If we crash while making a Python summary, the crash info will tell us more about it

git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@175915 91177308-0d34-0410-b5e6-96231b3b80d8
Mark last known Linux failure as XFAIL to see if there's any other problems with buildbots.



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@175917 91177308-0d34-0410-b5e6-96231b3b80d8