Add some guard code for places where sys.stdout and stderr are replaced with some other incompatible object

speedtest.py

@@ -165,8 +165,14 @@ except ImportError:
             self.flush()
 
     _py3_print = getattr(builtins, 'print')
+    try:
         _py3_utf8_stdout = _Py3Utf8Output(sys.stdout)
         _py3_utf8_stderr = _Py3Utf8Output(sys.stderr)
+    except OSError:
+        # sys.stdout/sys.stderr is not a compatible stdout/stderr object
+        # just use it and hope things go ok
+        _py3_utf8_stdout = sys.stdout
+        _py3_utf8_stderr = sys.stderr
 
     def to_utf8(v):
         """No-op encode to utf-8 for py3"""