Wording tweak

src/test/ui/borrowck/borrowck-init-in-fru.stderr

@@ -1,4 +1,4 @@
-error[E0381]: used binding `origin.y` isn't initialized
+error[E0381]: used binding `origin` isn't initialized
   --> $DIR/borrowck-init-in-fru.rs:9:14
    |
 LL |     let mut origin: Point;

src/test/ui/borrowck/borrowck-partial-reinit-4.stderr

@@ -5,6 +5,8 @@ LL |     let mut x : (Test2, Test2);
    |         ----- binding declared here but left uninitialized
 LL |     (x.0).0 = Some(Test);
    |     ^^^^^^^ `x.0` assigned here but it isn't fully initialized
+   |
+   = help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
 
 error: aborting due to previous error
 

src/test/ui/borrowck/borrowck-uninit-field-access.stderr

@@ -1,4 +1,4 @@
-error[E0381]: used binding `a.x` isn't initialized
+error[E0381]: used binding `a` isn't initialized
   --> $DIR/borrowck-uninit-field-access.rs:21:13
    |
 LL |     let mut a: Point;

src/test/ui/borrowck/borrowck-uninit-ref-chain.stderr

@@ -1,4 +1,4 @@
-error[E0381]: used binding `**x` isn't initialized
+error[E0381]: used binding `x` isn't initialized
   --> $DIR/borrowck-uninit-ref-chain.rs:8:14
    |
 LL |     let x: &&Box<i32>;
@@ -6,7 +6,7 @@ LL |     let x: &&Box<i32>;
 LL |     let _y = &**x;
    |              ^^^^ `**x` used here but it isn't initialized
 
-error[E0381]: used binding `**x` isn't initialized
+error[E0381]: used binding `x` isn't initialized
   --> $DIR/borrowck-uninit-ref-chain.rs:11:14
    |
 LL |     let x: &&S<i32, i32>;
@@ -14,7 +14,7 @@ LL |     let x: &&S<i32, i32>;
 LL |     let _y = &**x;
    |              ^^^^ `**x` used here but it isn't initialized
 
-error[E0381]: used binding `**x` isn't initialized
+error[E0381]: used binding `x` isn't initialized
   --> $DIR/borrowck-uninit-ref-chain.rs:14:14
    |
 LL |     let x: &&i32;

src/test/ui/borrowck/borrowck-use-in-index-lvalue.stderr

@@ -1,4 +1,4 @@
-error[E0381]: used binding `*w` isn't initialized
+error[E0381]: used binding `w` isn't initialized
   --> $DIR/borrowck-use-in-index-lvalue.rs:3:5
    |
 LL |     let w: &mut [isize];
@@ -6,7 +6,7 @@ LL |     let w: &mut [isize];
 LL |     w[5] = 0;
    |     ^^^^ `*w` used here but it isn't initialized
 
-error[E0381]: used binding `*w` isn't initialized
+error[E0381]: used binding `w` isn't initialized
   --> $DIR/borrowck-use-in-index-lvalue.rs:6:5
    |
 LL |     let mut w: &mut [isize];

src/test/ui/borrowck/borrowck-use-uninitialized-in-cast-trait.stderr

@@ -1,4 +1,4 @@
-error[E0381]: used binding `*x` isn't initialized
+error[E0381]: used binding `x` isn't initialized
   --> $DIR/borrowck-use-uninitialized-in-cast-trait.rs:9:13
    |
 LL |     let x: &i32;

src/test/ui/borrowck/borrowck-use-uninitialized-in-cast.stderr

@@ -1,4 +1,4 @@
-error[E0381]: used binding `*x` isn't initialized
+error[E0381]: used binding `x` isn't initialized
   --> $DIR/borrowck-use-uninitialized-in-cast.rs:7:13
    |
 LL |     let x: &i32;

src/test/ui/const-generics/const-generic-default-wont-borrowck.stderr

@@ -1,4 +1,4 @@
-error[E0381]: used binding `*s` isn't initialized
+error[E0381]: used binding `s` isn't initialized
   --> $DIR/const-generic-default-wont-borrowck.rs:2:26
    |
 LL |     let s: &'static str; s.len()

