Auto merge of #91275 - camelid:deny-test-warnings, r=jyn514

Deny warnings in rustdoc non-UI tests

These warnings were silently ignored since they did not appear in a
`.stderr` file and did not fail the test. With this change, warnings in
tests are denied, causing the tests to fail if they have warnings.

This change has already led me to find a bug in rustdoc (#91274) and a
useless test (`src/test/rustdoc/primitive/primitive-generic-impl.rs`,
though its uselessness is unrelated to its warnings).

r? `@jyn514`

src/test/rustdoc-js/summaries.rs

@@ -1,6 +1,8 @@
 #![crate_type = "lib"]
 #![crate_name = "summaries"]
 
+#![allow(rustdoc::broken_intra_doc_links)]
+
 //! This *summary* has a [link], [`code`], and [`Sidebar2`] intra-doc.
 //!
 //! This is the second paragraph. It should not be rendered.

src/test/rustdoc-ui/intra-doc/through-proc-macro.rs

@@ -1,11 +1,17 @@
+// check-pass
 // aux-build:through-proc-macro-aux.rs
 // build-aux-docs
-#![warn(broken_intra_doc_links)]
+
+// Ensure rustdoc doesn't panic on this code.
+
+#![warn(rustdoc::broken_intra_doc_links)]
+
 extern crate some_macros;
 
 #[some_macros::second]
 pub enum Boom {
     /// [Oooops]
+    //~^ WARNING unresolved link to `Oooops`
     Bam,
 }
 

src/test/rustdoc-ui/intra-doc/through-proc-macro.stderr

@@ -0,0 +1,15 @@
+warning: unresolved link to `Oooops`
+  --> $DIR/through-proc-macro.rs:13:10
+   |
+LL |     /// [Oooops]
+   |          ^^^^^^ no item named `Oooops` in scope
+   |
+note: the lint level is defined here
+  --> $DIR/through-proc-macro.rs:7:9
+   |
+LL | #![warn(rustdoc::broken_intra_doc_links)]
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
+
+warning: 1 warning emitted
+

src/test/rustdoc/auto-impl-primitive.rs

@@ -1,4 +1,7 @@
+#![feature(rustdoc_internals)]
+
 #![crate_name = "foo"]
+
 pub use std::fs::File;
 
 // @has 'foo/primitive.i16.html' '//h2[@id="synthetic-implementations"]' 'Auto Trait Implementation'

src/test/rustdoc/bad-codeblock-syntax.rs

@@ -1,3 +1,5 @@
+#![allow(rustdoc::invalid_rust_codeblocks)]
+
 // @has bad_codeblock_syntax/fn.foo.html
 // @has - '//*[@class="docblock"]' '\_'
 /// ```

src/test/rustdoc/check-source-code-urls-to-def.rs

@@ -2,6 +2,8 @@
 // aux-build:source_code.rs
 // build-aux-docs
 
+#![feature(rustdoc_internals)]
+
 #![crate_name = "foo"]
 
 extern crate source_code;
@@ -29,21 +31,20 @@ fn babar() {}
 // @has - '//a/@href' '/struct.String.html'
 // @has - '//a/@href' '/primitive.u32.html'
 // @has - '//a/@href' '/primitive.str.html'
-// @count - '//a[@href="../../src/foo/check-source-code-urls-to-def.rs.html#21"]' 5
+// @count - '//a[@href="../../src/foo/check-source-code-urls-to-def.rs.html#23"]' 5
 // @has - '//a[@href="../../source_code/struct.SourceCode.html"]' 'source_code::SourceCode'
 pub fn foo(a: u32, b: &str, c: String, d: Foo, e: bar::Bar, f: source_code::SourceCode) {
     let x = 12;
     let y: Foo = Foo;
     let z: Bar = bar::Bar { field: Foo };
     babar();
-    // @has - '//a[@href="../../src/foo/check-source-code-urls-to-def.rs.html#24"]' 'hello'
+    // @has - '//a[@href="../../src/foo/check-source-code-urls-to-def.rs.html#26"]' 'hello'
     y.hello();
 }
 
