Environment: APPVEYOR_BUILD_WORKER_IMAGE=Visual Studio 2015, BUILD_SYSTEM=CMake, PRJ_GEN=MSYS Makefiles, PRJ_CFG=Debug, OPENSSL=OFF, SCHANNEL=OFF, ENABLE_UNICODE=OFF, HTTP_ONLY=OFF, TESTING=ON, SHARED=OFF, DISABLED_TESTS=!1139 !1501, COMPILER_PATH=C:\MinGW\bin, MSYS2_ARG_CONV_EXCL=/*, BUILD_OPT=-k