[github-actions]

Update Rust toolchain from nightly-2026-10-11 to nightly-2026-10-12 without any other source changes.

[github-actions]

This is an automatically generated pull request. If any of the CI checks fail,
manual intervention is required. In such a case, review the changes at
https://github.com/rust-lang/rust from
rust-lang/rust@6f5da40 up to
rust-lang/rust@080cc27. The log
for this commit range is:

https://github.com/rust-lang/rust/commit/080cc27146 Auto merge of #163865 - cxnmai:file-macro-optimization, r=fmease

rust-lang/rust@0e75b0b0e6 Auto merge of #163521 - ywxt:btree_map_iter, r=Amanieu
rust-lang/rust@66b293448b Auto merge of #164159 - JonathanBrouwer:rollup-saZbJ3D, r=JonathanBrouwer
rust-lang/rust@debc07b1c5 Rollup merge of #164154 - tshepang:rdg-sync, r=tshepang
rust-lang/rust@8499655c58 Rollup merge of #164047 - JonathanBrouwer:expr-body, r=Kivooeo
rust-lang/rust@f3983ba757 Rollup merge of #163918 - yilin0518:fix_arm_hint, r=JohnTitor
rust-lang/rust@0617e57afe Auto merge of #163398 - RalfJung:thread-local-key-inner, r=joboet
rust-lang/rust@7211ea594c Auto merge of #164132 - jhpratt:rollup-mABOFPo, r=jhpratt
rust-lang/rust@0ea4194114 Rollup merge of #164120 - Gelbpunkt:duplicated-path-in-error-musl-libloading-0.9, r=folkertdev
rust-lang/rust@e4adc2d32e Rollup merge of #164110 - Gelbpunkt:mips64-callconv-doc, r=folkertdev
rust-lang/rust@11085454e0 Rollup merge of #164100 - GuillaumeGomez:clean-rustdoc-html-tests, r=Urgau
rust-lang/rust@a430d4eceb Rollup merge of #164075 - sjwang05:alias-rigid-mir, r=adwinwhite
rust-lang/rust@65fb697bff Rollup merge of #162926 - Hamdan-Khan:return-type-mismatch-diagnostics, r=mejrs
rust-lang/rust@f77c964d3b Rollup merge of #164020 - tmiasko:deduce-unit, r=jackh726
rust-lang/rust@20324de8e1 Rollup merge of #163999 - estebank:similar-name-context, r=jackh726
rust-lang/rust@2d1cde4af4 Rollup merge of #163402 - mattst88:test-float-parse-memory, r=tgross35