 // @has - '//a[@href="../../src/foo/auxiliary/source-code-bar.rs.html#14-16"]' 'bar::sub::Trait'
 // @has - '//a[@href="../../src/foo/auxiliary/source-code-bar.rs.html#14-16"]' 'Trait'
-pub fn foo2<T: bar::sub::Trait, V: Trait>(t: &T, v: &V, b: bool) {
-}
+pub fn foo2<T: bar::sub::Trait, V: Trait>(t: &T, v: &V, b: bool) {}
 
 // @has - '//a[@href="../../foo/primitive.bool.html"]' 'bool'
 #[doc(primitive = "bool")]

src/test/rustdoc/const-generics/const-impl.rs

@@ -1,3 +1,5 @@
+#![allow(incomplete_features)]
+
 #![feature(adt_const_params)]
 
 #![crate_name = "foo"]
@@ -15,15 +17,15 @@ pub struct VSet<T, const ORDER: Order> {
     inner: Vec<T>,
 }
 
-// @has foo/struct.VSet.html '//div[@id="impl"]/h3[@class="code-header in-band"]' 'impl<T> VSet<T, {Order::Sorted}>'
-impl <T> VSet<T, {Order::Sorted}> {
+// @has foo/struct.VSet.html '//div[@id="impl"]/h3[@class="code-header in-band"]' 'impl<T> VSet<T, { Order::Sorted }>'
+impl<T> VSet<T, { Order::Sorted }> {
     pub fn new() -> Self {
         Self { inner: Vec::new() }
     }
 }
 
-// @has foo/struct.VSet.html '//div[@id="impl-1"]/h3[@class="code-header in-band"]' 'impl<T> VSet<T, {Order::Unsorted}>'
-impl <T> VSet<T, {Order::Unsorted}> {
+// @has foo/struct.VSet.html '//div[@id="impl-1"]/h3[@class="code-header in-band"]' 'impl<T> VSet<T, { Order::Unsorted }>'
+impl<T> VSet<T, { Order::Unsorted }> {
     pub fn new() -> Self {
         Self { inner: Vec::new() }
     }
@@ -31,7 +33,7 @@ impl <T> VSet<T, {Order::Unsorted}> {
 
 pub struct Escape<const S: &'static str>;
 
-// @has foo/struct.Escape.html '//div[@id="impl"]/h3[@class="code-header in-band"]' 'impl Escape<{ r#"<script>alert("Escape");</script>"# }>'
-impl Escape<{ r#"<script>alert("Escape");</script>"# }> {
+// @has foo/struct.Escape.html '//div[@id="impl"]/h3[@class="code-header in-band"]' 'impl Escape<r#"<script>alert("Escape");</script>"#>'
+impl Escape<r#"<script>alert("Escape");</script>"#> {
     pub fn f() {}
 }

src/test/rustdoc/default-trait-method.rs

@@ -1,4 +1,4 @@
-#![feature(specialization)]
+#![feature(min_specialization)]
 
 // @has default_trait_method/trait.Item.html
 // @has - '//*[@id="tymethod.foo"]' 'fn foo()'

src/test/rustdoc/doc-cfg.rs

@@ -96,6 +96,6 @@ pub fn uses_cfg_target_feature() {
 // @has doc_cfg/fn.multiple_attrs.html \
 //  '//*[@id="main"]/*[@class="item-info"]/*[@class="stab portability"]' \
 //  'This is supported on x and y and z only.'
-#[doc(inline, cfg(x))]
+#[doc(cfg(x))]
 #[doc(cfg(y), cfg(z))]
 pub fn multiple_attrs() {}

src/test/rustdoc/intra-doc/associated-defaults.rs

@@ -1,4 +1,4 @@
-#![deny(intra_doc_link_resolution_failure)]
+#![deny(rustdoc::broken_intra_doc_links)]
 #![feature(associated_type_defaults)]
 
 pub trait TraitWithDefault {

src/test/rustdoc/intra-doc/associated-items.rs

@@ -1,4 +1,4 @@
-#![deny(intra_doc_link_resolution_failure)]
+#![deny(rustdoc::broken_intra_doc_links)]
 
