rmdir of non-empty directory

[wsmoses]

I think probably related to previous issues, but when gg tries to remove the temporary directory created (presumably in

gg/src/util/temp_dir.cc

Line 30 in cbb81f9

CheckSystemCall( "rmdir " + name(), rmdir( name().c_str() ) );

) there's still temporaries left in the directory in an error condition.

[artemdinaburg]

I was about to file this same issue; I ran into this when failing to build LLVM's opt, which sounds exactly like what the original submitter was trying to do :).