homebrew - error in llvm34 and llvm35

gistfile1.txt

➜  ~  brew info llvm35      
llvm35: HEAD
http://llvm.org/
Not installed
From: https://github.com/homebrew/homebrew-versions/commits/master/llvm35.rb
==> Dependencies
Required: gmp ✔, isl ✔, cloog ✔
Recommended: libffi ✔
==> Options
--all-targets
	Build all target backends
--disable-assertions
	Speeds up LLVM, but provides less debug information
--disable-shared
	Don't build LLVM as a shared library
--rtti
	Build with C++ RTTI
--universal
	Build a universal binary
--with-asan
	Include support for -faddress-sanitizer (from compiler-rt)
--with-clang
	Build Clang C/ObjC/C++ frontend
--with-libcxx
	Build libc++ standard library support
--without-libffi
	Build without libffi support
--without-python
	Build without python support
--HEAD
	install HEAD version
Warning: Formula#python is deprecated and will go away shortly.
Warning: Formula#python is deprecated and will go away shortly.
Error: undefined method `standard_caveats' for #<PythonDependency: "python" []>
Please report this bug:
    https://github.com/Homebrew/homebrew/wiki/troubleshooting
/usr/local/Library/Formula/llvm35.rb:200:in `caveats'
/usr/local/Library/Homebrew/caveats.rb:10:in `caveats'
/usr/local/Library/Homebrew/caveats.rb:21:in `empty?'
/usr/local/Library/Homebrew/cmd/info.rb:136:in `info_formula'
/usr/local/Library/Homebrew/cmd/info.rb:36:in `print_info'
/usr/local/Library/Homebrew/cmd/info.rb:34:in `each'
/usr/local/Library/Homebrew/cmd/info.rb:34:in `print_info'
/usr/local/Library/Homebrew/cmd/info.rb:17:in `info'
/usr/local/Library/brew.rb:107:in `send'
/usr/local/Library/brew.rb:107