demowarning() {
        if [ "${__libdemo_prev_output}" != democmd ]; then
            echo
        fi
        if __libdemo_use_colour; then
            local -r prefix="\e[1;31m[!]\e[0m"
        else
            local -r prefix="[!]"
        fi
        echo -e "${prefix}" "$@"
        __libdemo_prev_output=demowarning
    }
    w() {
        demowarning "$@"
    }

    n "If /dev/kvm is not world-read-writable VMs will be emulated which is prohibitively slow!"

    w "If /dev/kvm is not world-read-writable VMs will be emulated which is prohibitively slow!"

    n "It seems aarch64-linux binfmt emulation is not available, the following part of the demo may not work"

    w "It seems aarch64-linux binfmt emulation is not available, the following part of the demo may not work"

    n "No subuid range defined for user, consider running 'sudo usermod --add-subuids 10000-75535 ${USER}' to allow rootless podman to work"

    w "No subuid range defined for user, consider running 'sudo usermod --add-subuids 10000-75535 ${USER}' to allow rootless podman to work"