I upgraded a headless machine from ascii to beowulf and now
needrestart nagios plugin is failing.

Previously, "needrestart -p" running on ascii shows proper output:

OK - Kernel: 4.9.0-11-amd64, Services: none, Containers: none,
Sessions: none|Kernel=0;0;;0;2 Services=0;;0;0 Containers=0;;0;0
Sessions=0;0;;0

Now after upgrading to beowulf, "needrestart -p" exits with code 3 and
the following output:

UNKN - Kernel: 4.19.0-6-amd64, Microcode: unknown, Services: none,
Containers: none, Sessions: none|Kernel=0;0;;0;2 Microcode=U;0;;0;1
Services=0;;0;0 Containers=0;;0;0 Sessions=0;0;;0

Can anyone else verify this problem? I will submit a bug report to
Debian BTS if I can confirm that this problem exists elsewhere outside
of my environment.

--Tom