opencv/4.1.2: WARN: Build folder is dirty, removing it: C:\J\w\cci_PR-4270@2\.conan\data\opencv\4.1.2\_\_\build\5c2d7c96cdc6da05cafce80e1ce79f39c3b64ec2
CMake Warning at source_subfolder/cmake/OpenCVDetectPython.cmake:81 (message):
  CMake's 'find_host_package(PythonInterp 2.7)' founds wrong Python version:

  PYTHON_EXECUTABLE=C:/Python36/python.exe

  PYTHON_VERSION_STRING=3.6.7

  Consider specify '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:582 (include)