VariableOrderWrong: version 3.8.0: variable S should occur before IUSE
  DeadUrl: version 4.0.0: HOMEPAGE: 429 Client Error: Too Many Requests for url: https://xsb.sourceforge.net/: http://xsb.sourceforge.net
  DeadUrl: version 4.0.0: SRC_URI: HTTPSConnectionPool(host='downloads.sourceforge.net', port=443): Read timed out. (read timeout=5.0): https://downloads.sourceforge.net/xsb/XSB-4-0-0.tar.gz
  DeadUrl: version 4.0.0: metadata.xml: remote-id: 429 Client Error: Too Many Requests for url: https://sourceforge.net/projects/xsb/
  VariableOrderWrong: version 4.0.0: variable S should occur before IUSE