mattmanning/heroku-buildpack-ruby-jekyll — pull request #8 by ericroberts (2013-08-19 04:44:15+00:00)
Title: Use jekyll build command.

As of Jekyll 1.0, '--no-server' and '--no-auto' are no longer in use, and so this didn't work for me. I changed it to use jekyll build and that seems to have solved the problem.