Auto merge of #137181 - cuviper:stable-next, r=cuviper 1.85.0

Prepare Rust 1.85.0 stable release

This includes a relnotes sync and a few last-minute backports:

- change `literal_string_with_formatting_args` lint category to nursery #136982
- Update the reference for reverted `extended_varargs_abi_support` #136934
- fix musl's CVE-2025-26519 #137127

r? cuviper

9 files changed, 310 insertions, 56 deletions

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f0e151d2577..5c78ac2816c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -130,9 +130,6 @@ jobs:
           # which then uses log commands to actually set them.
           EXTRA_VARIABLES: ${{ toJson(matrix.env) }}
 
-      - name: setup upstream remote
-        run: src/ci/scripts/setup-upstream-remote.sh
-
       - name: ensure the channel matches the target branch
         run: src/ci/scripts/verify-channel.sh
 
diff --git a/RELEASES.md b/RELEASES.md
index 99733bade32..038d7ca639f 100644
--- a/RELEASES.md
+++ b/RELEASES.md
@@ -1,3 +1,264 @@
+Version 1.85.0 (2025-02-20)
+==========================
+
+<a id="1.85.0-Language"></a>
+
+Language
+--------
+- [The 2024 Edition is now stable.](https://github.com/rust-lang/rust/pull/133349)
+  See [the edition guide](https://doc.rust-lang.org/nightly/edition-guide/rust-2024/index.html) for more details.
+- [Stabilize async closures](https://github.com/rust-lang/rust/pull/132706)
+  See [RFC 3668](https://rust-lang.github.io/rfcs/3668-async-closures.html) for more details.
+- [Stabilize `#[diagnostic::do_not_recommend]`](https://github.com/rust-lang/rust/pull/132056)
+- [Add `unpredictable_function_pointer_comparisons` lint to warn against function pointer comparisons](https://github.com/rust-lang/rust/pull/118833)
+- [Lint on combining `#[no_mangle]` and `#[export_name]` attributes.](https://github.com/rust-lang/rust/pull/131558)
+
+<a id="1.85.0-Compiler"></a>
+
+Compiler
+--------
+- [The unstable flag `-Zpolymorphize` has been removed](https://github.com/rust-lang/rust/pull/133883), see https://github.com/rust-lang/compiler-team/issues/810 for some background.
+
+<a id="1.85.0-Platform-Support"></a>
+
+Platform Support
+----------------
+- [Promote `powerpc64le-unknown-linux-musl` to tier 2 with host tools](https://github.com/rust-lang/rust/pull/133801)
+
+Refer to Rust's [platform support page][platform-support-doc]
+for more information on Rust's tiered platform support.
+
+<a id="1.85.0-Libraries"></a>
+
+Libraries
+---------
+- [Panics in the standard library now have a leading `library/` in their path](https://github.com/rust-lang/rust/pull/132390)
+- [`std::env::home_dir()` on Windows now ignores the non-standard `$HOME` environment variable](https://github.com/rust-lang/rust/pull/132515)
+
+  It will be un-deprecated in a subsequent release.
+- [Add `AsyncFn*` to the prelude in all editions.](https://github.com/rust-lang/rust/pull/132611)
+
+<a id="1.85.0-Stabilized-APIs"></a>
+
+Stabilized APIs
+---------------
+
+- [`BuildHasherDefault::new`](https://doc.rust-lang.org/stable/std/hash/struct.BuildHasherDefault.html#method.new)
+- [`ptr::fn_addr_eq`](https://doc.rust-lang.org/std/ptr/fn.fn_addr_eq.html)
+- [`io::ErrorKind::QuotaExceeded`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.QuotaExceeded)
+- [`io::ErrorKind::CrossesDevices`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.CrossesDevices)
+- [`{float}::midpoint`](https://doc.rust-lang.org/core/primitive.f32.html#method.midpoint)
+- [Unsigned `{integer}::midpoint`](https://doc.rust-lang.org/std/primitive.u64.html#method.midpoint)
+- [`NonZeroU*::midpoint`](https://doc.rust-lang.org/std/num/type.NonZeroU32.html#method.midpoint)
+- [impl `std::iter::Extend` for tuples with arity 1 through 12](https://doc.rust-lang.org/stable/std/iter/trait.Extend.html#impl-Extend%3C(A,)%3E-for-(EA,))
+- [`FromIterator<(A, ...)>` for tuples with arity 1 through 12](https://doc.rust-lang.org/stable/std/iter/trait.FromIterator.html#impl-FromIterator%3C(EA,)%3E-for-(A,))
