undefined to_sym bug in homebrew

terminal output

jag@coati:~$ brew update
Error: undefined method `to_sym' for nil:NilClass
Please report this bug:
    https://github.com/mxcl/homebrew/wiki/troubleshooting
/usr/local/Library/Homebrew/cmd/update.rb:134:in `report'
/usr/local/Library/Homebrew/cmd/update.rb:132:in `each_line'
/usr/local/Library/Homebrew/cmd/update.rb:132:in `report'
/usr/local/Library/Homebrew/cmd/update.rb:36:in `update'
/usr/local/Library/brew.rb:91:in `send'
/usr/local/Library/brew.rb:91
jag@coati:~$ brew doctor
Warning: Your XQuartz (2.7.4) is outdated
Please install XQuartz 2.7.5:
  https://xquartz.macosforge.org

###Installed new xquartz

jag@coati:~$ brew doctor
Your system is ready to brew.
jag@coati:~$ brew update
Updated Homebrew from 36ba8e68 to 36ba8e68.
==> Updated Formulae
homebrew/dupes/tidy			homebrew/versions/gcc49
homebrew/science/hdf5			homebrew/versions/gstreamer010
homebrew/science/minc			homebrew/versions/plowshare3
homebrew/science/moab			homebrew/versions/postgis20
homebrew/science/netcdf			homebrew/versions/ruby182
homebrew/versions/clojure14		homebrew/versions/ruby186
homebrew/versions/erlang-r14		samueljohn/python/numpy
homebrew/versions/erlang-r15		samueljohn/python/scipy
homebrew/versions/gcc45
jag@coati:~$ brew --config
HOMEBREW_VERSION: 0.9.5
ORIGIN: https://github.com/mxcl/homebrew.git
HEAD: 36ba8e6805c9d5a00dc4c33d28b5c2728dc673db
HOMEBREW_PREFIX: /usr/local
HOMEBREW_CELLAR: /usr/local/Cellar
CPU: quad-core 64-bit sandybridge
OS X: 10.8.5-x86_64
Xcode: 5.0.1
CLT: 5.0.1.0.1.1377666378
GCC-4.2: build 5666
LLVM-GCC: build 2336
Clang: 5.0 build 500
X11: 2.7.5 => /opt/X11
System Ruby: 1.8.7-358
Perl: /usr/bin/perl
Python: /usr/bin/python
Ruby: /Users/jag/.rbenv/shims/ruby
jag@coati:~$