3 files changed, 33 insertions, 2 deletions
diff --git a/infra/cifuzz/cifuzz.py b/infra/cifuzz/cifuzz.py
index 69e92a4c0..4a4c42a1c 100644
--- a/infra/cifuzz/cifuzz.py
+++ b/infra/cifuzz/cifuzz.py
@@ -427,8 +427,9 @@ def run_fuzzers(  # pylint: disable=too-many-arguments,too-many-locals
     if not testcase or not stacktrace:
       logging.info('Fuzzer %s, finished running.', target.target_name)
     else:
-      logging.info(b'Fuzzer %s, detected error: %s.', target.target_name,
-                   stacktrace)
+      utils.print(b'Fuzzer %s, detected error: %s.' % (
+          bytes(target.target_name, 'utf-8'),
+          stacktrace))
       shutil.move(testcase, os.path.join(artifacts_dir, 'test_case'))
       parse_fuzzer_output(stacktrace, artifacts_dir)
       return True, True
diff --git a/infra/utils.py b/infra/utils.py
index 1cde40114..0b35d7970 100644
--- a/infra/utils.py
+++ b/infra/utils.py
@@ -18,6 +18,7 @@ import os
 import re
 import stat
 import subprocess
+import sys
 
 import helper
 
@@ -127,3 +128,13 @@ def is_fuzz_target_local(file_path):
 
   with open(file_path, 'rb') as file_handle:
     return file_handle.read().find(FUZZ_TARGET_SEARCH_STRING.encode()) != -1
+
+
+def print(string):
+  """Print that can print a binary string."""
+  if isinstance(string, bytes):
+    string += b'\n'
+  else:
+    string += '\n'
+  sys.stdout.buffer.write(string)
+  sys.stdout.flush()
diff --git a/infra/utils_test.py b/infra/utils_test.py
index 0fc614f86..3f7885d93 100644
--- a/infra/utils_test.py
+++ b/infra/utils_test.py
@@ -16,6 +16,7 @@
 import os
 import tempfile
 import unittest
+from unittest import mock
 
 import utils
 import helper
@@ -110,5 +111,23 @@ class ExecuteTest(unittest.TestCase):
                                            check_result=True)
 
 
+class PrintTest(unittest.TestCase):
+  """Tests for utils.print."""
+
+  @mock.patch('sys.stdout.buffer.write')
+  def test_string(self, mocked_write):
+    """Tests that utils.print can print a regular string."""
+    # Should execute without raising any exceptions.
+    utils.print('hello')
+    mocked_write.assert_called_with('hello\n')
+
+
+  @mock.patch('sys.stdout.buffer.write')
+  def test_binary_string(self, mocked_write):
+    """Tests that utils.print can print a binary string."""
+    # Should execute without raising any exceptions.
+    utils.print(b'hello')
+    mocked_write.assert_called_with(b'hello\n')
+
 if __name__ == '__main__':
   unittest.main()