Fix stdout handling in jobset.py (#27493)

* Fix stdout handling in jobset.py

* Apparently ascii was a bad assumption

* Or how about this

* Just ignore non-utf8 characters

tools/run_tests/python_utils/jobset.py

@@ -357,7 +357,7 @@ class Job(object):
                 if measure_cpu_costs:
                     m = re.search(
                         r'real\s+([0-9.]+)\nuser\s+([0-9.]+)\nsys\s+([0-9.]+)',
-                        stdout())
+                        (stdout()).decode("utf8", errors="replace"))
                     real = float(m.group(1))
                     user = float(m.group(2))
                     sys = float(m.group(3))

tools/run_tests/python_utils/upload_test_results.py

@@ -88,7 +88,7 @@ def _get_build_metadata(test_results):
 def _insert_rows_with_retries(bq, bq_table, bq_rows):
     """Insert rows to bq table. Retry on error."""
     # BigQuery sometimes fails with large uploads, so batch 1,000 rows at a time.
-    for i in range((len(bq_rows) / 1000) + 1):
+    for i in range((len(bq_rows) // 1000) + 1):
         max_retries = 3
         for attempt in range(max_retries):
             if big_query_utils.insert_rows(bq, _PROJECT_ID, _DATASET_ID,