Ron pip and virtualenv changed recently (within the last week) so it has wide reaching impact. In my ubuntu container which pulls in the new virtualenv and pip, it appears to be working. That env has python3.6 The only difference I see is that mine pulls in packaging==20.7 whereas yours is using 20.4 docs installed: alabaster==0.7.12,Babel==2.9.0,certifi==2020.11.8,chardet==3.0.4,docutils==0.15.2,dulwich==0.20.14,idna==2.10,imagesize==1.2.0,Jinja2==2.11.2,MarkupSafe==1.1.1,openstackdocstheme==2.2.7,os-api-ref==2.1.0,packaging==20.7,pbr==5.5.1,Pygments==2.7.2,pyparsing==2.4.7,pytz==2020.4,PyYAML==5.3.1,requests==2.25.0,six==1.15.0,snowballstemmer==2.0.0,Sphinx==3.3.1,sphinxcontrib-applehelp==1.0.2,sphinxcontrib-devhelp==1.0.2,sphinxcontrib-htmlhelp==1.0.3,sphinxcontrib-jsmath==1.0.1,sphinxcontrib-qthelp==1.0.3,sphinxcontrib-serializinghtml==1.1.4,urllib3==1.26.2 docs run-test-pre: PYTHONHASHSEED='3039678748' docs run-test: commands[0] | sphinx-build -a -E -W -d doc/build/doctrees -b html doc/source doc/build/html Running Sphinx v3.3.1 [openstackdocstheme] version: 2.2.7 [openstackdocstheme] connecting html-page-context event handler Al ________________________________ From: Stone, Ronald <Ronald.Stone@windriver.com> Sent: Wednesday, December 9, 2020 8:11 AM To: starlingx-discuss@lists.starlingx.io <starlingx-discuss@lists.starlingx.io> Subject: [Starlingx-discuss] doc-build-failures Hi, Starting yesterday several contributors to StarlingX docs can no longer successfully perform local doc builds: $ tox -e docs docs installed: alabaster==0.7.12,Babel==2.9.0,certifi==2020.11.8,chardet==3.0.4,colorama==0.4.4,docutils==0.15.2,dulwich==0.20.14,idna==2.10,imagesize==1.2.0,Jinja2==2.11.2,MarkupSafe==1.1.1,openstackdocstheme==2.2.7,os-api-ref==2.1.0,packaging==20.4,pbr==5.5.1,Pygments==2.7.2,pyparsing==2.4.7,pytz==2020.4,PyYAML==5.3.1,requests==2.25.0,six==1.15.0,snowballstemmer==2.0.0,Sphinx==3.3.1,sphinxcontrib-applehelp==1.0.2,sphinxcontrib-devhelp==1.0.2,sphinxcontrib-htmlhelp==1.0.3,sphinxcontrib-jsmath==1.0.1,sphinxcontrib-qthelp==1.0.3,sphinxcontrib-serializinghtml==1.1.4,urllib3==1.26.2 docs run-test-pre: PYTHONHASHSEED='925' docs run-test: commands[0] | sphinx-build -a -E -W -d doc/build/doctrees -b html doc/source doc/build/html ERROR: InvocationError for command could not find executable sphinx-build ___________________________________ summary ___________________________________ ERROR: docs: commands failed The executable sphinx-build.exe is missing from docs/.tox/docs/Scripts/ If manually restored, it is deleted the next time tox -e docs is run. docs/.tox/log is empty. Has there been a tox requirements change that would cause builds to start failing for multiple users simultaneously? Any insights/suggestions appreciated. Ron