Debug packages generated too much noise
Most of this is expected to be true and not something which needs fixing.
zstd-debug W: ELF file ('usr/lib/debug/usr/bin/pzstd.debug') lacks FULL RELRO, check LDFLAGS.
zstd-debug W: ELF file ('usr/lib/debug/usr/bin/zstd.debug') lacks FULL RELRO, check LDFLAGS.
zstd-debug W: ELF file ('usr/lib/debug/usr/lib/libzstd.so.1.5.2.debug') lacks FULL RELRO, check LDFLAGS.
zstd-debug W: ELF file ('usr/lib/debug/usr/bin/pzstd.debug') is unstripped.
zstd-debug W: ELF file ('usr/lib/debug/usr/bin/zstd.debug') is unstripped.
zstd-debug W: ELF file ('usr/lib/debug/usr/bin/pzstd.debug') lacks PIE.
zstd-debug W: ELF file ('usr/lib/debug/usr/bin/zstd.debug') lacks PIE.
zstd-debug E: Missing custom license directory (usr/share/licenses/zstd-debug)
zstd-debug E: Symlink (usr/lib/debug/.build-id/38/445b8220c1d41d2b2b63131646c72d06884bb2) points to non-existing ../../../../bin/pzstd
zstd-debug E: Symlink (usr/lib/debug/.build-id/70/e1b456c5813658df6436a3deb71812e75a0267) points to non-existing ../../../../bin/zstd
zstd-debug E: Symlink (usr/lib/debug/.build-id/72/f3511cba7db578f6a2647925f35664da6c838b) points to non-existing ../../../libzstd.so.1.5.2