avoid caching erlang build folder because we do not use the cache anyway so it just wastes space. previous attempt caused errors. see https://github.com/HashNuke/heroku-buildpack-elixir/issues/183
avoid caching erlang build folder because we do not use the cache anyway so it just wastes space. previous attempt caused errors. see https://github.com/HashNuke/heroku-buildpack-elixir/issues/183

HashNuke/heroku-buildpack-elixir