#0  0xb4453e1c in equal (length=1, b=0xb6b9cbec "/", a=0x90b08719 <Address 0x90b08719 out of bounds>) at ../Source/WTF/wtf/text/StringImpl.h:970
  [Error: ../Source/WTF/wtf/text/StringImpl.h was not found in source tree]
#1  equalInner (caseSensitive=true, matchLength=1, matchString=0xb6b9cbec "/", startOffset=3134975738, stringImpl=0xadaf9fe0) at ../Source/WTF/wtf/text/StringImpl.cpp:1329
  [Error: ../Source/WTF/wtf/text/StringImpl.cpp was not found in source tree]
#2  WTF::StringImpl::endsWith (this=0xadaf9fe0, matchString=0xb6b9cbec "/", matchLength=1, caseSensitive=true) at ../Source/WTF/wtf/text/StringImpl.cpp:1389
  [Error: ../Source/WTF/wtf/text/StringImpl.cpp was not found in source tree]
#3  0xb6a49edc in endsWith<2u> (caseSensitive=true, prefix=..., this=<optimized out>) at ../Source/WTF/wtf/text/StringImpl.h:736
  [Error: ../Source/WTF/wtf/text/StringImpl.h was not found in source tree]
#4  endsWith<2u> (caseSensitive=true, prefix=..., this=0xb744fe90 <WebKit::findWebKitProcess(char const*)::executablePath>) at ../Source/WTF/wtf/text/WTFString.h:289
  [Error: ../Source/WTF/wtf/text/WTFString.h was not found in source tree]
#5  WebCore::pathByAppendingComponent (path=..., component=...) at ../Source/WebCore/platform/gtk/FileSystemGtk.cpp:162
  [Error: ../Source/WebCore/platform/gtk/FileSystemGtk.cpp was not found in source tree]
#6  0xb56de129 in WebKit::findWebKitProcess (processName=processName@entry=0xb6b60c99 "WebKitWebProcess") at ../Source/WebKit2/Shared/gtk/ProcessExecutablePathGtk.cpp:57
  [Error: ../Source/WebKit2/Shared/gtk/ProcessExecutablePathGtk.cpp was not found in source tree]
#7  0xb56de3b0 in WebKit::executablePathOfWebProcess () at ../Source/WebKit2/Shared/gtk/ProcessExecutablePathGtk.cpp:67
  [Error: ../Source/WebKit2/Shared/gtk/ProcessExecutablePathGtk.cpp was not found in source tree]
#8  0xb57635a3 in WebKit::ProcessLauncher::launchProcess (this=0xadb01370) at ../Source/WebKit2/UIProcess/Launcher/gtk/ProcessLauncherGtk.cpp:80
  [Error: ../Source/WebKit2/UIProcess/Launcher/gtk/ProcessLauncherGtk.cpp was not found in source tree]
#9  0xb5763b94 in operator() (c=<optimized out>, this=0xadaf81a0) at ../Source/WTF/wtf/Functional.h:218
  [Error: ../Source/WTF/wtf/Functional.h was not found in source tree]
#10 WTF::BoundFunctionImpl<WTF::FunctionWrapper<void (WebKit::ProcessLauncher::*)()>, void (WebKit::ProcessLauncher*)>::operator()() (this=0xadaf8198) at ../Source/WTF/wtf/Functional.h:496
  [Error: ../Source/WTF/wtf/Functional.h was not found in source tree]
#11 0xb56bb355 in operator() (this=<optimized out>) at ../Source/WTF/wtf/Functional.h:704
  [Error: ../Source/WTF/wtf/Functional.h was not found in source tree]
#12 std::_Function_handler<void (), WTF::Function<void ()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/4.8/functional:2071
  [Error: /usr/include/c++/4.8/functional was not found in source tree]
#13 0xb5cd2652 in std::function<void ()>::operator()() const (this=this@entry=0x8a9f9e4) at /usr/include/c++/4.8/functional:2464
  [Error: /usr/include/c++/4.8/functional was not found in source tree]
#14 0xb6b5f170 in performWork (this=0x8a9f9e0) at ../Source/WebKit2/Platform/gtk/WorkQueueGtk.cpp:49
  [Error: ../Source/WebKit2/Platform/gtk/WorkQueueGtk.cpp was not found in source tree]
#15 WorkQueue::EventSource::performWorkOnce (eventSource=eventSource@entry=0x8a9f9e0) at ../Source/WebKit2/Platform/gtk/WorkQueueGtk.cpp:55
  [Error: ../Source/WebKit2/Platform/gtk/WorkQueueGtk.cpp was not found in source tree]
#16 0xb4811c50 in g_idle_dispatch (source=source@entry=0x8afafb0, callback=0xb6b5f150 <WorkQueue::EventSource::performWorkOnce(WorkQueue::EventSource*)>, user_data=0x8a9f9e0) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:5319
  [Error: /build/buildd/glib2.0-2.40.0/./glib/gmain.c was not found in source tree]
#17 0xb48150a7 in g_main_dispatch (context=0x8ac0400) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:3064
  [Error: /build/buildd/glib2.0-2.40.0/./glib/gmain.c was not found in source tree]
#18 g_main_context_dispatch (context=context@entry=0x8ac0400) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:3663
  [Error: /build/buildd/glib2.0-2.40.0/./glib/gmain.c was not found in source tree]
#19 0xb4815468 in g_main_context_iterate (context=0x8ac0400, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:3734
  [Error: /build/buildd/glib2.0-2.40.0/./glib/gmain.c was not found in source tree]
#20 0xb481576b in g_main_loop_run (loop=0x8a31788) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:3928
  [Error: /build/buildd/glib2.0-2.40.0/./glib/gmain.c was not found in source tree]
#21 0xb6b5e500 in WorkQueue::workQueueThreadBody (this=this@entry=0xadb009a0) at ../Source/WebKit2/Platform/gtk/WorkQueueGtk.cpp:169
  [Error: ../Source/WebKit2/Platform/gtk/WorkQueueGtk.cpp was not found in source tree]
#22 0xb6b5e52d in WorkQueue::startWorkQueueThread (workQueue=workQueue@entry=0xadb009a0) at ../Source/WebKit2/Platform/gtk/WorkQueueGtk.cpp:164
  [Error: ../Source/WebKit2/Platform/gtk/WorkQueueGtk.cpp was not found in source tree]
#23 0xb443ccba in WTF::threadEntryPoint (contextData=0xadb013e8) at ../Source/WTF/wtf/Threading.cpp:69
  [Error: ../Source/WTF/wtf/Threading.cpp was not found in source tree]
#24 0xb443cd6c in WTF::wtfThreadEntryPoint (param=0xadafb0d8) at ../Source/WTF/wtf/ThreadingPthreads.cpp:170
  [Error: ../Source/WTF/wtf/ThreadingPthreads.cpp was not found in source tree]
#25 0xb3b44261 in ?? () from /tmp/apport_sandbox_Y6O4jS/usr/lib/nvidia-304/libGL.so.1