And again:

03:18:54 11: Unexpected mock function call - returning default value.
03:18:54 11: Function call: handle(pointer_event(when=15003323353711999 (51.537392ms ago), from=2, motion, button_state=0, x=5, y=0, dx=5, dy=-2, vscroll=0, hscroll=0, modifiers=none))
03:18:54 11: Returns: false
03:18:54 11: Google Mock tried the following 3 expectations, but none matched:
03:18:54 11: 
03:18:54 11: /<<BUILDDIR>>/mir-0.25.0+yakkety3091bzr3864/tests/acceptance-tests/test_nested_input.cpp:321: tried expectation #0: EXPECT_CALL(nested_event_filter, handle(mt::InputDeviceStateEvent()))...
03:18:54 11: Expected arg #0: input device state event
03:18:54 11: Actual: pointer_event(when=15003323353711999 (20.832019ms ago), from=2, motion, button_state=0, x=5, y=0, dx=5, dy=-2, vscroll=0, hscroll=0, modifiers=none)
03:18:54 11: Expected: to be called once
03:18:54 11: Actual: called once - saturated and active
03:18:54 11: /<<BUILDDIR>>/mir-0.25.0+yakkety3091bzr3864/tests/acceptance-tests/test_nested_input.cpp:326: tried expectation #1: EXPECT_CALL(nested_event_filter, handle(AllOf(mt::PointerEventWithPosition(initial_movement_x, initial_movement_y), mt::PointerEventWithDiff(initial_movement_x, initial_movement_y))))...
03:18:54 11: Expected arg #0: (pointer event with position (30, 30)) and (pointer event with diff (30, 30))
03:18:54 11: Actual: pointer_event(when=15003323353711999 (47.871041ms ago), from=2, motion, button_state=0, x=5, y=0, dx=5, dy=-2, vscroll=0, hscroll=0, modifiers=none)
03:18:54 11: Expected: to be called once
03:18:54 11: Actual: never called - unsatisfied and active
03:18:54 11: /<<BUILDDIR>>/mir-0.25.0+yakkety3091bzr3864/tests/acceptance-tests/test_nested_input.cpp:342: tried expectation #2: EXPECT_CALL(nested_event_filter, handle(AllOf(mt::PointerEventWithPosition(initial_movement_x + second_movement_x, initial_movement_y + second_movement_y), mt::PointerEventWithDiff(second_movement_x, second_movement_y))))...
03:18:54 11: Expected arg #0: (pointer event with position (35, 28)) and (pointer event with diff (5, -2))
03:18:54 11: Actual: pointer_event(when=15003323353711999 (50.149491ms ago), from=2, motion, button_state=0, x=5, y=0, dx=5, dy=-2, vscroll=0, hscroll=0, modifiers=none)
03:18:54 11: Expected: to be called once
03:18:54 11: Actual: never called - unsatisfied and active
03:18:56 11: [2016-12-06 03:18:56.720848] mirserver: Stopping
03:18:56 11: [2016-12-06 03:18:56.763882] mirserver: Stopping
03:18:56 11: /<<BUILDDIR>>/mir-0.25.0+yakkety3091bzr3864/tests/acceptance-tests/test_nested_input.cpp:326: Failure
03:18:56 11: Actual function call count doesn't match EXPECT_CALL(nested_event_filter, handle(AllOf(mt::PointerEventWithPosition(initial_movement_x, initial_movement_y), mt::PointerEventWithDiff(initial_movement_x, initial_movement_y))))...
03:18:56 11: Expected: to be called once
03:18:56 11: Actual: never called - unsatisfied and active
03:18:56 11: /<<BUILDDIR>>/mir-0.25.0+yakkety3091bzr3864/tests/acceptance-tests/test_nested_input.cpp:342: Failure
03:18:56 11: Actual function call count doesn't match EXPECT_CALL(nested_event_filter, handle(AllOf(mt::PointerEventWithPosition(initial_movement_x + second_movement_x, initial_movement_y + second_movement_y), mt::PointerEventWithDiff(second_movement_x, second_movement_y))))...
03:18:56 11: Expected: to be called once
03:18:56 11: Actual: never called - unsatisfied and active
03:18:56 11: [ FAILED ] NestedInputWithMouse.mouse_pointer_coordinates_in_nested_server_are_accumulated (5282 ms)

https://mir-jenkins.ubuntu.com/job/build-2-binpkg-mir/arch=amd64,compiler=gcc,platform=mesa,release=yakkety/3062/consoleFull