TestMainWindow.test_enter_and_clear_number fails: Object not found with name 'Dialog' and properties {'objectName': 'picknumberscreen'}

I ran the lp:sudoku-app (r224) on phone image 117 (com.ubuntu.sudoku 1.1.207), and got this failure:

======================================================================
ERROR: sudoku_app.tests.test_sudoku.TestMainWindow.test_enter_and_clear_number(with touch)
----------------------------------------------------------------------
/var/log/syslog: {{{
Jul 8 08:34:47 ubuntu-phablet NetworkManager[1645]: <info> Auto-activating connection '/262026260068068/context2'.
Jul 8 08:34:47 ubuntu-phablet NetworkManager[1645]: <info> Activation (/ril_0) starting connection '/262026260068068/context2'
Jul 8 08:34:47 ubuntu-phablet NetworkManager[1645]: <info> (/ril_0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Jul 8 08:34:47 ubuntu-phablet NetworkManager[1645]: <info> Activation (/ril_0) Stage 1 of 5 (Device Prepare) scheduled...
Jul 8 08:34:47 ubuntu-phablet NetworkManager[1645]: <info> Activation (/ril_0) Stage 1 of 5 (Device Prepare) started...
Jul 8 08:34:47 ubuntu-phablet NetworkManager[1645]: <info> Activation (/ril_0) Stage 1 of 5 (Device Prepare) complete.
Jul 8 08:34:48 ubuntu-phablet kernel: [ 732.076758] healthd: battery l=87 v=4146 t=35.3 h=2 st=2 c=-17 chg=u
Jul 8 08:34:50 ubuntu-phablet NetworkManager[1645]: <warn> OFONO connection failed: (32) Operation failed
Jul 8 08:34:50 ubuntu-phablet NetworkManager[1645]: <info> (/ril_0): device state change: prepare -> failed (reason 'unknown') [40 120 1]
Jul 8 08:34:50 ubuntu-phablet NetworkManager[1645]: <warn> Activation (/ril_0) failed for connection '/262026260068068/context2'
Jul 8 08:34:50 ubuntu-phablet NetworkManager[1645]: <info> (/ril_0): device state change: failed -> disconnected (reason 'none') [120 30 0]
Jul 8 08:34:50 ubuntu-phablet NetworkManager[1645]: <info> (/ril_0): deactivating device (reason 'none') [0]
Jul 8 08:34:53 ubuntu-phablet NetworkManager[1645]: <info> Auto-activating connection '/262026260068068/context2'.
Jul 8 08:34:53 ubuntu-phablet NetworkManager[1645]: <info> Activation (/ril_0) starting connection '/262026260068068/context2'
Jul 8 08:34:53 ubuntu-phablet NetworkManager[1645]: <info> (/ril_0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Jul 8 08:34:53 ubuntu-phablet NetworkManager[1645]: <info> Activation (/ril_0) Stage 1 of 5 (Device Prepare) scheduled...
Jul 8 08:34:53 ubuntu-phablet NetworkManager[1645]: <info> Activation (/ril_0) Stage 1 of 5 (Device Prepare) started...
Jul 8 08:34:53 ubuntu-phablet NetworkManager[1645]: <info> Activation (/ril_0) Stage 1 of 5 (Device Prepare) complete.
Jul 8 08:34:56 ubuntu-phablet NetworkManager[1645]: <warn> OFONO connection failed: (32) Operation failed
Jul 8 08:34:56 ubuntu-phablet NetworkManager[1645]: <info> (/ril_0): device state change: prepare -> failed (reason 'unknown') [40 120 1]
Jul 8 08:34:56 ubuntu-phablet NetworkManager[1645]: <warn> Activation (/ril_0) failed for connection '/262026260068068/context2'
Jul 8 08:34:56 ubuntu-phablet NetworkManager[1645]: <info> (/ril_0): device state change: failed -> disconnected (reason 'none') [120 30 0]
Jul 8 08:34:56 ubuntu-phablet NetworkManager[1645]: <info> (/ril_0): deactivating device (reason 'none') [0]
Jul 8 08:34:58 ubuntu-phablet kernel: [ 742.074957] healthd: battery l=87 v=4193 t=35.4 h=2 st=2 c=-267 chg=u
Jul 8 08:34:59 ubuntu-phablet NetworkManager[1645]: <info> Auto-activating connection '/262026260068068/context2'.
