Nightly build is failing

[github-actions]

The Nightly workflow is failing.
The documentation build failed.
Log:

python override_check.py
Override check successful.
Running Sphinx v4.4.0
making output directory... done
[autosummary] generating autosummary for: api/index.rst, api/references.rst, devel/CONTRIBUTING.md, devel/index.rst, devel/infrastructureguide.rst, devel/roadmap.rst, index.rst, userguide/SUPPORT.md, userguide/apichange.rst, userguide/citing.rst, userguide/gempak.rst, userguide/index.rst, userguide/installguide.rst, userguide/media.rst, userguide/startingguide.rst, userguide/upgradeguide.rst
[autosummary] generating autosummary for: /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.calc.rst, /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.constants.rst, /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.interpolate.rst, /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.io.rst, /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.plots.ctables.rst, /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.plots.rst, /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.units.rst, /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.xarray.rst
[autosummary] generating autosummary for: /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.calc.absolute_momentum.rst, /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.calc.absolute_vorticity.rst, /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.calc.add_height_to_pressure.rst, /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.calc.add_pressure_to_height.rst, /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.calc.advection.rst, /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.calc.ageostrophic_wind.rst, /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.calc.altimeter_to_sea_level_pressure.rst, /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.calc.altimeter_to_station_pressure.rst, /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.calc.angle_to_direction.rst, /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.calc.apparent_temperature.rst, ..., /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.units.DimensionalityError.rst, /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.units.Parameter.rst, /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.units.UndefinedUnitError.rst, /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.units.check_units.rst, /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.units.concatenate.rst, /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.units.masked_array.rst, /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.units.pandas_dataframe_to_unit_arrays.rst, /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.units.process_units.rst, /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.units.signature.rst, /home/runner/work/MetPy/MetPy/docs/api/generated/metpy.xarray.grid_deltas_from_dataarray.rst
loading intersphinx inventory from https://pint.readthedocs.io/en/stable/objects.inv...
loading intersphinx inventory from https://matplotlib.org/stable/objects.inv...
loading intersphinx inventory from https://docs.python.org/3/objects.inv...
loading intersphinx inventory from https://numpy.org/doc/stable/objects.inv...
loading intersphinx inventory from https://docs.scipy.org/doc/scipy/reference/objects.inv...
loading intersphinx inventory from https://xarray.pydata.org/en/stable/objects.inv...
generating gallery...
Using Sphinx-Gallery to convert rst text blocks to markdown for .ipynb files.
generating gallery for examples... [ 14%] XArray_Projections.py
generating gallery for examples... [ 28%] sigma_to_pressure_interpolation.py
generating gallery for examples... [ 42%] Advanced_Sounding.py
Warning, treated as error:

/home/runner/work/MetPy/MetPy/examples/Advanced_Sounding.py failed to execute correctly: Traceback (most recent call last):

File "/home/runner/work/MetPy/MetPy/examples/Advanced_Sounding.py", line 30, in 

df = pd.read_fwf(get_test_data('may4_sounding.txt', as_file_obj=False),

File "/opt/hostedtoolcache/Python/3.9.9/x64/lib/python3.9/site-packages/pandas/util/_decorators.py", line 311, in wrapper

return func(*args, **kwargs)

File "/opt/hostedtoolcache/Python/3.9.9/x64/lib/python3.9/site-packages/pandas/io/parsers/readers.py", line 854, in read_fwf

raise ValueError("Length of colspecs must match length of names")

ValueError: Length of colspecs must match length of names
make: *** [Makefile:33: html] Error 2

Linkchecker output:

[dopplershift]

Broken by pydata/xarray#6121.

[dopplershift]

Xarray failure was fixed, but now is failing due to Pandas.

[dopplershift]

Opened pandas-dev/pandas#45337.

[dopplershift]

Fixed by pandas-dev/pandas#45522 and should appear in the final release/next RC.

[dopplershift]

Pandas 1.4 was released and this is passing again.