4 files changed, 12 insertions, 7 deletions
diff --git a/compiler/rustc_feature/src/accepted.rs b/compiler/rustc_feature/src/accepted.rs
index e5348039edd..e2f30fb89b9 100644
--- a/compiler/rustc_feature/src/accepted.rs
+++ b/compiler/rustc_feature/src/accepted.rs
@@ -194,7 +194,7 @@ declare_features! (
     /// Allows irrefutable patterns in `if let` and `while let` statements (RFC 2086).
     (accepted, irrefutable_let_patterns, "1.33.0", Some(44495), None),
     /// Allows `#[instruction_set(_)]` attribute.
-    (accepted, isa_attribute, "CURRENT_RUSTC_VERSION", Some(74727), None),
+    (accepted, isa_attribute, "1.67.0", Some(74727), None),
     /// Allows some increased flexibility in the name resolution rules,
     /// especially around globs and shadowing (RFC 1560).
     (accepted, item_like_imports, "1.15.0", Some(35120), None),
@@ -240,7 +240,7 @@ declare_features! (
     /// Allows specifying the bundle link modifier
     (accepted, native_link_modifiers_bundle, "1.63.0", Some(81490), None),
     /// Allows specifying the verbatim link modifier
-    (accepted, native_link_modifiers_verbatim, "CURRENT_RUSTC_VERSION", Some(81490), None),
+    (accepted, native_link_modifiers_verbatim, "1.67.0", Some(81490), None),
     /// Allows specifying the whole-archive link modifier
     (accepted, native_link_modifiers_whole_archive, "1.61.0", Some(81490), None),
     /// Allows using non lexical lifetimes (RFC 2094).
diff --git a/compiler/rustc_feature/src/active.rs b/compiler/rustc_feature/src/active.rs
index a616dd70f8e..691c0955cad 100644
--- a/compiler/rustc_feature/src/active.rs
+++ b/compiler/rustc_feature/src/active.rs
@@ -374,6 +374,8 @@ declare_features! (
     (active, deprecated_safe, "1.61.0", Some(94978), None),
     /// Allows having using `suggestion` in the `#[deprecated]` attribute.
     (active, deprecated_suggestion, "1.61.0", Some(94785), None),
+    /// Controls errors in trait implementations.
+    (active, do_not_recommend, "1.67.0", Some(51992), None),
     /// Tells rustdoc to automatically generate `#[doc(cfg(...))]`.
     (active, doc_auto_cfg, "1.58.0", Some(43781), None),
     /// Allows `#[doc(cfg(...))]`.
@@ -383,7 +385,7 @@ declare_features! (
     /// Allows `#[doc(masked)]`.
     (active, doc_masked, "1.21.0", Some(44027), None),
     /// Allows `dyn* Trait` objects.
-    (incomplete, dyn_star, "1.65.0", Some(91611), None),
+    (incomplete, dyn_star, "1.65.0", Some(102425), None),
     /// Allows `X..Y` patterns.
     (active, exclusive_range_pattern, "1.11.0", Some(37854), None),
     /// Allows exhaustive pattern matching on types that contain uninhabited types.
@@ -418,7 +420,7 @@ declare_features! (
     /// Allows `impl Trait` as output type in `Fn` traits in return position of functions.
     (active, impl_trait_in_fn_trait_return, "1.64.0", Some(99697), None),
     /// Allows referencing `Self` and projections in impl-trait.
-    (active, impl_trait_projections, "CURRENT_RUSTC_VERSION", Some(103532), None),
+    (active, impl_trait_projections, "1.67.0", Some(103532), None),
     /// Allows using imported `main` function
     (active, imported_main, "1.53.0", Some(28937), None),
     /// Allows associated types in inherent impls.
@@ -505,7 +507,7 @@ declare_features! (
     /// Allows lints part of the strict provenance effort.
     (active, strict_provenance, "1.61.0", Some(95228), None),
     /// Allows string patterns to dereference values to match them.
-    (active, string_deref_patterns, "CURRENT_RUSTC_VERSION", Some(87121), None),
+    (active, string_deref_patterns, "1.67.0", Some(87121), None),
     /// Allows the use of `#[target_feature]` on safe functions.
     (active, target_feature_11, "1.45.0", Some(69098), None),
     /// Allows using `#[thread_local]` on `static` items.
diff --git a/compiler/rustc_feature/src/builtin_attrs.rs b/compiler/rustc_feature/src/builtin_attrs.rs
index 6d8e78a0f18..af56a0b2459 100644
--- a/compiler/rustc_feature/src/builtin_attrs.rs
+++ b/compiler/rustc_feature/src/builtin_attrs.rs
@@ -70,7 +70,7 @@ impl std::fmt::Debug for AttributeGate {
     fn fmt(&self, fmt: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match *self {
             Self::Gated(ref stab, name, expl, _) => {
-                write!(fmt, "Gated({:?}, {}, {})", stab, name, expl)
+                write!(fmt, "Gated({stab:?}, {name}, {expl})")
             }
             Self::Ungated => write!(fmt, "Ungated"),
         }
@@ -487,6 +487,9 @@ pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[
         experimental!(collapse_debuginfo)
     ),
 
+    // RFC 2397
+    gated!(do_not_recommend, Normal, template!(Word), WarnFollowing, experimental!(do_not_recommend)),
+
     // ==========================================================================
     // Internal attributes: Stability, deprecation, and unsafe:
     // ==========================================================================
diff --git a/compiler/rustc_feature/src/lib.rs b/compiler/rustc_feature/src/lib.rs
index bdaa0ee88eb..8e2a13a6c0a 100644
--- a/compiler/rustc_feature/src/lib.rs
+++ b/compiler/rustc_feature/src/lib.rs
@@ -120,7 +120,7 @@ fn find_lang_feature_issue(feature: Symbol) -> Option<NonZeroU32> {
             .find(|t| t.name == feature);
         match found {
             Some(found) => found.issue,
-            None => panic!("feature `{}` is not declared anywhere", feature),
+            None => panic!("feature `{feature}` is not declared anywhere"),
         }
     }
 }