5 files changed, 23 insertions, 8 deletions
diff --git a/compiler/rustc_feature/src/accepted.rs b/compiler/rustc_feature/src/accepted.rs
index e064e87a5..d304d38e1 100644
--- a/compiler/rustc_feature/src/accepted.rs
+++ b/compiler/rustc_feature/src/accepted.rs
@@ -90,6 +90,8 @@ declare_features! (
     (accepted, clone_closures, "1.26.0", Some(44490), None),
     /// Allows coercing non capturing closures to function pointers.
     (accepted, closure_to_fn_coercion, "1.19.0", Some(39817), None),
+    /// Allows using `cmpxchg16b` from `core::arch::x86_64`.
+    (accepted, cmpxchg16b_target_feature, "1.69.0", Some(44839), None),
     /// Allows usage of the `compile_error!` macro.
     (accepted, compile_error, "1.20.0", Some(40872), None),
     /// Allows `impl Trait` in function return types.
diff --git a/compiler/rustc_feature/src/active.rs b/compiler/rustc_feature/src/active.rs
index b5256043e..baea5968e 100644
--- a/compiler/rustc_feature/src/active.rs
+++ b/compiler/rustc_feature/src/active.rs
@@ -160,6 +160,8 @@ declare_features! (
     (active, intrinsics, "1.0.0", None, None),
     /// Allows using `#[lang = ".."]` attribute for linking items to special compiler logic.
     (active, lang_items, "1.0.0", None, None),
+    /// Allows the `multiple_supertrait_upcastable` lint.
+    (active, multiple_supertrait_upcastable, "1.69.0", None, None),
     /// Allows using `#[omit_gdb_pretty_printer_section]`.
     (active, omit_gdb_pretty_printer_section, "1.5.0", None, None),
     /// Allows using `#[prelude_import]` on glob `use` items.
@@ -213,6 +215,8 @@ declare_features! (
     (active, linkage, "1.0.0", Some(29603), None),
     /// Allows declaring with `#![needs_panic_runtime]` that a panic runtime is needed.
     (active, needs_panic_runtime, "1.10.0", Some(32837), None),
+    /// Allows using `+bundled,+whole-archive` native libs.
+    (active, packed_bundled_libs, "1.69.0", Some(108081), None),
     /// Allows using the `#![panic_runtime]` attribute.
     (active, panic_runtime, "1.10.0", Some(32837), None),
     /// Allows using `#[rustc_allow_const_fn_unstable]`.
@@ -252,7 +256,6 @@ declare_features! (
     (active, arm_target_feature, "1.27.0", Some(44839), None),
     (active, avx512_target_feature, "1.27.0", Some(44839), None),
     (active, bpf_target_feature, "1.54.0", Some(44839), None),
-    (active, cmpxchg16b_target_feature, "1.32.0", Some(44839), None),
     (active, ermsb_target_feature, "1.49.0", Some(44839), None),
     (active, hexagon_target_feature, "1.27.0", Some(44839), None),
     (active, mips_target_feature, "1.27.0", Some(44839), None),
@@ -313,8 +316,6 @@ declare_features! (
     (active, c_unwind, "1.52.0", Some(74990), None),
     /// Allows using C-variadics.
     (active, c_variadic, "1.34.0", Some(44930), None),
-    /// Allows capturing disjoint fields in a closure/generator (RFC 2229).
-    (incomplete, capture_disjoint_fields, "1.49.0", Some(53488), None),
     /// Allows the use of `#[cfg(sanitize = "option")]`; set when -Zsanitizer is used.
     (active, cfg_sanitize, "1.41.0", Some(39699), None),
     /// Allows `cfg(target_abi = "...")`.
@@ -469,6 +470,8 @@ declare_features! (
     (active, no_sanitize, "1.42.0", Some(39699), None),
     /// Allows using the `non_exhaustive_omitted_patterns` lint.
     (active, non_exhaustive_omitted_patterns_lint, "1.57.0", Some(89554), None),
+    /// Allows `for<T>` binders in where-clauses
+    (incomplete, non_lifetime_binders, "1.69.0", Some(108185), None),
     /// Allows making `dyn Trait` well-formed even if `Trait` is not object safe.
