#0  0x00007f2611168117 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
        resultvar = 0
        pid = 2229
        selftid = 2229
#1  0x00007f2611169808 in __GI_abort () at abort.c:89
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x7f2612f2ac59, sa_sigaction = 0x7f2612f2ac59}, sa_mask = {__val = {0, 139801481302944, 139801524069799, 140733193388037, 0, 4294967296, 139801471974696, 69589008, 139801481302944, 114, 139801524098437, 0, 228, 0, 0, 139801475876704}}, sa_flags = 2081, sa_restorer = 0x7f26114f07b8 <main_arena+88>}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007f26117821c5 in g_assertion_message (domain=domain@entry=0x7f2612f26e21 "mutter", file=file@entry=0x7f2612f2ac59 "core/window.c", line=line@entry=1778, func=func@entry=0x7f2612f2dba0 <__FUNCTION__.70732> "meta_window_unmanage", message=message@entry=0x5ba8fb0 "assertion failed: (window->display->focus_window != window)") at /build/buildd/glib2.0-2.41.1/./glib/gtestutils.c:2291
        lstr = "1778\000\177\000\000p\023G\302\377\177\000\000\240(7\005\000\000\000\000@\301\362\022&\177\000"
        s = 0x425d810 "\240E\f\006"
#3  0x00007f261178225a in g_assertion_message_expr (domain=domain@entry=0x7f2612f26e21 "mutter", file=file@entry=0x7f2612f2ac59 "core/window.c", line=line@entry=1778, func=func@entry=0x7f2612f2dba0 <__FUNCTION__.70732> "meta_window_unmanage", expr=expr@entry=0x7f2612f2c140 "window->display->focus_window != window") at /build/buildd/glib2.0-2.41.1/./glib/gtestutils.c:2306
        s = 0x5ba8fb0 "assertion failed: (window->display->focus_window != window)"
#4  0x00007f2612ef5dda in meta_window_unmanage (window=0x53725d0, timestamp=timestamp@entry=854617) at core/window.c:1778
        tmp = <optimized out>
        __FUNCTION__ = "meta_window_unmanage"
#5  0x00007f2612ec7971 in event_callback (event=0x7fffc24716d0, data=0x3ced050) at core/display.c:2763
        timestamp = 854617
        window = <optimized out>
        property_for_window = <optimized out>
        frame_was_receiver = <optimized out>
        filter_out_event = 0
        screen = <optimized out>
#6  0x00007f2612f16a13 in filter_func (xevent=0x7fffc24716d0, event=<optimized out>, data=<optimized out>) at ui/ui.c:261
No locals.
#7  0x00007f260e037a81 in gdk_event_apply_filters (xevent=xevent@entry=0x7fffc24716d0, event=event@entry=0x61a1c00, window=window@entry=0x0) at /build/buildd/gtk+3.0-3.12.2/./gdk/x11/gdkeventsource.c:81
        filter = 0x3d039e0
        node = <optimized out>
        tmp_list = 0x2571040
        result = <optimized out>
#8  0x00007f260e037d4e in gdk_event_source_translate_event (xevent=0x7fffc24716d0, event_source=0x2486dd0) at /build/buildd/gtk+3.0-3.12.2/./gdk/x11/gdkeventsource.c:195
        dpy = 0x247a720
        event = 0x61a1c00
        result = GDK_FILTER_CONTINUE
        event_translator = <optimized out>
#9  _gdk_x11_display_queue_events (display=0x2487030) at /build/buildd/gtk+3.0-3.12.2/./gdk/x11/gdkeventsource.c:338
        xevent = {type = 18, xany = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, window = 4194562}, xkey = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, window = 4194562, root = 31457283, subwindow = 0, time = 28481, x = 241, y = 0, x_root = 12517549, y_root = 36242203, state = 0, keycode = 2, same_screen = 1}, xbutton = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, window = 4194562, root = 31457283, subwindow = 0, time = 28481, x = 241, y = 0, x_root = 12517549, y_root = 36242203, state = 0, button = 2, same_screen = 1}, xmotion = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, window = 4194562, root = 31457283, subwindow = 0, time = 28481, x = 241, y = 0, x_root = 12517549, y_root = 36242203, state = 0, is_hint = 2 '\002', same_screen = 1}, xcrossing = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, window = 4194562, root = 31457283, subwindow = 0, time = 28481, x = 241, y = 0, x_root = 12517549, y_root = 36242203, mode = 0, detail = 2, same_screen = 1, focus = 1, state = 16}, xfocus = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, window = 4194562, mode = 31457283, detail = 0}, xexpose = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, window = 4194562, x = 31457283, y = 0, width = 0, height = 0, count = 28481}, xgraphicsexpose = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, drawable = 4194562, x = 31457283, y = 0, width = 0, height = 0, count = 28481, major_code = 0, minor_code = 241}, xnoexpose = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, drawable = 4194562, major_code = 31457283, minor_code = 0}, xvisibility = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, window = 4194562, state = 31457283}, xcreatewindow = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, parent = 4194562, window = 31457283, x = 0, y = 0, width = 28481, height = 0, border_width = 241, override_redirect = 0}, xdestroywindow = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, event = 4194562, window = 31457283}, xunmap = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, event = 4194562, window = 31457283, from_configure = 0}, xmap = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, event = 4194562, window = 31457283, override_redirect = 0}, xmaprequest = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, parent = 4194562, window = 31457283}, xreparent = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, event = 4194562, window = 31457283, parent = 0, x = 28481, y = 0, override_redirect = 241}, xconfigure = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, event = 4194562, window = 31457283, x = 0, y = 0, width = 28481, height = 0, border_width = 241, above = 155659076632510637, override_redirect = 0}, xgravity = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, event = 4194562, window = 31457283, x = 0, y = 0}, xresizerequest = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, window = 4194562, width = 31457283, height = 0}, xconfigurerequest = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, parent = 4194562, window = 31457283, x = 0, y = 0, width = 28481, height = 0, border_width = 241, above = 155659076632510637, detail = 0, value_mask = 4294967297}, xcirculate = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, event = 4194562, window = 31457283, place = 0}, xcirculaterequest = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, parent = 4194562, window = 31457283, place = 0}, xproperty = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, window = 4194562, atom = 31457283, time = 0, state = 28481}, xselectionclear = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, window = 4194562, selection = 31457283, time = 0}, xselectionrequest = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, owner = 4194562, requestor = 31457283, selection = 0, target = 28481, property = 241, time = 155659076632510637}, xselection = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, requestor = 4194562, selection = 31457283, target = 0, property = 28481, time = 241}, xcolormap = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, window = 4194562, colormap = 31457283, new = 0, state = 0}, xclient = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, window = 4194562, message_type = 31457283, format = 0, data = {b = "Ao\000\000\000\000\000\000\361\000\000\000\000\000\000\000\255\000\277", s = {28481, 0, 0, 0, 241, 0, 0, 0, 173, 191}, l = {28481, 241, 155659076632510637, 8589934592, 4294967297}}}, xmapping = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, window = 4194562, request = 31457283, first_keycode = 0, count = 0}, xerror = {type = 18, display = 0x7bdf, resourceid = 0, serial = 38250272, error_code = 2 '\002', request_code = 1 '\001', minor_code = 64 '@'}, xkeymap = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, window = 4194562, key_vector = "\003\000\340\001", '\000' <repeats 12 times>, "Ao\000\000\000\000\000\000\361\000\000\000\000\000\000"}, xgeneric = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, extension = 4194562, evtype = 0}, xcookie = {type = 18, serial = 31711, send_event = 0, display = 0x247a720, extension = 4194562, evtype = 0, cookie = 31457283, data = 0x0}, pad = {18, 31711, 0, 38250272, 4194562, 31457283, 0, 28481, 241, 155659076632510637, 8589934592, 4294967297, -4294967280, -1 <repeats 11 times>}}
        xdisplay = 0x247a720
        event_source = 0x2486dd0
        display_x11 = 0x2487030
#10 0x00007f260e00f449 in gdk_display_get_event (display=display@entry=0x2487030) at /build/buildd/gtk+3.0-3.12.2/./gdk/gdkdisplay.c:320
        __FUNCTION__ = "gdk_display_get_event"
#11 0x00007f260e037b02 in gdk_event_source_dispatch (source=<optimized out>, callback=<optimized out>, user_data=<optimized out>) at /build/buildd/gtk+3.0-3.12.2/./gdk/x11/gdkeventsource.c:360
        display = 0x2487030
        event = <optimized out>
#12 0x00007f261175dde4 in g_main_dispatch (context=0x2443070) at /build/buildd/glib2.0-2.41.1/./glib/gmain.c:3064
        dispatch = 0x7f260e037af0 <gdk_event_source_dispatch>
        prev_source = 0x0
        was_in_call = 0
        user_data = 0x0
        callback = 0x0
        cb_funcs = <optimized out>
        cb_data = 0x0
        need_destroy = <optimized out>
        source = 0x2486dd0
        current = 0x2495010
        i = 0
#13 g_main_context_dispatch (context=context@entry=0x2443070) at /build/buildd/glib2.0-2.41.1/./glib/gmain.c:3663
No locals.
#14 0x00007f261175e028 in g_main_context_iterate (context=0x2443070, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.41.1/./glib/gmain.c:3734
        max_priority = 0
        timeout = 0
        some_ready = 1
        nfds = <optimized out>
        allocated_nfds = 12
        fds = 0x4cae480
#15 0x00007f261175e2ea in g_main_loop_run (loop=0x2449d00) at /build/buildd/glib2.0-2.41.1/./glib/gmain.c:3928
        __FUNCTION__ = "g_main_loop_run"
#16 0x00007f2612ed42c1 in meta_run () at core/main.c:566
        log_domains = {0x0, 0x7f2612f26e21 "mutter", 0x7f2612f24f03 "Gtk", 0x7f2612f24f07 "Gdk", 0x7f2612f24f0b "GLib", 0x7f2612f24f10 "Pango", 0x7f2612f24f16 "GLib-GObject", 0x7f2612f24f23 "GThread"}
        i = <optimized out>
#17 0x0000000000401d11 in main (argc=1, argv=0x7fffc2471ad8) at main.c:437
        ctx = <optimized out>
        error = 0x0
        ecode = <optimized out>
        sender = 0x7f25f800c990