/usr/i686-linux-gnu/lib/libgo.so.11 is in libgo11-i386-cross 7.3.0-16ubuntu3cross1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/i686-linux-gnu/lib/libgo.so.11.0.0
/usr/i686-linux-gnu/lib/libgo.so.11.0.0