[Development] [CI] build failures

[Kurt Pattyn]

The following builds

win32-msvc2010_developer-build_qtnamespace_Windows_7
win32-msvc2010_developer-build_angle_Windows_7
macx-ios-clang_OSX_10.8

fail with the following errors:

win32-msvc2010_developer-build_qtnamespace_Windows_7
===============================================
jom: C:\work\build\qt\qtdeclarative\src\quick\Makefile.Release [.obj\release\qquickdroparea.obj] Error 2
jom: C:\work\build\qt\qtdeclarative\src\quick\Makefile.Release [.obj\release\qquickshadereffect.obj] Error 2
jom: C:\work\build\qt\qtdeclarative\src\quick\Makefile.Release [.obj\release\qquickcanvasitem.obj] Error 2
jom: C:\work\build\qt\qtdeclarative\src\quick\Makefile.Release [.obj\release\qquickcontext2d.obj] Error 2
jom: C:\work\build\qt\qtdeclarative\src\quick\Makefile.Release [.obj\release\qquickcontext2dtile.obj] Error 2

win32-msvc2010_developer-build_angle_Windows_7
========================================
jom: C:\work\build\qt\qtdeclarative\src\qml\Makefile.Release [.obj\release\qqmlinstruction.obj] Error 2
jom: C:\work\build\qt\qtdeclarative\src\qml\Makefile.Release [.obj\release\qqmlcompileddata.obj] Error 2
jom: C:\work\build\qt\qtdeclarative\src\qml\Makefile.Release [.obj\release\qqmltypenamecache.obj] Error 2
jom: C:\work\build\qt\qtdeclarative\src\qml\Makefile.Release [.obj\release\qqmllocale.obj] Error 2
jom: C:\work\build\qt\qtdeclarative\src\qml\Makefile.Release [.obj\release\qqmlmemoryprofiler.obj] Error 2
jom: C:\work\build\qt\qtdeclarative\src\Makefile [sub-qml-make_first-ordered] Error 2

macx-ios-clang_OSX_10.8
=====================
Code Sign error: The identity 'iPhone Developer' doesn't match any valid, non-expired certificate/private key pair in your keychains


The logfile for the Windows_8 64-bit build is truncated:
win64-msvc2012_developer-build_qtnamespace_Windows_8
===============================================
moc_qkeysequenceedit.cpp
        C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\INCLUDE\algorithm(3776) : see reference to function template instantiation 'void std::_Median<_RanIt,bool(__cdecl *)(const TestNamespace::QGraphicsItem *,const TestNamespace::QGraphicsItem *)>(_RanIt,_RanIt,_RanIt,_Pr)' being compiled

I see that the qt5 stable builds pass. The QtWebSockets playground project fails with the above errors.
Is this a known issue?