docs: add Rust logo to more compiler crates

c6e6ecb added it to some of the
compiler's crates, but avoided adding it to all of them to reduce
bit-rot. This commit adds to more.

Author: notriddle

compiler/rustc_abi/src/lib.rs

@@ -1,5 +1,7 @@
 #![cfg_attr(feature = "nightly", feature(step_trait))]
 #![cfg_attr(feature = "nightly", allow(internal_features))]
+#![cfg_attr(all(not(bootstrap), feature = "nightly"), doc(rust_logo))]
+#![cfg_attr(all(not(bootstrap), feature = "nightly"), feature(rustdoc_internals))]
 
 use std::fmt;
 use std::num::{NonZeroUsize, ParseIntError};

compiler/rustc_ast_lowering/src/lib.rs

@@ -30,6 +30,9 @@
 //! get confused if the spans from leaf AST nodes occur in multiple places
 //! in the HIR, especially for multiple identifiers.
 
+#![cfg_attr(not(bootstrap), allow(internal_features))]
+#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
+#![cfg_attr(not(bootstrap), doc(rust_logo))]
 #![feature(box_patterns)]
 #![feature(let_chains)]
 #![feature(never_type)]

compiler/rustc_ast_passes/src/lib.rs

@@ -4,6 +4,9 @@
 //!
 //! The crate also contains other misc AST visitors, e.g. `node_count` and `show_span`.
 
+#![cfg_attr(not(bootstrap), allow(internal_features))]
+#![cfg_attr(not(bootstrap), doc(rust_logo))]
+#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
 #![feature(box_patterns)]
 #![feature(if_let_guard)]
 #![feature(iter_is_partitioned)]

compiler/rustc_ast_pretty/src/lib.rs

@@ -1,3 +1,6 @@
+#![cfg_attr(not(bootstrap), allow(internal_features))]
+#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
+#![cfg_attr(not(bootstrap), doc(rust_logo))]
 #![deny(rustc::untranslatable_diagnostic)]
 #![deny(rustc::diagnostic_outside_of_impl)]
 #![feature(associated_type_bounds)]

compiler/rustc_attr/src/lib.rs

@@ -4,6 +4,9 @@
 //! The goal is to move the definition of `MetaItem` and things that don't need to be in `syntax`
 //! to this crate.
 
+#![cfg_attr(not(bootstrap), allow(internal_features))]
+#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
+#![cfg_attr(not(bootstrap), doc(rust_logo))]
 #![feature(let_chains)]
 #![deny(rustc::untranslatable_diagnostic)]
 #![deny(rustc::diagnostic_outside_of_impl)]

compiler/rustc_baked_icu_data/src/lib.rs

@@ -19,6 +19,10 @@
 //! -k list/and@1 fallback/likelysubtags@1 fallback/parents@1 fallback/supplement/co@1 \
 //! --cldr-tag latest --icuexport-tag latest -o src/data
 //! ```
+
+#![cfg_attr(not(bootstrap), allow(internal_features))]
+#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
+#![cfg_attr(not(bootstrap), doc(rust_logo))]
 #![allow(elided_lifetimes_in_paths)]
 
 mod data {

compiler/rustc_borrowck/src/lib.rs

@@ -1,5 +1,8 @@
 //! This query borrow-checks the MIR to (further) ensure it is not broken.
 
+#![allow(internal_features)]
+#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
+#![cfg_attr(not(bootstrap), doc(rust_logo))]
 #![feature(associated_type_bounds)]
 #![feature(box_patterns)]
 #![feature(let_chains)]
@@ -11,7 +14,6 @@
 #![feature(trusted_step)]
 #![feature(try_blocks)]
 #![recursion_limit = "256"]
-#![allow(internal_features)]
 
 #[macro_use]
 extern crate rustc_middle;

compiler/rustc_builtin_macros/src/lib.rs

@@ -1,6 +1,9 @@
 //! This crate contains implementations of built-in macros and other code generating facilities
 //! injecting code into the crate before it is lowered to HIR.
 
+#![cfg_attr(not(bootstrap), allow(internal_features))]
+#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
+#![cfg_attr(not(bootstrap), doc(rust_logo))]
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
 #![feature(array_windows)]
 #![feature(box_patterns)]

compiler/rustc_codegen_cranelift/src/lib.rs

@@ -1,3 +1,6 @@
+#![cfg_attr(not(bootstrap), allow(internal_features))]
+#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
+#![cfg_attr(not(bootstrap), doc(rust_logo))]
 #![feature(rustc_private)]
 // Note: please avoid adding other feature gates where possible
 #![warn(rust_2018_idioms)]

compiler/rustc_codegen_gcc/src/lib.rs

@@ -12,6 +12,8 @@
  * TODO(antoyo): remove the patches.
  */
 
+#![cfg_attr(not(bootstrap), doc(rust_logo))]
+#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
 #![feature(
     rustc_private,
     decl_macro,