I also attach one of the files which are supposed to be useful to debug this: /tmp/sphinx-err-pW9FlZ.log from one of the builds.
Thanks.
# Sphinx version: 1.4.6 # Python version: 2.7.12+ (CPython) # Docutils version: 0.12 release # Jinja2 version: 2.8 # Last messages: # /build/mako-1.0.4+ds1/doc/build/usage.rst:175: WARNING: py:class reference target not found: Lexer # /build/mako-1.0.4+ds1/doc/build/usage.rst:175: WARNING: py:class reference target not found: Lexer # /build/mako-1.0.4+ds1/doc/build/usage.rst:5: WARNING: py:class reference target not found: object # /build/mako-1.0.4+ds1/doc/build/usage.rst:51: WARNING: py:class reference target not found: NotImplementedError # /build/mako-1.0.4+ds1/doc/build/usage.rst:51: WARNING: py:class reference target not found: TemplateLookupException # /build/mako-1.0.4+ds1/doc/build/usage.rst:5: WARNING: py:class reference target not found: object # generating indices... # genindex # The name of the builder is: html # The name of the builder is: html # Loaded extensions: # sphinx.ext.autodoc (1.4.6) from /usr/lib/python2.7/dist-packages/sphinx/ext/autodoc.pyc # sphinx.ext.intersphinx (1.4.6) from /usr/lib/python2.7/dist-packages/sphinx/ext/intersphinx.pyc # changelog (unknown version) from /usr/lib/python2.7/dist-packages/changelog/__init__.pyc # builder.builders (unknown version) from /build/mako-1.0.4+ds1/doc/build/builder/builders.py # alabaster (0.7.8) from /usr/lib/python2.7/dist-packages/alabaster/__init__.pyc # sphinx_paramlinks (unknown version) from /usr/lib/python2.7/dist-packages/sphinx_paramlinks/__init__.pyc Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/sphinx/cmdline.py", line 244, in main app.build(opts.force_all, filenames) File "/usr/lib/python2.7/dist-packages/sphinx/application.py", line 297, in build self.builder.build_update() File "/usr/lib/python2.7/dist-packages/sphinx/builders/__init__.py", line 251, in build_update 'out of date' % len(to_build)) File "/usr/lib/python2.7/dist-packages/sphinx/builders/__init__.py", line 325, in build self.finish() File "/usr/lib/python2.7/dist-packages/sphinx/builders/html.py", line 462, in finish self.finish_tasks.add_task(self.gen_indices) File "/usr/lib/python2.7/dist-packages/sphinx/util/parallel.py", line 40, in add_task res = task_func() File "/usr/lib/python2.7/dist-packages/sphinx/builders/html.py", line 478, in gen_indices self.write_genindex() File "/usr/lib/python2.7/dist-packages/sphinx/builders/html.py", line 538, in write_genindex self.handle_page('genindex', genindexcontext, 'genindex.html') File "/usr/lib/python2.7/dist-packages/sphinx/builders/html.py", line 803, in handle_page output = self.templates.render(templatename, ctx) File "/build/mako-1.0.4+ds1/doc/build/builder/builders.py", line 70, in render return self.lookup.get_template(template).render_unicode(**context) File "/build/mako-1.0.4+ds1/mako/template.py", line 454, in render_unicode as_unicode=True) File "/build/mako-1.0.4+ds1/mako/runtime.py", line 829, in _render **_kwargs_for_callable(callable_, data)) File "/build/mako-1.0.4+ds1/mako/runtime.py", line 864, in _render_context _exec_template(inherit, lclcontext, args=args, kwargs=kwargs) File "/build/mako-1.0.4+ds1/mako/runtime.py", line 890, in _exec_template callable_(context, *args, **kwargs) File "base_mako", line 64, in render_body File "layout_mako", line 178, in render_body File "genindex_mako", line 71, in render_body ValueError: too many values to unpack