As the name say, and as you can see [here](https://github.com/TheAlgorithms/Python/runs/4106813490?check_suite_focus=true), the build failed because pip couldn't find a matching distribution for scikit-fuzzy. Edit: other examples can be found [here](https://github.com/TheAlgorithms/Python/runs/4107438933?check_suite_focus=true) and [here](https://github.com/TheAlgorithms/Python/runs/4102083542?check_suite_focus=true)