 /// [`std::collections::BTreeMap::into_iter`]
 /// [`String::from`] is ambiguous as to which `From` impl

src/test/rustdoc/intra-doc/auxiliary/my-core.rs

@@ -1,4 +1,4 @@
-#![feature(no_core, lang_items)]
+#![feature(no_core, lang_items, rustdoc_internals)]
 #![no_core]
 #![crate_type="rlib"]
 

src/test/rustdoc/intra-doc/cross-crate/additional_doc.rs

@@ -1,6 +1,6 @@
 // aux-build:additional_doc.rs
 // build-aux-docs
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 
 extern crate my_rand;
 

src/test/rustdoc/intra-doc/cross-crate/auxiliary/additional_doc.rs

@@ -1,5 +1,5 @@
 #![crate_name = "my_rand"]
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 
 pub trait RngCore {}
 /// Rng extends [`RngCore`].

src/test/rustdoc/intra-doc/cross-crate/auxiliary/hidden.rs

@@ -1,5 +1,5 @@
 #![crate_name = "hidden_dep"]
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 
 #[doc(hidden)]
 pub mod __reexport {

src/test/rustdoc/intra-doc/cross-crate/auxiliary/intra-doc-basic.rs

@@ -1,5 +1,5 @@
 #![crate_name = "a"]
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 
 pub struct Foo;
 

src/test/rustdoc/intra-doc/cross-crate/auxiliary/macro_inner.rs

@@ -1,5 +1,5 @@
 #![crate_name = "macro_inner"]
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 
 pub struct Foo;
 

src/test/rustdoc/intra-doc/cross-crate/auxiliary/module.rs

@@ -1,5 +1,5 @@
 #![crate_name = "module_inner"]
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 /// [SomeType] links to [bar]
 pub struct SomeType;
 pub trait SomeTrait {}

src/test/rustdoc/intra-doc/cross-crate/auxiliary/submodule-inner.rs

@@ -1,5 +1,5 @@
 #![crate_name = "a"]
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 
 pub mod bar {
    pub struct Bar;

src/test/rustdoc/intra-doc/cross-crate/auxiliary/submodule-outer.rs

@@ -1,5 +1,5 @@
 #![crate_name = "bar"]
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 
 pub trait Foo {
     /// [`Bar`] [`Baz`]

src/test/rustdoc/intra-doc/cross-crate/basic.rs

@@ -1,6 +1,6 @@
 // aux-build:intra-doc-basic.rs
 // build-aux-docs
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 
 // from https://github.com/rust-lang/rust/issues/65983
 extern crate a;

src/test/rustdoc/intra-doc/cross-crate/hidden.rs

@@ -1,6 +1,6 @@
 // aux-build:hidden.rs
 // build-aux-docs
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 
 // tests https://github.com/rust-lang/rust/issues/73363
 

src/test/rustdoc/intra-doc/cross-crate/macro.rs

@@ -1,7 +1,7 @@
 // aux-build:macro_inner.rs
 // aux-build:proc_macro.rs
 // build-aux-docs
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 extern crate macro_inner;
 extern crate proc_macro_inner;
 

src/test/rustdoc/intra-doc/cross-crate/module.rs

@@ -1,7 +1,7 @@
 // outer.rs
 // aux-build: module.rs
 // build-aux-docs
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 extern crate module_inner;
 // @has 'module/bar/index.html' '//a[@href="../../module_inner/trait.SomeTrait.html"]' 'SomeTrait'
 // @has 'module/bar/index.html' '//a[@href="../../module_inner/struct.SomeType.html"]' 'SomeType'

