Heroku: Error encountered while saving cache

Question

Everything works fine locally, but when pushing to Heroku:

   Warning. Error encountered while saving cache /tmp/build_1b5c442a-d24e-4f80-9755-a0bd15d7f029/t         


        

Answer 1

This is related to the recent upgrade of the sass gem to 3.3.0. The sass gem is a dependency of a couple of other sass gems, so even if you don't have it in your Gemfile, it is probably getting loaded. Do a "bundle show" locally and on Heroku and I'm fairly sure you'll see they are different versions (sass was upgraded to 3.3.0 just a couple days ago).

Add:

gem 'sass', '3.2.13'

to your Gemfile and that should fix things for you. Then go submit an issue on github for this gem.

Hope this helps, it worked for me!