Some warning appears when installing virtualenv, does it matters?

[smith jack]

the warning is just as follows


E:\Tools>pip install virtualenv


Downloading/unpacking virtualenv
  Downloading virtualenv-1.6.4.tar.gz (1.9Mb): 1.9Mb downloaded
  Running setup.py egg_info for package virtualenv

    warning: no previously-included files matching '*.*' found under directory '
docs\_templates'
Installing collected packages: virtualenv
  Running setup.py install for virtualenv

    warning: no previously-included files matching '*.*' found under directory '
docs\_templates'
    Installing virtualenv-script.py script to E:\Tools\gov\tools\py_build\Script
s
    Installing virtualenv.exe script to E:\Tools\gov\tools\py_build\Scripts
    Installing virtualenv.exe.manifest script to E:\Tools\gov\tools\py_build\Scr
ipts
Successfully installed virtualenv
Cleaning up...