DeadUrl: version 5.3.1: SRC_URI: 404 Client Error: Not Found for url: https://artfiles.org/gnu.org/gawk/gawk-5.3.1.tar.xz
  DeadUrl: version 5.3.1: SRC_URI: 404 Client Error: Not Found for url: https://artfiles.org/gnu.org/gawk/gawk-5.3.1.tar.xz.sig