std::iterator is deprecated in C++17
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1>Unknown compiler version - please run the configure tests and report the results
1>c:\vc\vcpkg\installed\x86-windows\include\boost\operators.hpp(835): error C4996: 'std::iteratorstd::input_iterator_tag,V,D,P,R': warning STL4015: The std::iterator class template (used as a base class to provide typedefs) is deprecated in C++17. (The header is NOT deprecated.) The C++ Standard has never required user-defined iterators to derive from std::iterator. To fix this warning, stop deriving from std::iterator and start providing publicly accessible typedefs named iterator_category, value_type, difference_type, pointer, and reference. Note that value_type is required to be non-const, even for constant iterators. You can define _SILENCE_CXX17_ITERATOR_BASE_CLASS_DEPRECATION_WARNING or _SILENCE_ALL_CXX17_DEPRECATION_WARNINGS to acknowledge that you have received this warning.
MSVC 15.5.0 Preview
I replaces std::iterator with a manually rolled version. Please check if it fixes your problem.