Auto merge of #113540 - Mark-Simulacrum:beta-backport, r=Mark-Simulacrum

[beta] promote 1.72

r? `@Mark-Simulacrum`

compiler/rustc_feature/src/active.rs

@@ -392,13 +392,13 @@ declare_features! (
     /// Allows `dyn* Trait` objects.
     (incomplete, dyn_star, "1.65.0", Some(102425), None),
     // Uses generic effect parameters for ~const bounds
-    (active, effects, "CURRENT_RUSTC_VERSION", Some(102090), None),
+    (active, effects, "1.72.0", Some(102090), 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.
     (active, exhaustive_patterns, "1.13.0", Some(51085), None),
     /// Allows explicit tail calls via `become` expression.
-    (incomplete, explicit_tail_calls, "CURRENT_RUSTC_VERSION", Some(112788), None),
+    (incomplete, explicit_tail_calls, "1.72.0", Some(112788), None),
     /// Allows using `efiapi`, `sysv64` and `win64` as calling convention
     /// for functions with varargs.
     (active, extended_varargs_abi_support, "1.65.0", Some(100189), None),
@@ -445,7 +445,7 @@ declare_features! (
     // Allows setting the threshold for the `large_assignments` lint.
     (active, large_assignments, "1.52.0", Some(83518), None),
     /// Allow to have type alias types for inter-crate use.
-    (active, lazy_type_alias, "CURRENT_RUSTC_VERSION", Some(112792), None),
+    (active, lazy_type_alias, "1.72.0", Some(112792), None),
     /// Allows `if/while p && let q = r && ...` chains.
     (active, let_chains, "1.37.0", Some(53667), None),
     /// Allows using `reason` in lint attributes and the `#[expect(lint)]` lint check.
@@ -546,7 +546,7 @@ declare_features! (
     /// not changed from prior instances of the same struct (RFC #2528)
     (active, type_changing_struct_update, "1.58.0", Some(86555), None),
     /// Allows using type privacy lints (`private_interfaces`, `private_bounds`, `unnameable_types`).
-    (active, type_privacy_lints, "CURRENT_RUSTC_VERSION", Some(48054), None),
+    (active, type_privacy_lints, "1.72.0", Some(48054), None),
     /// Enables rustc to generate code that instructs libstd to NOT ignore SIGPIPE.
     (active, unix_sigpipe, "1.65.0", Some(97889), None),
     /// Allows unsized fn parameters.

library/alloc/src/string.rs

@@ -1873,7 +1873,7 @@ impl String {
     /// let static_ref: &'static mut str = x.leak();
     /// assert_eq!(static_ref, "bucket");
     /// ```
-    #[stable(feature = "string_leak", since = "CURRENT_RUSTC_VERSION")]
+    #[stable(feature = "string_leak", since = "1.72.0")]
     #[inline]
     pub fn leak<'a>(self) -> &'a mut str {
         let slice = self.vec.leak();

library/core/src/ffi/c_str.rs

@@ -377,7 +377,7 @@ impl CStr {
     /// assert!(cstr.is_err());
     /// ```
     #[stable(feature = "cstr_from_bytes", since = "1.10.0")]
-    #[rustc_const_stable(feature = "const_cstr_methods", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_cstr_methods", since = "1.72.0")]
     pub const fn from_bytes_with_nul(bytes: &[u8]) -> Result<&Self, FromBytesWithNulError> {
         let nul_pos = memchr::memchr(0, bytes);
         match nul_pos {
@@ -561,7 +561,7 @@ impl CStr {
     #[must_use = "this returns the result of the operation, \
                   without modifying the original"]
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_const_stable(feature = "const_cstr_methods", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_cstr_methods", since = "1.72.0")]
     pub const fn to_bytes(&self) -> &[u8] {
         let bytes = self.to_bytes_with_nul();
         // FIXME(const-hack) replace with range index
@@ -590,7 +590,7 @@ impl CStr {
     #[must_use = "this returns the result of the operation, \
                   without modifying the original"]
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_const_stable(feature = "const_cstr_methods", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_cstr_methods", since = "1.72.0")]
     pub const fn to_bytes_with_nul(&self) -> &[u8] {
         // SAFETY: Transmuting a slice of `c_char`s to a slice of `u8`s
         // is safe on all supported targets.
@@ -614,7 +614,7 @@ impl CStr {
     /// assert_eq!(cstr.to_str(), Ok("foo"));
     /// ```
     #[stable(feature = "cstr_to_str", since = "1.4.0")]
-    #[rustc_const_stable(feature = "const_cstr_methods", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_cstr_methods", since = "1.72.0")]
     pub const fn to_str(&self) -> Result<&str, str::Utf8Error> {
         // N.B., when `CStr` is changed to perform the length check in `.to_bytes()`
         // instead of in `from_ptr()`, it may be worth considering if this should

