name: docs run_id: commands[0] env HOME: /home/jenkins env LANG: C.UTF-8 env PATH: /w/workspace/bgpcep-tox-verify-master/.tox/docs/bin:/opt/pyenv/bin:/tmp/venv-hpVL/bin:/opt/pyenv/shims:/home/jenkins/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/opt/puppetlabs/bin env PIP_DISABLE_PIP_VERSION_CHECK: 1 env PYTHONHASHSEED: 4063568536 env PYTHONIOENCODING: utf-8 env SSH_AUTH_SOCK: ******************************** env TOX_ENV_DIR: /w/workspace/bgpcep-tox-verify-master/.tox/docs env TOX_ENV_NAME: docs env TOX_WORK_DIR: /w/workspace/bgpcep-tox-verify-master/.tox env VIRTUAL_ENV: /w/workspace/bgpcep-tox-verify-master/.tox/docs env __TOX_ENVIRONMENT_VARIABLE_ORIGINAL_CI: true metadata pid: 2652 cwd: /w/workspace/bgpcep-tox-verify-master allow: /w/workspace/bgpcep-tox-verify-master/.tox/docs/bin/* cmd: sphinx-build -W --keep-going -b html -n -d /w/workspace/bgpcep-tox-verify-master/.tox/docs/tmp/doctrees ./docs/ /w/workspace/bgpcep-tox-verify-master/docs/_build/html exit_code: 2 Running Sphinx v9.0.4 loading translations [en]... done making output directory... done Converting `source_suffix = '.rst'` to `source_suffix = {'.rst': 'restructuredtext'}`. loading intersphinx inventory 'global-jjb' from https://docs.releng.linuxfoundation.org/projects/global-jjb/en/stable/objects.inv ... loading intersphinx inventory 'lfdocs' from https://docs.releng.linuxfoundation.org/en/latest/objects.inv ... loading intersphinx inventory 'common-packer' from https://docs.releng.linuxfoundation.org/projects/common-packer/en/stable/objects.inv ... loading intersphinx inventory 'lfdocs-conf' from https://docs.releng.linuxfoundation.org/projects/lfdocs-conf/en/stable/objects.inv ... loading intersphinx inventory 'lftools' from https://docs.releng.linuxfoundation.org/projects/lftools/en/stable/objects.inv ... loading intersphinx inventory 'pipelines' from https://docs.releng.linuxfoundation.org/projects/pipelines/en/latest/objects.inv ... loading intersphinx inventory 'python' from https://docs.python.org/3/objects.inv ... building [mo]: targets for 0 po files that are out of date writing output... building [html]: targets for 58 source files that are out of date updating environment: [new config] 58 added, 0 changed, 0 removed reading sources... 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[ 10%] bgp/bgp-user-guide-additional-path-capability standard error: Versions ======== * Platform: linux; (Linux-5.15.0-164-generic-x86_64-with-glibc2.35) * Python version: 3.11.10 (CPython) * Sphinx version: 9.0.4 * Docutils version: 0.22.4 * Jinja2 version: 3.1.6 * Pygments version: 2.19.2 Last Messages ============= writing output... [ 7%] bgp-developer-guide writing output... [ 9%] bgp-monitoring-protocol-developer-guide writing output... [ 10%] bgp/bgp-user-guide-additional-path-capability Loaded Extensions ================= * sphinx.ext.mathjax (9.0.4) * alabaster (1.0.0) * sphinxcontrib.applehelp (2.0.0) * sphinxcontrib.devhelp (2.0.0) * sphinxcontrib.htmlhelp (2.1.0) * sphinxcontrib.serializinghtml (2.0.0) * sphinxcontrib.qthelp (2.0.0) * sphinx.ext.autodoc (9.0.4) * sphinx.ext.doctest (9.0.4) * sphinx.ext.intersphinx (9.0.4) * sphinx.ext.graphviz (9.0.4) * sphinx.ext.todo (9.0.4) * sphinx.ext.coverage (9.0.4) * sphinx.ext.viewcode (9.0.4) * sphinx_tabs.tabs (unknown version) Traceback ========= File "/w/workspace/bgpcep-tox-verify-master/.tox/docs/lib/python3.11/site-packages/sphinx_tabs/tabs.py", line 69, in visit attrs.pop("backrefs") KeyError: 'backrefs' The full traceback has been saved in: /tmp/sphinx-err-erins1h1.log To report this error to the developers, please open an issue at . Thanks! Please also report this if it was a user error, so that a better error message can be provided next time.