diff -r d70e620ee8c9 -r 0f8ff3ff5d5c tests/run-tests.py
--- a/tests/run-tests.py	Sun Sep 30 05:52:42 2018 +0530
+++ b/tests/run-tests.py	Sat Sep 29 20:33:52 2018 -0400
@@ -1875,6 +1875,7 @@
                         'changes)')
                 else:
                     self.stream.write('Accept this change? [n] ')
+                    self.stream.flush()
                     answer = sys.stdin.readline().strip()
                     if answer.lower() in ('y', 'yes'):
                         if test.path.endswith(b'.t'):