ERROR: hazelcastcxx/4.0.0 (test package): Error in configure() method, line 11
	self.settings.compiler.libcxx="libstdc++11"
	ConanException: Invalid setting 'libstdc++11' is not a valid 'settings.compiler.libcxx' value.
Possible values are ['libc++', 'libstdc++']
Read "http://docs.conan.io/en/latest/faq/troubleshooting.html#error-invalid-setting"