src/test/ui/nll/issue-21232-partial-init-and-erroneous-use.stderr

@@ -5,6 +5,8 @@ LL |     let d: D;
    |         - binding declared here but left uninitialized
 LL |     d.x = 10;
    |     ^^^^^^^^ `d` assigned here but it isn't fully initialized
+   |
+   = help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
 
 error[E0381]: assigned binding `d` isn't fully initialized
   --> $DIR/issue-21232-partial-init-and-erroneous-use.rs:33:5
@@ -13,6 +15,8 @@ LL |     let mut d: D;
    |         ----- binding declared here but left uninitialized
 LL |     d.x = 10;
    |     ^^^^^^^^ `d` assigned here but it isn't fully initialized
+   |
+   = help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
 
 error[E0382]: assign of moved value: `d`
   --> $DIR/issue-21232-partial-init-and-erroneous-use.rs:39:5
@@ -24,7 +28,7 @@ LL |     drop(d);
 LL |     d.x = 10;
    |     ^^^^^^^^ value assigned here after move
 
-error[E0381]: partially assigned binding `d.s` isn't fully initialized
+error[E0381]: partially assigned binding `d` isn't fully initialized
   --> $DIR/issue-21232-partial-init-and-erroneous-use.rs:45:5
    |
 LL |     let d: D;
@@ -34,7 +38,7 @@ LL |     d.s.y = 20;
    |
    = help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
 
-error[E0381]: partially assigned binding `d.s` isn't fully initialized
+error[E0381]: partially assigned binding `d` isn't fully initialized
   --> $DIR/issue-21232-partial-init-and-erroneous-use.rs:50:5
    |
 LL |     let mut d: D;

src/test/ui/nll/issue-21232-partial-init-and-use.stderr

@@ -98,7 +98,7 @@ LL |     t.0 = 10;
    |
    = help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
 
-error[E0381]: partially assigned binding `q.r.f` isn't fully initialized
+error[E0381]: partially assigned binding `q` isn't fully initialized
   --> $DIR/issue-21232-partial-init-and-use.rs:170:5
    |
 LL |     let q: Q<S<B>>;
@@ -108,7 +108,7 @@ LL |     q.r.f.x = 10; q.r.f.y = Box::new(20);
    |
    = help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
 
-error[E0381]: partially assigned binding `q.r.f` isn't fully initialized
+error[E0381]: partially assigned binding `q` isn't fully initialized
   --> $DIR/issue-21232-partial-init-and-use.rs:176:5
    |
 LL |     let q: Q<T>;
@@ -138,7 +138,7 @@ LL |     q.r.f.0 = 10; q.r.f.1 = Box::new(20);
    |
    = note: move occurs because `q.r` has type `R<(u32, Box<u32>)>`, which does not implement the `Copy` trait
 
-error[E0381]: partially assigned binding `q.r.f` isn't fully initialized
+error[E0381]: partially assigned binding `q` isn't fully initialized
   --> $DIR/issue-21232-partial-init-and-use.rs:196:5
    |
 LL |     let q: Q<S<B>>;
@@ -148,7 +148,7 @@ LL |     q.r.f.x = 10;
    |
    = help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
 
-error[E0381]: partially assigned binding `q.r.f` isn't fully initialized
+error[E0381]: partially assigned binding `q` isn't fully initialized
   --> $DIR/issue-21232-partial-init-and-use.rs:202:5
    |
 LL |     let q: Q<T>;
@@ -178,7 +178,7 @@ LL |     q.r.f.0 = 10;
    |
    = note: move occurs because `q.r` has type `R<(u32, Box<u32>)>`, which does not implement the `Copy` trait
 
-error[E0381]: partially assigned binding `q.r.f` isn't fully initialized
+error[E0381]: partially assigned binding `q` isn't fully initialized
   --> $DIR/issue-21232-partial-init-and-use.rs:222:5
    |
 LL |     let mut q: Q<S<Void>>;
@@ -188,7 +188,7 @@ LL |     q.r.f.x = 10;
    |
    = help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
 
-error[E0381]: partially assigned binding `q.r.f` isn't fully initialized
+error[E0381]: partially assigned binding `q` isn't fully initialized
   --> $DIR/issue-21232-partial-init-and-use.rs:228:5
    |
 LL |     let mut q: Q<Tvoid>;