src/test/rustdoc/intra-doc/cross-crate/submodule-inner.rs

@@ -1,6 +1,6 @@
 // aux-build:submodule-inner.rs
 // build-aux-docs
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 
 extern crate a;
 

src/test/rustdoc/intra-doc/cross-crate/submodule-outer.rs

@@ -1,6 +1,6 @@
 // aux-build:submodule-outer.rs
 // edition:2018
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 
 extern crate bar as bar_;
 

src/test/rustdoc/intra-doc/cross-crate/traits.rs

@@ -1,6 +1,6 @@
 // aux-build:traits.rs
 // build-aux-docs
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 
 extern crate inner;
 use inner::SomeTrait;

src/test/rustdoc/intra-doc/disambiguators-removed.rs

@@ -1,4 +1,4 @@
-#![deny(intra_doc_link_resolution_failure)]
+#![deny(rustdoc::broken_intra_doc_links)]
 // first try backticks
 /// Trait: [`trait@Name`], fn: [`fn@Name`], [`Name`][`macro@Name`]
 // @has disambiguators_removed/struct.AtDisambiguator.html

src/test/rustdoc/intra-doc/email-address.rs

@@ -1,3 +1,5 @@
+#![allow(rustdoc::broken_intra_doc_links)]
+
 //! Email me at <hello@example.com>.
 //! Email me at <hello-world@example.com>.
 //! Email me at <hello@localhost> (this warns but will still become a link).

src/test/rustdoc/intra-doc/extern-crate.rs

@@ -4,6 +4,6 @@
 // though they would never actually get displayed. This tripped intra-doc-link resolution failures,
 // for items that aren't under our control, and not actually getting documented!
 
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 
 extern crate inner;

src/test/rustdoc/intra-doc/external-traits.rs

@@ -2,7 +2,7 @@
 // ignore-cross-compile
 
 #![crate_name = "outer"]
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 
 // using a trait that has intra-doc links on it from another crate (whether re-exporting or just
 // implementing it) used to give spurious resolution failure warnings

src/test/rustdoc/intra-doc/in-bodies.rs

@@ -1,6 +1,6 @@
 // we need to make sure that intra-doc links on trait impls get resolved in the right scope
 
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 
 pub mod inner {
     pub struct SomethingOutOfScope;

src/test/rustdoc/intra-doc/issue-82209.rs

@@ -1,5 +1,5 @@
 #![crate_name = "foo"]
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 pub enum Foo {
     Bar {
         abc: i32,

src/test/rustdoc/intra-doc/libstd-re-export.rs

@@ -1,4 +1,4 @@
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 #![feature(intra_doc_pointers)]
 
 pub use std::*;

src/test/rustdoc/intra-doc/mod-ambiguity.rs

@@ -1,4 +1,4 @@
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 
 
 pub fn foo() {

src/test/rustdoc/intra-doc/prim-assoc.rs

@@ -1,4 +1,4 @@
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 
 //! [i32::MAX]
 // @has prim_assoc/index.html '//a[@href="{{channel}}/std/primitive.i32.html#associatedconstant.MAX"]' "i32::MAX"

src/test/rustdoc/intra-doc/prim-methods-external-core.rs

@@ -3,7 +3,7 @@
 // ignore-cross-compile
 // only-linux
 
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 #![feature(no_core, lang_items)]
 #![no_core]
 #![crate_type = "rlib"]

src/test/rustdoc/intra-doc/prim-methods-local.rs

@@ -1,5 +1,5 @@
-#![deny(broken_intra_doc_links)]
-#![feature(no_core, lang_items)]
+#![deny(rustdoc::broken_intra_doc_links)]
+#![feature(no_core, lang_items, rustdoc_internals)]
 #![no_core]
 #![crate_type = "rlib"]
 

src/test/rustdoc/intra-doc/prim-methods.rs

@@ -1,4 +1,4 @@
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 
 
 // @has prim_methods/index.html

src/test/rustdoc/intra-doc/prim-precedence.rs

@@ -1,4 +1,4 @@
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 
 pub mod char {
     /// [char]

