Rollup of 18 pull requests

[JonathanBrouwer]

Successful merges:

• rustc_codegen_cranelift subtree update #163532 (rustc_codegen_cranelift subtree update)
• miri subtree update #163534 (miri subtree update)
• const and NonZero impl for clamp_magnitude() #163279 (const and NonZero impl for clamp_magnitude())
• Some refactorings around metadata encoding #162900 (Some refactorings around metadata encoding)
• Don't use the metadata based crate_hash for rustdoc runs #163455 (Don't use the metadata based crate_hash for rustdoc runs)
• Bump bootstrap compiler to 1.100.0 beta #163483 (Bump bootstrap compiler to 1.100.0 beta)
• Attribute documentation for cfg_attr #159798 (Attribute documentation for cfg_attr)
• Don't build format string suggestions from concat! offsets #163368 (Don't build format string suggestions from concat! offsets)
• Update expect messages in library/std/src/os/unix/net/ following Rust's expect guidance #163375 (Update expect messages in library/std/src/os/unix/net/ following Rust's expect guidance)
• Remove some #[linkage] options #163405 (Remove some #[linkage] options)
• Miscellaneous attr error stuff #163470 (Miscellaneous attr error stuff)
• expose Rc::is_unique #163489 (expose Rc::is_unique)
• x86 and x86_64: cleanup some callconv code #163492 (x86 and x86_64: cleanup some callconv code)
• cycle handling: mirror old solver #163496 (cycle handling: mirror old solver)
• Use more default field values in Resolver #163509 (Use more default field values in Resolver)
• Forbid Reborrow impls for types with destructors #163519 (Forbid Reborrow impls for types with destructors)
• Cast cleanups #163520 (Cast cleanups)
• Document Result case for the arena_cache query modifier #163524 (Document Result case for the arena_cache query modifier)

Failed merges:

• [beta] rustfmt backport #163547 ([beta] rustfmt backport)

r? @ghost

Create a similar rollup

[JonathanBrouwer]

@bors r+ p=5 force

Trying commonly failed jobs
@bors try jobs=dist-various-1,test-various,test-x86_64-gnu-aux,test-x86_64-gnu-llvm-21-3,test-x86_64-msvc-1,test-aarch64-apple-1,test-aarch64-apple-2,test-x86_64-mingw-1,test-i686-msvc,test-armhf-gnu

[rust-bors]

📌 Commit 30d2dac has been approved by JonathanBrouwer

It is now in the queue for this repository.

[rust-log-analyzer]

The job dist-aarch64-freebsd failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

[rust-log-analyzer]

The job test-i686-msvc failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

Bootstrap failed while executing `test --stage 2 --skip=compiler --skip=src`
Currently active steps:
test::Crate { build_compiler: Compiler { stage: 2, host: x86_64-pc-windows-msvc, forced_compiler: false }, target: i686-pc-windows-msvc, mode: Std, crates: ["alloc", "alloctests", "compiler_builtins", "core", "coretests", "panic_abort", "panic_unwind", "proc_macro", "rustc-std-workspace-core", "std", "std_detect", "sysroot", "test", "unwind"] } at src\bootstrap\src\core\build_steps\test.rs:3528
Build completed unsuccessfully in 1:59:45
make: *** [Makefile:115: ci-msvc-py] Error 1
  local time: Wed Sep 30 19:04:58 CUT 2026
  network time: Wed, 30 Sep 2026 19:04:58 GMT
##[error]Process completed with exit code 2.
##[group]Run echo "disk usage:"
echo "disk usage:"

[rust-bors]

💔 Test for 12127cc failed: CI. Failed job:

• auto - dist-aarch64-freebsd (web logs, enhanced plaintext logs)

[rust-bors]

PR #163483, which is a member of this rollup, was unapproved.

[rust-bors]

💔 Test for c0f6fa2 failed: CI. Failed jobs:

• try - test-aarch64-apple-2 (web logs, enhanced plaintext logs)
• try - test-i686-msvc (web logs, enhanced plaintext logs)
• try - test-x86_64-msvc-1 (web logs, enhanced plaintext logs)