DeadUrl: version 3.12: HOMEPAGE: connection failed: https://www.gnu.org/software/grep/
  DeadUrl: version 3.12: SRC_URI: connection failed: https://ftp.gnu.org/gnu/grep/grep-3.12.tar.xz
  DeadUrl: version 3.12: SRC_URI: connection failed: https://ftp.gnu.org/gnu/grep/grep-3.12.tar.xz.sig