src/test/rustdoc/intra-doc/primitive-disambiguators.rs

@@ -1,4 +1,4 @@
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 // @has primitive_disambiguators/index.html
 // @has - '//a/@href' '{{channel}}/std/primitive.str.html#method.trim'
 //! [str::trim()]

src/test/rustdoc/intra-doc/primitive-non-default-impl.rs

@@ -1,4 +1,4 @@
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 
 
 // @has primitive_non_default_impl/fn.str_methods.html

src/test/rustdoc/intra-doc/private-failures-ignored.rs

@@ -2,7 +2,7 @@
 // These failures were legitimate, but not truly relevant - the docs in question couldn't be
 // checked for accuracy anyway.
 
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 
 /// ooh, i'm a [rebel] just for kicks
 struct SomeStruct;

src/test/rustdoc/intra-doc/private.rs

@@ -1,8 +1,11 @@
-#![crate_name = "private"]
 // compile-flags: --document-private-items
 
 // make sure to update `rustdoc-ui/intra-doc/private.rs` if you update this file
 
+#![allow(rustdoc::private_intra_doc_links)]
+
+#![crate_name = "private"]
+
 /// docs [DontDocMe] [DontDocMe::f] [DontDocMe::x]
 // @has private/struct.DocMe.html '//*a[@href="struct.DontDocMe.html"]' 'DontDocMe'
 // @has private/struct.DocMe.html '//*a[@href="struct.DontDocMe.html#method.f"]' 'DontDocMe::f'

src/test/rustdoc/intra-doc/proc-macro.rs

@@ -1,6 +1,6 @@
 // aux-build:proc-macro-macro.rs
 // build-aux-docs
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 
 extern crate proc_macro_macro;
 

src/test/rustdoc/intra-doc/pub-use.rs

@@ -1,5 +1,5 @@
 // aux-build: intra-link-pub-use.rs
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 #![crate_name = "outer"]
 
 extern crate inner;

src/test/rustdoc/intra-doc/raw-ident-self.rs

@@ -1,4 +1,4 @@
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 pub mod r#impl {
     pub struct S;
 

src/test/rustdoc/intra-doc/trait-item.rs

@@ -1,4 +1,4 @@
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 
 /// Link to [S::assoc_fn()]
 /// Link to [Default::default()]

src/test/rustdoc/intra-doc/true-false.rs

@@ -1,4 +1,4 @@
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 #![crate_name = "foo"]
 
 

src/test/rustdoc/intra-doc/type-alias.rs

@@ -1,6 +1,6 @@
 // Regression test for issue #86120.
 
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 #![crate_name = "foo"]
 
 pub struct Foo;

src/test/rustdoc/intra-link-prim-self.rs

@@ -1,6 +1,7 @@
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 #![feature(lang_items)]
 #![feature(no_core)]
+#![feature(rustdoc_internals)]
 #![no_core]
 
 #[lang = "usize"]

src/test/rustdoc/issue-12834.rs

@@ -1,6 +1,7 @@
 // Tests that failing to syntax highlight a rust code-block doesn't cause
 // rustdoc to fail, while still rendering the code-block (without highlighting).
 
+#![allow(rustdoc::invalid_rust_codeblocks)]
 
 // @has issue_12834/fn.foo.html
 // @has - //pre 'a + b '

src/test/rustdoc/issue-15318-3.rs

@@ -1,3 +1,5 @@
+#![feature(rustdoc_internals)]
+
 // @has issue_15318_3/primitive.pointer.html
 
 /// dox

src/test/rustdoc/issue-23511.rs

@@ -1,4 +1,5 @@
 #![feature(lang_items)]
+#![feature(rustdoc_internals)]
 #![no_std]
 
 pub mod str {

src/test/rustdoc/issue-42760.rs

@@ -1,3 +1,5 @@
+#![allow(rustdoc::invalid_rust_codeblocks)]
+
 // @has issue_42760/struct.NonGen.html
 // @has - '//h2' 'Example'
 

src/test/rustdoc/issue-43869.rs

@@ -2,6 +2,7 @@ pub fn g() -> impl Iterator<Item=u8> {
     Some(1u8).into_iter()
 }
 