+- [`std::task::Waker::noop`](https://doc.rust-lang.org/stable/std/task/struct.Waker.html#method.noop)
+
+These APIs are now stable in const contexts:
+
+- [`mem::size_of_val`](https://doc.rust-lang.org/stable/std/mem/fn.size_of_val.html)
+- [`mem::align_of_val`](https://doc.rust-lang.org/stable/std/mem/fn.align_of_val.html)
+- [`Layout::for_value`](https://doc.rust-lang.org/stable/std/alloc/struct.Layout.html#method.for_value)
+- [`Layout::align_to`](https://doc.rust-lang.org/stable/std/alloc/struct.Layout.html#method.align_to)
+- [`Layout::pad_to_align`](https://doc.rust-lang.org/stable/std/alloc/struct.Layout.html#method.pad_to_align)
+- [`Layout::extend`](https://doc.rust-lang.org/stable/std/alloc/struct.Layout.html#method.extend)
+- [`Layout::array`](https://doc.rust-lang.org/stable/std/alloc/struct.Layout.html#method.array)
+- [`std::mem::swap`](https://doc.rust-lang.org/stable/std/mem/fn.swap.html)
+- [`std::ptr::swap`](https://doc.rust-lang.org/stable/std/ptr/fn.swap.html)
+- [`NonNull::new`](https://doc.rust-lang.org/stable/std/ptr/struct.NonNull.html#method.new)
+- [`HashMap::with_hasher`](https://doc.rust-lang.org/stable/std/collections/struct.HashMap.html#method.with_hasher)
+- [`HashSet::with_hasher`](https://doc.rust-lang.org/stable/std/collections/struct.HashSet.html#method.with_hasher)
+- [`BuildHasherDefault::new`](https://doc.rust-lang.org/stable/std/hash/struct.BuildHasherDefault.html#method.new)
+- [`<float>::recip`](https://doc.rust-lang.org/stable/std/primitive.f32.html#method.recip)
+- [`<float>::to_degrees`](https://doc.rust-lang.org/stable/std/primitive.f32.html#method.to_degrees)
+- [`<float>::to_radians`](https://doc.rust-lang.org/stable/std/primitive.f32.html#method.to_radians)
+- [`<float>::max`](https://doc.rust-lang.org/stable/std/primitive.f32.html#method.max)
+- [`<float>::min`](https://doc.rust-lang.org/stable/std/primitive.f32.html#method.min)
+- [`<float>::clamp`](https://doc.rust-lang.org/stable/std/primitive.f32.html#method.clamp)
+- [`<float>::abs`](https://doc.rust-lang.org/stable/std/primitive.f32.html#method.abs)
+- [`<float>::signum`](https://doc.rust-lang.org/stable/std/primitive.f32.html#method.signum)
+- [`<float>::copysign`](https://doc.rust-lang.org/stable/std/primitive.f32.html#method.copysign)
+- [`MaybeUninit::write`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#method.write)
+
+<a id="1.85.0-Cargo"></a>
+
+Cargo
+-----
+- [Add future-incompatibility warning against keywords in cfgs and add raw-idents](https://github.com/rust-lang/cargo/pull/14671/)
+- [Stabilize higher precedence trailing flags](https://github.com/rust-lang/cargo/pull/14900/)
+- [Pass `CARGO_CFG_FEATURE` to build scripts](https://github.com/rust-lang/cargo/pull/14902/)
+
+<a id="1.85.0-Rustdoc"></a>
+
+Rustdoc
+-----
+- [Doc comment on impl blocks shows the first line, even when the impl block is collapsed](https://github.com/rust-lang/rust/pull/132155)
+
+<a id="1.85.0-Compatibility-Notes"></a>
+
+Compatibility Notes
+-------------------
+- [`rustc` no longer treats the `test` cfg as a well known check-cfg](https://github.com/rust-lang/rust/pull/131729), instead it is up to the build systems and users of `--check-cfg`[^check-cfg] to set it as a well known cfg using `--check-cfg=cfg(test)`.
+
+  This is done to enable build systems like Cargo to set it conditionally, as not all source files are suitable for unit tests.
+  [Cargo (for now) unconditionally sets the `test` cfg as a well known cfg](https://github.com/rust-lang/cargo/pull/14963).
+  [^check-cfg]: https://doc.rust-lang.org/nightly/rustc/check-cfg.html
+- [Disable potentially incorrect type inference if there are trivial and non-trivial where-clauses](https://github.com/rust-lang/rust/pull/132325)
