ppa for ubuntu 16.04

[telsch]

can't load wireguard module from ppa for ubuntu 16.04

uname -a
Linux vs1 4.4.0-142-generic #168-Ubuntu SMP Wed Jan 16 21:00:45 UTC 2019 
x86_64 x86_64 x86_64 GNU/Linux

modinfo wireguard
filename:       /lib/modules/4.4.0-142-generic/updates/dkms/wireguard.ko
alias:          net-pf-16-proto-16-family-wireguard
alias:          rtnl-link-wireguard
version:        0.0.20190227
author:         Jason A. Donenfeld <Jason at zx2c4.com>
description:    WireGuard secure network tunnel
license:        GPL v2
srcversion:     E1E93C9FFF84235A6B04701
depends:        udp_tunnel,ip6_udp_tunnel
vermagic:       4.4.0-142-generic SMP mod_unload modversions

dmesg:

wireguard: version magic '4.4.0-142-generic SMP mod_unload modversions ' 
should be '4.4.0-142-generic SMP mod_unload modversions retpoline '