Auto merge of #116230 - matthiaskrgr:rollup-hi1ciwy, r=matthiaskrgr

Rollup of 3 pull requests

Successful merges:

 - #116191 (Add regression test for #56098)
 - #116214 (rustdoc: rename `issue-\d+.rs` tests to have meaningful names)
 - #116221 (core/slice: Fix inconsistency between docs for `rotate_left` and `rotate_right`)

r? `@ghost`
`@rustbot` modify labels: rollup

library/core/src/slice/mod.rs

@@ -3410,7 +3410,7 @@ impl<T> [T] {
     /// assert_eq!(a, ['e', 'f', 'a', 'b', 'c', 'd']);
     /// ```
     ///
-    /// Rotate a subslice:
+    /// Rotating a subslice:
     ///
     /// ```
     /// let mut a = ['a', 'b', 'c', 'd', 'e', 'f'];

tests/rustdoc/issue-15169.rs → tests/rustdoc/anchor-id-trait-method-15169.rs

@@ -1,3 +1,7 @@
 // @has issue_15169/struct.Foo.html '//*[@id="method.eq"]' 'fn eq'
+
+// https://github.com/rust-lang/rust/issues/15169
+#![crate_name="issue_15169"]
+
 #[derive(PartialEq)]
 pub struct Foo;

tests/rustdoc/issue-20646.rs → tests/rustdoc/assoc-type-bindings-20646.rs

@@ -1,6 +1,8 @@
 // aux-build:issue-20646.rs
 // ignore-cross-compile
 
+// https://github.com/rust-lang/rust/issues/20646
+#![crate_name="issue_20646"]
 #![feature(associated_types)]
 
 extern crate issue_20646;

tests/rustdoc/issue-19190-2.rs → tests/rustdoc/deref-methods-19190-foreign-type.rs

@@ -1,3 +1,7 @@
+// https://github.com/rust-lang/rust/issues/19190
+
+#![crate_name="issue_19190_2"]
+
 use std::ops::Deref;
 
 pub struct Bar;

tests/rustdoc/issue-19190-3.rs → tests/rustdoc/deref-methods-19190-inline.rs

@@ -1,6 +1,9 @@
 // aux-build:issue-19190-3.rs
 // ignore-cross-compile
 
+// https://github.com/rust-lang/rust/issues/19190
+#![crate_name="issue_19190_3"]
+
 extern crate issue_19190_3;
 
 use std::ops::Deref;

tests/rustdoc/issue-19190.rs → tests/rustdoc/deref-methods-19190.rs

@@ -1,3 +1,6 @@
+// https://github.com/rust-lang/rust/issues/19190
+#![crate_name="issue_19190"]
+
 use std::ops::Deref;
 
 pub struct Foo;

tests/rustdoc/issue-13698.rs → tests/rustdoc/doc-hidden-method-13698.rs

@@ -1,6 +1,9 @@
 // aux-build:issue-13698.rs
 // ignore-cross-compile
 
+// https://github.com/rust-lang/rust/issues/13698
+#![crate_name="issue_13698"]
+
 extern crate issue_13698;
 
 pub struct Foo;

tests/rustdoc/issue-18199.rs → tests/rustdoc/doc-test-attr-18199.rs

@@ -1,4 +1,5 @@
 // compile-flags:--test
+// https://github.com/rust-lang/rust/issues/18199
 
 #![doc(test(attr(feature(staged_api))))]
 

tests/rustdoc/issue-15347.rs → tests/rustdoc/document-hidden-items-15347.rs

@@ -1,4 +1,7 @@
 // compile-flags: -Z unstable-options --document-hidden-items
+// https://github.com/rust-lang/rust/issues/15347
+
+#![crate_name="issue_15347"]
 
 // @has issue_15347/fn.foo.html
 #[doc(hidden)]

tests/rustdoc/issue-12834.rs → tests/rustdoc/highlight-invalid-rust-12834.rs

@@ -1,6 +1,8 @@
 // Tests that failing to syntax highlight a rust code-block doesn't cause
 // rustdoc to fail, while still rendering the code-block (without highlighting).
+// https://github.com/rust-lang/rust/issues/12834
 
+#![crate_name="issue_12834"]
 #![allow(rustdoc::invalid_rust_codeblocks)]
 
 // @has issue_12834/fn.foo.html

tests/rustdoc/issue-19181.rs → tests/rustdoc/ice-type-error-19181.rs

@@ -1,4 +1,5 @@
 // compile-flags:--test
+// https://github.com/rust-lang/rust/issues/19181
 
