$ apt
apt: relocation error: /usr/lib/x86_64-linux-gnu/libapt-private.so.0.0: symbol _ZN13pkgSourceList16AddVolatileFilesER11CommandLinePSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS8_EE, version APTPKG_5.0 not defined in file libapt-pkg.so.5.0 with link time reference