static assertion failed: constraint not satisfied

invalid new-expression of abstract class type ‘tests::InMemoryAccountRepository’

no matching function for call to ‘boost::ext::di::v1_3_0::extension::detail::injector<boost::ext::di::v1_3_0::extension::assert_error_policy, boost::ext::di::v1_3_0::extension::shared_config>::make<boost::ext::di::v1_3_0::core::dependency<boost::ext::di::v1_3_0::scopes::singleton, AccountRepository, tests::InMemoryAccountRepository, boost::ext::di::v1_3_0::no_name, void, boost::ext::di::v1_3_0::core::pool<boost::ext::di::v1_3_0::aux::type_list<> > >::given>(const boost::ext::di::v1_3_0::core::dependency<boost::ext::di::v1_3_0::scopes::singleton, AccountRepository, tests::InMemoryAccountRepository, boost::ext::di::v1_3_0::no_name, void, boost::ext::di::v1_3_0::core::pool<boost::ext::di::v1_3_0::aux::type_list<> > >&)’

‘const class boost::ext::di::v1_3_0::core::dependency<boost::ext::di::v1_3_0::scopes::singleton, AccountRepository, tests::InMemoryAccountRepository, boost::ext::di::v1_3_0::no_name, void, boost::ext::di::v1_3_0::core::pool<boost::ext::di::v1_3_0::aux::type_list<> > >’ has no member named ‘object_’

invalid new-expression of abstract class type ‘tests::InMemoryAccountRepository’

no match for ‘operator=’ (operand types are ‘std::unordered_map<std::type_index, std::function<void*()> >::mapped_type’ {aka ‘std::function<void*()>’} and ‘boost::ext::di::v1_3_0::extension::detail::injector<boost::ext::di::v1_3_0::extension::assert_error_policy, boost::ext::di::v1_3_0::extension::shared_config>::install<boost::ext::di::v1_3_0::core::dependency<boost::ext::di::v1_3_0::scopes::singleton, AccountRepository, tests::InMemoryAccountRepository, boost::ext::di::v1_3_0::no_name, void, boost::ext::di::v1_3_0::core::pool<boost::ext::di::v1_3_0::aux::type_list<> > > >(const boost::ext::di::v1_3_0::core::dependency<boost::ext::di::v1_3_0::scopes::singleton, AccountRepository, tests::InMemoryAccountRepository, boost::ext::di::v1_3_0::no_name, void, boost::ext::di::v1_3_0::core::pool<boost::ext::di::v1_3_0::aux::type_list<> > >&)::<lambda()>’)

no type named ‘type’ in ‘struct std::enable_if<false, std::function<void*()>&>’