make it compile again

src/test/compile-fail/unknown-tool-name.rs

@@ -10,7 +10,7 @@
 
 #![feature(tool_attributes)]
 
-#![foo::bar] //~ ERROR An unknown tool name found in scoped attributes: `foo::bar`. [E0693]
+#![foo::bar] //~ ERROR an unknown tool name found in scoped attribute: `foo::bar`. [E0694]
 
-#[foo::bar] //~ ERROR An unknown tool name found in scoped attributes: `foo::bar`. [E0693]
+#[foo::bar] //~ ERROR an unknown tool name found in scoped attribute: `foo::bar`. [E0694]
 fn main() {}

src/test/compile-fail/unknown_tool_attributes-1.rs

@@ -14,5 +14,5 @@
 
 #[foo::bar]
 //~^ ERROR scoped attribute `foo::bar` is experimental (see issue #44690) [E0658]
-//~^^ ERROR An unknown tool name found in scoped attributes: `foo::bar`. [E0693]
+//~^^ ERROR an unknown tool name found in scoped attribute: `foo::bar`. [E0694]
 fn main() {}

src/test/ui/feature-gate-tool_attributes.stderr

@@ -1,10 +1,11 @@
 error[E0658]: scoped attribute `rustfmt::skip` is experimental (see issue #44690)
   --> $DIR/feature-gate-tool_attributes.rs:12:5
    |
-12 |     #[rustfmt::skip] //~ ERROR scoped attribute `rustfmt::skip` is experimental
+LL |     #[rustfmt::skip] //~ ERROR scoped attribute `rustfmt::skip` is experimental
    |     ^^^^^^^^^^^^^^^^
    |
    = help: add #![feature(tool_attributes)] to the crate attributes to enable
 
 error: aborting due to previous error
 
+For more information about this error, try `rustc --explain E0658`.