Automatic toolchain upgrade to nightly-2025-08-16

[github-actions]

Update Rust toolchain from nightly-2025-08-15 to nightly-2025-08-16 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@898aff7 up to
rust-lang/rust@cd7cbe8. The log
for this commit range is:

https://github.com/rust-lang/rust/commit/cd7cbe818e Auto merge of #142071 - lcnr:revealing-use, r=compiler-errors

rust-lang/rust@8b1889cc22 Auto merge of #145450 - Kobzol:rollup-cqclix0, r=Kobzol
rust-lang/rust@9bf76aba76 Rollup merge of #145448 - jieyouxu:rustfmt-labels, r=fmease
rust-lang/rust@b979a31d78 Rollup merge of #145431 - AMS21:fix_141531, r=jieyouxu
rust-lang/rust@c97a9c82b2 Rollup merge of #145430 - Urgau:drop_forget_useless-145427, r=lqd
rust-lang/rust@501837fa88 Rollup merge of #145426 - AMS21:fix_typos_bootstrap_example, r=lqd
rust-lang/rust@82c6ad3eda Rollup merge of #145413 - joshtriplett:bootstrap-reduce-deps, r=clubby789
rust-lang/rust@7c93af02e3 Rollup merge of #145412 - tgross35:win-tid, r=ChrisDenton
rust-lang/rust@30c967ddba Rollup merge of #145408 - Kobzol:deduplicate-search-paths, r=petrochenkov
rust-lang/rust@0734cbda19 Rollup merge of #145340 - Kobzol:bootstrap-codegen-backend-check-split, r=jieyouxu
rust-lang/rust@b474f89d5e Rollup merge of #145311 - marcoieni:clean-disk-in-background-windows, r=Kobzol
rust-lang/rust@87d677b7d0 Rollup merge of #145310 - Kobzol:compiler-for-revamp, r=jieyouxu
rust-lang/rust@a676c4891e Rollup merge of #144210 - Gelbpunkt:thread-stack-size-musl, r=jhpratt
rust-lang/rust@c018ae5389 Auto merge of #144991 - lcnr:ignore-usages-from-ignored-candidates, r=BoxyUwU
rust-lang/rust@dbd5addf88 Enhance UI test output handling for runtime errors
rust-lang/rust@ae4eeb9299 Fix wrong spans with external macros in the dropping_copy_types lint
rust-lang/rust@ba412a6e70 Auto merge of #145423 - Zalathar:rollup-9jtefpl, r=Zalathar
rust-lang/rust@cda2114c65 Fix typos in bootstrap.example.toml
rust-lang/rust@f2c2d3ebc3 Clarify that build.full-bootstrap is only used to affect uplifting, not stage selection
rust-lang/rust@36dfed6435 Remove usage of compiler_for from the compile::Rustc step
rust-lang/rust@d8a51f58b3 Remove usage of compiler_for from the compile::Std step
rust-lang/rust@8a7be4ab5e Rename compiler to build_compiler in the compile::Std step
rust-lang/rust@2a2903c49e Split codegen backend check step into two and don't run it with x check compiler
rust-lang/rust@02efea51af Rollup merge of #145392 - Zalathar:create-mappings, r=petrochenkov
rust-lang/rust@21d37d0c15 Rollup merge of #145389 - GuillaumeGomez:unstable-search, r=fmease
rust-lang/rust@dc047f1385 Rollup merge of #145378 - xizheyin:144968, r=davidtwco
rust-lang/rust@36515e780a Rollup merge of #145369 - estebank:issue-145367, r=compiler-errors
rust-lang/rust@b672a2ad5c Rollup merge of #145331 - theemathas:std-prelude-2024, r=tgross35
rust-lang/rust@14e2886028 Rollup merge of #145322 - LorrensP-2158466:early-prelude-processing, r=petrochenkov
rust-lang/rust@201e6324a7 Rollup merge of #145275 - StackOverflowExcept1on:fix-wasm32v1-none, r=alexcrichton
rust-lang/rust@8f1202cef2 Rollup merge of #145235 - compiler-errors:comment, r=BoxyUwU
rust-lang/rust@df4f2aa171 Rollup merge of #145189 - rust-lang:cargo_update, r=clubby789
rust-lang/rust@0166de2f87 Rollup merge of #145120 - maurer:llvm-time, r=nikic
rust-lang/rust@ed5279bbfe Rollup merge of #145065 - petrochenkov:riblock, r=davidtwco
rust-lang/rust@711034f7a1 Rollup merge of #145012 - Kivooeo:fun-problem-fun-fix, r=compiler-errors
rust-lang/rust@98bf7f93d4 Rollup merge of #145005 - tardyp:lto_big_filesize, r=bjorn3
rust-lang/rust@60cb5502c1 Rollup merge of #145004 - bjorn3:remove_unused_fields, r=WaffleLapkin
rust-lang/rust@65e2a8b6d8 Rollup merge of #144947 - tautschnig:remove-stray-checked_div-comment, r=Mark-Simulacrum
rust-lang/rust@b955aa722e Rollup merge of #144944 - He1pa:E0793, r=compiler-errors
rust-lang/rust@44eb7a167c Rollup merge of #144865 - WaffleLapkin:track-tail, r=lqd
rust-lang/rust@603b61df57 Rollup merge of #143075 - workingjubilee:interrupts-may-return-nevermore, r=davidtwco
rust-lang/rust@e3a178234d Rollup merge of #142640 - Sa4dUs:ad-intrinsic, r=ZuseZ4
rust-lang/rust@1eeb8e8b15 Rollup merge of #122661 - estebank:assert-macro-span, r=petrochenkov
rust-lang/rust@324bf2b9fd Rollup merge of #118087 - GrigorenkoPV:refcell_try_map, r=Mark-Simulacrum
rust-lang/rust@8800ec1665 Auto merge of #144591 - RalfJung:pattern-valtrees, r=BoxyUwU
rust-lang/rust@56b33cd5fa bootstrap: Remove dependency on xattr
rust-lang/rust@ffdc40f30a bootstrap: Switch from fd-lock to native locking in std
rust-lang/rust@3507a749b3 Auto merge of #145407 - Kobzol:rollup-g6yhx82, r=Kobzol