Auto merge of #52796 - ollie27:rustdoc_beta_lints, r=QuietMisdreavus

[beta] Disable lints in rustdoc

The lint handling in rustdoc 1.28 is still incomplete so I think it would be best to disable it for the stable release. The main thing that's missing is that cargo doesn't cap lints for dependencies. This was fixed in master by #52354 and rust-lang/cargo#5765 but they haven't been backported. Additionally rustdoc is still emitting lints that are not on its whitelist https://github.com/rust-lang/rust/issues/51661#issuecomment-406800119.

cc. @rust-lang/rustdoc
diff --git a/src/librustdoc/core.rs b/src/librustdoc/core.rs
index e516192..c40e1df 100644
--- a/src/librustdoc/core.rs
+++ b/src/librustdoc/core.rs
@@ -214,7 +214,7 @@
         } else {
             vec![]
         },
-        lint_cap: Some(lint::Forbid),
+        lint_cap: Some(lint::Allow),
         cg,
         externs,
         target_triple: triple.unwrap_or(host_triple),
diff --git a/src/test/rustdoc-ui/deny-intra-link-resolution-failure.rs b/src/test/rustdoc-ui/deny-intra-link-resolution-failure.rs
index 85d19c8..1df5a63 100644
--- a/src/test/rustdoc-ui/deny-intra-link-resolution-failure.rs
+++ b/src/test/rustdoc-ui/deny-intra-link-resolution-failure.rs
@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+// ignore-test
+
 #![deny(intra_doc_link_resolution_failure)]
 
 /// [v2] //~ ERROR
diff --git a/src/test/rustdoc-ui/intra-links-warning.rs b/src/test/rustdoc-ui/intra-links-warning.rs
index d6bc275..c99746e 100644
--- a/src/test/rustdoc-ui/intra-links-warning.rs
+++ b/src/test/rustdoc-ui/intra-links-warning.rs
@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+// ignore-test
+
 // compile-pass
 
        //! Test with [Foo::baz], [Bar::foo], ...