More than 1 year has passed since last update.
% 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
% brew doctor Your system is ready to brew. $ brew update Updated Homebrew from XXXXXXXX to XXXXXXXX. ==> Updated Formulae