+- `std::env::home_dir()` has been deprecated for years, because it can give surprising results in some Windows configurations if the `HOME` environment variable is set (which is not the normal configuration on Windows). We had previously avoided changing its behavior, out of concern for compatibility with code depending on this non-standard configuration. Given how long this function has been deprecated, we're now fixing its behavior as a bugfix. A subsequent release will remove the deprecation for this function.
+- [Make `core::ffi::c_char` signedness more closely match that of the platform-default `char`](https://github.com/rust-lang/rust/pull/132975)
+
+  This changed `c_char` from an `i8` to `u8` or vice versa on many Tier 2 and 3
+  targets (mostly Arm and RISC-V embedded targets). The new definition may
+  result in compilation failures but fixes compatibility issues with C.
+
+  The `libc` crate matches this change as of its 0.2.169 release.
+- [When compiling a nested `macro_rules` macro from an external crate, the content of the inner `macro_rules` is now built with the edition of the external crate, not the local crate.](https://github.com/rust-lang/rust/pull/133274)
+- [Increase `sparcv9-sun-solaris` and `x86_64-pc-solaris` Solaris baseline to 11.4.](https://github.com/rust-lang/rust/pull/133293)
+- [Show `abi_unsupported_vector_types` lint in future breakage reports](https://github.com/rust-lang/rust/pull/133374)
+- [Error if multiple super-trait instantiations of `dyn Trait` need associated types to be specified but only one is provided](https://github.com/rust-lang/rust/pull/133392)
+- [Change `powerpc64-ibm-aix` default `codemodel` to large](https://github.com/rust-lang/rust/pull/133811)
+
+<a id="1.85.0-Internal-Changes"></a>
+
+Internal Changes
+----------------
+
+These changes do not affect any public interfaces of Rust, but they represent
+significant improvements to the performance or internals of rustc and related
+tools.
+
+- [Build `x86_64-unknown-linux-gnu` with LTO for C/C++ code (e.g., `jemalloc`)](https://github.com/rust-lang/rust/pull/134690)
+
+Version 1.84.1 (2025-01-30)
+==========================
+
+<a id="1.84.1"></a>
+
+- [Fix ICE 132920 in duplicate-crate diagnostics.](https://github.com/rust-lang/rust/pull/133304/)
+- [Fix errors for overlapping impls in incremental rebuilds.](https://github.com/rust-lang/rust/pull/133828/)
+- [Fix slow compilation related to the next-generation trait solver.](https://github.com/rust-lang/rust/pull/135618/)
+- [Fix debuginfo when LLVM's location discriminator value limit is exceeded.](https://github.com/rust-lang/rust/pull/135643/)
+- Fixes for building Rust from source:
+  - [Only try to distribute `llvm-objcopy` if llvm tools are enabled.](https://github.com/rust-lang/rust/pull/134240/)
+  - [Add Profile Override for Non-Git Sources.](https://github.com/rust-lang/rust/pull/135433/)
+  - [Resolve symlinks of LLVM tool binaries before copying them.](https://github.com/rust-lang/rust/pull/135585/)
+  - [Make it possible to use ci-rustc on tarball sources.](https://github.com/rust-lang/rust/pull/135722/)
+
+Version 1.84.0 (2025-01-09)
+==========================
+
+<a id="1.84.0-Language"></a>
+
+Language
+--------
+- [Allow `#[deny]` inside `#[forbid]` as a no-op](https://github.com/rust-lang/rust/pull/121560/)
+- [Show a warning when `-Ctarget-feature` is used to toggle features that can lead to unsoundness due to ABI mismatches](https://github.com/rust-lang/rust/pull/129884)
+- [Use the next-generation trait solver in coherence](https://github.com/rust-lang/rust/pull/130654)
+- [Allow coercions to drop the principal of trait objects](https://github.com/rust-lang/rust/pull/131857)
+- [Support `/` as the path separator for `include!()` in all cases on Windows](https://github.com/rust-lang/rust/pull/125205)
+- [Taking a raw ref (`raw (const|mut)`) of a deref of a pointer (`*ptr`) is now safe](https://github.com/rust-lang/rust/pull/129248)
+- [Stabilize s390x inline assembly](https://github.com/rust-lang/rust/pull/131258)
+- [Stabilize Arm64EC inline assembly](https://github.com/rust-lang/rust/pull/131781)
+- [Lint against creating pointers to immediately dropped temporaries](https://github.com/rust-lang/rust/pull/128985)
