/usr/local/include/boost/icl/type_traits/type_to_string.hpp:56:12: error: partial specialization of ‘struct boost::icl::type_to_string<Unary >’ after instantiation of ‘struct boost::icl::type_to_string<std::basic_string >’ [-fpermissive]
struct type_to_string<Unary >
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/include/boost/icl/type_traits/type_to_string.hpp:72:12: error: partial specialization of ‘struct boost::icl::type_to_string<Binary<Type1, Type2> >’ after instantiation of ‘struct boost::icl::type_to_string<std::basic_string >’ [-fpermissive]
struct type_to_string<Binary<Type1, Type2> >