Use warn() for extra diagnostics; with -D warnings this leads to errors

This is needed to properly respect "deny_warnings = false" in config.toml

Author: RalfJung

src/liballoc/lib.rs

@@ -64,8 +64,8 @@
 #![needs_allocator]
 
 #![warn(deprecated_in_future)]
-#![deny(intra_doc_link_resolution_failure)]
-#![deny(missing_debug_implementations)]
+#![warn(intra_doc_link_resolution_failure)]
+#![warn(missing_debug_implementations)]
 
 #![cfg_attr(not(test), feature(fn_traits))]
 #![cfg_attr(not(test), feature(generator_trait))]

src/libcore/lib.rs

@@ -61,9 +61,9 @@
 #![no_core]
 
 #![warn(deprecated_in_future)]
-#![deny(missing_docs)]
-#![deny(intra_doc_link_resolution_failure)]
-#![deny(missing_debug_implementations)]
+#![warn(missing_docs)]
+#![warn(intra_doc_link_resolution_failure)]
+#![warn(missing_debug_implementations)]
 
 #![feature(allow_internal_unstable)]
 #![feature(arbitrary_self_types)]