'brew update' failed to build on 10.9.4

gistfile1.txt

Output from `brew config`

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HOMEBREW_VERSION: 0.9.5
ORIGIN: https://github.com/Homebrew/homebrew.git
HEAD: 7a0c1a9e8ab9ef0f5309ac30d0c6d58867f06588
HOMEBREW_PREFIX: /usr/local
HOMEBREW_CELLAR: /usr/local/Cellar
CPU: 8-core 64-bit ivybridge
OS X: 10.9.4-x86_64
Xcode: 5.1.1
Clang: 5.1 build 503
X11: 2.7.5 => /opt/X11
System Ruby: 2.0.0-451
Perl: /usr/bin/perl
Python: /usr/bin/python
Ruby: /usr/bin/ruby
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Output from `brew doctor`

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Please note that these warnings are just used to help the Homebrew maintainers
with debugging if you file an issue. If everything you use Homebrew for is
working fine: please don't worry and just ignore them. Thanks!

Warning: "config" scripts exist outside your system or Homebrew directories.
`./configure` scripts often look for *-config scripts to determine if
software packages are installed, and what additional flags to use when
compiling and linking.

Having additional scripts in your path can confuse software installed via
Homebrew if the config script overrides a system or Homebrew provided
script of the same name. We found the following "config" scripts:

    /Applications/MAMP/Library/bin/curl-config
    /Applications/MAMP/Library/bin/freetype-config
    /Applications/MAMP/Library/bin/libmcrypt-config
    /Applications/MAMP/Library/bin/libpng-config
    /Applications/MAMP/Library/bin/libpng16-config
    /Applications/MAMP/Library/bin/sablot-config
    /Applications/MAMP/Library/bin/xml2-config
    /Applications/MAMP/Library/bin/xslt-config
    /Applications/MAMP/Library/bin/yaz-config
    /opt/local/bin/freetype-config
    /opt/local/bin/libpng-config
    /opt/local/bin/libpng15-config
    /opt/local/bin/ncurses5-config
    /opt/local/bin/ncursesw5-config
    /opt/local/bin/python2-config
    /opt/local/bin/python2.6-config
    /opt/local/bin/python2.7-config
    /opt/local/bin/xml2-config

Warning: Your XQuartz (2.7.5) is outdated
Please install XQuartz 2.7.7:
  https://xquartz.macosforge.org

Warning: You have unlinked kegs in your Cellar
Leaving kegs unlinked can lead to build-trouble and cause brews that depend on
those kegs to fail to run properly once built. Run `brew link` on these:

    enscript
Error: wrong number of arguments (3 for 0..2)
Please report this bug:
    https://github.com/Homebrew/homebrew/wiki/troubleshooting
/usr/local/Library/Taps/josegonzalez-php/Formula/abstract-php.rb:12:in `initialize'
/usr/local/Library/Homebrew/formulary.rb:50:in `new'
/usr/local/Library/Homebrew/formulary.rb:50:in `get_formula'
/usr/local/Library/Homebrew/formulary.rb:198:in `factory'
/usr/local/Library/Homebrew/formula.rb:369:in `block in installed'
/usr/local/Library/Homebrew/formula.rb:367:in `map'
/usr/local/Library/Homebrew/formula.rb:367:in `installed'
/usr/local/Library/Homebrew/cmd/doctor.rb:904:in `check_missing_deps'
/usr/local/Library/Homebrew/cmd/doctor.rb:1145:in `block in doctor'
/usr/local/Library/Homebrew/cmd/doctor.rb:1144:in `each'
/usr/local/Library/Homebrew/cmd/doctor.rb:1144:in `doctor'
/usr/local/Library/brew.rb:131:in `<main>'
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