Update references to closed issue

Issue rust-lang#28979 was closed with a link to rust-lang#55467.

src/doc/unstable-book/src/language-features/non-ascii-idents.md

@@ -1,8 +1,8 @@
 # `non_ascii_idents`
 
-The tracking issue for this feature is: [#28979]
+The tracking issue for this feature is: [#55467]
 
-[#28979]: https://github.com/rust-lang/rust/issues/28979
+[#55467]: https://github.com/rust-lang/rust/issues/55467
 
 ------------------------
 

src/libsyntax/feature_gate.rs

@@ -111,7 +111,7 @@ declare_features! (
     (active, concat_idents, "1.0.0", Some(29599), None),
     (active, link_args, "1.0.0", Some(29596), None),
     (active, log_syntax, "1.0.0", Some(29598), None),
-    (active, non_ascii_idents, "1.0.0", Some(28979), None),
+    (active, non_ascii_idents, "1.0.0", Some(55467), None),
     (active, plugin_registrar, "1.0.0", Some(29597), None),
     (active, thread_local, "1.0.0", Some(29594), None),
     (active, trace_macros, "1.0.0", Some(29598), None),

src/test/ui/feature-gates/feature-gate-non_ascii_idents.stderr

@@ -1,100 +1,100 @@
-error[E0658]: non-ascii idents are not fully supported. (see issue #28979)
+error[E0658]: non-ascii idents are not fully supported. (see issue #55467)
   --> $DIR/feature-gate-non_ascii_idents.rs:1:22
    |
 LL | extern crate core as bäz; //~ ERROR non-ascii idents
    |                      ^^^
    |
    = help: add #![feature(non_ascii_idents)] to the crate attributes to enable
 
-error[E0658]: non-ascii idents are not fully supported. (see issue #28979)
+error[E0658]: non-ascii idents are not fully supported. (see issue #55467)
   --> $DIR/feature-gate-non_ascii_idents.rs:3:5
    |
 LL | use föö::bar; //~ ERROR non-ascii idents
    |     ^^^
    |
    = help: add #![feature(non_ascii_idents)] to the crate attributes to enable
 
-error[E0658]: non-ascii idents are not fully supported. (see issue #28979)
+error[E0658]: non-ascii idents are not fully supported. (see issue #55467)
   --> $DIR/feature-gate-non_ascii_idents.rs:5:5
    |
 LL | mod föö { //~ ERROR non-ascii idents
    |     ^^^
    |
    = help: add #![feature(non_ascii_idents)] to the crate attributes to enable
 
-error[E0658]: non-ascii idents are not fully supported. (see issue #28979)
+error[E0658]: non-ascii idents are not fully supported. (see issue #55467)
   --> $DIR/feature-gate-non_ascii_idents.rs:9:4
    |
 LL | fn bär( //~ ERROR non-ascii idents
    |    ^^^
    |
    = help: add #![feature(non_ascii_idents)] to the crate attributes to enable
 
-error[E0658]: non-ascii idents are not fully supported. (see issue #28979)
+error[E0658]: non-ascii idents are not fully supported. (see issue #55467)
   --> $DIR/feature-gate-non_ascii_idents.rs:10:5
    |
 LL |     bäz: isize //~ ERROR non-ascii idents
    |     ^^^
    |
    = help: add #![feature(non_ascii_idents)] to the crate attributes to enable
 
-error[E0658]: non-ascii idents are not fully supported. (see issue #28979)
+error[E0658]: non-ascii idents are not fully supported. (see issue #55467)
   --> $DIR/feature-gate-non_ascii_idents.rs:12:9
    |
 LL |     let _ö: isize; //~ ERROR non-ascii idents
    |         ^^
    |
    = help: add #![feature(non_ascii_idents)] to the crate attributes to enable
 
-error[E0658]: non-ascii idents are not fully supported. (see issue #28979)
+error[E0658]: non-ascii idents are not fully supported. (see issue #55467)
   --> $DIR/feature-gate-non_ascii_idents.rs:15:10
    |
 LL |         (_ä, _) => {} //~ ERROR non-ascii idents
    |          ^^
    |
    = help: add #![feature(non_ascii_idents)] to the crate attributes to enable
 
-error[E0658]: non-ascii idents are not fully supported. (see issue #28979)
+error[E0658]: non-ascii idents are not fully supported. (see issue #55467)
   --> $DIR/feature-gate-non_ascii_idents.rs:19:8
    |
 LL | struct Föö { //~ ERROR non-ascii idents
    |        ^^^
    |
    = help: add #![feature(non_ascii_idents)] to the crate attributes to enable
 
