autopilot unity8 fails with "No GSettings schemas are installed on the system"

Image #100, mako:

$ stop unity8
$ autopilot run unity8

It'll crash in the first test case already.

From the crash file (and from a local build as dbgsym wasn't yet in sync):
Using host libthread_db library "/lib/arm-linux-gnueabihf/libthread_db.so.1".
Core was generated by `/usr/bin/unity8'.
Program terminated with signal 5, Trace/breakpoint trap.
#0 __libc_do_syscall () at ../ports/sysdeps/unix/sysv/linux/arm/libc-do-syscall.S:44
44 ../ports/sysdeps/unix/sysv/linux/arm/libc-do-syscall.S: No such file or directory.
(gdb) bt full
#0 __libc_do_syscall () at ../ports/sysdeps/unix/sysv/linux/arm/libc-do-syscall.S:44
No locals.
#1 0x40e375fe in __GI_raise (sig=sig@entry=5) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
        _a1 = <optimized out>
        _a3tmp = 5
        _a1tmp = 0
        _a3 = <optimized out>
        _nametmp = 268
        _a2tmp = 2441
        _a2 = <optimized out>
        _name = <optimized out>
        _sys_result = <optimized out>
        pd = 0x4336b000
        pid = 0
        selftid = 2441
#2 0x41d8a9ba in g_logv (log_domain=0x4182e74c "GLib-GIO", log_level=log_level@entry=G_LOG_LEVEL_ERROR, format=format@entry=0x418491c0 "No GSettings schemas are installed on the system", args=..., args@entry=...) at /build/buildd/glib2.0-2.38.0/./glib/gmessages.c:989
        domain = 0x0
        data = <optimized out>
        depth = 1
        log_func = <optimized out>
        domain_fatal_mask = <optimized out>
        masquerade_fatal = <optimized out>
        test_level = 6
        was_fatal = 0
        was_recursion = 0
        msg = 0x904368 "No GSettings schemas are installed on the system"
        msg_alloc = 0x904368 "No GSettings schemas are installed on the system"
        i = 2
#3 0x41d8aa74 in g_log (log_domain=<optimized out>, log_level=log_level@entry=G_LOG_LEVEL_ERROR, format=0x418491c0 "No GSettings schemas are installed on the system") at /build/buildd/glib2.0-2.38.0/./glib/gmessages.c:1025
        args = {__ap = 0xbe96bf5c}
#4 0x417fe118 in g_settings_set_property (object=0x96a818, prop_id=<optimized out>, value=<optimized out>, pspec=<optimized out>) at /build/buildd/glib2.0-2.38.0/./gio/gsettings.c:487
        default_source = <optimized out>
        schema_id = 0x9042b0 "com.canonical.Unity.Dash"
        settings = 0x96a818
        __FUNCTION__ = "g_settings_set_property"
#5 0x40d34914 in object_set_property (nqueue=<optimized out>, value=<optimized out>, pspec=0x969868, object=<optimized out>) at /build/buildd/glib2.0-2.38.0/./gobject/gobject.c:1366
        tmp_value = {g_type = 64, data = {{v_int = 9454256, v_uint = 9454256, v_long = 9454256, v_ulong = 9454256, v_int64 = 9454256, v_uint64 = 9454256, v_float = 1.32482344e-38, v_double = 4.6710230965884802e-317, v_pointer = 0x9042b0}, {v_int = 0, v_uint = 0,
              v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        redirect = <optimized out>
        enable_diagnostic = 0x40d54138 "0"
        class = 0x967810
        param_id = 2
#6 g_object_new_internal (class=class@entry=0x967810, params=params@entry=0xbe96c0d4, n_params=n_params@entry=1) at /build/buildd/glib2.0-2.38.0/./gobject/gobject.c:1779
        value = <optimized out>
        pspec = <optimized out>
        j = <optimized out>
        node = 0x905000
        nqueue = 0x905018
        object = 0x96a818
        __FUNCTION__ = "g_object_new_internal"
#7 0x40d360d6 in g_object_new_valist (object_type=object_type@entry=9850952, first_property_name=first_property_name@entry=0x41849564 "schema-id", var_args=..., var_args@entry=...) at /build/buildd/glib2.0-2.38.0/./gobject/gobject.c:2002
        stack_params = {{pspec = 0x969868, value = 0xbe96c048}, {pspec = 0x0, value = 0x761965b8}, {pspec = 0x4459d6a0, value = 0xffffffff}, {pspec = 0x40043117 <_dl_lookup_symbol_x+202>, value = 0x40d2896c}, {pspec = 0x8fba08, value = 0x0}, {pspec = 0x0, value = 0x8}, {
            pspec = 0x904f88, value = 0x1}, {pspec = 0x41db2c2b <g_private_get+6>, value = 0x0}, {pspec = 0x8, value = 0x0}, {pspec = 0x962104, value = 0x41e08b80 <allocator>}, {pspec = 0x400467cd <_dl_fixup+132>, value = 0xa}, {pspec = 0x0, value = 0x4336b000}, {
            pspec = 0x41784000, value = 0xde508}, {pspec = 0x4336b4c0, value = 0x0}, {pspec = 0x962104, value = 0x9461ec}, {pspec = 0x400467cd <_dl_fixup+132>, value = 0x0}}
        params = 0xbe96c0d4
        name = 0x0
        n_params = 1
        class = <optimized out>
        unref_class = <optimized out>
        object = <optimized out>
        __PRETTY_FUNCTION__ = "g_object_new_valist"
        __FUNCTION__ = "g_object_new_valist"
#8 0x40d36214 in g_object_new (object_type=9850952, first_property_name=0x41849564 "schema-id") at /build/buildd/glib2.0-2.38.0/./gobject/gobject.c:1559
        var_args = {__ap = 0xbe96c198}
        __PRETTY_FUNCTION__ = "g_object_new"
#9 0x44440354 in unity::dash::GSettingsScopesReader::Impl::Impl (this=0x9620f8, owner=<optimized out>) at /build/buildd/unity-7.1.2+13.10.20131014.1/UnityCore/GSettingsScopes.cpp:73
No locals.