+- [Execute drop glue when unwinding in an `extern "C"` function](https://github.com/rust-lang/rust/pull/129582)
+
+<a id="1.84.0-Compiler"></a>
+
+Compiler
+--------
+- [Add `--print host-tuple` flag to print the host target tuple and affirm the "target tuple" terminology over "target triple"](https://github.com/rust-lang/rust/pull/125579)
+- [Declaring functions with a calling convention not supported on the current target now triggers a hard error](https://github.com/rust-lang/rust/pull/129935)
+- [Set up indirect access to external data for `loongarch64-unknown-linux-{musl,ohos}`](https://github.com/rust-lang/rust/pull/131583)
+- [Enable XRay instrumentation for LoongArch Linux targets](https://github.com/rust-lang/rust/pull/131818)
+- [Extend the `unexpected_cfgs` lint to also warn in external macros](https://github.com/rust-lang/rust/pull/132577)
+- [Stabilize WebAssembly `multivalue`, `reference-types`, and `tail-call` target features](https://github.com/rust-lang/rust/pull/131080)
+- [Added Tier 2 support for the `wasm32v1-none` target](https://github.com/rust-lang/rust/pull/131487)
+
+<a id="1.84.0-Libraries"></a>
+
+Libraries
+---------
+- [Implement `From<&mut {slice}>` for `Box/Rc/Arc<{slice}>`](https://github.com/rust-lang/rust/pull/129329)
+- [Move `<float>::copysign`, `<float>::abs`, `<float>::signum` to `core`](https://github.com/rust-lang/rust/pull/131304)
+- [Add `LowerExp` and `UpperExp` implementations to `NonZero`](https://github.com/rust-lang/rust/pull/131377)
+- [Implement `FromStr` for `CString` and `TryFrom<CString>` for `String`](https://github.com/rust-lang/rust/pull/130608)
+- [`std::os::darwin` has been made public](https://github.com/rust-lang/rust/pull/123723)
+
+<a id="1.84.0-Stabilized-APIs"></a>
+
+Stabilized APIs
+---------------
+
+- [`Ipv6Addr::is_unique_local`](https://doc.rust-lang.org/stable/core/net/struct.Ipv6Addr.html#method.is_unique_local)
+- [`Ipv6Addr::is_unicast_link_local`](https://doc.rust-lang.org/stable/core/net/struct.Ipv6Addr.html#method.is_unicast_link_local)
+- [`core::ptr::with_exposed_provenance`](https://doc.rust-lang.org/stable/core/ptr/fn.with_exposed_provenance.html)
+- [`core::ptr::with_exposed_provenance_mut`](https://doc.rust-lang.org/stable/core/ptr/fn.with_exposed_provenance_mut.html)
+- [`<ptr>::addr`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.addr)
+- [`<ptr>::expose_provenance`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.expose_provenance)
+- [`<ptr>::with_addr`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.with_addr)
+- [`<ptr>::map_addr`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.map_addr)
+- [`<int>::isqrt`](https://doc.rust-lang.org/stable/core/primitive.i32.html#method.isqrt)
+- [`<int>::checked_isqrt`](https://doc.rust-lang.org/stable/core/primitive.i32.html#method.checked_isqrt)
+- [`<uint>::isqrt`](https://doc.rust-lang.org/stable/core/primitive.u32.html#method.isqrt)
+- [`NonZero::isqrt`](https://doc.rust-lang.org/stable/core/num/struct.NonZero.html#impl-NonZero%3Cu128%3E/method.isqrt)
+- [`core::ptr::without_provenance`](https://doc.rust-lang.org/stable/core/ptr/fn.without_provenance.html)
+- [`core::ptr::without_provenance_mut`](https://doc.rust-lang.org/stable/core/ptr/fn.without_provenance_mut.html)
+- [`core::ptr::dangling`](https://doc.rust-lang.org/stable/core/ptr/fn.dangling.html)
+- [`core::ptr::dangling_mut`](https://doc.rust-lang.org/stable/core/ptr/fn.dangling_mut.html)
+- [`Pin::as_deref_mut`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.as_deref_mut)
+
+These APIs are now stable in const contexts
+
+- [`AtomicBool::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicBool.html#method.from_ptr)
+- [`AtomicPtr::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicPtr.html#method.from_ptr)
+- [`AtomicU8::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicU8.html#method.from_ptr)
+- [`AtomicU16::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicU16.html#method.from_ptr)
