http://ss3.gemstone.com/ seems to be unavailble. So some builds are failing due to
Could not resolve: STON-Core [STON-Core-SvenVanCaekenberghe.87] in /home/travis/smalltalkCI-master/_builds/pharo-local/package-cache http://ss3.gemstone.com/ss/STON ERROR: 'GoferRepositoryError: Could not access http://ss3.gemstone.com/ss/STON: ZnHttpUnsuccessful: 500 Internal Server Error'
