feature.pm: note that "try" is experimental

...then regen

lib/feature.pm

@@ -417,6 +417,12 @@ bareword filehandles for older versions of perl.
 
 =head2 The 'try' feature.
 
+B<WARNING>: This feature is still experimental and the implementation may
+change or be removed in future versions of Perl.  For this reason, Perl will
+warn when you use the feature, unless you have explicitly disabled the warning:
+
+    no warnings "experimental::try";
+
 This feature enables the C<try> and C<catch> syntax, which allows exception
 handling, where exceptions throwin from the body of the block introduced with
 C<try> are caught by executing the body of the C<catch> block.

regen/feature.pl

@@ -823,6 +823,12 @@ =head2 The 'bareword_filehandles' feature.
 
 =head2 The 'try' feature.
 
+B<WARNING>: This feature is still experimental and the implementation may
+change or be removed in future versions of Perl.  For this reason, Perl will
+warn when you use the feature, unless you have explicitly disabled the warning:
+
+    no warnings "experimental::try";
+
 This feature enables the C<try> and C<catch> syntax, which allows exception
 handling, where exceptions throwin from the body of the block introduced with
 C<try> are caught by executing the body of the C<catch> block.