1 files changed, 11 insertions, 11 deletions
diff --git a/setuptools/command/register.py b/setuptools/command/register.py
index 98bc0156..b8266b9a 100644
--- a/setuptools/command/register.py
+++ b/setuptools/command/register.py
@@ -1,18 +1,18 @@
 from distutils import log
 import distutils.command.register as orig
 
+from setuptools.errors import RemovedCommandError
+
 
 class register(orig.register):
-    __doc__ = orig.register.__doc__
+    """Formerly used to register packages on PyPI."""
 
     def run(self):
-        try:
-            # Make sure that we are using valid current name/version info
-            self.run_command('egg_info')
-            orig.register.run(self)
-        finally:
-            self.announce(
-                "WARNING: Registering is deprecated, use twine to "
-                "upload instead (https://pypi.org/p/twine/)",
-                log.WARN
-            )
+        msg = (
+            "The register command has been removed, use twine to upload "
+            + "instead (https://pypi.org/p/twine)"
+        )
+
+        self.announce("ERROR: " + msg, log.ERROR)
+
+        raise RemovedCommandError(msg)