#10 0x444405ae in unity::dash::GSettingsScopesReader::GSettingsScopesReader (this=0x961fc8) at /build/buildd/unity-7.1.2+13.10.20131014.1/UnityCore/GSettingsScopes.cpp:127
No locals.
#11 0x4444063c in unity::dash::GSettingsScopesReader::GetDefault () at /build/buildd/unity-7.1.2+13.10.20131014.1/UnityCore/GSettingsScopes.cpp:159
        main_reader = {<std::__shared_ptr<unity::dash::GSettingsScopesReader, (__gnu_cxx::_Lock_policy)2>> = {_M_ptr = 0x0, _M_refcount = {_M_pi = 0x0}}, <No data fields>}
#12 0x444406e8 in unity::dash::GSettingsScopes::GSettingsScopes (this=0x961978) at /build/buildd/unity-7.1.2+13.10.20131014.1/UnityCore/GSettingsScopes.cpp:165
No locals.
#13 0x41ec7346 in construct<unity::dash::GSettingsScopes> (__p=0x961978, this=<optimized out>) at /usr/include/c++/4.8/bits/shared_ptr_base.h:396
No locals.
#14 _S_construct<unity::dash::GSettingsScopes> (__p=0x961978, __a=...) at /usr/include/c++/4.8/bits/alloc_traits.h:254
No locals.
#15 construct<unity::dash::GSettingsScopes> (__p=0x961978, __a=...) at /usr/include/c++/4.8/bits/alloc_traits.h:393
No locals.
#16 _Sp_counted_ptr_inplace<> (__a=..., this=0x961968) at /usr/include/c++/4.8/bits/shared_ptr_base.h:399
No locals.
#17 construct<std::_Sp_counted_ptr_inplace<unity::dash::GSettingsScopes, std::allocator<unity::dash::GSettingsScopes>, (__gnu_cxx::_Lock_policy)2>, std::allocator<unity::dash::GSettingsScopes> const> (__p=<optimized out>, this=<synthetic pointer>)
    at /usr/include/c++/4.8/ext/new_allocator.h:120
No locals.
#18 _S_construct<std::_Sp_counted_ptr_inplace<unity::dash::GSettingsScopes, std::allocator<unity::dash::GSettingsScopes>, (__gnu_cxx::_Lock_policy)2>, std::allocator<unity::dash::GSettingsScopes> const> (__p=<optimized out>, __a=<synthetic pointer>)
    at /usr/include/c++/4.8/bits/alloc_traits.h:254
No locals.
#19 construct<std::_Sp_counted_ptr_inplace<unity::dash::GSettingsScopes, std::allocator<unity::dash::GSettingsScopes>, (__gnu_cxx::_Lock_policy)2>, std::allocator<unity::dash::GSettingsScopes> const> (__p=<optimized out>, __a=<synthetic pointer>)
    at /usr/include/c++/4.8/bits/alloc_traits.h:393
No locals.
#20 __shared_count<unity::dash::GSettingsScopes, std::allocator<unity::dash::GSettingsScopes> > (__a=..., this=<optimized out>) at /usr/include/c++/4.8/bits/shared_ptr_base.h:522
No locals.
#21 __shared_ptr<std::allocator<unity::dash::GSettingsScopes> > (__a=..., __tag=..., this=<optimized out>) at /usr/include/c++/4.8/bits/shared_ptr_base.h:986
No locals.
