There are some known issues in python-msgpack 0.5.4 and 0.5.5:

 * Fix fallback.Unpacker.feed() dropped unused data from buffer
 * Fix memory leak in pure Python Unpacker.feed()
 * Fix unpack() didn't support raw option

Those are fixed in 0.5.6, so it would be nice to update the package in
SLE-15-SP1 and Leap 15.1 .

Also, because of those known problems, borgbackup 1.1.8 requires python-msgpack
0.5.6 so it currently fails to build in Leap 15.1
(https://build.opensuse.org/package/live_build_log/openSUSE:Leap:15.1:Staging:adi:7/borgbackup/standard/x86_64)

Bug ID	1123558
Summary	python-msgpack 0.5.4 has known problems
Classification	openSUSE
Product	openSUSE Distribution
Version	Leap 15.1
Hardware	Other
OS	Other
Status	NEW
Severity	Normal
Priority	P5 - None
Component	Other
Assignee	bnc-team-screening@forge.provo.novell.com
Reporter	alarrosa@suse.com
QA Contact	qa-bugs@suse.de
Found By	---
Blocker	---