Merge "Prepare for upgrade to Truth 0.42"
diff --git a/atest/atest_utils.py b/atest/atest_utils.py
index f237ae4..7925cac 100644
--- a/atest/atest_utils.py
+++ b/atest/atest_utils.py
@@ -94,7 +94,7 @@
         # Readline will often return empty strings.
         if not line:
             continue
-        full_output.append(line)
+        full_output.append(line.decode('utf-8'))
         # Trim the line to the width of the terminal.
         # Note: Does not handle terminal resizing, which is probably not worth
         #       checking the width every loop.