Buildbot版本：(0.8.10)
Bug：TypeError: ‘NoneType‘ object has no attribute ‘__getitem__‘
参考页面：http://trac.buildbot.net/ticket/3107?cversion=0&cnum_hist=3
修改文件slaves.py中出错部分的代码为
1 try: 2 max_builds = int(request.args.get(‘numbuilds‘, [‘10‘])[0]) 3 except (TypeError, ValueError): 4 max_builds = 10
TypeError: 'NoneType' object has no attribute '__getitem__'
原文：http://www.cnblogs.com/Thriving-Heart/p/4172892.html