Botan compile error VS2015

I have a strange situation here. I am trying to use the Botan crypto library with VS2015 (because some other parts of the project use some heavy C++11 code which VS2013 is unable to compile) and I get a pretty long compilation error (see below).

After trying out various things, I came to the conclusion, that even if one of the botan headers is included in the compiled c++ source file, the compiler will throw the error below. Right now I have a single line in the file:

#include <botan/botan.h>

and this is the error I get:

    C:\Program Files\Microsoft Visual Studio 14.0\VC\INCLUDE\xmemory0(876): error C2664: 'Botan::secure_allocator<_Newfirst>::secure_allocator(const Botan::secure_allocator<_Newfirst> &)': cannot convert
argument 1 from 'std::_Wrap_alloc<Botan::secure_allocator<Botan::byte>>' to 'const Botan::secure_allocator<_Newfirst> &'
        with
        [
            _Newfirst=std::_Container_proxy
        ]
C:\Program Files\Microsoft Visual Studio 14.0\VC\INCLUDE\xmemory0(876): note: Reason: cannot convert from 'std::_Wrap_alloc<Botan::secure_allocator<Botan::byte>>' to 'const Botan::secure_allocator<_Ne
wfirst>'
        with
        [
            _Newfirst=std::_Container_proxy
        ]
C:\Program Files\Microsoft Visual Studio 14.0\VC\INCLUDE\xmemory0(876): note: No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
C:\Program Files\Microsoft Visual Studio 14.0\VC\INCLUDE\vector(587): note: see reference to function template instantiation 'std::_Wrap_alloc<Botan::secure_allocator<_Newfirst>>::_Wrap_alloc<std::_Wr
ap_alloc<Botan::secure_allocator<Botan::byte>>>(_Other &) noexcept' being compiled
        with
        [
            _Newfirst=std::_Container_proxy,
            _Other=std::_Wrap_alloc<Botan::secure_allocator<Botan::byte>>
        ]
C:\Program Files\Microsoft Visual Studio 14.0\VC\INCLUDE\vector(587): note: see reference to function template instantiation 'std::_Wrap_alloc<Botan::secure_allocator<_Newfirst>>::_Wrap_alloc<std::_Wr
ap_alloc<Botan::secure_allocator<Botan::byte>>>(_Other &) noexcept' being compiled
        with
        [
            _Newfirst=std::_Container_proxy,
            _Other=std::_Wrap_alloc<Botan::secure_allocator<Botan::byte>>
        ]
C:\Program Files\Microsoft Visual Studio 14.0\VC\INCLUDE\vector(585): note: while compiling class template member function 'void std::_Vector_alloc<std::_Vec_base_types<_Ty,_Alloc>>::_Free_proxy(void)
'
        with
        [
            _Ty=Botan::byte,
            _Alloc=Botan::secure_allocator<Botan::byte>
        ]
C:\Program Files\Microsoft Visual Studio 14.0\VC\INCLUDE\vector(552): note: see reference to function template instantiation 'void std::_Vector_alloc<std::_Vec_base_types<_Ty,_Alloc>>::_Free_proxy(voi
d)' being compiled
        with
        [
            _Ty=Botan::byte,
            _Alloc=Botan::secure_allocator<Botan::byte>
        ]
C:\Program Files\Microsoft Visual Studio 14.0\VC\INCLUDE\vector(679): note: see reference to class template instantiation 'std::_Vector_alloc<std::_Vec_base_types<_Ty,_Alloc>>' being compiled
        with
        [
            _Ty=Botan::byte,
            _Alloc=Botan::secure_allocator<Botan::byte>
        ]
c:\Botan\include\botan-1.11\botan/rng.h(43): note: see reference to class template instantiation 'std::vector<Botan::byte,Botan::secure_allocator<Botan::byte>>' being compiled
NMAKE : fatal error U1077: 'C:\PROGRA~1\MICROS~3.0\VC\bin\cl.exe' : return code '0x2'
Stop.
NMAKE : fatal error U1077: '"C:\Program Files\Microsoft Visual Studio 14.0\VC\BIN\nmake.exe"' : return code '0x2'
Stop.
NMAKE : fatal error U1077: '"C:\Program Files\Microsoft Visual Studio 14.0\VC\BIN\nmake.exe"' : return code '0x2'
Stop.

Since I was able to compile and run the botan tests, I have the feeling that I missed something, but I have no idea what. Does anyone has any experience with this? (BTW: The same code compiles nicely with g++ 4.9)