How to create the documentation

[grueni]

I created a virtual environment with:
python2.7 virtualenv.pyz docs
docs/bin/pip install -r https://raw.githubusercontent.com/mongodb/docs-tools/master/giza/requirements.txt --trusted-host pypi.org --trusted-host files.pythonhosted.org

Then I tried the following
root@build3:/export/builds/oi-userland/components/database/mongodb-40/build/docs/docs-commandline-tools# PATH=/export/builds/oi-userland/components/database/mongodb-40/build/docs/bin/:$PATH giza --level debug make html
DEBUG:giza.config.runtime:set logging level to: debug
DEBUG:giza.libgiza.config:key "help" in configuration object (<class 'giza.config.runtime.RuntimeStateConfig'>) is not defined
DEBUG:giza.libgiza.git:created git repository management object for /export/builds/oi-userland/components/database/mongodb-40/build/docs/docs-commandline-tools
DEBUG:giza.config.helper:registering content generators with config
DEBUG:giza.libgiza.git:running git command (git rev-parse --abbrev-ref HEAD) at path /export/builds/oi-userland/components/database/mongodb-40/build/docs/docs-commandline-tools
DEBUG:giza.config.system:resolving config data from file /export/builds/oi-userland/components/database/mongodb-40/build/docs/docs-commandline-tools/config/push.yaml
INFO:giza.operations.make:running sphinx build operation, equivalent to: giza sphinx --builder html
DEBUG:giza.content.assets:adding asset resolution job for /export/builds/oi-userland/components/database/mongodb-40/build/docs/docs-commandline-tools/build/docs-tools
DEBUG:giza.libgiza.task:created task object calling <function assets_setup at 0xfceaef0c>, for setup assets for: https://github.com/mongodb/docs-tools.git in /export/builds/oi-userland/components/database/mongodb-40/build/docs/docs-commandline-tools/build/docs-tools
DEBUG:giza.pool:new process pool object
DEBUG:giza.libgiza.task:(123918688) calling <function assets_setup at 0xfceaef0c>
DEBUG:giza.libgiza.git:created git repository management object for /export/builds/oi-userland/components/database/mongodb-40/build/docs/docs-commandline-tools/build/docs-tools
DEBUG:giza.libgiza.git:running git command (git pull --ff-only origin master) at path /export/builds/oi-userland/components/database/mongodb-40/build/docs/docs-commandline-tools/build/docs-tools
INFO:giza.content.assets:updated /export/builds/oi-userland/components/database/mongodb-40/build/docs/docs-commandline-tools/build/docs-tools repository
DEBUG:giza.libgiza.task:completed running task 123918688, setup assets for: https://github.com/mongodb/docs-tools.git in /export/builds/oi-userland/components/database/mongodb-40/build/docs/docs-commandline-tools/build/docs-tools <function assets_setup at 0xfceaef0c>
DEBUG:giza.libgiza.app:pool exists, not creating a new pool
DEBUG:giza.libgiza.git:created git repository management object for /export/builds/oi-userland/components/database/mongodb-40/build/docs/docs-commandline-tools
DEBUG:giza.config.helper:registering content generators with config
DEBUG:giza.libgiza.git:running git command (git rev-parse --abbrev-ref HEAD) at path /export/builds/oi-userland/components/database/mongodb-40/build/docs/docs-commandline-tools
DEBUG:giza.config.sphinx_config:registered language, builder, and edition options: (None, html, None)
DEBUG:giza.libgiza.task:created task object calling <function transfer_source at 0xfcea53e4>, for migrating source to build/master/source
DEBUG:giza.libgiza.app:pool exists, not creating a new pool
DEBUG:giza.libgiza.task:(-832006950) calling <function transfer_source at 0xfcea53e4>
ERROR:giza.pool:caught error "[Errno 2] No such file or directory" in migrating source to build/master/source <function transfer_source at 0xfcea53e4>, waiting for other tasks to finish
ERROR:giza.pool:[OSError(2, 'No such file or directory')]
DEBUG:giza.tools.timing:time elapsed for "migrating source to build" was: 0.0539441108704

Do you have any hints how to compile the docs to get the man pages?