bpo-34421 Fix unicode error on Windows

Lib/distutils/log.py

@@ -31,7 +31,10 @@ def _log(self, level, msg, args):
                 # emulate backslashreplace error handler
                 encoding = stream.encoding
                 msg = msg.encode(encoding, "backslashreplace").decode(encoding)
-            stream.write('%s\n' % msg)
+            try:
+                stream.write('%s\n' % msg)
+            except UnicodeEncodeError:
+                stream.write('%s\n' % msg.encode('unicode-escape').decode('ascii'))
             stream.flush()
 
     def log(self, level, msg, *args):

Misc/NEWS.d/next/Windows/Misc/NEWS.d/next/Windows/2018-09-07-10-57-00.bpo-34421.AKJISD.rst

@@ -0,0 +1,2 @@
+Fixed installation issue with setuptools setuptools that crashed with 
+packages containing unicode module or package names in Windows.