unary op filter, dereference hint

src/test/ui/binary-op-on-double-ref.stderr

@@ -4,8 +4,7 @@ error[E0369]: binary operation `%` cannot be applied to type `&&{integer}`
 LL |         x % 2 == 0
    |         ^^^^^
    |
-   = note: this is a reference to a type that `%` can be applied to; you need to dereference this variable once for this operation to work
-   = note: an implementation of `std::ops::Rem` might be missing for `&&{integer}`
+   = help: `%` can be used on '&{integer}', you can dereference `x`: `*x`
 
 error: aborting due to previous error
 

src/test/ui/codemap_tests/issue-28308.stderr

@@ -2,9 +2,7 @@ error[E0600]: cannot apply unary operator `!` to type `&'static str`
   --> $DIR/issue-28308.rs:12:5
    |
 LL |     assert!("foo");
-   |     ^^^^^^^^^^^^^^^
-   |
-   = note: an implementation of `std::ops::Not` might be missing for `&'static str`
+   |     ^^^^^^^^^^^^^^^ cannot apply unary operator `!`
 
 error: aborting due to previous error
 

src/test/ui/error-codes/E0600.stderr

@@ -2,9 +2,7 @@ error[E0600]: cannot apply unary operator `!` to type `&'static str`
   --> $DIR/E0600.rs:12:5
    |
 LL |     !"a"; //~ ERROR E0600
-   |     ^^^^
-   |
-   = note: an implementation of `std::ops::Not` might be missing for `&'static str`
+   |     ^^^^ cannot apply unary operator `!`
 
 error: aborting due to previous error
 

src/test/ui/error-festival.stderr

@@ -30,7 +30,7 @@ error[E0600]: cannot apply unary operator `!` to type `Question`
   --> $DIR/error-festival.rs:29:5
    |
 LL |     !Question::Yes;
-   |     ^^^^^^^^^^^^^^
+   |     ^^^^^^^^^^^^^^ cannot apply unary operator `!`
    |
    = note: an implementation of `std::ops::Not` might be missing for `Question`
 

src/test/ui/feature-gate-negate-unsigned.stderr

@@ -2,17 +2,17 @@ error[E0600]: cannot apply unary operator `-` to type `usize`
   --> $DIR/feature-gate-negate-unsigned.rs:20:23
    |
 LL |     let _max: usize = -1;
-   |                       ^^
+   |                       ^^ cannot apply unary operator `-`
    |
-   = note: an implementation of `std::ops::Neg` might be missing for `usize`
+   = note: unsigned values cannot be negated
 
 error[E0600]: cannot apply unary operator `-` to type `u8`
   --> $DIR/feature-gate-negate-unsigned.rs:24:14
    |
 LL |     let _y = -x;
-   |              ^^
+   |              ^^ cannot apply unary operator `-`
    |
-   = note: an implementation of `std::ops::Neg` might be missing for `u8`
+   = note: unsigned values cannot be negated
 
 error: aborting due to 2 previous errors
 

src/test/ui/issue-5239-1.stderr

@@ -6,7 +6,7 @@ LL |     let x = |ref x: isize| { x += 1; };
    |                              |
    |                              cannot use `+=` on type `&isize`
    |
-   = note: an implementation of `std::ops::AddAssign` might be missing for `&isize`
+   = help: `+=` can be used on 'isize', you can dereference `x`: `*x`
 
 error: aborting due to previous error
 

src/test/ui/reachable/expr_unary.stderr

@@ -2,9 +2,7 @@ error[E0600]: cannot apply unary operator `!` to type `!`
   --> $DIR/expr_unary.rs:17:16
    |
 LL |     let x: ! = ! { return; }; //~ ERROR unreachable
-   |                ^^^^^^^^^^^^^
-   |
-   = note: an implementation of `std::ops::Not` might be missing for `!`
+   |                ^^^^^^^^^^^^^ cannot apply unary operator `!`
 
 error: unreachable expression
   --> $DIR/expr_unary.rs:17:16