package cantor-backend-lua (not installed) failed to install/upgrade: 正试图覆盖 /etc/xdg/cantor_lua.knsrc，它同时被包含于软件包 cantor 4:16.04.3-0ubuntu1

root@Thinkpad-S3-Yoga:~# LANG=C apt-get install cantor-backend-lua
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
  cantor-backend-lua
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
2 not fully installed or removed.
Need to get 0 B/25.1 kB of archives.
After this operation, 110 kB of additional disk space will be used.
(Reading database ... 776715 files and directories currently installed.)
Preparing to unpack .../cantor-backend-lua_4%3a16.04.3-0ubuntu1_amd64.deb ...
Unpacking cantor-backend-lua (4:16.04.3-0ubuntu1) ...
dpkg: error processing archive /var/cache/apt/archives/cantor-backend-lua_4%3a16.04.3-0ubuntu1_amd64.deb (--unpack):
 trying to overwrite '/etc/xdg/cantor_lua.knsrc', which is also in package cantor 4:16.04.3-0ubuntu1
Errors were encountered while processing:
 /var/cache/apt/archives/cantor-backend-lua_4%3a16.04.3-0ubuntu1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

ProblemType: Package
DistroRelease: Ubuntu 16.10
Package: cantor-backend-lua (not installed)
ProcVersionSignature: Ubuntu 4.8.0-25.27-generic 4.8.1
Uname: Linux 4.8.0-25-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.3-0ubuntu8
Architecture: amd64
Date: Tue Oct 18 16:02:13 2016
ErrorMessage: 正试图覆盖 /etc/xdg/cantor_lua.knsrc，它同时被包含于软件包 cantor 4:16.04.3-0ubuntu1
RelatedPackageVersions:
 dpkg 1.18.10ubuntu1
 apt 1.3.1
SourcePackage: cantor
Title: package cantor-backend-lua (not installed) failed to install/upgrade: 正试图覆盖 /etc/xdg/cantor_lua.knsrc，它同时被包含于软件包 cantor 4:16.04.3-0ubuntu1
UpgradeStatus: No upgrade log present (probably fresh install)