### Please describe the problem.
Recent builds of git-annex spew out many lines such as:
-```
-git-annex: unable to decommit memory: Invalid argument
-git-annex: unable to decommit memory: Invalid argument
-git-annex: unable to decommit memory: Invalid argument
-git-annex: unable to decommit memory: Invalid argument
-git-annex: unable to decommit memory: Invalid argument
-```
+
+ git-annex: unable to decommit memory: Invalid argument
+ git-annex: unable to decommit memory: Invalid argument
+ git-annex: unable to decommit memory: Invalid argument
+ git-annex: unable to decommit memory: Invalid argument
+ git-annex: unable to decommit memory: Invalid argument
### What steps will reproduce the problem?
This happens to me syncing any large repository now.
### What version of git-annex are you using? On what operating system?
git-annex version: 6.20161118-g0a34f08
+
uname -r: 4.4.14-11.pvops.qubes.x86_64
+
/etc/system-release: Fedora release 23 (Twenty Three)
### Please provide any additional information below.