Update rustdoc-ui versions of the doc-attr test

It seems there are two copies of it: one in `src/test/ui/attributes/` and one in `src/test/rustdoc-ui/`. I'm guessing this is to test that the lint is emitted both when you run the compiler and when you run rustdoc.
rust-lang · Dylan-DPC-zz · Jan 9, 2021 · Jan 11, 2021 · Feb 20, 2021 · Feb 21, 2021
commit 13884dc2af3d993629eec4a5489dc99bd0a00a71
diff --git a/src/test/rustdoc-ui/doc-attr.rs b/src/test/rustdoc-ui/doc-attr.rs
@@ -8,3 +8,18 @@
 //~^ ERROR unknown `doc` attribute
 //~^^ WARN
 pub fn foo() {}
+
+#[doc(123)]
+//~^ ERROR unknown `doc` attribute
+//~| WARN
+#[doc("hello", "bar")]
+//~^ ERROR unknown `doc` attribute
+//~| WARN
+//~| ERROR unknown `doc` attribute
+//~| WARN
+#[doc(foo::bar, crate::bar::baz = "bye")]
+//~^ ERROR unknown `doc` attribute
+//~| WARN
+//~| ERROR unknown `doc` attribute
+//~| WARN
+fn bar() {}
diff --git a/src/test/rustdoc-ui/doc-attr.stderr b/src/test/rustdoc-ui/doc-attr.stderr
@@ -13,6 +13,51 @@ LL | #![deny(warnings)]
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
    = note: for more information, see issue #82730 <https://github.com/rust-lang/rust/issues/82730>
 
+error: unknown `doc` attribute
+  --> $DIR/doc-attr.rs:12:7
+   |
+LL | #[doc(123)]
+   |       ^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #82730 <https://github.com/rust-lang/rust/issues/82730>
+
+error: unknown `doc` attribute
+  --> $DIR/doc-attr.rs:15:7
+   |
+LL | #[doc("hello", "bar")]
+   |       ^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #82730 <https://github.com/rust-lang/rust/issues/82730>
+
+error: unknown `doc` attribute
+  --> $DIR/doc-attr.rs:15:16
+   |
+LL | #[doc("hello", "bar")]
+   |                ^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #82730 <https://github.com/rust-lang/rust/issues/82730>
+
+error: unknown `doc` attribute ``
+  --> $DIR/doc-attr.rs:20:7
+   |
+LL | #[doc(foo::bar, crate::bar::baz = "bye")]
+   |       ^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #82730 <https://github.com/rust-lang/rust/issues/82730>
+
+error: unknown `doc` attribute ``
+  --> $DIR/doc-attr.rs:20:17
+   |
+LL | #[doc(foo::bar, crate::bar::baz = "bye")]
+   |                 ^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #82730 <https://github.com/rust-lang/rust/issues/82730>
+
 error: unknown `doc` attribute `as_ptr`
   --> $DIR/doc-attr.rs:3:8
    |
@@ -22,5 +67,5 @@ LL | #![doc(as_ptr)]
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
    = note: for more information, see issue #82730 <https://github.com/rust-lang/rust/issues/82730>
 
-error: aborting due to 2 previous errors
+error: aborting due to 7 previous errors