rebase: fix test output

Author: estebank

src/test/ui/borrowck/mut-borrow-of-mut-ref.stderr

@@ -11,8 +11,9 @@ LL | pub fn f(b: &mut i32) {
    |             ^^^^^^^^
 help: try removing `&mut` here
    |
-LL |     h(b);
-   |      --
+LL -     h(&mut b);
+LL +     h(b);
+   | 
 
 error[E0596]: cannot borrow `b` as mutable, as it is not declared as mutable
   --> $DIR/mut-borrow-of-mut-ref.rs:11:12
@@ -27,8 +28,9 @@ LL | pub fn f(b: &mut i32) {
    |             ^^^^^^^^
 help: try removing `&mut` here
    |
-LL |     g(&mut b);
-   |           --
+LL -     g(&mut &mut b);
+LL +     g(&mut b);
+   | 
 
 error[E0596]: cannot borrow `b` as mutable, as it is not declared as mutable
   --> $DIR/mut-borrow-of-mut-ref.rs:18:12
@@ -43,8 +45,9 @@ LL | pub fn g(b: &mut i32) {
    |             ^^^^^^^^
 help: try removing `&mut` here
    |
-LL |     h(&mut b);
-   |           --
+LL -     h(&mut &mut b);
+LL +     h(&mut b);
+   | 
 
 error[E0596]: cannot borrow `f` as mutable, as it is not declared as mutable
   --> $DIR/mut-borrow-of-mut-ref.rs:35:5
@@ -55,7 +58,7 @@ LL |     f.bar();
 help: consider making the binding mutable
    |
 LL | pub fn baz(mut f: &mut String) {
-   |            ^^^
+   |            +++
 
 error: aborting due to 4 previous errors
 

src/test/ui/did_you_mean/issue-34126.stderr

@@ -11,8 +11,9 @@ LL |     fn start(&mut self) {
    |              ^^^^^^^^^
 help: try removing `&mut` here
    |
-LL |         self.run(self);
-   |                 --
+LL -         self.run(&mut self);
+LL +         self.run(self);
+   | 
 
 error[E0502]: cannot borrow `self` as mutable because it is also borrowed as immutable
   --> $DIR/issue-34126.rs:6:18