Auto merge of #124521 - Mark-Simulacrum:bootstrap-bump, r=albertlarsan68

Bump bootstrap compiler to latest beta

https://forge.rust-lang.org/release/process.html#master-bootstrap-update-t-2-day-tuesday

This also cherry-picks d716d72586548963f32e5c8d57c41db0065fa6e0 from the beta branching, to continue to workaround #122758.

r? bootstrap

7 files changed, 10 insertions, 12 deletions

diff --git a/library/std/src/io/cursor.rs b/library/std/src/io/cursor.rs
index 5b782fff7e5..f6680b211c7 100644
--- a/library/std/src/io/cursor.rs
+++ b/library/std/src/io/cursor.rs
@@ -95,7 +95,7 @@ impl<T> Cursor<T> {
     /// # force_inference(&buff);
     /// ```
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_const_stable(feature = "const_io_structs", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_io_structs", since = "1.79.0")]
     pub const fn new(inner: T) -> Cursor<T> {
         Cursor { pos: 0, inner }
     }
@@ -132,7 +132,7 @@ impl<T> Cursor<T> {
     /// let reference = buff.get_ref();
     /// ```
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_const_stable(feature = "const_io_structs", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_io_structs", since = "1.79.0")]
     pub const fn get_ref(&self) -> &T {
         &self.inner
     }
@@ -178,7 +178,7 @@ impl<T> Cursor<T> {
     /// assert_eq!(buff.position(), 1);
     /// ```
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_const_stable(feature = "const_io_structs", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_io_structs", since = "1.79.0")]
     pub const fn position(&self) -> u64 {
         self.pos
     }
diff --git a/library/std/src/io/error.rs b/library/std/src/io/error.rs
index 801621c6112..f366cb8f42b 100644
--- a/library/std/src/io/error.rs
+++ b/library/std/src/io/error.rs
@@ -921,7 +921,7 @@ impl Error {
     /// assert!(io_error.raw_os_error().is_none());
     /// # }
     /// ```
-    #[stable(feature = "io_error_downcast", since = "CURRENT_RUSTC_VERSION")]
+    #[stable(feature = "io_error_downcast", since = "1.79.0")]
     pub fn downcast<E>(self) -> result::Result<E, Self>
     where
         E: error::Error + Send + Sync + 'static,
diff --git a/library/std/src/io/util.rs b/library/std/src/io/util.rs
index 266a447f06b..b4c4dffc371 100644
--- a/library/std/src/io/util.rs
+++ b/library/std/src/io/util.rs
@@ -51,7 +51,7 @@ pub struct Empty;
 /// ```
 #[must_use]
 #[stable(feature = "rust1", since = "1.0.0")]
-#[rustc_const_stable(feature = "const_io_structs", since = "CURRENT_RUSTC_VERSION")]
+#[rustc_const_stable(feature = "const_io_structs", since = "1.79.0")]
 pub const fn empty() -> Empty {
     Empty
 }
@@ -173,7 +173,7 @@ pub struct Repeat {
 /// ```
 #[must_use]
 #[stable(feature = "rust1", since = "1.0.0")]
-#[rustc_const_stable(feature = "const_io_structs", since = "CURRENT_RUSTC_VERSION")]
+#[rustc_const_stable(feature = "const_io_structs", since = "1.79.0")]
 pub const fn repeat(byte: u8) -> Repeat {
     Repeat { byte }
 }
@@ -276,7 +276,7 @@ pub struct Sink;
 /// ```
 #[must_use]
 #[stable(feature = "rust1", since = "1.0.0")]
-#[rustc_const_stable(feature = "const_io_structs", since = "CURRENT_RUSTC_VERSION")]
+#[rustc_const_stable(feature = "const_io_structs", since = "1.79.0")]
 pub const fn sink() -> Sink {
     Sink
 }
diff --git a/library/std/src/lib.rs b/library/std/src/lib.rs
index fb63445c22a..27b46b46204 100644
--- a/library/std/src/lib.rs
+++ b/library/std/src/lib.rs
@@ -224,7 +224,7 @@
             `#![no_std]` or overriding this warning by enabling this feature."
     )
 )]
-#![cfg_attr(not(bootstrap), rustc_preserve_ub_checks)]
+#![rustc_preserve_ub_checks]
 #![doc(
     html_playground_url = "https://play.rust-lang.org/",
     issue_tracker_base_url = "https://github.com/rust-lang/rust/issues/",
@@ -592,7 +592,6 @@ pub mod net;
 pub mod num;
 pub mod os;
 pub mod panic;
-#[cfg(not(bootstrap))]
 #[unstable(feature = "core_pattern_types", issue = "none")]
 pub mod pat;
 pub mod path;
diff --git a/library/std/src/num.rs b/library/std/src/num.rs
index fbe68f7e303..8910cdea7c0 100644
--- a/library/std/src/num.rs
+++ b/library/std/src/num.rs
@@ -23,7 +23,7 @@ pub use core::num::{FpCategory, ParseFloatError, ParseIntError, TryFromIntError}
 )]
 pub use core::num::ZeroablePrimitive;
 
-#[stable(feature = "generic_nonzero", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "generic_nonzero", since = "1.79.0")]
 pub use core::num::NonZero;
 
 #[stable(feature = "signed_nonzero", since = "1.34.0")]
diff --git a/library/std/src/path.rs b/library/std/src/path.rs
index 85355435100..79d800ff072 100644
--- a/library/std/src/path.rs
+++ b/library/std/src/path.rs
@@ -3374,7 +3374,7 @@ impl Error for StripPrefixError {
 ///
 /// [posix-semantics]: https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html#tag_04_13
 /// [windows-path]: https://docs.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-getfullpathnamew
-#[stable(feature = "absolute_path", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "absolute_path", since = "1.79.0")]
 pub fn absolute<P: AsRef<Path>>(path: P) -> io::Result<PathBuf> {
     let path = path.as_ref();
     if path.as_os_str().is_empty() {
diff --git a/library/std/src/prelude/common.rs b/library/std/src/prelude/common.rs
index f61e04e02b6..01936734d75 100644
--- a/library/std/src/prelude/common.rs
+++ b/library/std/src/prelude/common.rs
@@ -84,7 +84,6 @@ pub use core::prelude::v1::cfg_eval;
 )]
 pub use core::prelude::v1::type_ascribe;
 
-#[cfg(not(bootstrap))]
 // Do not `doc(no_inline)` either.
 #[unstable(
     feature = "deref_patterns",