diff --git a/compiler/rustc_feature/src/removed.rs b/compiler/rustc_feature/src/removed.rs
index 7e174c465d59a..7b838cf0de22a 100644
--- a/compiler/rustc_feature/src/removed.rs
+++ b/compiler/rustc_feature/src/removed.rs
@@ -54,7 +54,7 @@ declare_features! (
 
     /// Allows using the `amdgpu-kernel` ABI.
     (removed, abi_amdgpu_kernel, "1.77.0", Some(51575), None, 120495),
-    (removed, abi_c_cmse_nonsecure_call, "CURRENT_RUSTC_VERSION", Some(81391), Some("renamed to abi_cmse_nonsecure_call"), 142146),
+    (removed, abi_c_cmse_nonsecure_call, "1.90.0", Some(81391), Some("renamed to abi_cmse_nonsecure_call"), 142146),
     (removed, advanced_slice_patterns, "1.42.0", Some(62254),
      Some("merged into `#![feature(slice_patterns)]`"), 67712),
     (removed, allocator, "1.0.0", None, None),
@@ -298,7 +298,7 @@ declare_features! (
     // FIXME(#141617): we should have a better way to track removed library features, but we reuse
     // the infrastructure here so users still get hints. The symbols used here can be remove from
     // `symbol.rs` when that happens.
-    (removed, concat_idents, "CURRENT_RUSTC_VERSION", Some(29599),
+    (removed, concat_idents, "1.90.0", Some(29599),
      Some("use the `${concat(..)}` metavariable expression instead"), 142704),
     // -------------------------------------------------------------------------
     // feature-group-end: removed library features
diff --git a/compiler/rustc_feature/src/unstable.rs b/compiler/rustc_feature/src/unstable.rs
index e985e04ba3307..6b220faa66ac4 100644
--- a/compiler/rustc_feature/src/unstable.rs
+++ b/compiler/rustc_feature/src/unstable.rs
@@ -354,7 +354,7 @@ declare_features! (
     /// Allows `extern "avr-interrupt" fn()` and `extern "avr-non-blocking-interrupt" fn()`.
     (unstable, abi_avr_interrupt, "1.45.0", Some(69664)),
     /// Allows `extern "cmse-nonsecure-call" fn()`.
-    (unstable, abi_cmse_nonsecure_call, "CURRENT_RUSTC_VERSION", Some(81391)),
+    (unstable, abi_cmse_nonsecure_call, "1.90.0", Some(81391)),
     /// Allows `extern "custom" fn()`.
     (unstable, abi_custom, "1.89.0", Some(140829)),
     /// Allows `extern "gpu-kernel" fn()`.
@@ -554,7 +554,7 @@ declare_features! (
     /// to pass custom arguments to the linker.
     (unstable, link_arg_attribute, "1.76.0", Some(99427)),
     /// Allows fused `loop`/`match` for direct intraprocedural jumps.
-    (incomplete, loop_match, "CURRENT_RUSTC_VERSION", Some(132306)),
+    (incomplete, loop_match, "1.90.0", Some(132306)),
     /// Give access to additional metadata about declarative macro meta-variables.
     (unstable, macro_metavar_expr, "1.61.0", Some(83527)),
     /// Provides a way to concatenate identifiers using metavariable expressions.
diff --git a/library/alloc/src/ffi/c_str.rs b/library/alloc/src/ffi/c_str.rs
index 93bdad7538007..fe6c89a30949d 100644
--- a/library/alloc/src/ffi/c_str.rs
+++ b/library/alloc/src/ffi/c_str.rs
@@ -1099,7 +1099,7 @@ impl From<&CStr> for CString {
     }
 }
 
-#[stable(feature = "c_string_eq_c_str", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "c_string_eq_c_str", since = "1.90.0")]
 impl PartialEq<CStr> for CString {
     #[inline]
     fn eq(&self, other: &CStr) -> bool {
@@ -1112,7 +1112,7 @@ impl PartialEq<CStr> for CString {
     }
 }
 
-#[stable(feature = "c_string_eq_c_str", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "c_string_eq_c_str", since = "1.90.0")]
 impl PartialEq<&CStr> for CString {
     #[inline]
     fn eq(&self, other: &&CStr) -> bool {
@@ -1126,7 +1126,7 @@ impl PartialEq<&CStr> for CString {
 }
 
