By the way, after this I'm getting the following warnings:
/Users/berkerpeksag/projects/cpython/Doc/whatsnew/index.rst:11: WARNING: toctree contains reference to nonexisting document 'whatsnew/2.7'
/Users/berkerpeksag/projects/cpython/Doc/whatsnew/index.rst:11: WARNING: toctree contains reference to nonexisting document 'whatsnew/2.6'
/Users/berkerpeksag/projects/cpython/Doc/whatsnew/index.rst:11: WARNING: toctree contains reference to nonexisting document 'whatsnew/2.5'
/Users/berkerpeksag/projects/cpython/Doc/whatsnew/index.rst:11: WARNING: toctree contains reference to nonexisting document 'whatsnew/2.4'
/Users/berkerpeksag/projects/cpython/Doc/whatsnew/index.rst:11: WARNING: toctree contains reference to nonexisting document 'whatsnew/2.3'
/Users/berkerpeksag/projects/cpython/Doc/whatsnew/index.rst:11: WARNING: toctree contains reference to nonexisting document 'whatsnew/2.2'
/Users/berkerpeksag/projects/cpython/Doc/whatsnew/index.rst:11: WARNING: toctree contains reference to nonexisting document 'whatsnew/2.1'
/Users/berkerpeksag/projects/cpython/Doc/whatsnew/index.rst:11: WARNING: toctree contains reference to nonexisting document 'whatsnew/2.0'