+- [`AtomicU32::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicU32.html#method.from_ptr)
+- [`AtomicU64::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicU64.html#method.from_ptr)
+- [`AtomicUsize::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicUsize.html#method.from_ptr)
+- [`AtomicI8::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicI8.html#method.from_ptr)
+- [`AtomicI16::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicI16.html#method.from_ptr)
+- [`AtomicI32::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicI32.html#method.from_ptr)
+- [`AtomicI64::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicI64.html#method.from_ptr)
+- [`AtomicIsize::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicIsize.html#method.from_ptr)
+- [`<ptr>::is_null`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.is_null-1)
+- [`<ptr>::as_ref`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.as_ref-1)
+- [`<ptr>::as_mut`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.as_mut)
+- [`Pin::new`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.new)
+- [`Pin::new_unchecked`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.new_unchecked)
+- [`Pin::get_ref`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.get_ref)
+- [`Pin::into_ref`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.into_ref)
+- [`Pin::get_mut`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.get_mut)
+- [`Pin::get_unchecked_mut`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.get_unchecked_mut)
+- [`Pin::static_ref`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.static_ref)
+- [`Pin::static_mut`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.static_mut)
+
+<a id="1.84.0-Cargo"></a>
+
+Cargo
+-----
+- [Stabilize MSRV-aware resolver config](https://github.com/rust-lang/cargo/pull/14639/)
+- [Stabilize resolver v3](https://github.com/rust-lang/cargo/pull/14754/)
+
+<a id="1.84-Rustdoc"></a>
+
+Rustdoc
+-------
+
+- [rustdoc-search: improve type-driven search](https://github.com/rust-lang/rust/pull/127589)
+
+<a id="1.84.0-Compatibility-Notes"></a>
+
+Compatibility Notes
+-------------------
+- [Enable by default the `LSX` target feature for LoongArch Linux targets](https://github.com/rust-lang/rust/pull/132140)
+- [The unstable `-Zprofile` flag (“gcov-style” coverage instrumentation) has been removed.](https://github.com/rust-lang/rust/pull/131829) This does not affect the stable flags for coverage instrumentation (`-Cinstrument-coverage`) and profile-guided optimization (`-Cprofile-generate`, `-Cprofile-use`), which are unrelated and remain available.
+- Support for the target named `wasm32-wasi` has been removed as the target is now named `wasm32-wasip1`. This completes the [transition](https://github.com/rust-lang/compiler-team/issues/607) [plan](https://github.com/rust-lang/compiler-team/issues/695) for this target following [the introduction of `wasm32-wasip1`](https://github.com/rust-lang/rust/pull/120468) in Rust 1.78. Compiler warnings on [use of `wasm32-wasi`](https://github.com/rust-lang/rust/pull/126662) introduced in Rust 1.81 are now gone as well as the target is removed.
+- [The syntax `&pin (mut|const) T` is now parsed as a type which in theory could affect macro expansion results in some edge cases](https://github.com/rust-lang/rust/pull/130635#issuecomment-2375462821)
+- [Legacy syntax for calling `std::arch` functions is no longer permitted to declare items or bodies (such as closures, inline consts, or async blocks).](https://github.com/rust-lang/rust/pull/130443#issuecomment-2445678945)
+- [Declaring functions with a calling convention not supported on the current target now triggers a hard error](https://github.com/rust-lang/rust/pull/129935)
+- [The next-generation trait solver is now enabled for coherence, fixing multiple soundness issues](https://github.com/rust-lang/rust/pull/130654)
+
 Version 1.83.0 (2024-11-28)
 ==========================
 
