Thread 1 "audacity" received signal SIGSEGV, Segmentation fault.
0x0000555556109cbb in TrackPanelCellIterator::UpdateRect() ()
(gdb) bt
#0  0x0000555556109cbb in TrackPanelCellIterator::UpdateRect() ()
#1  0x00005555561098ae in TrackPanelCellIterator::operator++() ()
#2  0x0000555556107679 in TrackPanel::FindCell(int, int) ()
#3  0x0000555555f47077 in CellularPanel::HandleMotion(wxMouseState&, bool) ()
#4  0x0000555555f4701d in CellularPanel::HandleCursorForPresentMouseState(bool) ()
#5  0x000055555606af3c in AudacityProject::PushState(wxString const&, wxString const&, UndoPush) ()
#6  0x000055555606ada7 in AudacityProject::PushState(wxString const&, wxString const&) ()
#7  0x0000555556068795 in AudacityProject::AddImportedTracks(wxString const&, std::vector<std::vector<std::unique_ptr<WaveTrack, std::default_delete<WaveTrack> >, std::allocator<std::unique_ptr<WaveTrack, std::default_delete<WaveTrack> > > >, std::allocator<std::vector<std::unique_ptr<WaveTrack, std::default_delete<WaveTrack> >, std::allocator<std::unique_ptr<WaveTrack, std::default_delete<WaveTrack> > > > > >&&) ()
#8  0x0000555556068fe8 in AudacityProject::Import(wxString const&, std::vector<std::shared_ptr<WaveTrack>, std::allocator<std::shared_ptr<WaveTrack> > >*) ()
#9  0x0000555556061110 in AudacityProject::OpenFile(wxString const&, bool) ()
#10 0x0000555556060833 in AudacityProject::OpenProject(AudacityProject*, wxString const&, bool) ()
#11 0x0000555555eed3c8 in AudacityApp::MRUOpen(wxString const&) ()
#12 0x0000555555eed63f in AudacityApp::OnMRUFile(wxCommandEvent&) ()
---Type <return> to continue, or q <return> to quit---
#13 0x00007ffff64038ce in wxEvtHandler::ProcessEventIfMatchesId(wxEventTableEntryBase const&, wxEvtHandler*, wxEvent&) ()
    at /lib/x86_64-linux-gnu/libwx_baseu-3.0.so.0
#14 0x00007ffff64039d3 in wxEventHashTable::HandleEvent(wxEvent&, wxEvtHandler*) () at /lib/x86_64-linux-gnu/libwx_baseu-3.0.so.0
#15 0x00007ffff6403d9b in wxEvtHandler::TryHereOnly(wxEvent&) ()
    at /lib/x86_64-linux-gnu/libwx_baseu-3.0.so.0
#16 0x00007ffff6403e23 in wxEvtHandler::ProcessEventLocally(wxEvent&) ()
    at /lib/x86_64-linux-gnu/libwx_baseu-3.0.so.0
#17 0x00007ffff6403e85 in wxEvtHandler::ProcessEvent(wxEvent&) ()
    at /lib/x86_64-linux-gnu/libwx_baseu-3.0.so.0
#18 0x0000555555ea5657 in wxEvtHandler::TryParent(wxEvent&) ()
#19 0x00007ffff6f60d5b in wxWindowBase::TryAfter(wxEvent&) ()
    at /lib/x86_64-linux-gnu/libwx_gtk2u_core-3.0.so.0
#20 0x00007ffff6403be7 in wxEvtHandler::SafelyProcessEvent(wxEvent&) ()
    at /lib/x86_64-linux-gnu/libwx_baseu-3.0.so.0
#21 0x00007ffff6f1365b in wxMenuBase::SendEvent(int, int) ()
    at /lib/x86_64-linux-gnu/libwx_gtk2u_core-3.0.so.0
#22 0x00007ffff6e00d9b in  ()
    at /lib/x86_64-linux-gnu/libwx_gtk2u_core-3.0.so.0
#23 0x00007ffff5727b6d in g_closure_invoke ()
    at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#24 0x00007ffff573a8f3 in  () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#25 0x00007ffff5743882 in g_signal_emit_valist ()
    at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#26 0x00007ffff5743ecf in g_signal_emit ()
    at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#27 0x00007ffff5df2a4a in gtk_widget_activate ()
    at /lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#28 0x00007ffff5cef4bd in gtk_menu_shell_activate_item ()
    at /lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#29 0x00007ffff5cef78e in  () at /lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#30 0x00007ffff5cdd1eb in  () at /lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#31 0x00007ffff5727b6d in g_closure_invoke ()
    at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#32 0x00007ffff573a124 in  () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#33 0x00007ffff5742f43 in g_signal_emit_valist ()
    at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#34 0x00007ffff5743ecf in g_signal_emit ()
    at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#35 0x00007ffff5df3cac in  () at /lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#36 0x00007ffff5cdb48c in gtk_propagate_event ()
    at /lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#37 0x00007ffff5cdb87b in gtk_main_do_event ()
    at /lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#38 0x00007ffff5b4cbac in  () at /lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#39 0x00007ffff5647c3e in g_main_context_dispatch ()
    at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#40 0x00007ffff5647ed8 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#41 0x00007ffff56481d2 in g_main_loop_run ()
    at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#42 0x00007ffff5cda8e7 in gtk_main ()
    at /lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#43 0x00007ffff6d7e6d5 in wxGUIEventLoop::DoRun() ()
    at /lib/x86_64-linux-gnu/libwx_gtk2u_core-3.0.so.0
#44 0x00007ffff62bfea3 in wxEventLoopBase::Run() ()
    at /lib/