     /// In that case, `dyn Trait: Trait` does not hold. Moreover, coercions and
     /// casts in safe Rust to `dyn Trait` for such a `Trait` is also forbidden.
diff --git a/compiler/rustc_feature/src/builtin_attrs.rs b/compiler/rustc_feature/src/builtin_attrs.rs
index af56a0b24..493a9cd89 100644
--- a/compiler/rustc_feature/src/builtin_attrs.rs
+++ b/compiler/rustc_feature/src/builtin_attrs.rs
@@ -414,7 +414,10 @@ pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[
     ),
 
     // Linking:
-    gated!(naked, Normal, template!(Word), WarnFollowing, @only_local: true, naked_functions, experimental!(naked)),
+    gated!(
+        naked, Normal, template!(Word), WarnFollowing, @only_local: true,
+        naked_functions, experimental!(naked)
+    ),
 
     // Plugins:
     BuiltinAttribute {
@@ -441,7 +444,8 @@ pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[
     ),
     // RFC #1268
     gated!(
-        marker, Normal, template!(Word), WarnFollowing, marker_trait_attr, experimental!(marker)
+        marker, Normal, template!(Word), WarnFollowing, @only_local: true,
+        marker_trait_attr, experimental!(marker)
     ),
     gated!(
         thread_local, Normal, template!(Word), WarnFollowing,
@@ -682,8 +686,7 @@ pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[
         "language items are subject to change",
     ),
     rustc_attr!(
-        rustc_pass_by_value, Normal,
-        template!(Word), ErrorFollowing,
+        rustc_pass_by_value, Normal, template!(Word), ErrorFollowing,
         "#[rustc_pass_by_value] is used to mark types that must be passed by value instead of reference."
     ),
     rustc_attr!(
@@ -691,6 +694,10 @@ pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[
         "#![rustc_coherence_is_core] allows inherent methods on builtin types, only intended to be used in `core`."
     ),
     rustc_attr!(
+        rustc_coinductive, AttributeType::Normal, template!(Word), WarnFollowing, @only_local: true,
+        "#![rustc_coinductive] changes a trait to be coinductive, allowing cycles in the trait solver."
+    ),
+    rustc_attr!(
         rustc_allow_incoherent_impl, AttributeType::Normal, template!(Word), ErrorFollowing, @only_local: true,
         "#[rustc_allow_incoherent_impl] has to be added to all impl items of an incoherent inherent impl."
     ),
diff --git a/compiler/rustc_feature/src/lib.rs b/compiler/rustc_feature/src/lib.rs
index 8e2a13a6c..93d167163 100644
--- a/compiler/rustc_feature/src/lib.rs
+++ b/compiler/rustc_feature/src/lib.rs
@@ -83,7 +83,8 @@ impl UnstableFeatures {
     /// Otherwise, only `RUSTC_BOOTSTRAP=1` will work.
     pub fn from_environment(krate: Option<&str>) -> Self {
         // `true` if this is a feature-staged build, i.e., on the beta or stable channel.
-        let disable_unstable_features = option_env!("CFG_DISABLE_UNSTABLE_FEATURES").is_some();
+        let disable_unstable_features =
+            option_env!("CFG_DISABLE_UNSTABLE_FEATURES").map(|s| s != "0").unwrap_or(false);
         // Returns whether `krate` should be counted as unstable
         let is_unstable_crate = |var: &str| {
             krate.map_or(false, |name| var.split(',').any(|new_krate| new_krate == name))
diff --git a/compiler/rustc_feature/src/removed.rs b/compiler/rustc_feature/src/removed.rs
index 79a12801d..04d4f6cb1 100644
--- a/compiler/rustc_feature/src/removed.rs
+++ b/compiler/rustc_feature/src/removed.rs
@@ -52,6 +52,8 @@ declare_features! (
     (removed, allow_fail, "1.19.0", Some(46488), None, Some("removed due to no clear use cases")),
     (removed, await_macro, "1.38.0", Some(50547), None,
      Some("subsumed by `.await` syntax")),
+    /// Allows capturing disjoint fields in a closure/generator (RFC 2229).
+    (removed, capture_disjoint_fields, "1.49.0", Some(53488), None, Some("stabilized in Rust 2021")),
     /// Allows comparing raw pointers during const eval.
     (removed, const_compare_raw_pointers, "1.46.0", Some(53020), None,
      Some("cannot be allowed in const eval in any meaningful way")),