during iteration

from user code:
   File "/__w/pytorch/pytorch/test/test_pytree.py", line 1385, in torch_dynamo_resume_in_test_tree_map_with_path_multiple_trees_at_1386
    @dataclass
     ^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/dataclasses.py", line 1442, in dataclass
    return wrap(cls)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/dataclasses.py", line 1432, in wrap
    return _process_class(cls, init, repr, eq, order, unsafe_hash,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/dataclasses.py", line 1130, in _process_class
    func_builder = _FuncBuilder(globals)

Set TORCHDYNAMO_VERBOSE=1 for the internal stack trace (please do this especially if you're reporting a bug to PyTorch). For even more developer context, set TORCH_LOGS="+dynamo"


To execute this test, run the following from the base repo dir:
    PYTORCH_TEST_WITH_DYNAMO=1 python test/test_pytree.py TestPythonPytree.test_tree_map_with_path_multiple_trees

This message can be suppressed by setting PYTORCH_PRINT_REPRO_ON_FAILURE=0

</details>

Test file path: test_pytree.py

For all disabled tests (by GitHub issue), see https://hud.pytorch.org/disabled.

cc @zou3519 @XuehaiPan @chauhang @penguinwu

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