All reports of debug-symbols-directly-in-usr-lib-debug for the archive. The extended description of this tag is:
The given debugging symbols-only object is installed directly in /usr/lib/debug, although it should be installed in a subdirectory. For example, debug symbols of a binary in /usr/bin should be placed in /usr/lib/debug/usr/bin. gdb, when looking for debugging symbols, prepends /usr/lib/debug to whatever path it finds in the .gnu_debuglink section, which when using dh_strip(1) is either the path to your binary/library or a build-id based path.
This tag has not been emitted in any package tested by Lintian.