Rollup of 8 pull requests

[jhpratt]

Successful merges:

• Enable Enzyme for aarch64-apple-darwin #157240 (Enable Enzyme for aarch64-apple-darwin)
• miri subtree update #157276 (miri subtree update)
• Add APIs for case folding to the standard library #154742 (Add APIs for case folding to the standard library)
• Use a ArrayVec in CastTarget #157130 (Use a ArrayVec in CastTarget)
• Move feature gating to the new attr parsing infrastructure #157195 (Move feature gating to the new attr parsing infrastructure)
• tests: adapt for LLVM codegen change #157256 (tests: adapt for LLVM codegen change)
• Update books #157265 (Update books)
• triagebot.toml: add LawnGnome to libs reviewers #157277 (triagebot.toml: add LawnGnome to libs reviewers)

r? @ghost

Create a similar rollup

[jhpratt]

@bors r+ rollup=never p=5

[rust-bors]

📌 Commit 698ca16 has been approved by jhpratt

It is now in the queue for this repository.

[rust-log-analyzer]

The job x86_64-gnu-llvm-21-3 failed! Check out the build log: (web) (plain enhanced) (plain)

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

---- [codegen] tests/codegen-llvm/issues/issue-123712-str-to-lower-autovectorization.rs stdout ----
------rustc stdout------------------------------

------rustc stderr------------------------------
error[E0308]: mismatched types
##[error]  --> /checkout/tests/codegen-llvm/issues/issue-123712-str-to-lower-autovectorization.rs:23:49
   |
23 |     unsafe { alloc::str::convert_while_ascii(s, u8::to_ascii_lowercase) }
   |              -------------------------------    ^^^^^^^^^^^^^^^^^^^^^^ expected fn pointer, found fn item
   |              |
   |              arguments to this function are incorrect
   |
   = note: expected fn pointer `fn(core::ascii::Char) -> core::ascii::Char`
                 found fn item `for<'a> fn(&'a u8) -> u8 {core::num::<impl u8>::to_ascii_lowercase}`
note: function defined here
  --> /rustc/FAKE_PREFIX/library/alloc/src/str.rs:908:7

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0308`.

------------------------------------------

error: compilation failed!
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage1/bin/rustc" "/checkout/tests/codegen-llvm/issues/issue-123712-str-to-lower-autovectorization.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage1" "--target=x86_64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "-O" "-Cdebug-assertions=no" "-Zcodegen-source-order" "--emit" "llvm-ir" "-C" "prefer-dynamic" "-o" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/codegen-llvm/issues/issue-123712-str-to-lower-autovectorization/issue-123712-str-to-lower-autovectorization.ll" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-C" "opt-level=3"
stdout: none
--- stderr -------------------------------
error[E0308]: mismatched types
##[error]  --> /checkout/tests/codegen-llvm/issues/issue-123712-str-to-lower-autovectorization.rs:23:49
   |
23 |     unsafe { alloc::str::convert_while_ascii(s, u8::to_ascii_lowercase) }
   |              -------------------------------    ^^^^^^^^^^^^^^^^^^^^^^ expected fn pointer, found fn item
   |              |
   |              arguments to this function are incorrect
   |
   = note: expected fn pointer `fn(core::ascii::Char) -> core::ascii::Char`
                 found fn item `for<'a> fn(&'a u8) -> u8 {core::num::<impl u8>::to_ascii_lowercase}`
note: function defined here
  --> /rustc/FAKE_PREFIX/library/alloc/src/str.rs:908:7

error: aborting due to 1 previous error

[rust-bors]

💔 Test for 76d4faf failed: CI. Failed job:

• auto - x86_64-gnu-llvm-21-3 (web logs, enhanced plaintext logs)

[rust-bors]

PR #154742, which is a member of this rollup, was unapproved.