LuxRender has broken dependencies in the rawhide tree:
On x86_64:
LuxRender-blender-1.3.1-31.fc25.x86_64 requires blender(ABI) = 0:2.76
On i386:
LuxRender-blender-1.3.1-31.fc25.i686 requires blender(ABI) = 0:2.76
Please resolve this as soon as possible.