After a new post is merged, I received an email from github:
The page build completed successfully, but returned the following warning for the master branch:
You are attempting to use the 'pygments' highlighter, which is currently unsupported on GitHub Pages. Your site will use 'rouge' for highlighting instead. To suppress this warning, change the 'highlighter' value to 'rouge' in your '_config.yml' and ensure the 'pygments' key is unset. For more information, see https://help.github.com/articles/page-build-failed-config-file-error/#fixing-highlighting-errors.
After a new post is merged, I received an email from github:
According to https://help.github.com/articles/page-build-failed-config-file-error/#fixing-highlighting-errors, the parameter
highlighter
can only be set torouge
.