 // rustdoc should not panic when target crate has compilation errors
 

tests/rustdoc/issue-20175.rs → tests/rustdoc/impl-ref-20175.rs

@@ -1,3 +1,7 @@
+// https://github.com/rust-lang/rust/issues/20175
+
+#![crate_name="issue_20175"]
+
 pub trait Foo {
     fn foo(&self) {}
 }

tests/rustdoc/issue-16265-1.rs → tests/rustdoc/infinite-redirection-16265-1.rs

@@ -1,3 +1,6 @@
+// https://github.com/rust-lang/rust/issues/16265
+#![crate_name="issue_16265_1"]
+
 pub struct Foo;
 
 // @hasraw issue_16265_1/traits/index.html 'source'

tests/rustdoc/issue-16265-2.rs → tests/rustdoc/infinite-redirection-16265-2.rs

@@ -1,3 +1,6 @@
+// https://github.com/rust-lang/rust/issues/16265
+#![crate_name="issue_16265_2"]
+
 // @hasraw issue_16265_2/index.html 'source'
 
 trait Y {}

tests/rustdoc/issue-20727-2.rs → tests/rustdoc/inline-assoc-type-20727-bindings.rs

@@ -1,6 +1,9 @@
 // aux-build:issue-20727.rs
 // ignore-cross-compile
 
+// https://github.com/rust-lang/rust/issues/20727
+#![crate_name="issue_20727_2"]
+
 extern crate issue_20727;
 
 // @has issue_20727_2/trait.Add.html

tests/rustdoc/issue-20727-3.rs → tests/rustdoc/inline-assoc-type-20727-bounds-deref.rs

@@ -1,6 +1,9 @@
 // aux-build:issue-20727.rs
 // ignore-cross-compile
 
+// https://github.com/rust-lang/rust/issues/20727
+#![crate_name="issue_20727_3"]
+
 extern crate issue_20727;
 
 pub trait Bar {}

tests/rustdoc/issue-20727-4.rs → tests/rustdoc/inline-assoc-type-20727-bounds-index.rs

@@ -1,6 +1,9 @@
 // aux-build:issue-20727.rs
 // ignore-cross-compile
 
+// https://github.com/rust-lang/rust/issues/20727
+#![crate_name="issue_20727_4"]
+
 extern crate issue_20727;
 
 // @has issue_20727_4/trait.Index.html

tests/rustdoc/issue-20727.rs → tests/rustdoc/inline-assoc-type-20727-bounds.rs

@@ -1,6 +1,9 @@
 // aux-build:issue-20727.rs
 // ignore-cross-compile
 
+// https://github.com/rust-lang/rust/issues/20727
+#![crate_name="issue_20727"]
+
 extern crate issue_20727;
 
 // @has issue_20727/trait.Deref.html

tests/rustdoc/issue-16019.rs → tests/rustdoc/macro-ice-16019.rs

@@ -1,3 +1,5 @@
+// https://github.com/rust-lang/rust/issues/16019
+
 macro_rules! define_struct {
     ($rounds:expr) => (
         struct Struct {

tests/rustdoc/issue-17476.rs → tests/rustdoc/method-link-foreign-trait-impl-17476.rs

@@ -1,5 +1,8 @@
 // aux-build:issue-17476.rs
 // ignore-cross-compile
+// https://github.com/rust-lang/rust/issues/17476
+
+#![crate_name="issue_17476"]
 
 extern crate issue_17476;
 

tests/rustdoc/issue-15318-3.rs → tests/rustdoc/primitive-raw-pointer-dox-15318-3.rs

@@ -1,3 +1,5 @@
+// https://github.com/rust-lang/rust/issues/15318
+#![crate_name="issue_15318_3"]
 #![feature(rustc_attrs)]
 
 // @has issue_15318_3/primitive.pointer.html

tests/rustdoc/issue-15318.rs → tests/rustdoc/primitive-raw-pointer-link-15318.rs

@@ -1,6 +1,8 @@
 // aux-build:issue-15318.rs
 // ignore-cross-compile
+// https://github.com/rust-lang/rust/issues/15318
 
+#![crate_name="issue_15318"]
 #![no_std]
 
 extern crate issue_15318;

tests/rustdoc/issue-15318-2.rs → tests/rustdoc/primitive-raw-pointer-link-no-inlined-15318-2.rs

@@ -1,5 +1,8 @@
 // aux-build:issue-15318.rs
 // ignore-cross-compile
+// https://github.com/rust-lang/rust/issues/15318
+
+#![crate_name="issue_15318_2"]
 #![no_std]
 
 extern crate issue_15318;

tests/ui/foreign/foreign-fn-linkname.rs

@@ -2,6 +2,9 @@
 // ignore-wasm32-bare no libc to test ffi with
 // ignore-sgx no libc
 
+// Ensure no false positive on "unused extern crate" lint
+#![deny(unused_extern_crates)]
+
 #![feature(rustc_private)]
 
 extern crate libc;