#0  0x00007f23a17bff77 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
        resultvar = 0
        pid = 30613
        selftid = 30613
#1  0x00007f23a17c35e8 in __GI_abort () at abort.c:90
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x7fff36dcc953, sa_sigaction = 0x7fff36dcc953}, sa_mask = {__val = {139791011198820, 139790951119651, 274, 0, 139791009818577, 19755168, 140734113828619, 31784432, 4, 140734113824336, 0, 0, 0, 139791011198163, 139790833393664, 139791011214264}}, sa_flags = -1644430120, sa_restorer = 0x7f239dfbffe6 <__PRETTY_FUNCTION__.14361>}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007f23a17b8d43 in __assert_fail_base (fmt=0x7f23a190f3b8 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x7f239dfbfcd8 "!xcb_xlib_threads_sequence_lost", file=file@entry=0x7f239dfbfb23 "../../src/xcb_io.c", line=line@entry=274, function=function@entry=0x7f239dfbffe6 <__PRETTY_FUNCTION__.14361> "poll_for_event") at assert.c:92
        str = 0x205d8e0 " \357\005\002"
        total = 4096
#3  0x00007f23a17b8df2 in __GI___assert_fail (assertion=assertion@entry=0x7f239dfbfcd8 "!xcb_xlib_threads_sequence_lost", file=file@entry=0x7f239dfbfb23 "../../src/xcb_io.c", line=line@entry=274, function=function@entry=0x7f239dfbffe6 <__PRETTY_FUNCTION__.14361> "poll_for_event") at assert.c:101
No locals.
#4  0x00007f239df50289 in poll_for_event (dpy=dpy@entry=0x1782060) at ../../src/xcb_io.c:271
        req = <optimized out>
        event = <optimized out>
        event_sequence = <optimized out>
        __PRETTY_FUNCTION__ = "poll_for_event"
#5  0x00007f239df5031e in poll_for_response (dpy=dpy@entry=0x1782060) at ../../src/xcb_io.c:289
        response = 0x1
        error = 0x1782060
        req = <optimized out>
        __PRETTY_FUNCTION__ = "poll_for_response"
#6  0x00007f239df505fd in _XEventsQueued (dpy=dpy@entry=0x1782060, mode=mode@entry=2) at ../../src/xcb_io.c:363
        response = <optimized out>
#7  0x00007f239df4273d in XPending (dpy=0x1782060) at ../../src/Pending.c:55
        ret_val = <optimized out>
#8  0x00007f239f1946c6 in gdk_check_xpending (display=0x178e020) at /build/buildd/gtk+2.0-2.24.20/gdk/x11/gdkevents-x11.c:159
No locals.
#9  gdk_event_prepare (source=<optimized out>, timeout=<optimized out>) at /build/buildd/gtk+2.0-2.24.20/gdk/x11/gdkevents-x11.c:2361
        display = 0x178e020
        retval = <optimized out>
#10 0x00007f23a0bdad5d in ?? ()
No symbol table info available.
#11 0x00007fff36dcc068 in ?? ()
No symbol table info available.
#12 0x00007fff36dcc080 in ?? ()
No symbol table info available.
#13 0x00007fff36dcc064 in ?? ()
No symbol table info available.
#14 0x00007fff36dcc0e8 in ?? ()
No symbol table info available.
#15 0xffffffff01797470 in ?? ()
No symbol table info available.
#16 0x0000000001797380 in ?? ()
No symbol table info available.
#17 0x0000000001797470 in ?? ()
No symbol table info available.
#18 0x00007f2300000001 in ?? ()
No symbol table info available.
#19 0x00000000016cd340 in ?? ()
No symbol table info available.
#20 0x0000000001797380 in ?? ()
No symbol table info available.
#21 0x0000000001ed0af0 in ?? ()
No symbol table info available.
#22 0x0000000001797470 in ?? ()
No symbol table info available.
#23 0x00007f239fecc050 in PyGtkWarning () from /tmp/apport_sandbox_2E_ZZ8/usr/lib/python2.7/dist-packages/gtk-2.0/gtk/_gtk.so
No symbol table info available.
#24 0x0000000001ddb540 in ?? ()
No symbol table info available.
#25 0x00007fff36dcc0ec in ?? ()
No symbol table info available.
#26 0x0000000000000001 in ?? ()
No symbol table info available.
#27 0x0000000000000003 in ?? ()
No symbol table info available.
#28 0x00007f23a0bdb5d3 in ?? ()
No symbol table info available.
#29 0x0000000000000000 in ?? ()
No symbol table info available.