.
Thread 3 (Thread 0x7fe9cfeb0700 (LWP 2243)):
#0  0x00007fe9d9736d93 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = 0
        result = <optimized out>
#1  0x00007fe9da185136 in g_main_context_poll (n_fds=1, fds=0x7fe9c0001a20, timeout=-1, context=0x14337c0, priority=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3412
        poll_func = 0x7fe9da1920b0 <g_poll>
#2  g_main_context_iterate (dispatch=1, block=<optimized out>, context=0x14337c0, self=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3113
        timeout = -1
        some_ready = <optimized out>
        fds = 0x7fe9c0001a20
        max_priority = 2147483647
        nfds = 1
        allocated_nfds = <optimized out>
#3  g_main_context_iterate (context=0x14337c0, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3055
        some_ready = -1073735136
#4  0x00007fe9da18559a in g_main_loop_run (loop=0x7fe9c0001a00) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3312
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#5  0x00007fe9cecab75b in dconf_context_thread (data=0x14337c0) at dconfcontext.c:11
        context = 0x14337c0
        loop = <optimized out>
        __PRETTY_FUNCTION__ = "dconf_context_thread"
#6  0x00007fe9da1a67f5 in g_thread_proxy (data=0x7fe9c8003e80) at /build/buildd/glib2.0-2.31.20/./glib/gthread.c:801
        thread = 0x7fe9c8003e80
#7  0x00007fe9d9a14e9a in start_thread (arg=0x7fe9cfeb0700) at pthread_create.c:308
        __res = <optimized out>
        pd = 0x7fe9cfeb0700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 2850492928154957787, 140736400219216, 140642192394688, 21165472, 3, -2856016762987579429, -2856039221839235109}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#8  0x00007fe9d974274d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#9  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (Thread 0x7fe9d06b1700 (LWP 2236)):
#0  0x00007fe9d9736d93 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = 0
        result = <optimized out>
#1  0x00007fe9da185136 in g_main_context_poll (n_fds=3, fds=0x7fe9c80010e0, timeout=-1, context=0x1427af0, priority=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3412
        poll_func = 0x7fe9da1920b0 <g_poll>
#2  g_main_context_iterate (dispatch=1, block=<optimized out>, context=0x1427af0, self=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3113
        timeout = -1
        some_ready = <optimized out>
        fds = 0x7fe9c80010e0
        max_priority = 2147483647
        nfds = 3
        allocated_nfds = <optimized out>
#3  g_main_context_iterate (context=0x1427af0, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3055
        some_ready = -939519776
#4  0x00007fe9da18559a in g_main_loop_run (loop=0x1427aa0) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3312
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#5  0x00007fe9da756426 in gdbus_shared_thread_func (user_data=0x1427ac0) at /build/buildd/glib2.0-2.31.20/./gio/gdbusprivate.c:276
        data = 0x1427ac0
#6  0x00007fe9da1a67f5 in g_thread_proxy (data=0x1425ad0) at /build/buildd/glib2.0-2.31.20/./glib/gthread.c:801
        thread = 0x1425ad0
#7  0x00007fe9d9a14e9a in start_thread (arg=0x7fe9d06b1700) at pthread_create.c:308
        __res = <optimized out>
        pd = 0x7fe9d06b1700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 2850492928154957787, 140736400220848, 140642200787392, 0, 3, -2856024466548295717, -2856039221839235109}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#8  0x00007fe9d974274d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#9  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 0x7fe9dddf5980 (LWP 2184)):
#0  0x00007fe9d9688445 in __GI_raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
        resultvar = 0
        pid = <optimized out>
        selftid = 2184
#1  0x00007fe9d968bbab in __GI_abort () at abort.c:91
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x18, sa_sigaction = 0x18}, sa_mask = {__val = {140642363377641, 140642351418440, 140642426585088, 1024, 0, 35016384, 4294967296, 4294967295, 0, 112, 35043312, 3092568, 0, 19879040, 140736400220929, 140642362839040}}, sa_flags = -574523532, sa_restorer = 0x7fe900000005}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007fe9da1a4dad in g_assertion_message (domain=<optimized out>, file=<optimized out>, line=<optimized out>, func=0x514bc0 "nautilus_view_handle_scroll_event", message=0x7fe9da1cca60 "code should not be reached") at /build/buildd/glib2.0-2.31.20/./glib/gtestutils.c:1860
        lstr = "9486\000\000\000\000\065\342\301\335\351\177\000\000\004\000\000\000\000\000\000\000\300KQ\000\000\000\000"
        s = 0x216b7f0 ""
#3  0x000000000047d761 in nautilus_view_handle_scroll_event (directory_view=<optimized out>, event=<optimized out>) at nautilus-view.c:9486
        __PRETTY_FUNCTION__ = "nautilus_view_handle_scroll_event"
#4  0x000000000047d79f in nautilus_view_scroll_event (widget=0x1c40000, event=0x16de3a0) at nautilus-view.c:9501
        directory_view = <optimized out>
#5  0x00007fe9dbdc23b1 in _gtk_marshal_BOOLEAN__BOXEDv (closure=0x12f5450, return_value=0x7fffbf2463d0, instance=0x1c40000, args=<optimized out>, marshal_data=<optimized out>, n_params=<optimized out>, param_types=0x12f5480) at /build/buildd/gtk+3.0-3.3.18/./gtk/gtkmarshalers.c:130
