From fa539766b8ce217fed1d617db2f17aca8cfcf20e Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Thu, 12 Apr 2018 19:56:35 +0200
Subject: [PATCH] Output outdated warning on stderr, fixes #7218

---
 src/Composer/Command/ShowCommand.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Composer/Command/ShowCommand.php b/src/Composer/Command/ShowCommand.php
index ae2307e5c..ec0261acc 100644
--- a/src/Composer/Command/ShowCommand.php
+++ b/src/Composer/Command/ShowCommand.php
@@ -467,7 +467,7 @@ EOT
                     }
                     $io->write('');
                     if (isset($package['warning'])) {
-                        $io->write('<warning>' . $package['warning'] . '</warning>');
+                        $io->writeError('<warning>' . $package['warning'] . '</warning>');
                     }
                 }