Wrong configuration for the issuetracker extension inside the documentation

[rexut]

Error is:

doc runtests: commands[0] | sphinx-build -W -b linkcheck -d .../sphinxcontrib-ansi/.tox/doc/tmp/doctrees doc .../sphinxcontrib-ansi/.tox/doc/tmp/linkcheck
Running Sphinx v1.6.1
making output directory...
loading pickled environment... not yet created
loading intersphinx inventory from http://sphinx.pocoo.org/objects.inv...
intersphinx inventory has moved: http://sphinx.pocoo.org/objects.inv -> http://www.sphinx-doc.org/en/stable/objects.inv
loading intersphinx inventory from http://docs.python.org/objects.inv...
intersphinx inventory has moved: http://docs.python.org/objects.inv -> https://docs.python.org/2/objects.inv
building [mo]: targets for 0 po files that are out of date
building [linkcheck]: targets for 2 source files that are out of date
updating environment: 2 added, 0 changed, 0 removed
reading sources... [ 50%] changes

Exception occurred:
  File ".../sphinxcontrib-ansi/.tox/doc/local/lib/python2.7/site-packages/sphinxcontrib/issuetracker/resolvers.py", line 68, in check_project_with_username
    tracker_config))
ValueError: username missing in project name: sphinx-contrib
The full traceback has been saved in /tmp/sphinx-err-OsX5q7.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!

[rexut]

This error occurs since the Sphinx extensionsphinxcontrib-issuetracker doesn't know anything about the configuration option issuetracker_user but expect the user name as an leading part of the option issuetracker_project separated with an single / (slash) character. For details see the section Usage on ignatenkobrain/sphinxcontrib-issuetracker