        cc = 0x12f5450
        data1 = <optimized out>
        data2 = <optimized out>
        callback = <optimized out>
        arg0 = 0x16de3a0
        args_copy = {{gp_offset = 32, fp_offset = 48, overflow_arg_area = 0x7fffbf246550, reg_save_area = 0x7fffbf246490}}
        v_return = <optimized out>
        __PRETTY_FUNCTION__ = "_gtk_marshal_BOOLEAN__BOXEDv"
#6  0x00007fe9da44209a in _g_closure_invoke_va (closure=0x12f5450, return_value=0x7fffbf2463d0, instance=0x1c40000, args=0x7fffbf246478, n_params=1, param_types=<optimized out>) at /build/buildd/glib2.0-2.31.20/./gobject/gclosure.c:840
        marshal = 0x7fe9da4404c0 <g_type_class_meta_marshalv>
        marshal_data = <optimized out>
        in_marshal = 0
        real_closure = 0x12f5430
        __PRETTY_FUNCTION__ = "_g_closure_invoke_va"
#7  0x00007fe9da45bbc5 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=0, var_args=<optimized out>) at /build/buildd/glib2.0-2.31.20/./gobject/gsignal.c:3206
        return_accu = <optimized out>
        accu = {g_type = 20, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        accumulator = 0x12f5510
        emission = {next = 0x0, instance = 0x1c40000, ihint = {signal_id = 44, detail = 0, run_type = G_SIGNAL_RUN_LAST}, state = EMISSION_RUN, chain_type = 24437344}
        signal_id = <optimized out>
        emission_return = {g_type = 20, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        rtype = 20
        static_scope = 0
        closure = 0x12f5450
        run_type = <optimized out>
        hlist = 0xffffffffffffffff
        l = <optimized out>
        fastpath = 1
        instance_and_params = <optimized out>
        signal_return_type = <optimized out>
        param_values = <optimized out>
        node = 0x12f54a0
        i = <optimized out>
        n_params = <optimized out>
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#8  0x00007fe9da45c2e2 in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.31.20/./gobject/gsignal.c:3352
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7fffbf246550, reg_save_area = 0x7fffbf246490}}
#9  0x00007fe9dbf08599 in gtk_widget_event_internal (widget=0x1c40000, event=0x16de3a0) at /build/buildd/gtk+3.0-3.3.18/./gtk/gtkwidget.c:6380
        signal_num = <optimized out>
        return_val = 0
#10 0x00007fe9dbdc013b in propagate_event_up (topmost=<optimized out>, event=<optimized out>, widget=0x1c40000) at /build/buildd/gtk+3.0-3.3.18/./gtk/gtkmain.c:2404
        tmp = <optimized out>
        handled_event = <optimized out>
#11 propagate_event (widget=<optimized out>, event=0x16de3a0, captured=<optimized out>, topmost=0x0) at /build/buildd/gtk+3.0-3.3.18/./gtk/gtkmain.c:2504
        handled_event = 0
        propagate_func = <optimized out>
#12 0x00007fe9dbdc1f41 in gtk_main_do_event (event=0x16de3a0) at /build/buildd/gtk+3.0-3.3.18/./gtk/gtkmain.c:1717
        event_widget = <optimized out>
        grab_widget = 0x175b200
        topmost_widget = <optimized out>
        window_group = <optimized out>
        rewritten_event = <optimized out>
        device = <optimized out>
        tmp_list = <optimized out>
        __PRETTY_FUNCTION__ = "gtk_main_do_event"
#13 0x00007fe9db9f2032 in gdk_event_source_dispatch (source=<optimized out>, callback=<optimized out>, user_data=<optimized out>) at /build/buildd/gtk+3.0-3.3.18/./gdk/x11/gdkeventsource.c:358
        display = <optimized out>
        event = 0x16de3a0
#14 0x00007fe9da184dda in g_main_dispatch (context=0x132e870) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:2510
        dispatch = 0x7fe9db9f2010 <gdk_event_source_dispatch>
        was_in_call = 0
        user_data = 0x0
        callback = 0
        cb_funcs = 0x0
        cb_data = 0x0
        current_source_link = {data = 0x132c160, next = 0x0}
        need_destroy = <optimized out>
        source = 0x132c160
        current = 0x1429240
        i = <optimized out>
#15 g_main_context_dispatch (context=0x132e870) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3047
No locals.
#16 0x00007fe9da1851a0 in g_main_context_iterate (dispatch=1, block=<optimized out>, context=0x132e870, self=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3118
        timeout = 1417
        some_ready = 1
        fds = <optimized out>
        max_priority = 2147483647
        nfds = 9
        allocated_nfds = <optimized out>
#17 g_main_context_iterate (context=0x132e870, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3055
        some_ready = 1
#18 0x00007fe9da185264 in g_main_context_iteration (context=0x132e870, may_block=1) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3179
        retval = <optimized out>
#19 0x00007fe9da722864 in g_application_run (application=0x12ec040, argc=<optimized out>, argv=0x7fffbf246898) at /build/buildd/glib2.0-2.31.20/./gio/gapplication.c:1496
        arguments = 0x12db080
        status = 0
        i = <optimized out>
        __PRETTY_FUNCTION__ = "g_application_run"
#20 0x000000000042b909 in main (argc=2, argv=0x7fffbf246898) at nautilus-main.c:101
        retval = <optimized out>
        application = 0x12ec040