When I remove the fails with

```
brew install ./go.rb
==> Downloading https://go.googlecode.com/files/go1.1.src.tar.gz
Already downloaded: /Library/Caches/Homebrew/go-1.1.tar.gz
==> ./make.bash --no-clean
runtime/cgo
# runtime/cgo
clang: warning: argument unused during compilation: '-pthread'
# runtime/cgo
clang: error: no such file or directory: 'libgcc.a'
```