@@ -243,7 +504,7 @@ Language
 - [`addr_of(_mut)!` macros and the newly stabilized `&raw (const|mut)` are now safe to use with all static items](https://github.com/rust-lang/rust/pull/125834)
 - [size_of_val_raw: for length 0 this is safe to call](https://github.com/rust-lang/rust/pull/126152/)
 - [Reorder trait bound modifiers *after* `for<...>` binder in trait bounds](https://github.com/rust-lang/rust/pull/127054/)
-- [Stabilize opaque type precise capturing (RFC 3617)](https://github.com/rust-lang/rust/pull/127672)
+- [Stabilize `+ use<'lt>` opaque type precise capturing (RFC 3617)](https://github.com/rust-lang/rust/pull/127672)
 - [Stabilize `&raw const` and `&raw mut` operators (RFC 2582)](https://github.com/rust-lang/rust/pull/127679)
 - [Stabilize unsafe extern blocks (RFC 3484)](https://github.com/rust-lang/rust/pull/127921)
 - [Stabilize nested field access in `offset_of!`](https://github.com/rust-lang/rust/pull/128284)
@@ -457,6 +718,7 @@ Libraries
 - [Replace sort implementations with stable `driftsort` and unstable `ipnsort`.](https://github.com/rust-lang/rust/pull/124032/) All `slice::sort*` and `slice::select_nth*` methods are expected to see significant performance improvements. See the [research project](https://github.com/Voultapher/sort-research-rs) for more details.
 - [Document behavior of `create_dir_all` with respect to empty paths.](https://github.com/rust-lang/rust/pull/125112/)
 - [Fix interleaved output in the default panic hook when multiple threads panic simultaneously.](https://github.com/rust-lang/rust/pull/127397/)
+- Fix `Command`'s batch files argument escaping not working when file name has trailing whitespace or periods (CVE-2024-43402).
 