Jul 8 08:34:59 ubuntu-phablet NetworkManager[1645]: <info> Activation (/ril_0) starting connection '/262026260068068/context2'
Jul 8 08:34:59 ubuntu-phablet NetworkManager[1645]: <info> (/ril_0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Jul 8 08:34:59 ubuntu-phablet NetworkManager[1645]: <info> Activation (/ril_0) Stage 1 of 5 (Device Prepare) scheduled...
Jul 8 08:34:59 ubuntu-phablet NetworkManager[1645]: <info> Activation (/ril_0) Stage 1 of 5 (Device Prepare) started...
Jul 8 08:34:59 ubuntu-phablet NetworkManager[1645]: <info> Activation (/ril_0) Stage 1 of 5 (Device Prepare) complete.
Jul 8 08:35:03 ubuntu-phablet NetworkManager[1645]: <warn> OFONO connection failed: (32) Operation failed
Jul 8 08:35:03 ubuntu-phablet NetworkManager[1645]: <info> (/ril_0): device state change: prepare -> failed (reason 'unknown') [40 120 1]
Jul 8 08:35:03 ubuntu-phablet NetworkManager[1645]: <info> Marking connection '/262026260068068/context2' invalid.
Jul 8 08:35:03 ubuntu-phablet NetworkManager[1645]: <warn> Activation (/ril_0) failed for connection '/262026260068068/context2'
Jul 8 08:35:03 ubuntu-phablet NetworkManager[1645]: <info> (/ril_0): device state change: failed -> disconnected (reason 'none') [120 30 0]
Jul 8 08:35:03 ubuntu-phablet NetworkManager[1645]: <info> (/ril_0): deactivating device (reason 'none') [0]
Jul 8 08:35:08 ubuntu-phablet NetworkManager[1645]: <info> Auto-activating connection '/262026260068068/context3'.
Jul 8 08:35:08 ubuntu-phablet NetworkManager[1645]: <info> Activation (/ril_0) starting connection '/262026260068068/context3'
Jul 8 08:35:08 ubuntu-phablet NetworkManager[1645]: <info> (/ril_0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Jul 8 08:35:08 ubuntu-phablet NetworkManager[1645]: <info> Activation (/ril_0) Stage 1 of 5 (Device Prepare) scheduled...
Jul 8 08:35:08 ubuntu-phablet NetworkManager[1645]: <info> Activation (/ril_0) Stage 1 of 5 (Device Prepare) started...
Jul 8 08:35:08 ubuntu-phablet NetworkManager[1645]: <info> Activation (/ril_0) Stage 1 of 5 (Device Prepare) complete.
Jul 8 08:35:08 ubuntu-phablet kernel: [ 752.092476] healthd: battery l=87 v=4173 t=35.6 h=2 st=2 c=-84 chg=u
Jul 8 08:35:03 ubuntu-phablet ofonod[1251]: message repeated 3 times: [ ril_setup_data_call_cb: reply->status for apn: web.vodafone.de, is non-zero: SERVICE_OPTION_NOT_SUBSCRIBED]
Jul 8 08:35:09 ubuntu-phablet ofonod[1251]: ril_setup_data_call_cb: reply->status for apn: access.vodafone.de, is non-zero: SERVICE_OPTION_NOT_SUBSCRIBED
Jul 8 08:35:09 ubuntu-phablet NetworkManager[1645]: <warn> OFONO connection failed: (32) Operation failed
Jul 8 08:35:09 ubuntu-phablet NetworkManager[1645]: <info> (/ril_0): device state change: prepare -> failed (reason 'unknown') [40 120 1]
Jul 8 08:35:09 ubuntu-phablet NetworkManager[1645]: <warn> Activation (/ril_0) failed for connection '/262026260068068/context3'
Jul 8 08:35:09 ubuntu-phablet NetworkManager[1645]: <info> (/ril_0): device state change: failed -> disconnected (reason 'none') [120 30 0]
Jul 8 08:35:09 ubuntu-phablet NetworkManager[1645]: <info> (/ril_0): deactivating device (reason 'none') [0]
Jul 8 08:35:12 ubuntu-phablet NetworkManager[1645]: <info> Auto-activating connection '/262026260068068/context3'.