library/std/src/ffi/os_str.rs

@@ -1165,7 +1165,7 @@ impl<'a> From<Cow<'a, OsStr>> for OsString {
     }
 }
 
-#[stable(feature = "str_tryfrom_osstr_impl", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "str_tryfrom_osstr_impl", since = "1.72.0")]
 impl<'a> TryFrom<&'a OsStr> for &'a str {
     type Error = crate::str::Utf8Error;
 

library/std/src/sync/mpsc/mod.rs

@@ -347,7 +347,7 @@ pub struct Sender<T> {
 #[stable(feature = "rust1", since = "1.0.0")]
 unsafe impl<T: Send> Send for Sender<T> {}
 
-#[stable(feature = "mpsc_sender_sync", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "mpsc_sender_sync", since = "1.72.0")]
 unsafe impl<T: Send> Sync for Sender<T> {}
 
 /// The sending-half of Rust's synchronous [`sync_channel`] type.

src/ci/channel

@@ -1 +1 @@
-nightly
+beta

src/ci/stage-build.py

@@ -22,6 +22,7 @@ from typing import Callable, ContextManager, Dict, Iterable, Iterator, List, Opt
     Tuple, Union
 
 PGO_HOST = os.environ["PGO_HOST"]
+CHANNEL = os.environ["RUST_RELEASE_CHANNEL"]
 
 LOGGER = logging.getLogger("stage-build")
 
@@ -816,10 +817,10 @@ def run_tests(pipeline: Pipeline):
         return extracted_path
 
     # Extract rustc, libstd, cargo and src archives to create the optimized sysroot
-    rustc_dir = extract_dist_dir(f"rustc-nightly-{PGO_HOST}") / "rustc"
-    libstd_dir = extract_dist_dir(f"rust-std-nightly-{PGO_HOST}") / f"rust-std-{PGO_HOST}"
-    cargo_dir = extract_dist_dir(f"cargo-nightly-{PGO_HOST}") / "cargo"
-    extracted_src_dir = extract_dist_dir("rust-src-nightly") / "rust-src"
+    rustc_dir = extract_dist_dir(f"rustc-{CHANNEL}-{PGO_HOST}") / "rustc"
+    libstd_dir = extract_dist_dir(f"rust-std-{CHANNEL}-{PGO_HOST}") / f"rust-std-{PGO_HOST}"
+    cargo_dir = extract_dist_dir(f"cargo-{CHANNEL}-{PGO_HOST}") / "cargo"
+    extracted_src_dir = extract_dist_dir(f"rust-src-{CHANNEL}") / "rust-src"
 
     # We need to manually copy libstd to the extracted rustc sysroot
     shutil.copytree(
@@ -827,7 +828,7 @@ def run_tests(pipeline: Pipeline):
         rustc_dir / "lib" / "rustlib" / PGO_HOST / "lib"
     )
 
-    # Extract sources - they aren't in the `rustc-nightly-{host}` tarball, so we need to manually copy libstd
+    # Extract sources - they aren't in the `rustc-{CHANNEL}-{host}` tarball, so we need to manually copy libstd
     # sources to the extracted sysroot. We need sources available so that `-Zsimulate-remapped-rust-src-base`
     # works correctly.
     shutil.copytree(