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Failures in test_cupy_percentile #81

@TomAugspurger

Description

@TomAugspurger

In https://github.com/rapidsai/dask-upstream-testing/actions/runs/18367510353/job/52323136641

packages/dask/dask/array/tests/test_cupy_percentile.py::test_percentile FAILED [ 62%]
packages/dask/dask/array/tests/test_cupy_percentile.py::test_percentile_tokenize FAILED [ 63%]
packages/dask/dask/array/tests/test_cupy_percentile.py::test_percentiles_with_empty_arrays FAILED [ 63%]
packages/dask/dask/array/tests/test_cupy_percentile.py::test_percentiles_with_empty_q FAILED [ 63%]
packages/dask/dask/array/tests/test_cupy_percentile.py::test_percentiles_with_scaler_percentile[5] FAILED [ 63%]
packages/dask/dask/array/tests/test_cupy_percentile.py::test_percentiles_with_scaler_percentile[5.0_0] FAILED [ 63%]
packages/dask/dask/array/tests/test_cupy_percentile.py::test_percentiles_with_scaler_percentile[q2] FAILED [ 63%]
packages/dask/dask/array/tests/test_cupy_percentile.py::test_percentiles_with_scaler_percentile[5.0_1] FAILED [ 63%]
packages/dask/dask/array/tests/test_cupy_percentile.py::test_percentiles_with_unknown_chunk_sizes FAILED [ 63%]

With tracebacks like:

_______________________________ test_percentile ________________________________

    def test_percentile():
        d = da.from_array(cupy.ones((16,)), chunks=(4,))
        qs = np.array([0, 50, 100])
    
>       result = da.percentile(d, qs, method="midpoint")
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

packages/dask/dask/array/tests/test_cupy_percentile.py:18: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
packages/dask/dask/array/percentile.py:179: in percentile
    calc_q = np.concatenate(([0], q, [100]))
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
cupy/_core/core.pyx:1819: in cupy._core.core._ndarray_base.__array_function__
    ???
.venv/lib/python3.12/site-packages/cupy/_manipulation/join.py:60: in concatenate
    return _core.concatenate_method(tup, axis, out, dtype, casting)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
cupy/_core/_routines_manipulation.pyx:586: in cupy._core._routines_manipulation.concatenate_method
    ???
cupy/_core/_routines_manipulation.pyx:597: in cupy._core._routines_manipulation.concatenate_method
    ???
cupy/_core/_kernel.pyx:159: in cupy._core._kernel._preprocess_args
    ???
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

>   ???
E   TypeError: Unsupported type <class 'list'>

cupy/_core/_kernel.pyx:145: TypeError

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