#0  0x00007fb5312bf6d5 in check_mp3_support (user_data=<error reading variable: value has been optimized out>) at u1-music-store.c:1062
        music_store = 0x242e5a0
        bus = <optimized out>
        error = 0x0
        empty_file = <optimized out>
        empty_uri = <optimized out>
        launch = 0x38c9b20 "uridecodebin uri=file:///usr/share/libubuntuoneui/1/javascript/empty.mp3 ! fakesink"
#1  0x00007fb55c69d93b in g_timeout_dispatch (source=source@entry=0x2ac8a90, callback=<optimized out>, user_data=<optimized out>) at /build/buildd/glib2.0-2.33.10/./glib/gmain.c:4018
        timeout_source = <optimized out>
        again = <optimized out>
#2  0x00007fb55c69cdb5 in g_main_dispatch (context=0x1b13eb0) at /build/buildd/glib2.0-2.33.10/./glib/gmain.c:2707
        dispatch = 0x7fb55c69d920 <g_timeout_dispatch>
        was_in_call = 0
        user_data = 0x242e5a0
        callback = 0x7fb5312bf650 <check_mp3_support>
        cb_funcs = 0x7fb55c94a9a0
        cb_data = 0x2ac8cd0
        current_source_link = {data = 0x2ac8a90, next = 0x0}
        need_destroy = <optimized out>
        source = 0x2ac8a90
        current = 0x1cf4440
        i = <optimized out>
#3  g_main_context_dispatch (context=context@entry=0x1b13eb0) at /build/buildd/glib2.0-2.33.10/./glib/gmain.c:3211
No locals.
#4  0x00007fb55c69d0e8 in g_main_context_iterate (context=context@entry=0x1b13eb0, 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
        max_priority = 0
        timeout = 0
        some_ready = 1
        nfds = <optimized out>
        allocated_nfds = <optimized out>
        fds = 0x3095e50
#5  0x00007fb55c69d1a4 in g_main_context_iteration (context=0x1b13eb0, context@entry=0x0, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.33.10/./glib/gmain.c:3343
        retval = <optimized out>
#6  0x00007fb55ce3fefc in g_application_run (application=0x1f76120, argc=argc@entry=1, argv=argv@entry=0x7fffe87594e8) at /build/buildd/glib2.0-2.33.10/./gio/gapplication.c:1607
        arguments = 0x1f71d70
        status = 60334320
        i = <optimized out>
        __PRETTY_FUNCTION__ = "g_application_run"
#7  0x0000000000400eef in main (argc=1, argv=0x7fffe87594e8) at main.c:99
        shell = 0x1f76120
        autostarted = 1
        desktop_file_path = <optimized out>
        new_argc = 1
        new_argv = 0x7fffe87594e8