Rollup merge of rust-lang#55799 - pnkfelix:remove-useless-revisions-m…

…arker-from-lint-unused-mut-variables, r=davidtwco

Removed unneeded instance of `// revisions` from a lint test

Removed an unneeded instance of `// revisions`; the compare-mode=nll shows the output is identical now.

cc rust-lang#54528

src/test/ui/lint/lint-unused-mut-variables.rs

@@ -8,8 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-// revisions: lexical nll
-#![cfg_attr(nll, feature(nll))]
+
+
 
 // Exercise the unused_mut attribute in some positive and negative cases
 
@@ -21,68 +21,68 @@
 
 fn main() {
     // negative cases
-    let mut a = 3; //[lexical]~ ERROR: variable does not need to be mutable
-                   //[nll]~^ ERROR: variable does not need to be mutable
-    let mut a = 2; //[lexical]~ ERROR: variable does not need to be mutable
-                   //[nll]~^ ERROR: variable does not need to be mutable
-    let mut b = 3; //[lexical]~ ERROR: variable does not need to be mutable
-                   //[nll]~^ ERROR: variable does not need to be mutable
-    let mut a = vec![3]; //[lexical]~ ERROR: variable does not need to be mutable
-                         //[nll]~^ ERROR: variable does not need to be mutable
-    let (mut a, b) = (1, 2); //[lexical]~ ERROR: variable does not need to be mutable
-                             //[nll]~^ ERROR: variable does not need to be mutable
-    let mut a; //[lexical]~ ERROR: variable does not need to be mutable
-               //[nll]~^ ERROR: variable does not need to be mutable
+    let mut a = 3; //~ ERROR: variable does not need to be mutable
+
+    let mut a = 2; //~ ERROR: variable does not need to be mutable
+
+    let mut b = 3; //~ ERROR: variable does not need to be mutable
+
+    let mut a = vec![3]; //~ ERROR: variable does not need to be mutable
+
+    let (mut a, b) = (1, 2); //~ ERROR: variable does not need to be mutable
+
+    let mut a; //~ ERROR: variable does not need to be mutable
+
     a = 3;
 
-    let mut b; //[lexical]~ ERROR: variable does not need to be mutable
-               //[nll]~^ ERROR: variable does not need to be mutable
+    let mut b; //~ ERROR: variable does not need to be mutable
+
     if true {
         b = 3;
     } else {
         b = 4;
     }
 
     match 30 {
-        mut x => {} //[lexical]~ ERROR: variable does not need to be mutable
-                    //[nll]~^ ERROR: variable does not need to be mutable
+        mut x => {} //~ ERROR: variable does not need to be mutable
+
     }
     match (30, 2) {
-      (mut x, 1) | //[lexical]~ ERROR: variable does not need to be mutable
-                   //[nll]~^ ERROR: variable does not need to be mutable
+      (mut x, 1) | //~ ERROR: variable does not need to be mutable
+
       (mut x, 2) |
       (mut x, 3) => {
       }
       _ => {}
     }
 
-    let x = |mut y: isize| 10; //[lexical]~ ERROR: variable does not need to be mutable
-                               //[nll]~^ ERROR: variable does not need to be mutable
-    fn what(mut foo: isize) {} //[lexical]~ ERROR: variable does not need to be mutable
-                               //[nll]~^ ERROR: variable does not need to be mutable
+    let x = |mut y: isize| 10; //~ ERROR: variable does not need to be mutable
+
+    fn what(mut foo: isize) {} //~ ERROR: variable does not need to be mutable
+
+
+    let mut a = &mut 5; //~ ERROR: variable does not need to be mutable
 
-    let mut a = &mut 5; //[lexical]~ ERROR: variable does not need to be mutable
-                        //[nll]~^ ERROR: variable does not need to be mutable
     *a = 4;
 
     let mut a = 5;
-    let mut b = (&mut a,); //[lexical]~ ERROR: variable does not need to be mutable
-    *b.0 = 4;              //[nll]~^ ERROR: variable does not need to be mutable
+    let mut b = (&mut a,); //~ ERROR: variable does not need to be mutable
+    *b.0 = 4;
+
+    let mut x = &mut 1; //~ ERROR: variable does not need to be mutable
 
-    let mut x = &mut 1; //[lexical]~ ERROR: variable does not need to be mutable
-                        //[nll]~^ ERROR: variable does not need to be mutable
     let mut f = || {
       *x += 1;
     };
     f();
 
     fn mut_ref_arg(mut arg : &mut [u8]) -> &mut [u8] {
-        &mut arg[..] //[lexical]~^ ERROR: variable does not need to be mutable
-                     //[nll]~^^ ERROR: variable does not need to be mutable
+        &mut arg[..] //~^ ERROR: variable does not need to be mutable
+
     }
 
-    let mut v : &mut Vec<()> = &mut vec![]; //[lexical]~ ERROR: variable does not need to be mutable
-                                            //[nll]~^ ERROR: variable does not need to be mutable
+    let mut v : &mut Vec<()> = &mut vec![]; //~ ERROR: variable does not need to be mutable
+
     v.push(());
 
     // positive cases
@@ -140,6 +140,6 @@ fn foo(mut a: isize) {
 fn bar() {
     #[allow(unused_mut)]
     let mut a = 3;
-    let mut b = vec![2]; //[lexical]~ ERROR: variable does not need to be mutable
-                         //[nll]~^ ERROR: variable does not need to be mutable
+    let mut b = vec![2]; //~ ERROR: variable does not need to be mutable
+
 }