Try installing mingw in appveyor.
Try installing mingw in appveyor.
cppformat/cppformat,lightslife/cppformat,wangshijin/cppformat,nelson4722/cppformat,lightslife/cppformat,cppformat/cppformat,blaquee/cppformat,blaquee/cppformat,alabuzhev/fmt,nelson4722/cppformat,lightslife/cppformat,seungrye/cppformat,dean0x7d/cppformat,mojoBrendan/fmt,cppformat/cppformat,alabuzhev/fmt,alabuzhev/fmt,wangshijin/cppformat,Jopie64/cppformat,Jopie64/cppformat,mojoBrendan/fmt,dean0x7d/cppformat,blaquee/cppformat,Jopie64/cppformat,mojoBrendan/fmt,dean0x7d/cppformat,seungrye/cppformat,nelson4722/cppformat,wangshijin/cppformat,seungrye/cppformat