contains_test just won't work on VC6

[SVN r23206]

status/explicit-failures-markup.xml

@@ -201,6 +201,12 @@
         </mark-failure>
     </test>
 
+    <test name="contains_test">
+        <mark-failure>
+            <toolset name="msvc"/>
+        </mark-failure>
+    </test>
+
     <test name="function_arith_cxx98">
         <mark-failure>
             <toolset name="borland"/>