[www-scripts] Sphinx Doc Update: ERROR

[root via www-scripts]

UPDATING lnt SOURCES
HEAD is now at 6034399 [LNT] Pin Python version in Dockerfile to 3.7 temporarily
>From https://github.com/llvm/llvm-lnt
 * branch            master     -> FETCH_HEAD
Current branch master is up to date.
sphinx-build -b html -d _build/doctrees   . _build/html
Running Sphinx v1.7.6
Warning: Sphinx Bootstrap Theme package is not installed!
making output directory...
loading pickled environment... not yet created
building [mo]: targets for 0 po files that are out of date
building [html]: targets for 11 source files that are out of date
updating environment: 11 added, 0 changed, 0 removed
reading sources... [  9%] api
reading sources... [ 18%] concepts
reading sources... [ 27%] contents
reading sources... [ 36%] developer_guide
reading sources... [ 45%] importing_data
reading sources... [ 54%] intro
reading sources... [ 63%] modules/testing
reading sources... [ 72%] profiles
reading sources... [ 81%] quickstart
reading sources... [ 90%] tests
reading sources... [100%] tools

WARNING: autodoc: failed to import class u'ProfileImpl' from module u'lnt.testing.profile.profile'; the following exception was raised:
No module named future
WARNING: autodoc: failed to import module u'lnt.testing.profile.profilev1impl'; the following exception was raised:
No module named future
looking for now-outdated files... none found
pickling environment... done
checking consistency... done
preparing documents... done
writing output... [  9%] api
writing output... [ 18%] concepts
writing output... [ 27%] contents
writing output... [ 36%] developer_guide
writing output... [ 45%] importing_data
writing output... [ 54%] intro
writing output... [ 63%] modules/testing
writing output... [ 72%] profiles
writing output... [ 81%] quickstart
writing output... [ 90%] tests
writing output... [100%] tools

generating indices... genindex py-modindex
writing additional pages... index search
copying static files... done
copying extra files... done
dumping search index in English (code: en) ... done
dumping object inventory... done
build succeeded, 2 warnings.

The HTML pages are in _build/html.

Build finished. The HTML pages are in _build/html.
Copying build to /opt/sphinx-docs/web/lnt
sending incremental file list
./
.buildinfo
api.html
concepts.html
contents.html
developer_guide.html
genindex.html
importing_data.html
index.html
intro.html
objects.inv
profiles.html
py-modindex.html
quickstart.html
search.html
searchindex.js
tests.html
tools.html
_sources/
_sources/modules/
_static/
_static/basic.css
_static/classic.css
_static/doctools.js
_static/documentation_options.js
_static/pygments.css
_static/searchtools.js
_static/sidebar.js
modules/
modules/testing.html

sent 273,248 bytes  received 606 bytes  182,569.33 bytes/sec
total size is 756,273  speedup is 2.76
/opt/tools/sphinx_update.sh: warning: removing stale lock file from PID 15748.
UPDATING cfe-analyzer SOURCES
HEAD is now at 1af037f [PowerPC] Correct cpsgn's behaviour on PowerPC to match that of the ABI
>From https://github.com/llvm/llvm-project
 * branch            master     -> FETCH_HEAD
   1af037f..ca17571  master     -> origin/master
Auto packing the repository for optimum performance. You may also
run "git gc" manually. See "git help gc" for more information.
First, rewinding head to replay your work on top of it...
Fast-forwarded master to ca17571051d4e0a63e702371984dbd3671261f79.
CMake Error at CMakeLists.txt:3 (cmake_minimum_required):
  CMake 3.13.4 or higher is required.  You are running version 3.7.1


-- Configuring incomplete, errors occurred!
See also "/opt/sphinx-docs/build/llvm/CMakeFiles/CMakeOutput.log".
See also "/opt/sphinx-docs/build/llvm/CMakeFiles/CMakeError.log".
make[1]: *** [cmake_check_build_system] Error 1
make: *** [tools/clang/docs/CMakeFiles/docs-clang-html.dir/rule] Error 2