/usr/share/piuparts/known_problems/ is in piuparts-master 0.77.
This file is owned by root:root, with mode 0o755.
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/usr/share/piuparts/known_problems/alternatives_after_purge_error.conf
/usr/share/piuparts/known_problems/alternatives_after_purge_issue.conf
/usr/share/piuparts/known_problems/bin_or_sbin_binary_requires_usr_lib_library_inadequate_issue.conf
/usr/share/piuparts/known_problems/boring_broken_symlink_inadequate_issue.conf
/usr/share/piuparts/known_problems/boring_obsolete_conffile_inadequate_issue.conf
/usr/share/piuparts/known_problems/broken_binfmt_detector_inadequate_issue.conf
/usr/share/piuparts/known_problems/broken_binfmt_interpreter_inadequate_issue.conf
/usr/share/piuparts/known_problems/broken_symlinks_error.conf
/usr/share/piuparts/known_problems/broken_symlinks_issue.conf
/usr/share/piuparts/known_problems/command_not_found_error.conf
/usr/share/piuparts/known_problems/command_not_found_issue.conf
/usr/share/piuparts/known_problems/conffile_prompt_error.conf
/usr/share/piuparts/known_problems/cron_error_after_removal_error.conf
/usr/share/piuparts/known_problems/db_setup_error.conf
/usr/share/piuparts/known_problems/db_setup_issue.conf
/usr/share/piuparts/known_problems/debsums_mismatch_error.conf
/usr/share/piuparts/known_problems/debsums_mismatch_issue.conf
/usr/share/piuparts/known_problems/dependency_error.conf
/usr/share/piuparts/known_problems/disappeared_files_after_purge_error.conf
/usr/share/piuparts/known_problems/diversion_error.conf
/usr/share/piuparts/known_problems/files_in_usr_local_error.conf
/usr/share/piuparts/known_problems/immediate_configuration_error.conf
/usr/share/piuparts/known_problems/inadequate_exit_issue.conf
/usr/share/piuparts/known_problems/incompatible_licenses_inadequate_issue.conf
/usr/share/piuparts/known_problems/initdscript_lsb_header_issue.conf
/usr/share/piuparts/known_problems/insserv_error.conf
/usr/share/piuparts/known_problems/installs_over_symlink_error.conf
/usr/share/piuparts/known_problems/installs_over_symlink_issue.conf
/usr/share/piuparts/known_problems/ldd_inadequate_issue.conf
/usr/share/piuparts/known_problems/library_not_found_inadequate_issue.conf
/usr/share/piuparts/known_problems/logrotate_error_after_removal_error.conf
/usr/share/piuparts/known_problems/maintainer_script_issue.conf
/usr/share/piuparts/known_problems/missing-symbol-version-information_inadequate_issue.conf
/usr/share/piuparts/known_problems/missing_alternative_inadequate_issue.conf
/usr/share/piuparts/known_problems/missing_copyright_file_inadequate_issue.conf
/usr/share/piuparts/known_problems/missing_md5sums_error.conf
/usr/share/piuparts/known_problems/missing_md5sums_issue.conf
/usr/share/piuparts/known_problems/missing_pkgconfig-dependency_issue.conf
/usr/share/piuparts/known_problems/modified_files_after_purge_error.conf
/usr/share/piuparts/known_problems/module_build_error_issue.conf
/usr/share/piuparts/known_problems/needs_rebuild_issue.conf
/usr/share/piuparts/known_problems/obsolete_conffiles_error.conf
/usr/share/piuparts/known_problems/obsolete_conffiles_issue.conf
/usr/share/piuparts/known_problems/overwrite_other_packages_files_error.conf
/usr/share/piuparts/known_problems/owned_files_after_purge_error.conf
/usr/share/piuparts/known_problems/owned_files_after_purge_issue.conf
/usr/share/piuparts/known_problems/owned_files_by_many_packages_error.conf
/usr/share/piuparts/known_problems/packages_have_been_kept_back_error.conf
/usr/share/piuparts/known_problems/packages_have_been_kept_back_issue.conf
/usr/share/piuparts/known_problems/piuparts-depends-dummy_error.conf
/usr/share/piuparts/known_problems/piuparts-depends-dummy_issue.conf
/usr/share/piuparts/known_problems/post_installation_script_error.conf
/usr/share/piuparts/known_problems/post_removal_script_error.conf
/usr/share/piuparts/known_problems/pre_depends_error.conf
/usr/share/piuparts/known_problems/pre_installation_script_error.conf
/usr/share/piuparts/known_problems/pre_removal_script_error.conf
/usr/share/piuparts/known_problems/problems_and_no_force_error.conf
/usr/share/piuparts/known_problems/problems_and_no_force_issue.conf
/usr/share/piuparts/known_problems/processes_running_error.conf
/usr/share/piuparts/known_problems/program_name_collision_inadequate_issue.conf
/usr/share/piuparts/known_problems/py_file_not_bytecompiled_inadequate_issue.conf
/usr/share/piuparts/known_problems/pyshared_file_not_bytecompiled_inadequate_issue.conf
/usr/share/piuparts/known_problems/resource_violation_error.conf
/usr/share/piuparts/known_problems/symbol-size-mismatch_inadequate_issue.conf
/usr/share/piuparts/known_problems/test_was_skipped_issue.conf
/usr/share/piuparts/known_problems/unclassified_failures.conf
/usr/share/piuparts/known_problems/undefined_symbol_inadequate_issue.conf
/usr/share/piuparts/known_problems/unknown_inadequate_issue.conf
/usr/share/piuparts/known_problems/unknown_purge_error.conf
/usr/share/piuparts/known_problems/unowned_files_after_purge_error.conf
/usr/share/piuparts/known_problems/unowned_files_after_purge_issue.conf
/usr/share/piuparts/known_problems/unowned_lib_symlink_error.conf
/usr/share/piuparts/known_problems/unowned_lib_symlink_issue.conf
/usr/share/piuparts/known_problems/used_exception_issue.conf