 #[cfg(not(no_global_oom_handling))]
-#[stable(feature = "c_string_eq_c_str", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "c_string_eq_c_str", since = "1.90.0")]
 impl PartialEq<Cow<'_, CStr>> for CString {
     #[inline]
     fn eq(&self, other: &Cow<'_, CStr>) -> bool {
@@ -1221,7 +1221,7 @@ impl CStr {
     }
 }
 
-#[stable(feature = "c_string_eq_c_str", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "c_string_eq_c_str", since = "1.90.0")]
 impl PartialEq<CString> for CStr {
     #[inline]
     fn eq(&self, other: &CString) -> bool {
@@ -1235,7 +1235,7 @@ impl PartialEq<CString> for CStr {
 }
 
 #[cfg(not(no_global_oom_handling))]
-#[stable(feature = "c_string_eq_c_str", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "c_string_eq_c_str", since = "1.90.0")]
 impl PartialEq<Cow<'_, Self>> for CStr {
     #[inline]
     fn eq(&self, other: &Cow<'_, Self>) -> bool {
@@ -1249,7 +1249,7 @@ impl PartialEq<Cow<'_, Self>> for CStr {
 }
 
 #[cfg(not(no_global_oom_handling))]
-#[stable(feature = "c_string_eq_c_str", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "c_string_eq_c_str", since = "1.90.0")]
 impl PartialEq<CStr> for Cow<'_, CStr> {
     #[inline]
     fn eq(&self, other: &CStr) -> bool {
@@ -1263,7 +1263,7 @@ impl PartialEq<CStr> for Cow<'_, CStr> {
 }
 
 #[cfg(not(no_global_oom_handling))]
-#[stable(feature = "c_string_eq_c_str", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "c_string_eq_c_str", since = "1.90.0")]
 impl PartialEq<&CStr> for Cow<'_, CStr> {
     #[inline]
     fn eq(&self, other: &&CStr) -> bool {
@@ -1277,7 +1277,7 @@ impl PartialEq<&CStr> for Cow<'_, CStr> {
 }
 
 #[cfg(not(no_global_oom_handling))]
-#[stable(feature = "c_string_eq_c_str", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "c_string_eq_c_str", since = "1.90.0")]
 impl PartialEq<CString> for Cow<'_, CStr> {
     #[inline]
     fn eq(&self, other: &CString) -> bool {
diff --git a/library/core/src/ffi/c_str.rs b/library/core/src/ffi/c_str.rs
index c43f3834630f0..e6b599fafcff8 100644
--- a/library/core/src/ffi/c_str.rs
+++ b/library/core/src/ffi/c_str.rs
@@ -652,7 +652,7 @@ impl CStr {
     }
 }
 
