### Bug Description The unit test `tests/unit/packages/test_apt_cache.py::TestAptStageCache::test_stage_packages` is failing on the Ubuntu 22.04 Github runner. It marks two extra packages for installation - `gcc-13-base` and `libgcc-s1`. It started failing between 2023-Jul-10 and 2023-Jul-12. There was an [update](https://github.com/actions/runner-images/releases/tag/ubuntu22%2F20230710.1) to the Jammy runner in this timeframe. The test was fixed with https://github.com/canonical/craft-parts/pull/494, but the root cause needs to be investigated. ### To Reproduce Run the Github CI workflow without the patch in #494. ### part yaml _No response_ ### Relevant log output ```shell Run make test-units pytest tests/unit ============================= test session starts ============================== platform linux -- Python 3.10.12, pytest-7.4.0, pluggy-1.2.0 rootdir: /home/runner/work/craft-parts/craft-parts configfile: pytest.ini plugins: requests-mock-1.11.0, mock-3.11.1, hypothesis-6.81.1, cov-4.1.0, check-2.1.5 collected 1682 items tests/unit/test_actions.py ..... [ 0%] tests/unit/test_callbacks.py .................. [ 1%] tests/unit/test_ctl.py ...... [ 1%] tests/unit/test_dirs.py ... [ 1%] tests/unit/test_errors.py ................................... [ 3%] tests/unit/test_features.py ... [ 4%] tests/unit/test_infos.py ............................................... [ 6%] ...................................................... [ 10%] tests/unit/test_lifecycle_manager.py ........................... [ 11%] tests/unit/test_parts.py ............................................... [ 14%] ............... [ 15%] tests/unit/test_permissions.py ....... [ 15%] tests/unit/test_sequencer.py ............... [ 16%] tests/unit/test_steps.py ............... [ 17%] tests/unit/test_xattrs.py ...... [ 18%] tests/unit/executor/test_collisions.py ........ [ 18%] tests/unit/executor/test_environment.py .............. [ 19%] tests/unit/executor/test_executor.py ........... [ 19%] tests/unit/executor/test_filesets.py ............................ [ 21%] tests/unit/executor/test_migration.py ................. [ 22%] tests/unit/executor/test_organize.py .......... [ 23%] tests/unit/executor/test_part_handler.py ............................... [ 25%] ............................. [ 26%] tests/unit/executor/test_replace_attr.py ................ [ 27%] tests/unit/executor/test_step_handler.py ........ [ 28%] tests/unit/features/test_parts.py ... [ 28%] tests/unit/features/overlay/test_executor_environment.py .............. [ 29%] tests/unit/features/overlay/test_executor_part_handler.py .............. [ 30%] ........................................................................ [ 34%] ..... [ 34%] tests/unit/features/overlay/test_feature.py . [ 34%] tests/unit/features/overlay/test_lifecycle_manager.py .................. [ 35%] .......... [ 36%] tests/unit/features/overlay/test_parts.py .............................. [ 38%] ........................................ [ 40%] tests/unit/features/overlay/test_sequencer.py .......................... [ 42%] ... [ 42%] tests/unit/features/overlay/test_steps.py ................. [ 43%] tests/unit/features/partitions/test_lifecycle_manager.py ............... [ 44%] ..... [ 44%] tests/unit/features/partitions/test_parts.py ........................... [ 46%] ..................................... [ 48%] tests/unit/overlays/test_chroot.py ...... [ 48%] tests/unit/overlays/test_errors.py ... [ 48%] tests/unit/overlays/test_layers.py ........................... [ 50%] tests/unit/overlays/test_overlay_fs.py ................... [ 51%] tests/unit/overlays/test_overlay_manager.py ............... [ 52%] tests/unit/overlays/test_overlays.py ........................ [ 53%] tests/unit/packages/test_apt_cache.py F........... [ 54%] tests/unit/packages/test_base.py ......... [ 55%] tests/unit/packages/test_chisel.py .... [ 55%] tests/unit/packages/test_deb.py ....................................... [ 57%] tests/unit/packages/test_deb_package.py ..... [ 57%] tests/unit/packages/test_dnf.py ........................ [ 59%] tests/unit/packages/test_errors.py ................. [ 60%] tests/unit/packages/test_normalize.py .................................. [ 62%] .... [ 62%] tests/unit/packages/test_platform.py ................ [ 63%] tests/unit/packages/test_snaps.py ...................................... [ 65%] ... [ 66%] tests/unit/packages/test_yum.py ........................ [ 67%] tests/unit/plugins/test_ant_plugin.py ........... [ 68%] tests/unit/plugins/test_autotools_plugin.py ....... [ 68%] tests/unit/plugins/test_base.py ... [ 68%] tests/unit/plugins/test_cmake_plugin.py .......... [ 69%] tests/unit/plugins/test_dotnet_plugin.py ............. [ 70%] tests/unit/plugins/test_dump_plugin.py ..... [ 70%] tests/unit/plugins/test_go_plugin.py ............... [ 71%] tests/unit/plugins/test_make_plugin.py ....... [ 71%] tests/unit/plugins/test_maven_plugin.py ................... [ 72%] tests/unit/plugins/test_meson_plugin.py ................ [ 73%] tests/unit/plugins/test_nil_plugin.py .... [ 74%] tests/unit/plugins/test_npm_plugin.py ............................. [ 75%] tests/unit/plugins/test_plugins.py ................ [ 76%] tests/unit/plugins/test_properties.py ... [ 76%] tests/unit/plugins/test_python_plugin.py ........... [ 77%] tests/unit/plugins/test_rust_plugin.py ....................... [ 78%] tests/unit/plugins/test_scons_plugin.py ........... [ 79%] tests/unit/plugins/test_validator.py ..... [ 79%] tests/unit/sources/test_base.py ............. [ 80%] tests/unit/sources/test_cache.py .... [ 80%] tests/unit/sources/test_checksum.py ............. [ 81%] tests/unit/sources/test_deb_source.py . [ 81%] tests/unit/sources/test_errors.py .......... [ 82%] tests/unit/sources/test_file_source.py .. [ 82%] tests/unit/sources/test_git_source.py .................................. [ 84%] ....... [ 84%] tests/unit/sources/test_local_source.py .................. [ 85%] tests/unit/sources/test_rpm_source.py ............ [ 86%] tests/unit/sources/test_snap_source.py .......... [ 87%] tests/unit/sources/test_sources.py ..................... [ 88%] tests/unit/sources/test_tar_source.py ..... [ 88%] tests/unit/sources/test_zip_source.py ... [ 88%] tests/unit/state_manager/test_build_state.py ........ [ 89%] tests/unit/state_manager/test_prime_state.py ....... [ 89%] tests/unit/state_manager/test_pull_state.py ....... [ 90%] tests/unit/state_manager/test_reports.py ............... [ 91%] tests/unit/state_manager/test_stage_state.py ........ [ 91%] tests/unit/state_manager/test_state_manager.py ......................... [ 93%] .... [ 93%] tests/unit/state_manager/test_states.py ..................... [ 94%] tests/unit/state_manager/test_step_state.py ..................... [ 95%] tests/unit/utils/test_file_utils.py .................. [ 96%] tests/unit/utils/test_formatting_utils.py ......... [ 97%] tests/unit/utils/test_os_utils.py .................................. [ 99%] tests/unit/utils/test_url_utils.py ......... [100%] =================================== FAILURES =================================== ____________________ TestAptStageCache.test_stage_packages _____________________ self = <tests.unit.packages.test_apt_cache.TestAptStageCache object at 0x7f37f84c47f0> tmpdir = local('/tmp/pytest-of-runner/pytest-0/test_stage_packages0') def test_stage_packages(self, tmpdir): fetch_dir_path = Path(tmpdir, "debs") fetch_dir_path.mkdir(exist_ok=True, parents=True) stage_cache = Path(tmpdir, "cache") stage_cache.mkdir(exist_ok=True, parents=True) AptCache.configure_apt("test_stage_packages") with AptCache(stage_cache=stage_cache) as cache: package_names = {"pciutils"} filtered_names = { "base-files", "libc6", "libkmod2", "libudev1", "zlib1g", # dependencies in focal "dpkg", "libacl1", "libbz2-1.0", "libcrypt1", "liblzma5", "libpcre2-8-0", "libselinux1", "libzstd1", "pci.ids", "perl-base", "tar", } cache.mark_packages(package_names) cache.unmark_packages(unmark_names=filtered_names) marked_packages = cache.get_packages_marked_for_installation() > assert sorted([name for name, _ in marked_packages]) == [ "libpci3", "pciutils", ] E AssertionError: assert ['gcc-13-base...', 'pciutils'] == ['libpci3', 'pciutils'] E At index 0 diff: 'gcc-13-base' != 'libpci3' E Left contains 2 more items, first extra item: 'libpci3' E Full diff: E - ['libpci3', 'pciutils'] E + ['gcc-13-base', 'libgcc-s1', 'libpci3', 'pciutils'] tests/unit/packages/test_apt_cache.py:72: AssertionError =========================== short test summary info ============================ FAILED tests/unit/packages/test_apt_cache.py::TestAptStageCache::test_stage_packages - AssertionError: assert ['gcc-13-base...', 'pciutils'] == ['libpci3', 'pciutils'] At index 0 diff: 'gcc-13-base' != 'libpci3' Left contains 2 more items, first extra item: 'libpci3' Full diff: - ['libpci3', 'pciutils'] + ['gcc-13-base', 'libgcc-s1', 'libpci3', 'pciutils'] ================== 1 failed, 1681 passed in 61.47s (0:01:01) =================== make: *** [Makefile:109: test-units] Error 1 Error: Process completed with exit code 2. ```