Sphinx: building docs throws error

[laborleben]

Message:

�[0K$ sphinx-versioning push -r development -w master -w development -b docs gh-pages .
�[36m=> Reading config from docs/conf.py...�[39m
Running Sphinx v1.6.3
loading pickled environment... not yet created
loading intersphinx inventory from https://docs.python.org/objects.inv...
intersphinx inventory has moved: https://docs.python.org/objects.inv -> https://docs.python.org/2/objects.inv

Exception occurred:
  File "/home/travis/miniconda/lib/python2.7/site-packages/sphinxcontrib/versioning/sphinx_.py", line 60, in builder_inited
    app.config.html_sidebars['**'] = StandaloneHTMLBuilder.default_sidebars + ['versions.html']
AttributeError: type object 'StandaloneHTMLBuilder' has no attribute 'default_sidebars'
The full traceback has been saved in /tmp/sphinx-err-eVymCp.log, if you want to report the issue to the developers.
Please also report this if it was a user error, so that a better error message can be provided next time.
A bug report can be filed in the tracker at <https://github.com/sphinx-doc/sphinx/issues>. Thanks!
Process ProcessWithCoverage-1:
Traceback (most recent call last):
  File "/home/travis/miniconda/lib/python2.7/multiprocessing/process.py", line 258, in _bootstrap
    self.run()
  File "/home/travis/miniconda/lib/python2.7/multiprocessing/process.py", line 114, in run
    self._target(*self._args, **self._kwargs)
  File "/home/travis/miniconda/lib/python2.7/site-packages/sphinxcontrib/versioning/sphinx_.py", line 219, in _read_config
    _build(argv, config, Versions(list()), current_name, False)
  File "/home/travis/miniconda/lib/python2.7/site-packages/sphinxcontrib/versioning/sphinx_.py", line 204, in _build
    raise SphinxError
SphinxError
�[31m=> sphinx-build failed for branch/tag while reading config: <local>�[39m
�[33m=> Unable to read file, continuing with only CLI args.�[39m
�[36m=> Cloning gh-pages into temporary directory...�[39m
�[36m=> Building docs...�[39m
�[36m=> Gathering info about the remote git repository...�[39m
�[36m=> Getting list of all remote branches/tags...�[39m
�[36m=> Found: Hiterrors dbm development experimental gh-pages gui improvements master 0.0.1�[39m
�[36m=> Need to fetch from remote...�[39m
�[36m=> With docs: Hiterrors development gui improvements master 0.0.1�[39m
�[36m=> Passed whitelisting: development master 0.0.1�[39m
�[36m=> Root ref is: development�[39m
�[36m=> Banner main ref is: master�[39m
�[36m=> Pre-running Sphinx to collect versions' master_doc and other info.�[39m
Running Sphinx v1.6.3
loading pickled environment... not yet created
loading intersphinx inventory from https://docs.python.org/objects.inv...
intersphinx inventory has moved: https://docs.python.org/objects.inv -> https://docs.python.org/2/objects.inv

Exception occurred:
  File "/home/travis/miniconda/lib/python2.7/site-packages/sphinxcontrib/versioning/sphinx_.py", line 60, in builder_inited
    app.config.html_sidebars['**'] = StandaloneHTMLBuilder.default_sidebars + ['versions.html']
AttributeError: type object 'StandaloneHTMLBuilder' has no attribute 'default_sidebars'
The full traceback has been saved in /tmp/sphinx-err-_gzLP0.log, if you want to report the issue to the developers.
Please also report this if it was a user error, so that a better error message can be provided next time.
A bug report can be filed in the tracker at <https://github.com/sphinx-doc/sphinx/issues>. Thanks!
Process ProcessWithCoverage-2:
Traceback (most recent call last):
  File "/home/travis/miniconda/lib/python2.7/multiprocessing/process.py", line 258, in _bootstrap
    self.run()
  File "/home/travis/miniconda/lib/python2.7/multiprocessing/process.py", line 114, in run
    self._target(*self._args, **self._kwargs)
  File "/home/travis/miniconda/lib/python2.7/site-packages/sphinxcontrib/versioning/sphinx_.py", line 204, in _build
    raise SphinxError
SphinxError
�[31m=> sphinx-build failed for branch/tag: development�[39m
Failure.

travis_time:end:02b2fefa:start=1500045983752368883,finish=1500046009786876393,duration=26034507510
�[0Ktravis_fold:end:after_success.8
�[0K
Done. Your build exited with 0.


No output has been received in the last 10m0s, this potentially indicates a stalled build or something wrong with the build itself.
Check the details on how to adjust your build configuration on: https://docs.travis-ci.com/user/common-build-problems/#Build-times-out-because-no-output-was-received

The build has been terminated

[DavidLP]

@themperek did this.

[laborleben]

Related: sphinx-contrib/sphinxcontrib-versioning#39

[themperek]

Fixed: 9d41f70