#0  unity::dash::previews::CoverArt::SetNoImageAvailable (this=0x4f73850) at /build/buildd/unity-6.4.0/unity-shared/CoverArt.cpp:187
  [Error: /build/buildd/unity-6.4.0/unity-shared/CoverArt.cpp was not found in source tree]
#1  0x00007f72376176e7 in operator() (this=0x2722c60) at /build/buildd/unity-6.4.0/unity-shared/CoverArt.cpp:171
  [Error: /build/buildd/unity-6.4.0/unity-shared/CoverArt.cpp was not found in source tree]
#2  std::_Function_handler<bool(), unity::dash::previews::CoverArt::StartWaiting()::<lambda()> >::_M_invoke(const std::_Any_data &) (__functor=...) at /usr/include/c++/4.6/functional:1764
  [Error: /usr/include/c++/4.6/functional was not found in source tree]
#3  0x00007f7235ccda11 in operator() (this=<optimized out>) at /usr/include/c++/4.6/functional:2161
  [Error: /usr/include/c++/4.6/functional was not found in source tree]
#4  unity::glib::Source::SourceCallback (data=<optimized out>, data@entry=<error reading variable: value has been optimized out>) at /build/buildd/unity-6.4.0/UnityCore/GLibSource.cpp:106
  [Error: /build/buildd/unity-6.4.0/UnityCore/GLibSource.cpp was not found in source tree]
#5  0x00007f725217893b in g_timeout_dispatch (source=source@entry=0x3bebfa0, callback=<optimized out>, user_data=<optimized out>) at /build/buildd/glib2.0-2.33.10/./glib/gmain.c:4018
  [Error: /build/buildd/glib2.0-2.33.10/./glib/gmain.c was not found in source tree]
#6  0x00007f7252177db5 in g_main_dispatch (context=0x18c3000) at /build/buildd/glib2.0-2.33.10/./glib/gmain.c:2707
  [Error: /build/buildd/glib2.0-2.33.10/./glib/gmain.c was not found in source tree]
#7  g_main_context_dispatch (context=context@entry=0x18c3000) at /build/buildd/glib2.0-2.33.10/./glib/gmain.c:3211
  [Error: /build/buildd/glib2.0-2.33.10/./glib/gmain.c was not found in source tree]
#8  0x00007f72521780e8 in g_main_context_iterate (context=0x18c3000, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /build/buildd/glib2.0-2.33.10/./glib/gmain.c:3282
  [Error: /build/buildd/glib2.0-2.33.10/./glib/gmain.c was not found in source tree]
#9  0x00007f72521784e2 in g_main_loop_run (loop=0x18c1f40) at /build/buildd/glib2.0-2.33.10/./glib/gmain.c:3476
  [Error: /build/buildd/glib2.0-2.33.10/./glib/gmain.c was not found in source tree]
#10 0x000000000040270b in main (argc=1, argv=<optimized out>) at /build/buildd/compiz-0.9.8.0/src/main.cpp:262
  [Error: /build/buildd/compiz-0.9.8.0/src/main.cpp was not found in source tree]