CMake Warning at source_subfolder/cmake/OpenCVDetectPython.cmake:81 (message):
  CMake's 'find_host_package(PythonInterp 2.7)' founds wrong Python version:

  PYTHON_EXECUTABLE=/opt/pyenv/versions/3.7.5/bin/python

  PYTHON_VERSION_STRING=3.7.5

  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)


Traceback (most recent call last):
  File "<string>", line 1, in <module>
ModuleNotFoundError: No module named 'numpy'
CMake Error at source_subfolder/cmake/OpenCVCompilerOptimizations.cmake:617 (message):
  Compiler doesn't support optimization flags for FP16 dispatch mode: -mssse3
  -msse4.1 -mpopcnt -msse4.2 -mf16c -mavx
Call Stack (most recent call first):
  source_subfolder/cmake/OpenCVCompilerOptions.cmake:290 (ocv_compiler_optimization_options)
  source_subfolder/CMakeLists.txt:585 (include)


Terminated
opencv/4.1.2: WARN: Build folder is dirty, removing it: /home/conan/w/cci_PR-4270/.conan/data/opencv/4.1.2/_/_/build/79b61f4af7935a99624ad045cd4d066d81226318
opencv/4.1.2: ERROR: Package '79b61f4af7935a99624ad045cd4d066d81226318' build failed
opencv/4.1.2: WARN: Build folder /home/conan/w/cci_PR-4270/.conan/data/opencv/4.1.2/_/_/build/79b61f4af7935a99624ad045cd4d066d81226318
ERROR: Exiting with code: 5