Jul 8 08:35:12 ubuntu-phablet NetworkManager[1645]: <info> Activation (/ril_0) starting connection '/262026260068068/context3'
Jul 8 08:35:12 ubuntu-phablet NetworkManager[1645]: <info> (/ril_0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Jul 8 08:35:12 ubuntu-phablet NetworkManager[1645]: <info> Activation (/ril_0) Stage 1 of 5 (Device Prepare) scheduled...
Jul 8 08:35:12 ubuntu-phablet NetworkManager[1645]: <info> Activation (/ril_0) Stage 1 of 5 (Device Prepare) started...
Jul 8 08:35:12 ubuntu-phablet NetworkManager[1645]: <info> Activation (/ril_0) Stage 1 of 5 (Device Prepare) complete.
Jul 8 08:35:15 ubuntu-phablet NetworkManager[1645]: <warn> OFONO connection failed: (32) Operation failed
Jul 8 08:35:15 ubuntu-phablet NetworkManager[1645]: <info> (/ril_0): device state change: prepare -> failed (reason 'unknown') [40 120 1]
Jul 8 08:35:15 ubuntu-phablet NetworkManager[1645]: <warn> Activation (/ril_0) failed for connection '/262026260068068/context3'
Jul 8 08:35:15 ubuntu-phablet NetworkManager[1645]: <info> (/ril_0): device state change: failed -> disconnected (reason 'none') [120 30 0]
Jul 8 08:35:15 ubuntu-phablet NetworkManager[1645]: <info> (/ril_0): deactivating device (reason 'none') [0]
Jul 8 08:35:18 ubuntu-phablet NetworkManager[1645]: <info> Auto-activating connection '/262026260068068/context3'.
Jul 8 08:35:18 ubuntu-phablet NetworkManager[1645]: <info> Activation (/ril_0) starting connection '/262026260068068/context3'
Jul 8 08:35:18 ubuntu-phablet NetworkManager[1645]: <info> (/ril_0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Jul 8 08:35:18 ubuntu-phablet NetworkManager[1645]: <info> Activation (/ril_0) Stage 1 of 5 (Device Prepare) scheduled...
Jul 8 08:35:18 ubuntu-phablet NetworkManager[1645]: <info> Activation (/ril_0) Stage 1 of 5 (Device Prepare) started...
Jul 8 08:35:18 ubuntu-phablet NetworkManager[1645]: <info> Activation (/ril_0) Stage 1 of 5 (Device Prepare) complete.
Jul 8 08:35:18 ubuntu-phablet kernel: [ 762.077491] healthd: battery l=87 v=4190 t=35.6 h=2 st=2 c=-166 chg=u
Jul 8 08:35:22 ubuntu-phablet NetworkManager[1645]: <warn> OFONO connection failed: (32) Operation failed
Jul 8 08:35:22 ubuntu-phablet NetworkManager[1645]: <info> (/ril_0): device state change: prepare -> failed (reason 'unknown') [40 120 1]
Jul 8 08:35:22 ubuntu-phablet NetworkManager[1645]: <warn> Activation (/ril_0) failed for connection '/262026260068068/context3'
Jul 8 08:35:22 ubuntu-phablet NetworkManager[1645]: <info> (/ril_0): device state change: failed -> disconnected (reason 'none') [120 30 0]
Jul 8 08:35:22 ubuntu-phablet NetworkManager[1645]: <info> (/ril_0): deactivating device (reason 'none') [0]
}}}

Application Log (com.ubuntu.sudoku_sudoku_1.1.207): {{{
libust[4676/4679]: Error: Error opening shm /lttng-ust-wait-5 (in get_wait_shm() at lttng-ust-comm.c:886)
libust[4676/4679]: Error: Error opening shm /lttng-ust-wait-5 (in get_wait_shm() at lttng-ust-comm.c:886)
Testability driver loaded. Wire protocol version is "1.4".
callbacks 0xb3b91445 0xb3b9133d
creating surface at (0, 58) with size (768, 1222) with title 'qmlscene: sudoku'Detectable autorepeat not supported.
process 4676: arguments to dbus_connection_close() were incorrect, assertion "connection->generation == _dbus_current_generation" failed in file ../../dbus/dbus-connection.c line 2890.
