opencv/2.4.13.7: WARN: Build folder is dirty, removing it: /home/conan/w/cci_PR-2743/.conan/data/opencv/2.4.13.7/_/_/build/0d8879f8d2d816a66629c26c8f22acf5edc0d2c4 opencv/2.4.13.7: ERROR: Package '0d8879f8d2d816a66629c26c8f22acf5edc0d2c4' build failed opencv/2.4.13.7: WARN: Build folder /home/conan/w/cci_PR-2743/.conan/data/opencv/2.4.13.7/_/_/build/0d8879f8d2d816a66629c26c8f22acf5edc0d2c4 ERROR: opencv/2.4.13.7: Error in build() method, line 147 cmake.build() ConanException: Error 2 while executing cmake --build '/home/conan/w/cci_PR-2743/.conan/data/opencv/2.4.13.7/_/_/build/0d8879f8d2d816a66629c26c8f22acf5edc0d2c4/build_subfolder' '--' '-j3'