---

yaml
---
r: 179578
b: refs/heads/master
c: 1aedc45
h: refs/heads/master
v: v3

Author: Keegan McAllister

[refs]

@@ -1,5 +1,5 @@
 ---
-refs/heads/master: 93b642d9743edea728ef08b2d6fd17229caaad43
+refs/heads/master: 1aedc45f85fe9feb70971f9d0c743c4af550a080
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
 refs/heads/snap-stage3: 0ba9e1fa52627404a1e5b90f745f96a872a0c564
 refs/heads/try: ccf8fedf1cffcb8f6f3581d53d220039e192fe77

trunk/src/librustc/plugin/load.rs

@@ -139,6 +139,9 @@ impl<'a, 'v> Visitor<'v> for PluginLoader<'a> {
                 }
                 "plugin" => {
                     self.sess.span_err(attr.span, "#[plugin] on `extern crate` is deprecated");
+                    self.sess.span_help(attr.span, &format!("use a crate attribute instead, \
+                                                            i.e. #![plugin({})]",
+                                                            item.ident.as_str())[]);
                 }
                 "macro_use" => {
                     let names = attr.meta_item_list();

trunk/src/test/compile-fail/plugin-extern-crate-attr-deprecated.rs

@@ -9,6 +9,7 @@
 // except according to those terms.
 
 #[plugin]  //~ ERROR #[plugin] on `extern crate` is deprecated
+//~^ HELP use a crate attribute instead, i.e. #![plugin(std)]
 extern crate std;
 
 fn main() {}