handle_401_warn for when invalid credentials are given
handle_401_warn for when invalid credentials are given

pypa/pip,xavfernandez/pip,sbidoul/pip,pradyunsg/pip,rouge8/pip,rouge8/pip,xavfernandez/pip,pfmoore/pip,xavfernandez/pip,sbidoul/pip,pypa/pip,pradyunsg/pip,rouge8/pip,pfmoore/pip