CMake Warning at source_subfolder/cmake/OpenCVDetectPython.cmake:81 (message): CMake's 'find_host_package(PythonInterp 2.7)' found wrong Python version: PYTHON_EXECUTABLE=/opt/pyenv/versions/3.7.5/bin/python PYTHON_VERSION_STRING=3.7.5 Consider providing the 'PYTHON2_EXECUTABLE' variable via CMake command line or environment variables Call Stack (most recent call first): source_subfolder/cmake/OpenCVDetectPython.cmake:271 (find_python) source_subfolder/CMakeLists.txt:606 (include) Traceback (most recent call last): File "", line 1, in ModuleNotFoundError: No module named 'numpy' /usr/bin/ld: /home/conan/w/cci_PR-3465/.conan/data/jasper/2.0.16/_/_/package/49cc7ddb3f7c84b46940a255f275b97e113deadf/lib/libjasper.a(jas_stream.c.o): in function `jas_stream_tmpfile': jas_stream.c:(.text+0x8a7): warning: the use of `tmpnam' is dangerous, better use `mkstemp' CMake Warning: Manually-specified variables were not used by the project: CMAKE_EXPORT_NO_PACKAGE_REGISTRY /home/conan/w/cci_PR-3465/2/62c0d326-eef5-4107-8e7a-a48b13d880af/recipes/opencv/3.x/test_package/test_package.cpp:18:23: error: no member named 'insert' in 'cv::String' face_cascade_name.insert(0, res_folder); ~~~~~~~~~~~~~~~~~ ^ /home/conan/w/cci_PR-3465/2/62c0d326-eef5-4107-8e7a-a48b13d880af/recipes/opencv/3.x/test_package/test_package.cpp:19:23: error: no member named 'insert' in 'cv::String' eyes_cascade_name.insert(0, res_folder); ~~~~~~~~~~~~~~~~~ ^ 2 errors generated. make[2]: *** [CMakeFiles/test_package.dir/build.make:63: CMakeFiles/test_package.dir/test_package.cpp.o] Error 1 make[1]: *** [CMakeFiles/Makefile2:76: CMakeFiles/test_package.dir/all] Error 2 make: *** [Makefile:84: all] Error 2 ERROR: opencv/3.4.12 (test package): Error in build() method, line 12 cmake.build() ConanException: Error 2 while executing cmake --build '/home/conan/w/cci_PR-3465/2/62c0d326-eef5-4107-8e7a-a48b13d880af/recipes/opencv/3.x/test_package/build/ba269b98211b480dcb83c2f837c98577568295f3' '--' '-j3'