[issue29527] Travis: doc job is broken

[STINNER Victor]

New submission from STINNER Victor:

I suggest to disable the job until it's fixed, just to fix Travis right now. This issue will track the bug to find a solution.

https://travis-ci.org/python/cpython/jobs/200517775

$ make html SPHINXBUILD="./venv/bin/python3 -m sphinx" SPHINXOPTS="-nW -q -b linkcheck"
./venv/bin/python3 -m sphinx -b html -d build/doctrees -D latex_paper_size= -nW -q -b linkcheck . build/html 

Warning, treated as error:
WARNING: latex_preamble is deprecated. Use latex_elements['preamble'] instead.

make: *** [build] Error 1

----------
components: Tests
messages: 287573
nosy: haypo
priority: normal
severity: normal
status: open
title: Travis: doc job is broken
versions: Python 3.7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29527>
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