sympy/sympy — pull request #7946 by pbrady (2014-09-01 04:40:48+00:00)
Title: update fastcache to most recent version in travis tests

The most recent version (0.4.3) fixes the bug which resulted in a `stack overflow` instead of a `RuntimeError` when reaching the maximum recursion limit. See #7918 and this [fastcache PR] (https://github.com/pbrady/fastcache/pull/21) for the discussion.