Auto merge of #148544 - matthiaskrgr:rollup-n9dqgwc, r=matthiaskrgr

Rollup of 8 pull requests

Successful merges:

 - rust-lang/rust#147994 (Deduplicate deprecation warning when using unit or tuple structs)
 - rust-lang/rust#148440 ([rustdoc search] Simplify itemTypes and filter "dependencies")
 - rust-lang/rust#148501 (triagebot: Create Zulip topics for libs backports)
 - rust-lang/rust#148517 (Remove no longer necessary lint allow)
 - rust-lang/rust#148518 (Unify the configuration of the compiler docs)
 - rust-lang/rust#148523 (miri subtree update)
 - rust-lang/rust#148525 (Fix ICE from lit_to_mir_constant caused by type error)
 - rust-lang/rust#148534 (Merge `Vec::push{,_mut}_within_capacity`)

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

Author: bors

src/lib.rs

@@ -13,9 +13,6 @@
  * TODO(antoyo): remove the patches.
  */
 
-#![allow(internal_features)]
-#![doc(rust_logo)]
-#![feature(rustdoc_internals)]
 #![feature(rustc_private)]
 #![recursion_limit = "256"]
 #![warn(rust_2018_idioms)]