Rails - Mar 2014 - ActionView::Template::Error: end of file reached Rails 4.0.4

I have an application I'm migrating from Rails 3.2 to 4.0. On my CI 
environment, I'm getting "ActionView::Template::Error: end of file
reached"
randomly in different controller specs pointing to a view in which I have 
"javascript_include_tag 'application'". Has anyone seen this
before?
Relevant gems:

rails (4.0.4)
sprockets (2.11.0)
sprockets-rails (2.0.1)
sass-rails (4.0.2)
coffee-rails (4.0.1)

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