/usr/lib/ is in libaunit2-dev 1.03-7.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ada/
/usr/lib/ada/adalib/
/usr/lib/ada/adalib/aunit/
/usr/lib/ada/adalib/aunit/aunit-test_results-text_reporter.ali
/usr/lib/ada/adalib/aunit/aunit-tests.ali
/usr/lib/ada/adalib/aunit/aunit.ali
/usr/lib/ada/adalib/aunit/aunit-test_runner.ali
/usr/lib/ada/adalib/aunit/aunit-test_results.ali
/usr/lib/ada/adalib/aunit/aunit-lists.ali
/usr/lib/ada/adalib/aunit/aunit-assertions.ali
/usr/lib/ada/adalib/aunit/aunit-test_cases-registration.ali
/usr/lib/ada/adalib/aunit/aunit-test_suites.ali
/usr/lib/ada/adalib/aunit/aunit-test_cases.ali
/usr/lib/ada/adalib/aunit/aunit-options.ali
/usr/lib/libaunit.a
/usr/lib/libaunit.so