在OSX上Go安装期间出现Ld错误

I try to build Go 1.2 from source but can't get it to work anymore. It worked yesterday but now ld always fails. I tried to reinstall Xcode command line tools. This is my Terminal output:

$ hg update go1.2
$ cd src
$ ./all.bash
# Building C bootstrap tool.
cmd/dist
ld: can't write output file: cmd/dist/dist for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

I am running OSX 10.9.1.

What could have happened that this error shows? (It worked yesterday, I just played around with homebrew)

What else can I do BESIDES reinstalling OSX?

Thanks to the comment of Volker I reapplied the correct permissions to the go folder. I didn't finde a specific folder that had the false permissions but resetting them for the whole go folder fixed it.

I did not think this would be an issue because I installed go in my home folder.