message: chore(ci): ensure even better compatibility of linux gnu binaries
  Followup of
  Let's downgrade base image for CI builds to Debian 8, for even better compatibility
diff: @@ -273,7 +273,7 @@ DOCKER_TARGET="dev"
  RUST_TARGET=""
  if [ -n "${CROSS:-}" ]; then
  if [[ "${CROSS}" == *-gnu ]]; then
  - DOCKER_BASE_IMAGE="debian:9.13"
  + DOCKER_BASE_IMAGE="debian:8.11"
  fi
  DOCKER_TARGET="cross-${CROSS}"
  