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 "<string>", line 1, in <module>
ModuleNotFoundError: No module named 'numpy'
In file included from /home/conan/w/cci_PR-3465/.conan/data/opencv/3.4.12/_/_/build/7ef2470f4b873b001a821bfc79f0861a34ecaeb7/source_subfolder/modules/imgcodecs/src/loadsave.cpp:47:
In file included from /home/conan/w/cci_PR-3465/.conan/data/opencv/3.4.12/_/_/build/7ef2470f4b873b001a821bfc79f0861a34ecaeb7/source_subfolder/modules/imgcodecs/src/grfmts.hpp:53:
In file included from /home/conan/w/cci_PR-3465/.conan/data/opencv/3.4.12/_/_/build/7ef2470f4b873b001a821bfc79f0861a34ecaeb7/source_subfolder/modules/imgcodecs/src/grfmt_exr.hpp:53:
In file included from /home/conan/w/cci_PR-3465/.conan/data/openexr/2.5.2/_/_/package/05f5d08d5c3b79268cffb98f4af531e047b775b4/include/OpenEXR/ImfInputFile.h:48:
In file included from /home/conan/w/cci_PR-3465/.conan/data/openexr/2.5.2/_/_/package/05f5d08d5c3b79268cffb98f4af531e047b775b4/include/OpenEXR/ImfTiledOutputFile.h:50:
In file included from /home/conan/w/cci_PR-3465/.conan/data/openexr/2.5.2/_/_/package/05f5d08d5c3b79268cffb98f4af531e047b775b4/include/OpenEXR/ImfGenericOutputFile.h:40:
In file included from /home/conan/w/cci_PR-3465/.conan/data/openexr/2.5.2/_/_/package/05f5d08d5c3b79268cffb98f4af531e047b775b4/include/OpenEXR/ImfXdr.h:108:
/home/conan/w/cci_PR-3465/.conan/data/openexr/2.5.2/_/_/package/05f5d08d5c3b79268cffb98f4af531e047b775b4/include/OpenEXR/half.h:104:19: error: expected ';' at end of declaration list
    half (half &&) noexcept = default;
                  ^
/home/conan/w/cci_PR-3465/.conan/data/openexr/2.5.2/_/_/package/05f5d08d5c3b79268cffb98f4af531e047b775b4/include/OpenEXR/half.h:125:35: error: expected ';' at end of declaration list
    half &              operator = (half  &&h) noexcept = default;
                                              ^
2 errors generated.
make[2]: *** [source_subfolder/modules/imgcodecs/CMakeFiles/opencv_imgcodecs.dir/src/loadsave.cpp.o] Error 1
make[1]: *** [source_subfolder/modules/imgcodecs/CMakeFiles/opencv_imgcodecs.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
make: *** [all] Error 2
opencv/3.4.12: WARN: Build folder is dirty, removing it: /home/conan/w/cci_PR-3465/.conan/data/opencv/3.4.12/_/_/build/7ef2470f4b873b001a821bfc79f0861a34ecaeb7
opencv/3.4.12: ERROR: Package '7ef2470f4b873b001a821bfc79f0861a34ecaeb7' build failed
opencv/3.4.12: WARN: Build folder /home/conan/w/cci_PR-3465/.conan/data/opencv/3.4.12/_/_/build/7ef2470f4b873b001a821bfc79f0861a34ecaeb7
ERROR: opencv/3.4.12: Error in build() method, line 192
	cmake.build()
	ConanException: Error 2 while executing cmake --build '/home/conan/w/cci_PR-3465/.conan/data/opencv/3.4.12/_/_/build/7ef2470f4b873b001a821bfc79f0861a34ecaeb7/build_subfolder' '--' '-j3'