Rollup merge of #148226 - cuviper:bootstrap-update, r=Mark-Simulacrum

Bootstrap update

- Update CURRENT_RUSTC_VERSION post-bump
- Bump stage0 to 1.92.0-beta.1
- Update `#[cfg(bootstrap)]`

compiler/rustc_feature/src/removed.rs

@@ -102,9 +102,9 @@ declare_features! (
     /// Allows deriving traits as per `SmartPointer` specification
     (removed, derive_smart_pointer, "1.84.0", Some(123430), Some("replaced by `CoercePointee`"), 131284),
     /// Tells rustdoc to automatically generate `#[doc(cfg(...))]`.
-    (removed, doc_auto_cfg, "CURRENT_RUSTC_VERSION", Some(43781), Some("merged into `doc_cfg`"), 138907),
+    (removed, doc_auto_cfg, "1.92.0", Some(43781), Some("merged into `doc_cfg`"), 138907),
     /// Allows `#[doc(cfg_hide(...))]`.
-    (removed, doc_cfg_hide, "CURRENT_RUSTC_VERSION", Some(43781), Some("merged into `doc_cfg`"), 138907),
+    (removed, doc_cfg_hide, "1.92.0", Some(43781), Some("merged into `doc_cfg`"), 138907),
     /// Allows using `#[doc(keyword = "...")]`.
     (removed, doc_keyword, "1.58.0", Some(51315),
      Some("merged into `#![feature(rustdoc_internals)]`"), 90420),

compiler/rustc_index/src/idx.rs

@@ -135,7 +135,7 @@ impl<I: Idx, T> IntoSliceIdx<I, [T]> for core::range::RangeInclusive<I> {
     }
 }
 
-#[cfg(all(feature = "nightly", not(bootstrap)))]
+#[cfg(feature = "nightly")]
 impl<I: Idx, T> IntoSliceIdx<I, [T]> for core::range::RangeToInclusive<I> {
     type Output = core::range::RangeToInclusive<usize>;
     #[inline]

compiler/rustc_index/src/lib.rs

@@ -1,6 +1,5 @@
 // tidy-alphabetical-start
 #![cfg_attr(all(feature = "nightly", test), feature(stmt_expr_attributes))]
-#![cfg_attr(bootstrap, feature(new_zeroed_alloc))]
 #![cfg_attr(feature = "nightly", allow(internal_features))]
 #![cfg_attr(feature = "nightly", feature(extend_one, step_trait, test))]
 #![cfg_attr(feature = "nightly", feature(new_range_api))]