I've just tried it with debian:sid container, it seems that there is no test failure about 4 reported failures.
[ OK ] XWindowsKeyStateTests.setActiveGroup_poll_groupIsNotSet (21 ms) [ RUN ] XWindowsKeyStateTests.setActiveGroup_customGroup_groupWasSet [2024-05-27T11:26:31] DEBUG: opening display [2024-05-27T11:26:31] DEBUG: closing display [ OK ] XWindowsKeyStateTests.setActiveGroup_customGroup_groupWasSet (16 ms) [ RUN ] XWindowsKeyStateTests.mapModifiersFromX_zeroState_zeroMask ... [ OK ] XWindowsKeyStateTests.mapModifiersFromX_zeroState_zeroMask (16 ms) [ RUN ] XWindowsKeyStateTests.mapModifiersToX_zeroMask_resultIsTrue [2024-05-27T11:26:31] DEBUG: opening display [2024-05-27T11:26:31] DEBUG: closing display [ OK ] XWindowsKeyStateTests.mapModifiersToX_zeroMask_resultIsTrue (16 ms) [ RUN ] XWindowsKeyStateTests.fakeCtrlAltDel_default_returnsFalse ... [ OK ] XWindowsKeyStateTests.pollActiveModifiers_defaultState_returnsZero (15 ms) [ RUN ] XWindowsKeyStateTests.pollActiveModifiers_shiftKeyDownThenUp_masksAreCorrect [2024-05-27T11:26:31] DEBUG: opening display [2024-05-27T11:26:31] DEBUG2: mapping state: 1 [2024-05-27T11:26:31] DEBUG2: |= modifier: 0 [2024-05-27T11:26:31] DEBUG2: mapping state: 0 [2024-05-27T11:26:31] DEBUG: closing display [ OK ] XWindowsKeyStateTests.pollActiveModifiers_shiftKeyDownThenUp_masksAreCorrect (18 ms) [ RUN ] XWindowsKeyStateTests.pollActiveGroup_defaultState_returnsZero ... [----------] 1 test from CXWindowsScreenTests [ RUN ] CXWindowsScreenTests.fakeMouseMove_nonPrimary_getCursorPosValuesCorrect [2024-05-27T11:26:31] DEBUG: XOpenDisplay(":99") [2024-05-27T11:26:31] DEBUG2: can't read property 230 on window 0x00200004 [2024-05-27T11:26:31] DEBUG: xscreensaver window: 0x00000000 [2024-05-27T11:26:31] DEBUG2: can't read property 230 on window 0x00200004 [2024-05-27T11:26:31] DEBUG: screen shape: 0,0 1280x1024 [2024-05-27T11:26:31] DEBUG: window is 0x00200004 Regards,