rustdoc: add missing article

notriddle · jsha · notriddle · commit 94396711dd4a · 2022-06-13T09:28:49.000-07:00
Co-authored-by: Jacob Hoffman-Andrews &lt;github@hoffman-andrews.com&gt;
diff --git a/compiler/rustc_passes/src/check_attr.rs b/compiler/rustc_passes/src/check_attr.rs
@@ -815,7 +815,7 @@ impl CheckAttrVisitor<'_> {
                         .sess
                         .struct_span_err(
                             meta.span(),
-                            "`#[doc(tuple_variadic)]` must used on the first of a set of tuple trait impls with varying arity",
+                            "`#[doc(tuple_variadic)]` must be used on the first of a set of tuple trait impls with varying arity",
                         )
                         .emit();
                     return false;
diff --git a/src/test/rustdoc-ui/tuple-variadic-check.stderr b/src/test/rustdoc-ui/tuple-variadic-check.stderr
@@ -1,4 +1,4 @@
-error: `#[doc(tuple_variadic)]` must used on the first of a set of tuple trait impls with varying arity
+error: `#[doc(tuple_variadic)]` must be used on the first of a set of tuple trait impls with varying arity
   --> $DIR/tuple-variadic-check.rs:12:7
    |
 LL | #[doc(tuple_variadic)]

Original file line number	Diff line number	Diff line change
`@@ -815,7 +815,7 @@ impl CheckAttrVisitor<'_> {`
`815`	`815`	`.sess`
`816`	`816`	`.struct_span_err(`
`817`	`817`	`meta.span(),`
`818`		- "`#[doc(tuple_variadic)]` must used on the first of a set of tuple trait impls with varying arity",
	`818`	+ "`#[doc(tuple_variadic)]` must be used on the first of a set of tuple trait impls with varying arity",
`819`	`819`	`)`
`820`	`820`	`.emit();`
`821`	`821`	`return false;`
Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		-error: `#[doc(tuple_variadic)]` must used on the first of a set of tuple trait impls with varying arity
	`1`	+error: `#[doc(tuple_variadic)]` must be used on the first of a set of tuple trait impls with varying arity
`2`	`2`	`--> $DIR/tuple-variadic-check.rs:12:7`
`3`	`3`	`\|`
`4`	`4`	`LL \| #[doc(tuple_variadic)]`