I'm getting lots of "No 'operator ' matches arguments of type 'std::vector<XY>' and 'int'" errors, and by lots I mean this many in just one source file:
This happens with all std::vectors (regardless of data type) and any arguments to the  operator, including literals. Needless to say, the code compiles fine.
ReSharper Ultimate 2020.1.3 built on 2020-05-15 running in VS 2015 (14.0.25431.1)
Could it be because of the old VS version?
I've seen a similar issue in the issue tracker, but that was Linux and with some other container type (unordered_map I think).