speed% git clone https://github.com/mongodb/docs-ruby
Cloning into 'docs-ruby'...
remote: Counting objects: 687, done.
remote: Compressing objects: 100% (13/13), done.
remote: Total 687 (delta 6), reused 8 (delta 3), pack-reused 671
Receiving objects: 100% (687/687), 231.38 KiB | 8.26 MiB/s, done.
Resolving deltas: 100% (382/382), done.
speed% cd docs-ruby 
speed% 
speed% make html
giza generate assets
INFO:giza.content.assets:cloned master branch from repo https://github.com/mongodb/bson-ruby.git
INFO:giza.content.assets:cloned master branch from repo https://github.com/mongodb/docs-tools.git
INFO:giza.content.assets:cloned master branch from repo https://github.com/mongodb/mongo-ruby-driver.git
Making target source directory -- doing this explicitly instead of via cp
if [ -d source-master ]; then rm -rf source-master ; fi;
mkdir source-master
Copying over ruby-driver docs files
cp -R build/ruby-driver-master/docs/* source-master
Copying over bson  docs files
cp -R build/bson-ruby/docs/* source-master
giza make html
INFO:giza.operations.make:running sphinx build operation, equivalent to: giza sphinx --builder html
INFO:giza.content.assets:updated /home/w/tmp/docs-ruby/build/docs-tools repository
INFO:giza.content.assets:updated /home/w/tmp/docs-ruby/build/bson-ruby repository
INFO:giza.content.assets:updated /home/w/tmp/docs-ruby/build/ruby-driver-master repository
INFO:giza.content.source:created directory for sphinx build: /home/w/tmp/docs-ruby/build/master/source-master
INFO:giza.content.source:prepared and migrated source for sphinx build in /home/w/tmp/docs-ruby/build/master/source-master
INFO:giza.operations.sphinx:adding builder job for html (None, None)
INFO:giza.content.sphinx:Starting sphinx build: sphinx-build -t website -t web -t html -q -b html -c /home/w/tmp/docs-ruby -d /home/w/tmp/docs-ruby/build/master/doctrees-html /home/w/tmp/docs-ruby/build/master/source-master /home/w/tmp/docs-ruby/build/master/html
**ERROR:giza.pool:caught error "[Errno 2] No such file or directory", waiting for other tasks to finish**
Traceback (most recent call last):
  File "/home/w/bin/giza", line 11, in <module>
    sys.exit(main())
  File "/home/w/.local/lib/python2.7/site-packages/giza/cmdline.py", line 163, in main
    argh.dispatch(parser, namespace=args)
  File "/home/w/.local/lib/python2.7/site-packages/argh/dispatching.py", line 174, in dispatch
    for line in lines:
  File "/home/w/.local/lib/python2.7/site-packages/argh/dispatching.py", line 277, in _execute_command
    for line in result:
  File "/home/w/.local/lib/python2.7/site-packages/argh/dispatching.py", line 231, in _call
    result = function(namespace_obj)
  File "/home/w/.local/lib/python2.7/site-packages/giza/operations/make.py", line 140, in main
    run_make_operations(targets, conf)
  File "/home/w/.local/lib/python2.7/site-packages/giza/operations/make.py", line 235, in run_make_operations
    sphinx_publication(conf, app)
  File "/home/w/.local/lib/python2.7/site-packages/giza/operations/sphinx_cmds.py", line 113, in sphinx_publication
    return sphinx_builder_tasks(app, conf)
  File "/home/w/.local/lib/python2.7/site-packages/giza/operations/sphinx_cmds.py", line 125, in sphinx_builder_tasks
    app.run()
  File "/home/w/.local/lib/python2.7/site-packages/giza/libgiza/app.py", line 421, in run
    self.results.extend(self.pool.runner(self.queue))
  File "/home/w/.local/lib/python2.7/site-packages/giza/libgiza/pool.py", line 79, in runner
    return self.get_results(self.async_runner(jobs))
  File "/home/w/.local/lib/python2.7/site-packages/giza/libgiza/pool.py", line 160, in get_results
    retval.append((idx, task_result))
UnboundLocalError: local variable 'task_result' referenced before assignment
make: *** [Makefile:27: html] Error 1