 <a id="1.81.0-Stabilized-APIs"></a>
 
@@ -2067,7 +2329,7 @@ Language
 --------
 
 - [Stabilize default_alloc_error_handler](https://github.com/rust-lang/rust/pull/102318/)
-  This allows usage of `alloc` on stable without requiring the 
+  This allows usage of `alloc` on stable without requiring the
   definition of a handler for allocation failure. Defining custom handlers is still unstable.
 - [Stabilize `efiapi` calling convention.](https://github.com/rust-lang/rust/pull/105795/)
 - [Remove implicit promotion for types with drop glue](https://github.com/rust-lang/rust/pull/105085/)
diff --git a/src/build_helper/src/git.rs b/src/build_helper/src/git.rs
index 2aad5650fa8..1e28d552fe6 100644
--- a/src/build_helper/src/git.rs
+++ b/src/build_helper/src/git.rs
@@ -1,8 +1,6 @@
 use std::path::{Path, PathBuf};
 use std::process::{Command, Stdio};
 
-use crate::ci::CiEnv;
-
 pub struct GitConfig<'a> {
     pub git_repository: &'a str,
     pub nightly_branch: &'a str,
@@ -116,8 +114,8 @@ fn git_upstream_merge_base(
 
 /// Searches for the nearest merge commit in the repository that also exists upstream.
 ///
-/// It looks for the most recent commit made by the merge bot by matching the author's email
-/// address with the merge bot's email.
+/// If it fails to find the upstream remote, it then looks for the most recent commit made
+/// by the merge bot by matching the author's email address with the merge bot's email.
 pub fn get_closest_merge_commit(
     git_dir: Option<&Path>,
     config: &GitConfig<'_>,
@@ -129,15 +127,7 @@ pub fn get_closest_merge_commit(
         git.current_dir(git_dir);
     }
 
-    let merge_base = {
-        if CiEnv::is_ci() {
-            git_upstream_merge_base(config, git_dir).unwrap()
-        } else {
-            // For non-CI environments, ignore rust-lang/rust upstream as it usually gets
-            // outdated very quickly.
-            "HEAD".to_string()
-        }
-    };
+    let merge_base = git_upstream_merge_base(config, git_dir).unwrap_or_else(|_| "HEAD".into());
 
     git.args([
         "rev-list",
diff --git a/src/ci/channel b/src/ci/channel
index 65b2df87f7d..2bf5ad0447d 100644
--- a/src/ci/channel
+++ b/src/ci/channel
@@ -1 +1 @@
-beta
+stable
diff --git a/src/ci/docker/scripts/musl.sh b/src/ci/docker/scripts/musl.sh
index ece8e6c15c0..9878bec6fbe 100644
--- a/src/ci/docker/scripts/musl.sh
+++ b/src/ci/docker/scripts/musl.sh
@@ -30,6 +30,47 @@ MUSL=musl-1.2.3
 # may have been downloaded in a previous run
 if [ ! -d $MUSL ]; then
   curl https://www.musl-libc.org/releases/$MUSL.tar.gz | tar xzf -
+
+  # Apply patches for CVE-2025-26519. At the time of adding these patches no release containing them
+  # has been published by the musl project, so we just apply them directly on top of the version we
+  # were distributing already. The patches should be removed once we upgrade to musl >= 1.2.6.
+  #
+  # Advisory: https://www.openwall.com/lists/musl/2025/02/13/1
+  #
+  # Patches applied:
+  # - https://www.openwall.com/lists/musl/2025/02/13/1/1
+  # - https://www.openwall.com/lists/musl/2025/02/13/1/2
+  #
+  # ignore-tidy-tab
+  # ignore-tidy-linelength
+  patch -p1 -d $MUSL <<EOF
+--- a/src/locale/iconv.c
++++ b/src/locale/iconv.c
+@@ -502,7 +502,7 @@ size_t iconv(iconv_t cd, char **restrict in, size_t *restrict inb, char **restri
+ 			if (c >= 93 || d >= 94) {
+ 				c += (0xa1-0x81);
+ 				d += 0xa1;
+-				if (c >= 93 || c>=0xc6-0x81 && d>0x52)
++				if (c > 0xc6-0x81 || c==0xc6-0x81 && d>0x52)
+ 					goto ilseq;
+ 				if (d-'A'<26) d = d-'A';
+ 				else if (d-'a'<26) d = d-'a'+26;
+EOF
+  patch -p1 -d $MUSL <<EOF
+--- a/src/locale/iconv.c
++++ b/src/locale/iconv.c
+@@ -545,6 +545,10 @@ size_t iconv(iconv_t cd, char **restrict in, size_t *restrict inb, char **restri
+ 				if (*outb < k) goto toobig;
+ 				memcpy(*out, tmp, k);
+ 			} else k = wctomb_utf8(*out, c);
++			/* This failure condition should be unreachable, but
++			 * is included to prevent decoder bugs from translating
++			 * into advancement outside the output buffer range. */
++			if (k>4) goto ilseq;
+ 			*out += k;
+ 			*outb -= k;
+ 			break;
+EOF
 fi
 
