RViz Crashes with Out of Memory Exception

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I am repeatedly publishing Markers and MarkerArrays to RViz and then, randomly, this error occurs. Does anyone know what might be causing this?

I am running RViz from inside a docker container using the X11 server of my Ubuntu 12.04 host. The docker container is running ROS Jade and Ubuntu 14.04. RViz reports the OpenGL version as 4.5.

[ WARN] [1454370341.533289122]: OGRE EXCEPTION(7:InternalErrorException): Index Buffer: Out of memory in GLHardwareIndexBuffer::lock at /build/buildd/ogre-1.8-1.8.1+dfsg/RenderSystems/GL/src/OgreGLHardwareIndexBuffer.cpp (line 121)
Qt has caught an exception thrown from an event handler. Throwing
exceptions from an event handler is not supported in Qt. You must
reimplement QApplication::notify() and catch all exceptions there.

terminate called after throwing an instance of 'Ogre::InternalErrorException'
  what():  OGRE EXCEPTION(7:InternalErrorException): Index Buffer: Out of memory in GLHardwareIndexBuffer::lock at /build/buildd/ogre-1.8-1.8.1+dfsg/RenderSystems/GL/src/OgreGLHardwareIndexBuffer.cpp (line 121)
bash: line 1:  2140 Aborted                 (core dumped) rosrun rviz rviz --no-stereo -d /home/bidski/catkin_ws/src/structure_modeller/structure_modeller.rviz