Read the Docs build information
Build id: 225
Project: wiki
Version: latest
Commit: c7c999a42cc52d781b913fabb2cd687bd9134c1f
Date: 2020-01-25T15:44:58.608701Z
State: finished
Success: False


[rtd-command-info] start-time: 2020-01-25T15:44:59.471086Z, end-time: 2020-01-25T15:45:02.975038Z, duration: 3, exit-code: 0
git clone --no-single-branch --depth 50 https://github.com/amarula/wiki-amarula.git .
Cloning into '.'...

[rtd-command-info] start-time: 2020-01-25T15:45:03.581376Z, end-time: 2020-01-25T15:45:03.961911Z, duration: 0, exit-code: 0
git checkout --force origin/master
Note: checking out 'origin/master'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

  git checkout -b <new-branch-name>

HEAD is now at c7c999a roc-rk3399-pc: Use u-boot-amarula/rockchip branch

[rtd-command-info] start-time: 2020-01-25T15:45:04.075777Z, end-time: 2020-01-25T15:45:04.090345Z, duration: 0, exit-code: 0
git clean -d -f -f


[rtd-command-info] start-time: 2020-01-25T15:45:04.799693Z, end-time: 2020-01-25T15:45:09.116421Z, duration: 4, exit-code: 0
python3.7 -mvirtualenv --no-site-packages --no-download /opt/readthedocs.org/user_builds/wiki/envs/latest
Using base prefix '/usr'
New python executable in /opt/readthedocs.org/user_builds/wiki/envs/latest/bin/python3.7
Also creating executable in /opt/readthedocs.org/user_builds/wiki/envs/latest/bin/python
Installing setuptools, pip, wheel...
done.

[rtd-command-info] start-time: 2020-01-25T15:45:09.244231Z, end-time: 2020-01-25T15:45:09.736359Z, duration: 0, exit-code: 2
/opt/readthedocs.org/user_builds/wiki/envs/latest/bin/python -m pip install --upgrade "<20" --cache-dir /opt/readthedocs.org/user_builds/wiki/.cache/pip pip
Usage:   
  /opt/readthedocs.org/user_builds/wiki/envs/latest/bin/python -m pip install [options] <requirement specifier> [package-index-options] ...
  /opt/readthedocs.org/user_builds/wiki/envs/latest/bin/python -m pip install [options] -r <requirements file> [package-index-options] ...
  /opt/readthedocs.org/user_builds/wiki/envs/latest/bin/python -m pip install [options] [-e] <vcs project url> ...
  /opt/readthedocs.org/user_builds/wiki/envs/latest/bin/python -m pip install [options] [-e] <local project path> ...
  /opt/readthedocs.org/user_builds/wiki/envs/latest/bin/python -m pip install [options] <archive url/path> ...

no such option: --upgrade "<20"