+#[allow(unused_parens)]
 pub fn h() -> (impl Iterator<Item=u8>) {
     Some(1u8).into_iter()
 }

src/test/rustdoc/link-title-escape.rs

@@ -1,3 +1,5 @@
+#![allow(rustdoc::broken_intra_doc_links)]
+
 #![crate_name = "foo"]
 
 //! hello [foo]

src/test/rustdoc/primitive-generic-impl.rs

@@ -1,5 +0,0 @@
-#![crate_name = "foo"]
-
-include!("primitive/primitive-generic-impl.rs");
-
-// @has foo/primitive.i32.html '//div[@id="impl-ToString"]//h3[@class="code-header in-band"]' 'impl<T> ToString for T'

src/test/rustdoc/primitive/primitive-generic-impl.rs

@@ -1,3 +1,9 @@
+#![feature(rustdoc_internals)]
+
+#![crate_name = "foo"]
+
+// @has foo/primitive.i32.html '//div[@id="impl-ToString"]//h3[@class="code-header in-band"]' 'impl<T> ToString for T'
+
 #[doc(primitive = "i32")]
 /// Some useless docs, wouhou!
 mod i32 {}

src/test/rustdoc/proc-macro.rs

@@ -8,7 +8,7 @@
 // @has some_macros/index.html
 // @has - '//a/[@href="attr.some_proc_attr.html"]' 'some_proc_attr'
 
-//! include a link to [some_proc_macro] to make sure it works.
+//! include a link to [some_proc_macro!] to make sure it works.
 
 extern crate proc_macro;
 

src/test/rustdoc/range-arg-pattern.rs

@@ -2,4 +2,4 @@
 
 // @has foo/fn.f.html
 // @has - '//*[@class="rust fn"]' 'pub fn f(_: u8)'
-pub fn f(0u8...255: u8) {}
+pub fn f(0u8..=255: u8) {}

src/test/rustdoc/raw-ident-eliminate-r-hashtag.rs

@@ -2,6 +2,7 @@
 
 pub mod internal {
     // @has 'raw_ident_eliminate_r_hashtag/internal/struct.mod.html'
+    #[allow(non_camel_case_types)]
     pub struct r#mod;
 
     /// See [name], [other name]

src/test/rustdoc/sidebar-items.rs

@@ -30,11 +30,11 @@ pub struct Bar {
 
 // @has foo/enum.En.html
 // @has - '//*[@class="sidebar-title"]/a[@href="#variants"]' 'Variants'
-// @has - '//*[@class="sidebar-links"]/a' 'foo'
-// @has - '//*[@class="sidebar-links"]/a' 'bar'
+// @has - '//*[@class="sidebar-links"]/a' 'Foo'
+// @has - '//*[@class="sidebar-links"]/a' 'Bar'
 pub enum En {
-    foo,
-    bar,
+    Foo,
+    Bar,
 }
 
 // @has foo/union.MyUnion.html

src/test/rustdoc/titles.rs

@@ -1,5 +1,7 @@
 #![crate_name = "foo"]
 
+#![feature(rustdoc_internals)]
+
 // @matches 'foo/index.html' '//h1' 'Crate foo'
 
 // @matches 'foo/foo_mod/index.html' '//h1' 'Module foo::foo_mod'

src/tools/compiletest/src/runtest.rs

@@ -1452,6 +1452,8 @@ impl<'test> TestCx<'test> {
             .arg(aux_dir)
             .arg("-o")
             .arg(out_dir)
+            .arg("--deny")
+            .arg("warnings")
             .arg(&self.testpaths.file)
             .args(&self.props.compile_flags);