-error[E0658]: non-ascii idents are not fully supported. (see issue #28979)
+error[E0658]: non-ascii idents are not fully supported. (see issue #55467)
   --> $DIR/feature-gate-non_ascii_idents.rs:20:5
    |
 LL |     föö: isize //~ ERROR non-ascii idents
    |     ^^^
    |
    = help: add #![feature(non_ascii_idents)] to the crate attributes to enable
 
-error[E0658]: non-ascii idents are not fully supported. (see issue #28979)
+error[E0658]: non-ascii idents are not fully supported. (see issue #55467)
   --> $DIR/feature-gate-non_ascii_idents.rs:23:6
    |
 LL | enum Bär { //~ ERROR non-ascii idents
    |      ^^^
    |
    = help: add #![feature(non_ascii_idents)] to the crate attributes to enable
 
-error[E0658]: non-ascii idents are not fully supported. (see issue #28979)
+error[E0658]: non-ascii idents are not fully supported. (see issue #55467)
   --> $DIR/feature-gate-non_ascii_idents.rs:24:5
    |
 LL |     Bäz { //~ ERROR non-ascii idents
    |     ^^^
    |
    = help: add #![feature(non_ascii_idents)] to the crate attributes to enable
 
-error[E0658]: non-ascii idents are not fully supported. (see issue #28979)
+error[E0658]: non-ascii idents are not fully supported. (see issue #55467)
   --> $DIR/feature-gate-non_ascii_idents.rs:25:9
    |
 LL |         qüx: isize //~ ERROR non-ascii idents
    |         ^^^
    |
    = help: add #![feature(non_ascii_idents)] to the crate attributes to enable
 
-error[E0658]: non-ascii idents are not fully supported. (see issue #28979)
+error[E0658]: non-ascii idents are not fully supported. (see issue #55467)
   --> $DIR/feature-gate-non_ascii_idents.rs:30:8
    |
 LL |     fn qüx();  //~ ERROR non-ascii idents

src/test/ui/imports/local-modularized-tricky-fail-2.stderr

@@ -1,4 +1,4 @@
-error[E0658]: non-ascii idents are not fully supported. (see issue #28979)
+error[E0658]: non-ascii idents are not fully supported. (see issue #55467)
   --> $DIR/local-modularized-tricky-fail-2.rs:20:32
    |
 LL | exported!();
@@ -9,7 +9,7 @@ LL |                 () => ( struct Б; ) //~ ERROR non-ascii idents are not ful
    |
    = help: add #![feature(non_ascii_idents)] to the crate attributes to enable
 
-error[E0658]: non-ascii idents are not fully supported. (see issue #28979)
+error[E0658]: non-ascii idents are not fully supported. (see issue #55467)
   --> $DIR/local-modularized-tricky-fail-2.rs:36:24
    |
 LL |     panic!();
@@ -20,7 +20,7 @@ LL |         () => ( struct Г; ) //~ ERROR non-ascii idents are not fully suppo
    |
    = help: add #![feature(non_ascii_idents)] to the crate attributes to enable
 
-error[E0658]: non-ascii idents are not fully supported. (see issue #28979)
+error[E0658]: non-ascii idents are not fully supported. (see issue #55467)
   --> $DIR/local-modularized-tricky-fail-2.rs:46:24
    |
 LL | include!();

src/test/ui/utf8_idents.stderr

@@ -1,28 +1,28 @@
-error[E0658]: non-ascii idents are not fully supported. (see issue #28979)
+error[E0658]: non-ascii idents are not fully supported. (see issue #55467)
   --> $DIR/utf8_idents.rs:4:5
    |
 LL |     'β, //~ ERROR non-ascii idents are not fully supported
    |     ^^
    |
    = help: add #![feature(non_ascii_idents)] to the crate attributes to enable
 
-error[E0658]: non-ascii idents are not fully supported. (see issue #28979)
+error[E0658]: non-ascii idents are not fully supported. (see issue #55467)
   --> $DIR/utf8_idents.rs:5:5
    |
 LL |     γ  //~ ERROR non-ascii idents are not fully supported
    |     ^
    |
    = help: add #![feature(non_ascii_idents)] to the crate attributes to enable
 
-error[E0658]: non-ascii idents are not fully supported. (see issue #28979)
+error[E0658]: non-ascii idents are not fully supported. (see issue #55467)
   --> $DIR/utf8_idents.rs:9:5
    |
 LL |     δ: usize //~ ERROR non-ascii idents are not fully supported
    |     ^
    |
    = help: add #![feature(non_ascii_idents)] to the crate attributes to enable
 
-error[E0658]: non-ascii idents are not fully supported. (see issue #28979)
+error[E0658]: non-ascii idents are not fully supported. (see issue #55467)
   --> $DIR/utf8_idents.rs:13:9
    |
 LL |     let α = 0.00001f64; //~ ERROR non-ascii idents are not fully supported