Toolchain upgrade to nightly-2025-06-18 failed

[github-actions]

Updating Rust toolchain from nightly-2025-06-17 to nightly-2025-06-18 requires source changes.
The failed automated run can be found here.
Please review the changes at https://github.com/rust-lang/rust from rust-lang/rust@45acf54 up to rust-lang/rust@f3db639. The log for this commit range is:
rust-lang/rust@f3db63916e Auto merge of #142613 - workingjubilee:rollup-yuod2hg, r=workingjubilee
rust-lang/rust@86d0aef804 Auto merge of #137944 - davidtwco:sized-hierarchy, r=oli-obk
rust-lang/rust@68ebae97c5 Rollup merge of #142601 - nnethercote:format_version-comment, r=aDotInTheVoid
rust-lang/rust@3800083399 Rollup merge of #142598 - ostylk:fix/ppc64_llvmabi, r=nikic,workingjubilee
rust-lang/rust@99c8475e52 Rollup merge of #142595 - workingjubilee:revert-warning-138139, r=ChrisDenton
rust-lang/rust@5df238921f Rollup merge of #142587 - compiler-errors:try-visit-expr-fields, r=jieyouxu
rust-lang/rust@301815496e Rollup merge of #142586 - compiler-errors:remove-visit-struct-field-def, r=fmease
rust-lang/rust@bb3a2732ca Rollup merge of #142585 - rustbot:docs-update, r=ehuss
rust-lang/rust@b27b74f80e Rollup merge of #142584 - Urgau:span-borrowck-139049, r=fmease
rust-lang/rust@d4f23cdc91 Rollup merge of #142570 - jieyouxu:disunion, r=estebank
rust-lang/rust@f2e9e2afac Rollup merge of #142563 - jieyouxu:no-more-i686-mingw, r=mati865
rust-lang/rust@725d8291ab Rollup merge of #142542 - cjgillot:invalidate-simplify-cfg, r=SparrowLii
rust-lang/rust@a2a767a5c7 Rollup merge of #142216 - nealsid:refcell-logging, r=tgross35
rust-lang/rust@94ce4b5aa1 Rollup merge of #141946 - xizheyin:141933, r=jhpratt
rust-lang/rust@346adcef4f Rollup merge of #138538 - hkBst:patch-4, r=tgross35
rust-lang/rust@aa8c6f83b6 Don't match on platform-specific directory not found message
rust-lang/rust@1dbedaf405 Refine run-make test ignores due to unpredictable i686-pc-windows-gnu unwind mechanism
rust-lang/rust@55d436467c Auto merge of #142447 - dianqk:llvm-20.1.7, r=nikic