/usr/lib/gcc-cross/arm-linux-gnueabi/8/libgo.so is in gccgo-8-arm-linux-gnueabi 8-20180414-1ubuntu2cross1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/gcc-cross/arm-linux-gnueabi/8/../../../../arm-linux-gnueabi/lib/libgo.so.13