/lib/x86_64-linux-gnu/libhistory.so.6 is in libreadline6 6.2+dfsg-0.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /lib/x86_64-linux-gnu/libhistory.so.6.2
/lib/x86_64-linux-gnu/libhistory.so.6.2