#22 shared_ptr<std::allocator<unity::dash::GSettingsScopes> > (__a=..., __tag=..., this=<optimized out>) at /usr/include/c++/4.8/bits/shared_ptr.h:316
No locals.
#23 allocate_shared<unity::dash::GSettingsScopes, std::allocator<unity::dash::GSettingsScopes> > (__a=...) at /usr/include/c++/4.8/bits/shared_ptr.h:598
No locals.
#24 make_shared<unity::dash::GSettingsScopes> () at /usr/include/c++/4.8/bits/shared_ptr.h:614
No locals.
#25 Scopes::Scopes (this=0x968140, parent=<optimized out>) at /home/phablet/unity8/unity8-7.83+13.10.20131016.2/plugins/Unity/scopes.cpp:34
No locals.
#26 0x41ed3890 in QQmlElement (this=0x968140) at /usr/include/qt5/QtQml/qqmlprivate.h:86
No locals.
#27 QQmlPrivate::createInto<Scopes> (memory=0x968140) at /usr/include/qt5/QtQml/qqmlprivate.h:95
No locals.
#28 0x4027dc0a in QQmlVME::run (this=this@entry=0x946190, errors=errors@entry=0x9461f0, interrupt=..., storeJumpTable=storeJumpTable@entry=0x0) at qml/qqmlvme.cpp:628
        o = 0x968140
        parent = <optimized out>
        ddata = <optimized out>
        engine = 0x9206d0
        status = -1
        flags = {i = 5}
        rv = <optimized out>
        handleScope = {isolate_ = 0x8ed038, prev_next_ = 0x0, prev_limit_ = 0x0, is_closed_ = false}
        contextScope = {context_ = {val_ = 0x944920}}
        watcher = {_t = 0x946190, _r = false}
        genericInstr = 0x445f9a58
#29 0x40282ef8 in QQmlVME::execute (this=this@entry=0x946190, errors=errors@entry=0x9461f0, interrupt=...) at qml/qqmlvme.cpp:197
        restore = {ep = 0x921350, oldVME = 0x0}
        rv = 0x0
#30 0x40276d98 in QQmlComponentPrivate::beginCreate (this=0x946138, context=0x945990) at qml/qqmlcomponent.cpp:872
        __PRETTY_FUNCTION__ = "QObject* QQmlComponentPrivate::beginCreate(QQmlContextData*)"
        rv = <optimized out>
#31 0x4027582e in QQmlComponent::create (this=0x921af8, context=0x93f218) at qml/qqmlcomponent.cpp:779
        _qml_memory_scope = {pushed = false}
        rv = <optimized out>
#32 0x40519570 in QQuickView::continueExecute (this=this@entry=0x91faf8) at items/qquickview.cpp:462
        obj = <optimized out>
#33 0x4051991a in QQuickViewPrivate::execute (this=0x920a40) at items/qquickview.cpp:106
        _qml_memory_scope = {pushed = false}
        __PRETTY_FUNCTION__ = "void QQuickViewPrivate::execute()"
#34 0x40519a50 in QQuickView::setSource (this=this@entry=0x91faf8, url=...) at items/qquickview.cpp:235
No locals.
#35 0x0000c5ac in startShell (argc=argc@entry=1, argv=argv@entry=0xbe96c7b4, server=server@entry=0x0) at /home/phablet/unity8/unity8-7.83+13.10.20131016.2/main.cpp:169
        __PRETTY_FUNCTION__ = "int startShell(int, const char**, void*)"
        qmlArgs = {<QObject> = {_vptr.QObject = 0x10e88 <vtable for ApplicationArguments+8>, static staticMetaObject = {d = {superdata = 0x0, stringdata = 0x40a733e8 <qt_meta_stringdata_QObject>, data = 0x40a73acc <qt_meta_data_QObject>,
                static_metacall = 0x4099f4a5 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x919298}, static staticQtMetaObject = {d = {superdata = 0x0,
                stringdata = 0x40abbd30 <qt_meta_stringdata_Qt>, data = 0x40ab9794 <qt_meta_data_Qt>, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = 0x11230 <QObject::staticMetaObject>,
              stringdata = 0xf564 <qt_meta_stringdata_ApplicationArguments>, data = 0xf5e4 <qt_meta_data_ApplicationArguments>, static_metacall = 0xec8d <ApplicationArguments::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0,
              extradata = 0x0}}, m_size = {wd = -1, ht = -1}}
        view = 0x91faf8
        mouseTouchAdaptor = 0x0
        source = {d = 0x945fb8}
        application = 0x8f5598
        args = {<QList<QString>> = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x919348}, d = 0x919348}}, <No data fields>}
        result = <optimized out>
#36 0x0000b29a in main (argc=1, argv=0xbe96c7b4) at /home/phablet/unity8/unity8-7.83+13.10.20131016.2/main.cpp:221
        __PRETTY_FUNCTION__ = "int main(int, const char**)"