 cd $MUSL
diff --git a/src/ci/scripts/setup-upstream-remote.sh b/src/ci/scripts/setup-upstream-remote.sh
deleted file mode 100755
index 52b4c98a890..00000000000
--- a/src/ci/scripts/setup-upstream-remote.sh
+++ /dev/null
@@ -1,24 +0,0 @@
-#!/bin/bash
-# In CI environments, bootstrap is forced to use the remote upstream based
-# on "git_repository" and "nightly_branch" values from src/stage0 file.
-# This script configures the remote as it may not exist by default.
-
-set -euo pipefail
-IFS=$'\n\t'
-
-ci_dir=$(cd $(dirname $0) && pwd)/..
-source "$ci_dir/shared.sh"
-
-git_repository=$(parse_stage0_file_by_key "git_repository")
-nightly_branch=$(parse_stage0_file_by_key "nightly_branch")
-
-# Configure "rust-lang/rust" upstream remote only when it's not origin.
-if [ -z "$(git config remote.origin.url | grep $git_repository)" ]; then
-    echo "Configuring https://github.com/$git_repository remote as upstream."
-    git remote add upstream "https://github.com/$git_repository"
-    REMOTE_NAME="upstream"
-else
-    REMOTE_NAME="origin"
-fi
-
-git fetch $REMOTE_NAME $nightly_branch
diff --git a/src/ci/shared.sh b/src/ci/shared.sh
index 9fce68947f4..76464add75d 100644
--- a/src/ci/shared.sh
+++ b/src/ci/shared.sh
@@ -137,15 +137,3 @@ function releaseChannel {
         echo $RUST_CI_OVERRIDE_RELEASE_CHANNEL
     fi
 }
-
-# Parse values from src/stage0 file by key
-function parse_stage0_file_by_key {
-    local key="$1"
-    local file="$ci_dir/../stage0"
-    local value=$(awk -F= '{a[$1]=$2} END {print(a["'$key'"])}' $file)
-    if [ -z "$value" ]; then
-        echo "ERROR: Key '$key' not found in '$file'."
-        exit 1
-    fi
-    echo "$value"
-}
diff --git a/src/doc/reference b/src/doc/reference
-Subproject acd6794e712d5e2ef6f5c84fb95688d32a69b81
+Subproject b05d56e8dfab65ac842b898ccdac5cd61c16355
diff --git a/src/tools/clippy/clippy_lints/src/literal_string_with_formatting_args.rs b/src/tools/clippy/clippy_lints/src/literal_string_with_formatting_args.rs
index 49353a1b76b..2d8c1e492fb 100644
--- a/src/tools/clippy/clippy_lints/src/literal_string_with_formatting_args.rs
+++ b/src/tools/clippy/clippy_lints/src/literal_string_with_formatting_args.rs
@@ -31,7 +31,7 @@ declare_clippy_lint! {
     /// ```
     #[clippy::version = "1.83.0"]
     pub LITERAL_STRING_WITH_FORMATTING_ARGS,
-    suspicious,
+    nursery,
     "Checks if string literals have formatting arguments"
 }