Update tests.

src/test/ui/issues/issue-11692-2.stderr

@@ -3,6 +3,8 @@ error: cannot find macro `test` in this scope
    |
 LL |     concat!(test!());
    |             ^^^^
+   |
+   = note: `test` is in scope, but it is an attribute
 
 error: aborting due to previous error
 

src/test/ui/macros/issue-88228.rs

@@ -13,6 +13,7 @@ struct A;
 
 #[derive(println)]
 //~^ ERROR cannot find derive macro `println`
+//~|`println` is in scope, but it is a function-like macro
 struct B;
 
 fn main() {

src/test/ui/macros/issue-88228.stderr

@@ -1,5 +1,5 @@
 error: cannot find macro `bla` in this scope
-  --> $DIR/issue-88228.rs:19:5
+  --> $DIR/issue-88228.rs:20:5
    |
 LL |     bla!();
    |     ^^^
@@ -12,6 +12,8 @@ error: cannot find derive macro `println` in this scope
    |
 LL | #[derive(println)]
    |          ^^^^^^^
+   |
+   = note: `println` is in scope, but it is a function-like macro
 
 error: cannot find derive macro `Bla` in this scope
   --> $DIR/issue-88228.rs:9:10

src/test/ui/macros/macro-path-prelude-fail-3.stderr

@@ -8,6 +8,8 @@ LL |     inline!();
    |
 LL |     macro_rules! line {
    |     ----------------- similarly named macro `line` defined here
+   |
+   = note: `inline` is in scope, but it is an attribute
 
 error: aborting due to previous error
 

src/test/ui/proc-macro/macro-namespace-reserved-2.stderr

@@ -93,30 +93,40 @@ error: cannot find macro `my_macro_attr` in this scope
    |
 LL |     my_macro_attr!();
    |     ^^^^^^^^^^^^^
+   |
+   = note: `my_macro_attr` is in scope, but it is an attribute
 
 error: cannot find macro `MyTrait` in this scope
   --> $DIR/macro-namespace-reserved-2.rs:33:5
    |
 LL |     MyTrait!();
    |     ^^^^^^^
+   |
+   = note: `MyTrait` is in scope, but it is a derive macro
 
 error: cannot find attribute `my_macro` in this scope
   --> $DIR/macro-namespace-reserved-2.rs:38:3
    |
 LL | #[my_macro]
    |   ^^^^^^^^
+   |
+   = note: `my_macro` is in scope, but it is a function-like macro
 
 error: cannot find derive macro `my_macro` in this scope
   --> $DIR/macro-namespace-reserved-2.rs:48:10
    |
 LL | #[derive(my_macro)]
    |          ^^^^^^^^
+   |
+   = note: `my_macro` is in scope, but it is a function-like macro
 
 error: cannot find derive macro `my_macro` in this scope
   --> $DIR/macro-namespace-reserved-2.rs:48:10
    |
 LL | #[derive(my_macro)]
    |          ^^^^^^^^
+   |
+   = note: `my_macro` is in scope, but it is a function-like macro
 
 error: aborting due to 20 previous errors
 

src/test/ui/tool-attributes/tool-attributes-misplaced-1.stderr

@@ -3,24 +3,32 @@ error: cannot find derive macro `rustfmt` in this scope
    |
 LL | #[derive(rustfmt)]
    |          ^^^^^^^
+   |
+   = note: `rustfmt` is in scope, but it is not a derive macro
 
 error: cannot find derive macro `rustfmt` in this scope
   --> $DIR/tool-attributes-misplaced-1.rs:4:10
    |
 LL | #[derive(rustfmt)]
    |          ^^^^^^^
+   |
+   = note: `rustfmt` is in scope, but it is not a derive macro
 
 error: cannot find attribute `rustfmt` in this scope
   --> $DIR/tool-attributes-misplaced-1.rs:9:3
    |
 LL | #[rustfmt]
    |   ^^^^^^^
+   |
+   = note: `rustfmt` is in scope, but it is not an attribute
 
 error: cannot find macro `rustfmt` in this scope
   --> $DIR/tool-attributes-misplaced-1.rs:15:5
    |
 LL |     rustfmt!();
    |     ^^^^^^^
+   |
+   = note: `rustfmt` is in scope, but it is not a macro
 
 error[E0573]: expected type, found tool module `rustfmt`
   --> $DIR/tool-attributes-misplaced-1.rs:1:10