-#[stable(feature = "c_string_eq_c_str", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "c_string_eq_c_str", since = "1.90.0")]
 impl PartialEq<&Self> for CStr {
     #[inline]
     fn eq(&self, other: &&Self) -> bool {
diff --git a/library/core/src/num/uint_macros.rs b/library/core/src/num/uint_macros.rs
index 584cd60fbe5cc..f838ac0918bac 100644
--- a/library/core/src/num/uint_macros.rs
+++ b/library/core/src/num/uint_macros.rs
@@ -790,8 +790,8 @@ macro_rules! uint_impl {
         #[doc = concat!("assert_eq!(1", stringify!($SelfT), ".checked_sub_signed(-2), Some(3));")]
         #[doc = concat!("assert_eq!((", stringify!($SelfT), "::MAX - 2).checked_sub_signed(-4), None);")]
         /// ```
-        #[stable(feature = "mixed_integer_ops_unsigned_sub", since = "CURRENT_RUSTC_VERSION")]
-        #[rustc_const_stable(feature = "mixed_integer_ops_unsigned_sub", since = "CURRENT_RUSTC_VERSION")]
+        #[stable(feature = "mixed_integer_ops_unsigned_sub", since = "1.90.0")]
+        #[rustc_const_stable(feature = "mixed_integer_ops_unsigned_sub", since = "1.90.0")]
         #[must_use = "this returns the result of the operation, \
                       without modifying the original"]
         #[inline]
@@ -1974,8 +1974,8 @@ macro_rules! uint_impl {
         #[doc = concat!("assert_eq!(1", stringify!($SelfT), ".saturating_sub_signed(-2), 3);")]
         #[doc = concat!("assert_eq!((", stringify!($SelfT), "::MAX - 2).saturating_sub_signed(-4), ", stringify!($SelfT), "::MAX);")]
         /// ```
-        #[stable(feature = "mixed_integer_ops_unsigned_sub", since = "CURRENT_RUSTC_VERSION")]
-        #[rustc_const_stable(feature = "mixed_integer_ops_unsigned_sub", since = "CURRENT_RUSTC_VERSION")]
+        #[stable(feature = "mixed_integer_ops_unsigned_sub", since = "1.90.0")]
+        #[rustc_const_stable(feature = "mixed_integer_ops_unsigned_sub", since = "1.90.0")]
         #[must_use = "this returns the result of the operation, \
                       without modifying the original"]
         #[inline]
@@ -2122,8 +2122,8 @@ macro_rules! uint_impl {
         #[doc = concat!("assert_eq!(1", stringify!($SelfT), ".wrapping_sub_signed(-2), 3);")]
         #[doc = concat!("assert_eq!((", stringify!($SelfT), "::MAX - 2).wrapping_sub_signed(-4), 1);")]
         /// ```
-        #[stable(feature = "mixed_integer_ops_unsigned_sub", since = "CURRENT_RUSTC_VERSION")]
-        #[rustc_const_stable(feature = "mixed_integer_ops_unsigned_sub", since = "CURRENT_RUSTC_VERSION")]
+        #[stable(feature = "mixed_integer_ops_unsigned_sub", since = "1.90.0")]
+        #[rustc_const_stable(feature = "mixed_integer_ops_unsigned_sub", since = "1.90.0")]
         #[must_use = "this returns the result of the operation, \
                       without modifying the original"]
         #[inline]
@@ -2581,8 +2581,8 @@ macro_rules! uint_impl {
         #[doc = concat!("assert_eq!(1", stringify!($SelfT), ".overflowing_sub_signed(-2), (3, false));")]
         #[doc = concat!("assert_eq!((", stringify!($SelfT), "::MAX - 2).overflowing_sub_signed(-4), (1, true));")]
         /// ```
-        #[stable(feature = "mixed_integer_ops_unsigned_sub", since = "CURRENT_RUSTC_VERSION")]
-        #[rustc_const_stable(feature = "mixed_integer_ops_unsigned_sub", since = "CURRENT_RUSTC_VERSION")]
+        #[stable(feature = "mixed_integer_ops_unsigned_sub", since = "1.90.0")]
+        #[rustc_const_stable(feature = "mixed_integer_ops_unsigned_sub", since = "1.90.0")]
         #[must_use = "this returns the result of the operation, \
                       without modifying the original"]
         #[inline]
diff --git a/library/core/src/slice/mod.rs b/library/core/src/slice/mod.rs
index 14042997bc2c3..3c41582f3e8cf 100644
--- a/library/core/src/slice/mod.rs
+++ b/library/core/src/slice/mod.rs
@@ -969,7 +969,7 @@ impl<T> [T] {
     /// assert!(v == [3, 2, 1]);
     /// ```
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_const_stable(feature = "const_slice_reverse", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_slice_reverse", since = "1.90.0")]
     #[inline]
     pub const fn reverse(&mut self) {
         let half_len = self.len() / 2;
diff --git a/library/std/src/num/f32.rs b/library/std/src/num/f32.rs
index 2bff73add33d6..5dee68ad909e2 100644
--- a/library/std/src/num/f32.rs
+++ b/library/std/src/num/f32.rs
@@ -44,7 +44,7 @@ impl f32 {
     #[rustc_allow_incoherent_impl]
     #[must_use = "method returns a new number and does not mutate the original value"]
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_const_stable(feature = "const_float_round_methods", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_float_round_methods", since = "1.90.0")]
     #[inline]
     pub const fn floor(self) -> f32 {
         core::f32::math::floor(self)
@@ -67,7 +67,7 @@ impl f32 {
     #[rustc_allow_incoherent_impl]
     #[must_use = "method returns a new number and does not mutate the original value"]
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_const_stable(feature = "const_float_round_methods", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_float_round_methods", since = "1.90.0")]