This is normally a bug in some application using the D-Bus library.
process 4676: arguments to dbus_connection_unref() were incorrect, assertion "connection->generation == _dbus_current_generation" failed in file ../../dbus/dbus-connection.c line 2777.
This is normally a bug in some application using the D-Bus library.
process 4676: arguments to dbus_connection_unref() were incorrect, assertion "connection->generation == _dbus_current_generation" failed in file ../../dbus/dbus-connection.c line 2777.
This is normally a bug in some application using the D-Bus library.
process 4676: arguments to dbus_connection_close() were incorrect, assertion "connection->generation == _dbus_current_generation" failed in file ../../dbus/dbus-connection.c line 2890.
This is normally a bug in some application using the D-Bus library.
process 4676: arguments to dbus_connection_unref() were incorrect, assertion "connection->generation == _dbus_current_generation" failed in file ../../dbus/dbus-connection.c line 2777.
This is normally a bug in some application using the D-Bus library.
process 4676: arguments to dbus_connection_unref() were incorrect, assertion "connection->generation == _dbus_current_generation" failed in file ../../dbus/dbus-connection.c line 2777.
This is normally a bug in some application using the D-Bus library.
process 4676: arguments to dbus_connection_close() were incorrect, assertion "connection->generation == _dbus_current_generation" failed in file ../../dbus/dbus-connection.c line 2890.
This is normally a bug in some application using the D-Bus library.
process 4676: arguments to dbus_connection_unref() were incorrect, assertion "connection->generation == _dbus_current_generation" failed in file ../../dbus/dbus-connection.c line 2777.
This is normally a bug in some application using the D-Bus library.
process 4676: arguments to dbus_message_unref() were incorrect, assertion "message->generation == _dbus_current_generation" failed in file ../../dbus/dbus-message.c line 1617.
This is normally a bug in some application using the D-Bus library.
process 4676: arguments to dbus_connection_unref() were incorrect, assertion "connection->generation == _dbus_current_generation" failed in file ../../dbus/dbus-connection.c line 2777.
This is normally a bug in some application using the D-Bus library.
process 4676: arguments to dbus_message_unref() were incorrect, assertion "message->generation == _dbus_current_generation" failed in file ../../dbus/dbus-message.c line 1617.
This is normally a bug in some application using the D-Bus library.
process 4676: arguments to dbus_connection_unref() were incorrect, assertion "connection->generation == _dbus_current_generation" failed in file ../../dbus/dbus-connection.c line 2777.
This is normally a bug in some application using the D-Bus library.
process 4676: arguments to dbus_connection_unref() were incorrect, assertion "connection->generation == _dbus_current_generation" failed in file ../../dbus/dbus-connection.c line 2777.
This is normally a bug in some application using the D-Bus library.
}}}

Traceback (most recent call last):
  File "/tmp/adt-run.FWoQbp/tree/tests/autopilot/sudoku_app/tests/test_sudoku.py", line 52, in test_enter_and_clear_number
    self.main_view.get_number_dialog()
  File "/tmp/adt-run.FWoQbp/tree/tests/autopilot/sudoku_app/emulators.py", line 31, in get_number_dialog
    return self.wait_select_single("Dialog", objectName="picknumberscreen")
  File "/usr/lib/python3/dist-packages/autopilot/introspection/dbus.py", line 299, in wait_select_single
    return self.select_single(type_name, **kwargs)
  File "/usr/lib/python3/dist-packages/autopilot/introspection/dbus.py", line 248, in select_single
    raise StateNotFoundError(type_name_str, **kwargs)
autopilot.exceptions.StateNotFoundError: Object not found with name 'Dialog' and properties {'objectName': 'picknumberscreen'}.