/usr/lib/speech_tools/config/rules/ is in libestools-dev 1:2.5.0-4.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/speech_tools/config/rules/Makefile
/usr/lib/speech_tools/config/rules/bin_process.mak
/usr/lib/speech_tools/config/rules/build_dir.mak
/usr/lib/speech_tools/config/rules/build_tree.sh
/usr/lib/speech_tools/config/rules/c.mak
/usr/lib/speech_tools/config/rules/common_make_rules.mak
/usr/lib/speech_tools/config/rules/compile_options.mak
/usr/lib/speech_tools/config/rules/config_errors.mak
/usr/lib/speech_tools/config/rules/cvs.mak
/usr/lib/speech_tools/config/rules/defaults.mak
/usr/lib/speech_tools/config/rules/doc.mak
/usr/lib/speech_tools/config/rules/install.mak
/usr/lib/speech_tools/config/rules/java.mak
/usr/lib/speech_tools/config/rules/library.mak
/usr/lib/speech_tools/config/rules/make_depend.awk
/usr/lib/speech_tools/config/rules/make_depend.mak
/usr/lib/speech_tools/config/rules/modules.mak
/usr/lib/speech_tools/config/rules/modules.sh
/usr/lib/speech_tools/config/rules/rcs.mak
/usr/lib/speech_tools/config/rules/rules.mak
/usr/lib/speech_tools/config/rules/script_process.awk
/usr/lib/speech_tools/config/rules/targets.mak
/usr/lib/speech_tools/config/rules/test_make_rules.mak
/usr/lib/speech_tools/config/rules/top_level.mak
/usr/lib/speech_tools/config/rules/visual_c.mak