fix llvm version parsed from json (rust-lang#952)

Author: tgymnich

enzyme/test/upload-results.py

@@ -29,7 +29,7 @@ def extract_results(json):
     githash = get_git_revision_hash()
     time = get_git_revision_date().isoformat()
     arch = platform.platform()
-    llvm = ".".join(str(json["__version__"]))
+    llvm = ".".join(map(lambda x: str(x), json["__version__"]))
 
     for test in json["tests"]:
         if test["code"] == "PASS":