title: "Warning. Error encountered while saving cache ... can't dump anonymous class" Update?
body: <p>Has anyone been able to squelch these warnings, while the sprockets-rails/sass-rails folks iron out the issue? I'm dealing with super-slow compiling times in development. I know that they're not actually harmful, but they're driving me nuts. </p>
  
  <p>I'm using Rails (4.1.6), the 5.0Beta of sass-rails, and the newest sprockets-rails (2.2.0) gem that works with my setup (3.0Beta doesn't work yet). </p>
  
  <p>I know I can downgrade to Sass 3.2 but I have sprinkled Susy 2 all over my site and want to keep it that way if possible. </p>
  
  <p>Thanks.</p>