Preparing to unpack .../libstdc++6-arm64-cross_4.8.4-2ubuntu1~14.04.1cross0.11.1_all.deb ...
Unpacking libstdc++6-arm64-cross (4.8.4-2ubuntu1~14.04.1cross0.11.1) over (4.8.2-13ubuntu1cross0.11) ...
dpkg: error processing archive /var/cache/apt/archives/libstdc++6-arm64-cross_4.8.4-2ubuntu1~14.04.1cross0.11.1_all.deb (--unpack):
 trying to overwrite '/usr/share/gcc-4.8/python/libstdcxx/__init__.py', which is also in package libstdc++6:amd64 4.8.4-2ubuntu1~14.04.1
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
 /var/cache/apt/archives/libstdc++6-arm64-cross_4.8.4-2ubuntu1~14.04.1cross0.11.1_all.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)