/usr/lib/llvm-3.8/bin/lldb-server is in lldb-3.8 1:3.8-2ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/llvm-3.8/bin/lldb-server-3.8.0
/usr/lib/llvm-3.8/bin/lldb-server-3.8.0