.
Thread 4 (Thread 0x7f5d66db7700 (LWP 1972)):
#0  0x00007f5d7205e9e3 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  0x00007f5d708c1084 in g_main_loop_new (context=0x7f5d60010b90, is_running=21) at /build/buildd/glib2.0-2.33.12/./glib/gmain.c:3379
        __n = 1
        __s = 16
        __p = <optimized out>
        loop = <optimized out>
#2  0x00007f5d60010b20 in ?? ()
No symbol table info available.
#3  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 3 (Thread 0x7f5d6e88d700 (LWP 1965)):
#0  0x00007f5d7205e9e3 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  0x00007f5d708c1084 in g_main_loop_new (context=0x1d1ec70, is_running=1) at /build/buildd/glib2.0-2.33.12/./glib/gmain.c:3379
        __n = 1
        __s = 16
        __p = <optimized out>
        loop = <optimized out>
#2  0x0000000001d1ec70 in ?? ()
No symbol table info available.
#3  0x0000000000000001 in ?? ()
No symbol table info available.
#4  0x00007f5d70b6eee0 in ?? () from /tmp/tmpkJbfG0/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f5d6e88d9c0 in ?? ()
No symbol table info available.
#6  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (Thread 0x7f5d675b8700 (LWP 1971)):
#0  0x00007f5d7205e9e3 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  0x00007f5d708c1084 in g_main_loop_new (context=0x1d5cc10, is_running=1) at /build/buildd/glib2.0-2.33.12/./glib/gmain.c:3379
        __n = 1
        __s = 16
        __p = <optimized out>
        loop = <optimized out>
#2  0x0000000001d5cc10 in ?? ()
No symbol table info available.
#3  0x0000000000000001 in ?? ()
No symbol table info available.
#4  0x00007fffa551ee50 in ?? ()
No symbol table info available.
#5  0x00007f5d675b89c0 in ?? ()
No symbol table info available.
#6  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 0x7f5d72cfc780 (LWP 1962)):
#0  __cxxabiv1::__dynamic_cast (src_ptr=0x7f5d5ceb0b90, src_type=0x7f5d5ceb0ae0, dst_type=0x7f5d5ceb49f0, src2dst=0) at ../../../../src/libstdc++-v3/libsupc++/dyncast.cc:61
        vtable = 0x7f5d5cab8fd0
        whole_type = 0x401f0f00000000
        whole_ptr = 0x849e6c8b51ec8f
        result = {dst_ptr = 0x0, whole2dst = __cxxabiv1::__class_type_info::__unknown, whole2src = __cxxabiv1::__class_type_info::__unknown, dst2src = __cxxabiv1::__class_type_info::__unknown, whole_details = 0}
#1  0x00007f5d5cab9cf6 in unity::launcher::LauncherModel::GetSublist<unity::launcher::BamfLauncherIcon> (this=0x270cc20) at /build/buildd/unity-6.4.0/launcher/LauncherModel.h:117
        var = <optimized out>
        result = {<std::_List_base<nux::ObjectPtr<unity::launcher::AbstractLauncherIcon>, std::allocator<nux::ObjectPtr<unity::launcher::AbstractLauncherIcon> > >> = {_M_impl = {<std::allocator<std::_List_node<nux::ObjectPtr<unity::launcher::AbstractLauncherIcon> > >> = {<__gnu_cxx::new_allocator<std::_List_node<nux::ObjectPtr<unity::launcher::AbstractLauncherIcon> > >> = {<No data fields>}, <No data fields>}, _M_node = {_M_next = 0x7fffa551f800, _M_prev = 0x7fffa551f800}}}, <No data fields>}
        it = {_M_current = 0x270b250}
#2  0x00007f5d5cab41b9 in unity::launcher::Controller::Impl::SortAndUpdate (this=<optimized out>) at /build/buildd/unity-6.4.0/launcher/LauncherController.cpp:381
        shortcut = 1
        launchers = {<std::_List_base<nux::ObjectPtr<unity::launcher::AbstractLauncherIcon>, std::allocator<nux::ObjectPtr<unity::launcher::AbstractLauncherIcon> > >> = {_M_impl = {<std::allocator<std::_List_node<nux::ObjectPtr<unity::launcher::AbstractLauncherIcon> > >> = {<__gnu_cxx::new_allocator<std::_List_node<nux::ObjectPtr<unity::launcher::AbstractLauncherIcon> > >> = {<No data fields>}, <No data fields>}, _M_node = {_M_next = 0x7fffa551f800, _M_prev = 0x7fffa551f800}}}, <No data fields>}
#3  0x00007f5d5cab9b5c in operator() (_A_a1=..., this=0x34c5678) at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:1851
No locals.
#4  operator()<const nux::ObjectPtr<unity::launcher::AbstractLauncherIcon>&> (_A_arg1=..., this=0x34c5670) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:84
No locals.
#5  sigc::internal::slot_call1<sigc::bound_mem_functor1<void, unity::launcher::Controller::Impl, nux::ObjectPtr<unity::launcher::AbstractLauncherIcon> >, void, nux::ObjectPtr<unity::launcher::AbstractLauncherIcon> >::call_it (rep=0x34c5640, a_1=...) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:137
        typed_rep = 0x34c5640
#6  0x00007f5d5cace785 in emit (_A_a1=..., impl=<optimized out>) at /usr/include/sigc++-2.0/sigc++/signal.h:1010
        it = <optimized out>
        exec = {sig_ = 0x2621710}
        slots = {slots_ = @0x2621718, placeholder = {_M_node = 0x4e194a0}}
#7  emit (_A_a1=..., this=<optimized out>) at /usr/include/sigc++-2.0/sigc++/signal.h:2781
No locals.
#8  unity::launcher::LauncherModel::RemoveIcon (this=<optimized out>, icon=...) at /build/buildd/unity-6.4.0/launcher/LauncherModel.cpp:129
        size = <optimized out>
#9  0x00007f5d5cace8c3 in operator() (this=0x2888f50) at /build/buildd/unity-6.4.0/launcher/LauncherModel.cpp:137
No locals.
#10 std::_Function_handler<bool(), unity::launcher::LauncherModel::OnIconRemove(unity::launcher::AbstractLauncherIcon::Ptr)::<lambda()> >::_M_invoke(const std::_Any_data &) (__functor=...) at /usr/include/c++/4.6/functional:1764
No locals.
#11 0x00007f5d56b5ea11 in operator() (this=<optimized out>) at /usr/include/c++/4.6/functional:2161
No locals.
#12 unity::glib::Source::SourceCallback (data=<optimized out>) at /build/buildd/unity-6.4.0/UnityCore/GLibSource.cpp:106
        self = <optimized out>
#13 0x00007f5d708c193b in g_main_context_is_owner (context=0x401f0f00000000) at /build/buildd/glib2.0-2.33.12/./glib/gmain.c:3924
        is_owner = <optimized out>
#14 0x00007f5d70b6e9a0 in thread_context_stack () from /tmp/tmpkJbfG0/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#15 0x0000000000000000 in ?? ()
No symbol table info available.