Toolchain upgrade to nightly-2025-09-19 failed

[github-actions]

Updating Rust toolchain from nightly-2025-09-18 to nightly-2025-09-19 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@4645a79 up to rust-lang/rust@7c275d0. The log for this commit range is:
rust-lang/rust@7c275d09ea Auto merge of #146728 - flip1995:clippy-subtree-update, r=samueltardieu
rust-lang/rust@0c0c58b8e4 Auto merge of #146727 - matthiaskrgr:rollup-98812uj, r=matthiaskrgr
rust-lang/rust@5d1619b3ec Update Cargo.lock
rust-lang/rust@1bfe3bcfec Merge commit '20ce69b9a63bcd2756cd906fe0964d1e901e042a' into clippy-subtree-update
rust-lang/rust@24d6259dce Rollup merge of #146723 - Mark-Simulacrum:relnotes-fix, r=Kobzol
rust-lang/rust@3afe1cab09 Rollup merge of #146717 - amandasystems:remove-placeholder-hack, r=lcnr
rust-lang/rust@f28730fcd4 Rollup merge of #146622 - aklaiber:91831_add_regression_test, r=jdonszelmann
rust-lang/rust@b7ab58eb4d Rollup merge of #146597 - modhanami:add-struct-tail-recursion-limit-span, r=oli-obk
rust-lang/rust@fd852f4bee Rollup merge of #146487 - ferrocene:pvdrz/improve-num-coverage, r=joboet
rust-lang/rust@185926c99f Rollup merge of #146434 - folkertdev:c-variadic-inherent-methods, r=workingjubilee
rust-lang/rust@4cd91ef822 Auto merge of #145993 - lcnr:allow-calling-opaques, r=BoxyUwU
rust-lang/rust@495d7ee587 Include patch in release notes
rust-lang/rust@32e3d9f59b Auto merge of #146671 - ZuseZ4:update-enzyme-submodule, r=davidtwco
rust-lang/rust@97a987f14c Auto merge of #142544 - Sa4dUs:prevent-abi-changes, r=ZuseZ4
rust-lang/rust@4793ef5cf5 Auto merge of #146698 - Zalathar:rollup-0oxl4gx, r=Zalathar
rust-lang/rust@06cbfd6706 Rollup merge of #146694 - camsteffen:impl-subject, r=compiler-errors
rust-lang/rust@d1ed8d4311 Rollup merge of #146673 - Zalathar:di-builder, r=nnethercote
rust-lang/rust@540fd20ba6 Rollup merge of #146664 - fmease:clean-up-dyn, r=jdonszelmann
rust-lang/rust@34a805b0f5 Rollup merge of #146645 - yotamofek:pr/rustdoc/fndecl_inner_full_print, r=fmease
rust-lang/rust@d5aa8d5e5e Rollup merge of #146566 - cjgillot:mir-overlap-lint, r=saethlin
rust-lang/rust@93117677d8 Auto merge of #146685 - jdonszelmann:rollup-kwuih4z, r=jdonszelmann