Full backtrace downstream. Truncated backtrace: Thread no. 1 (6 frames) #6 std::__throw_bad_function_call at ../../../../../libstdc++-v3/src/c++11/functexcept.cc:139 #7 ~Vector at /usr/src/debug/webkitgtk-2.8.5/Source/WTF/wtf/Vector.h:634 #8 ~ResourceRequestBase at /usr/src/debug/webkitgtk-2.8.5/Source/WebCore/platform/network/ResourceRequestBase.h:54 #9 ~ResourceRequest at /usr/src/debug/webkitgtk-2.8.5/Source/WebCore/platform/network/soup/ResourceRequest.h:36 #10 ~WebNavigationDataStore at /usr/src/debug/webkitgtk-2.8.5/Source/WebKit2/Shared/WebNavigationDataStore.h:38 #11 WebKit::WebFrameLoaderClient::updateGlobalHistory at /usr/src/debug/webkitgtk-2.8.5/Source/WebKit2/WebProcess/WebCoreSupport/WebFrameLoaderClient.cpp:972