issues: 1515185383

A deployment of #1967 to ReadTheDocs just failed like this: https://readthedocs.org/projects/datasette/builds/19045460/

``` Running Sphinx v6.0.0 making output directory... done building [mo]: targets for 0 po files that are out of date building [html]: targets for 28 source files that are out of date updating environment: [new config] 28 added, 0 changed, 0 removed reading sources... [ 3%] authentication reading sources... [ 7%] binary_data reading sources... [ 10%] changelog

Traceback (most recent call last): File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/statemachine.py", line 299, in next_line self.line = self.input_lines[self.line_offset] File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/statemachine.py", line 1136, in getitem return self.data[i] IndexError: list index out of range

During handling of the above exception, another exception occurred:

Traceback (most recent call last): File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/statemachine.py", line 226, in run self.next_line() File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/statemachine.py", line 302, in next_line raise EOFError EOFError

During handling of the above exception, another exception occurred:

Traceback (most recent call last): File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/sphinx/cmd/build.py", line 281, in build_main app.build(args.force_all, args.filenames) File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/sphinx/application.py", line 344, in build self.builder.build_update() File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/sphinx/builders/init.py", line 310, in build_update self.build(to_build, File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/sphinx/builders/init.py", line 326, in build updated_docnames = set(self.read()) File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/sphinx/builders/init.py", line 433, in read self._read_serial(docnames) File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/sphinx/builders/init.py", line 454, in _read_serial self.read_doc(docname) File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/sphinx/builders/init.py", line 510, in read_doc publisher.publish() File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/core.py", line 224, in publish self.document = self.reader.read(self.source, self.parser, File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/sphinx/io.py", line 103, in read self.parse() File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/readers/init.py", line 76, in parse self.parser.parse(self.input, document) File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/sphinx/parsers.py", line 78, in parse self.statemachine.run(inputlines, document, inliner=self.inliner) File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/parsers/rst/states.py", line 169, in run results = StateMachineWS.run(self, input_lines, input_offset, File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/statemachine.py", line 233, in run context, next_state, result = self.check_line( File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/statemachine.py", line 445, in check_line return method(match, context, next_state) File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/parsers/rst/states.py", line 3024, in text self.section(title.lstrip(), source, style, lineno + 1, messages) File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/parsers/rst/states.py", line 325, in section self.new_subsection(title, lineno, messages) File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/parsers/rst/states.py", line 391, in new_subsection newabsoffset = self.nested_parse( File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/parsers/rst/states.py", line 279, in nested_parse state_machine.run(block, input_offset, memo=self.memo, File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/parsers/rst/states.py", line 195, in run results = StateMachineWS.run(self, input_lines, input_offset) File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/statemachine.py", line 233, in run context, next_state, result = self.check_line( File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/statemachine.py", line 445, in check_line return method(match, context, next_state) File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/parsers/rst/states.py", line 2785, in underline self.section(title, source, style, lineno - 1, messages) File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/parsers/rst/states.py", line 325, in section self.new_subsection(title, lineno, messages) File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/parsers/rst/states.py", line 391, in new_subsection newabsoffset = self.nested_parse( File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/parsers/rst/states.py", line 279, in nested_parse state_machine.run(block, input_offset, memo=self.memo, File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/parsers/rst/states.py", line 195, in run results = StateMachineWS.run(self, input_lines, input_offset) File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/statemachine.py", line 233, in run context, next_state, result = self.check_line( File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/statemachine.py", line 445, in check_line return method(match, context, next_state) File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/parsers/rst/states.py", line 1273, in bullet i, blank_finish = self.list_item(match.end()) File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/parsers/rst/states.py", line 1295, in list_item self.nested_parse(indented, input_offset=line_offset, File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/parsers/rst/states.py", line 279, in nested_parse state_machine.run(block, input_offset, memo=self.memo, File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/parsers/rst/states.py", line 195, in run results = StateMachineWS.run(self, input_lines, input_offset) File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/statemachine.py", line 239, in run result = state.eof(context) File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/parsers/rst/states.py", line 2725, in eof self.blank(None, context, None) File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/parsers/rst/states.py", line 2716, in blank paragraph, literalnext = self.paragraph( File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/parsers/rst/states.py", line 416, in paragraph textnodes, messages = self.inline_text(text, lineno) File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/parsers/rst/states.py", line 425, in inline_text nodes, messages = self.inliner.parse(text, lineno, File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/parsers/rst/states.py", line 649, in parse before, inlines, remaining, sysmessages = method(self, match, File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/parsers/rst/states.py", line 792, in interpreted_or_phrase_ref nodelist, messages = self.interpreted(rawsource, escaped, role, File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/docutils/parsers/rst/states.py", line 889, in interpreted nodes, messages2 = role_fn(role, rawsource, text, lineno, self) File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/sphinx/ext/extlinks.py", line 101, in role title = caption % part TypeError: not all arguments converted during string formatting

Exception occurred: File "/home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/latest/lib/python3.9/site-packages/sphinx/ext/extlinks.py", line 101, in role title = caption % part TypeError: not all arguments converted during string formatting The full traceback has been saved in /tmp/sphinx-err-kq7ylgqo.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! ```