DeadUrl: version 1.2.59-r1: SRC_URI: HTTPSConnectionPool(host='downloads.sourceforge.net', port=443): Read timed out. (read timeout=5.0): https://downloads.sourceforge.net/libpng/libpng-1.2.59.tar.xz
  DeadUrl: version 1.5.30-r1: SRC_URI: HTTPSConnectionPool(host='downloads.sourceforge.net', port=443): Read timed out. (read timeout=5.0): https://downloads.sourceforge.net/libpng/libpng-1.5.30.tar.xz
  DeadUrl: version 1.5.30-r1: metadata.xml: remote-id: 429 Client Error: Too Many Requests for url: https://sourceforge.net/projects/libpng/