     #[inline]
     pub const fn ceil(self) -> f32 {
         core::f32::math::ceil(self)
@@ -96,7 +96,7 @@ impl f32 {
     #[rustc_allow_incoherent_impl]
     #[must_use = "method returns a new number and does not mutate the original value"]
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_const_stable(feature = "const_float_round_methods", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_float_round_methods", since = "1.90.0")]
     #[inline]
     pub const fn round(self) -> f32 {
         core::f32::math::round(self)
@@ -123,7 +123,7 @@ impl f32 {
     #[rustc_allow_incoherent_impl]
     #[must_use = "method returns a new number and does not mutate the original value"]
     #[stable(feature = "round_ties_even", since = "1.77.0")]
-    #[rustc_const_stable(feature = "const_float_round_methods", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_float_round_methods", since = "1.90.0")]
     #[inline]
     pub const fn round_ties_even(self) -> f32 {
         core::f32::math::round_ties_even(self)
@@ -149,7 +149,7 @@ impl f32 {
     #[rustc_allow_incoherent_impl]
     #[must_use = "method returns a new number and does not mutate the original value"]
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_const_stable(feature = "const_float_round_methods", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_float_round_methods", since = "1.90.0")]
     #[inline]
     pub const fn trunc(self) -> f32 {
         core::f32::math::trunc(self)
@@ -173,7 +173,7 @@ impl f32 {
     #[rustc_allow_incoherent_impl]
     #[must_use = "method returns a new number and does not mutate the original value"]
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_const_stable(feature = "const_float_round_methods", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_float_round_methods", since = "1.90.0")]
     #[inline]
     pub const fn fract(self) -> f32 {
         core::f32::math::fract(self)
diff --git a/library/std/src/num/f64.rs b/library/std/src/num/f64.rs
index b71e319f4074f..3ec80f68bdb2f 100644
--- a/library/std/src/num/f64.rs
+++ b/library/std/src/num/f64.rs
@@ -44,7 +44,7 @@ impl f64 {
     #[rustc_allow_incoherent_impl]
     #[must_use = "method returns a new number and does not mutate the original value"]
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_const_stable(feature = "const_float_round_methods", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_float_round_methods", since = "1.90.0")]
     #[inline]
     pub const fn floor(self) -> f64 {
         core::f64::math::floor(self)
@@ -67,7 +67,7 @@ impl f64 {
     #[rustc_allow_incoherent_impl]
     #[must_use = "method returns a new number and does not mutate the original value"]
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_const_stable(feature = "const_float_round_methods", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_float_round_methods", since = "1.90.0")]
     #[inline]
     pub const fn ceil(self) -> f64 {
         core::f64::math::ceil(self)
@@ -96,7 +96,7 @@ impl f64 {
     #[rustc_allow_incoherent_impl]
     #[must_use = "method returns a new number and does not mutate the original value"]
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_const_stable(feature = "const_float_round_methods", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_float_round_methods", since = "1.90.0")]
     #[inline]
     pub const fn round(self) -> f64 {
         core::f64::math::round(self)
@@ -123,7 +123,7 @@ impl f64 {
     #[rustc_allow_incoherent_impl]
     #[must_use = "method returns a new number and does not mutate the original value"]
     #[stable(feature = "round_ties_even", since = "1.77.0")]
-    #[rustc_const_stable(feature = "const_float_round_methods", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_float_round_methods", since = "1.90.0")]
     #[inline]
     pub const fn round_ties_even(self) -> f64 {
         core::f64::math::round_ties_even(self)
@@ -149,7 +149,7 @@ impl f64 {
     #[rustc_allow_incoherent_impl]
     #[must_use = "method returns a new number and does not mutate the original value"]
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_const_stable(feature = "const_float_round_methods", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_float_round_methods", since = "1.90.0")]
     #[inline]
     pub const fn trunc(self) -> f64 {
         core::f64::math::trunc(self)
@@ -173,7 +173,7 @@ impl f64 {
     #[rustc_allow_incoherent_impl]
     #[must_use = "method returns a new number and does not mutate the original value"]
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_const_stable(feature = "const_float_round_methods", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_float_round_methods", since = "1.90.0")]
     #[inline]
     pub const fn fract(self) -> f64 {
         core::f64::math::fract(self)
diff --git a/src/ci/channel b/src/ci/channel
index bf867e0ae5b6c..65b2df87f7df3 100644
--- a/src/ci/channel
+++ b/src/ci/channel
@@ -1 +1 @@
-nightly
+beta