Auto merge of #106708 - JohnTitor:rollup-xcmg5yv, r=JohnTitor

Rollup of 14 pull requests

Successful merges:

 - #105194 (Add comment to cleanup_kinds)
 - #106521 (remove E0280)
 - #106628 (Remove unneeded ItemId::Primitive variant)
 - #106635 (std sync tests: better type name, clarifying comment)
 - #106642 (Add test for #106062)
 - #106645 ([RFC 2397] Initial implementation)
 - #106653 (Fix help docs for -Zallow-features)
 - #106657 (Remove myself from rust-lang/rust reviewers)
 - #106662 (specialize impl of `ToString` on `bool`)
 - #106669 (create helper function for `rustc_lint_defs::Level` and remove it's duplicated code)
 - #106671 (Change flags with a fixed default value from Option<bool> to bool)
 - #106689 (Fix invalid files array re-creation in rustdoc-gui tester)
 - #106690 (Fix scrolling for item declaration block)
 - #106698 (Add compiler-errors to some trait system notification groups)

Failed merges:

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

1 files changed, 9 insertions, 0 deletions

diff --git a/library/alloc/src/string.rs b/library/alloc/src/string.rs
index 24f1b3a1c87..3118c7189a5 100644
--- a/library/alloc/src/string.rs
+++ b/library/alloc/src/string.rs
@@ -2549,6 +2549,15 @@ impl ToString for char {
 }
 
 #[cfg(not(no_global_oom_handling))]
+#[stable(feature = "bool_to_string_specialization", since = "CURRENT_RUSTC_VERSION")]
+impl ToString for bool {
+    #[inline]
+    fn to_string(&self) -> String {
+        String::from(if *self { "true" } else { "false" })
+    }
+}
+
+#[cfg(not(no_global_oom_handling))]
 #[stable(feature = "u8_to_string_specialization", since = "1.54.0")]
 impl ToString for u8 {
     #[inline]