save to pdf hogs all memory

Attempting to save a svg file hogs all of my memory (16GB). I stripped out almost everything from my svg file and can reproduce the problem with a single remaining object. That stripped down svg file is attached to this report as "test5.svg".

Description: Ubuntu 16.04.1 LTS
Release: 16.04
inkscape:
  Installed: 0.91-7ubuntu2
  Candidate: 0.91-7ubuntu2
  Version table:
 *** 0.91-7ubuntu2 500
        500 http://us.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: inkscape 0.91-7ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-38.57-generic 4.4.19
Uname: Linux 4.4.0-38-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: KDE
Date: Sun Oct 30 08:06:48 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2016-09-09 (51 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
SourcePackage: inkscape
UpgradeStatus: No upgrade log present (probably fresh install)