Auto merge of #142770 - tgross35:rollup-w74w39t, r=tgross35

Rollup of 8 pull requests

Successful merges:

 - rust-lang/rust#138291 (rewrite `optimize` attribute to use new attribute parsing infrastructure)
 - rust-lang/rust#140920 (Extract some shared code from codegen backend target feature handling)
 - rust-lang/rust#141990 (Implement send_signal for unix child processes)
 - rust-lang/rust#142668 (vec_deque/fmt/vec tests: remove static mut)
 - rust-lang/rust#142687 (Reduce uses of `hir_crate`.)
 - rust-lang/rust#142699 (Update books)
 - rust-lang/rust#142714 (add comment to `src/bootstrap/build.rs`)
 - rust-lang/rust#142753 (Update library dependencies)

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

7 files changed, 5 insertions, 7 deletions

diff --git a/src/bootstrap/build.rs b/src/bootstrap/build.rs
index e0e32d31353..d9810e899a0 100644
--- a/src/bootstrap/build.rs
+++ b/src/bootstrap/build.rs
@@ -1,6 +1,7 @@
 use std::env;
 
 fn main() {
+    // this is needed because `HOST` is only available to build scripts.
     let host = env::var("HOST").unwrap();
     println!("cargo:rerun-if-changed=build.rs");
     println!("cargo:rustc-env=BUILD_TRIPLE={host}");
diff --git a/src/doc/book b/src/doc/book
-Subproject 4433c9f0cad8460bee05ede040587f8a1fa3f1d
+Subproject 8a6d44e45b7b564eeb6bae30507e1fbac439d72
diff --git a/src/doc/reference b/src/doc/reference
-Subproject d4c66b346f4b72d29e70390a3fa3ea7d4e064db
+Subproject 50fc1628f36563958399123829c73755fa7a842
diff --git a/src/doc/rust-by-example b/src/doc/rust-by-example
-Subproject 9baa9e863116cb9524a177d5a5c475baac18928
+Subproject 05c7d8bae65f23a1837430c5a19be129d414f5e
diff --git a/src/librustdoc/core.rs b/src/librustdoc/core.rs
index 204f8decffc..d73600a4636 100644
--- a/src/librustdoc/core.rs
+++ b/src/librustdoc/core.rs
@@ -387,8 +387,6 @@ pub(crate) fn run_global_ctxt(
         ctxt.external_traits.insert(sized_trait_did, sized_trait);
     }
 
-    debug!("crate: {:?}", tcx.hir_crate(()));
-
     let mut krate = tcx.sess.time("clean_crate", || clean::krate(&mut ctxt));
 
     if krate.module.doc_value().is_empty() {
diff --git a/src/librustdoc/json/mod.rs b/src/librustdoc/json/mod.rs
index 2feadce26d0..29c63a391e2 100644
--- a/src/librustdoc/json/mod.rs
+++ b/src/librustdoc/json/mod.rs
@@ -18,7 +18,6 @@ use rustc_data_structures::fx::FxHashSet;
 use rustc_hir::def_id::{DefId, DefIdSet};
 use rustc_middle::ty::TyCtxt;
 use rustc_session::Session;
-use rustc_session::features::StabilityExt;
 use rustc_span::def_id::LOCAL_CRATE;
 use rustdoc_json_types as types;
 // It's important to use the FxHashMap from rustdoc_json_types here, instead of
@@ -148,7 +147,7 @@ fn target(sess: &rustc_session::Session) -> types::Target {
             .copied()
             .filter(|(_, stability, _)| {
                 // Describe only target features which the user can toggle
-                stability.is_toggle_permitted(sess).is_ok()
+                stability.toggle_allowed().is_ok()
             })
             .map(|(name, stability, implied_features)| {
                 types::TargetFeature {
@@ -164,7 +163,7 @@ fn target(sess: &rustc_session::Session) -> types::Target {
                             // Imply only target features which the user can toggle
                             feature_stability
                                 .get(name)
-                                .map(|stability| stability.is_toggle_permitted(sess).is_ok())
+                                .map(|stability| stability.toggle_allowed().is_ok())
                                 .unwrap_or(false)
                         })
                         .map(String::from)
diff --git a/src/rustdoc-json-types/lib.rs b/src/rustdoc-json-types/lib.rs
index 1f93895ae07..d5de43feb58 100644
--- a/src/rustdoc-json-types/lib.rs
+++ b/src/rustdoc-json-types/lib.rs
@@ -37,8 +37,8 @@ pub type FxHashMap<K, V> = HashMap<K, V>; // re-export for use in src/librustdoc
 // will instead cause conflicts. See #94591 for more. (This paragraph and the "Latest feature" line
 // are deliberately not in a doc comment, because they need not be in public docs.)
 //
-// Latest feature: Pretty printing of inline attributes changed
-pub const FORMAT_VERSION: u32 = 48;
+// Latest feature: Pretty printing of optimize attributes changed
+pub const FORMAT_VERSION: u32 = 49;
 
 /// The root of the emitted JSON blob.
 ///