Automatic toolchain upgrade to nightly-2023-12-09

[github-actions]

Update Rust toolchain from nightly-2023-12-08 to nightly-2023-12-09 without any other source changes.
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@503e129 up to rust-lang/rust@f967532. The log for this commit range is:
rust-lang/rust@f967532a47 Auto merge of #118420 - compiler-errors:async-gen, r=eholk
rust-lang/rust@11375c8657 Add tests
rust-lang/rust@4c77058562 HACK: constrain yield type in check_fn so that projection is successful even with no yield
rust-lang/rust@44911b7c67 Make some matches exhaustive to avoid bugs, fix tools
rust-lang/rust@a208bae00e Support async gen fn
rust-lang/rust@2806c2df7b coro_kind -> coroutine_kind
rust-lang/rust@96bb542a31 Implement async gen blocks
rust-lang/rust@a0cbc168c9 Rework coroutine transform to be more flexible in preparation for async generators
rust-lang/rust@2b399b5275 Auto merge of #118527 - Nadrieril:never_patterns_parse, r=compiler-errors
rust-lang/rust@ae612bedcb Auto merge of #118689 - compiler-errors:const-drop, r=fee1-dead
rust-lang/rust@5ea62560f2 Auto merge of #118668 - fmease:resolve-assoc-item-bindings-by-namespace, r=compiler-errors
rust-lang/rust@8043f62258 Auto merge of #118732 - matthiaskrgr:rollup-ub9pgjm, r=matthiaskrgr
rust-lang/rust@9dd34d5945 Rollup merge of #118722 - notriddle:notriddle/dom-opt-3, r=GuillaumeGomez
rust-lang/rust@beabb5e2e3 Rollup merge of #118709 - oksbsb:fix-job-server, r=SparrowLii
rust-lang/rust@f7c892e323 Rollup merge of #118695 - Zalathar:push-refined, r=davidtwco
rust-lang/rust@646d627661 Rollup merge of #118693 - saethlin:alignment-check-symbol-reachable, r=bjorn3
rust-lang/rust@0c121b568e Rollup merge of #118690 - Zalathar:test-macros, r=cjgillot
rust-lang/rust@fa724ccc6d Rollup merge of #118677 - GuillaumeGomez:doc_cfg-display, r=notriddle
rust-lang/rust@982a238ac9 Rollup merge of #118581 - ianrrees:add-drop-note-to-once_lock, r=workingjubilee
rust-lang/rust@992f7ee5fd Rollup merge of #118505 - CLEckhardt:update_ip_addr_bits_docs, r=cuviper
rust-lang/rust@6c470a557a Auto merge of #118301 - weihanglo:rustfix-doc, r=albertlarsan68
rust-lang/rust@21982a4383 Auto merge of #118725 - lcnr:normalizes-to-projection-split-3, r=BoxyUwU
rust-lang/rust@dabedb711f 1. fix jobserver GLOBAL_CLIENT_CHECKED uninitialized before use 2. jobserver::initialize_checked should call before build_session, still should use EarlyErrorHandler, so revert stderr change in #118635
rust-lang/rust@ac50f4b571 update fixme
rust-lang/rust@1490c58076 add regression tests
rust-lang/rust@ffb4c08a81 implement and use NormalizesTo
rust-lang/rust@d6fa38a9b2 Auto merge of #118442 - tmiasko:fuel-inc, r=lqd
rust-lang/rust@1a47e413b2 Fuel is incompatible with incremental compilation
rust-lang/rust@370c91100c Auto merge of #118723 - matthiaskrgr:rollup-409e9u1, r=matthiaskrgr
rust-lang/rust@a73d1bf631 Inline check_thread_count implementation
rust-lang/rust@55559d93e7 Resolve assoc item bindings by namespace
rust-lang/rust@88fccc465f OnceLock: Rework example, statics aren't dropped
rust-lang/rust@71812d7eb0 Rollup merge of #118719 - rcvalle:rust-cfi-normalize-integers-118032, r=compiler-errors
rust-lang/rust@0be2196c45 Rollup merge of #118712 - davidtwco:targets-remove-i386-i486, r=compiler-errors
rust-lang/rust@861cb32546 Rollup merge of #118707 - GuillaumeGomez:ping-cg_gcc, r=antoyo
rust-lang/rust@20ed80523a Rollup merge of #118688 - celinval:smir-rvalue-ty, r=compiler-errors
rust-lang/rust@b20430345e Rollup merge of #118686 - compiler-errors:object-safety, r=lcnr
rust-lang/rust@71a8ca0522 Rollup merge of #116420 - bvanjoi:fix-116203, r=Nilstrieb
rust-lang/rust@6a0a89af80 rustdoc: remove unused parameter reversed from onEach(Lazy)
rust-lang/rust@97032d63bd CFI: Add char to CFI integer normalization
rust-lang/rust@3978f545ba add unused NormalizesTo predicate
rust-lang/rust@efe8ae730f Fix const drop checking
rust-lang/rust@399cd6cbfd targets: remove not-added {i386,i486}-unknown-linux-gnu
rust-lang/rust@c3bb1b50a5 Elaborate on ip_addr bit conversion endianness
rust-lang/rust@40aa9f4fd9 avoid instantiating infer vars with infer
rust-lang/rust@c0be10c3d1 Ping GuillaumeGomez for changes in rustc_codegen_gcc
rust-lang/rust@9e1797baf1 Extend GUI tests for doc_cfg
rust-lang/rust@bf681dcfb5 Fix display of features in rustdoc
rust-lang/rust@9a4321518c coverage: Simplify code that pushes to refined_spans
rust-lang/rust@9089d28780 coverage: Inline push_refined_span
rust-lang/rust@ec0110be09 coverage: Merge refined spans in a separate final pass
rust-lang/rust@4616b9fd1d Add sanity check to BinOp::ty()
rust-lang/rust@aa58ccb53e Tell MirUsedCollector that the pointer alignment checks calls its panic symbol
rust-lang/rust@77d7e44573 Update compiler/stable_mir/src/mir/body.rs
rust-lang/rust@47e6e5ee67 coverage: Avoid unnecessary macros in unit tests
rust-lang/rust@e16ebdbb06 Simplify StaticDef to Instance conversion
rust-lang/rust@281b65aad9 Add method to get type of an Rvalue in StableMIR
rust-lang/rust@5d3a294b46 Only check principal trait ref for object safety
rust-lang/rust@431cc4a3b0 Satisfy tidy
rust-lang/rust@70deb9a57f Disallow arm bodies on never patterns
rust-lang/rust@06a8ed10b6 Disallow guards on never patterns
rust-lang/rust@a2dcb3a6d9 Disallow an arm without a body (except for never patterns)
rust-lang/rust@0bfebc6105 Detect attempts to expand a macro to a match arm again
rust-lang/rust@80bdcbf50a Parse a pattern with no arm
rust-lang/rust@caa488b96e Add tests
rust-lang/rust@72321011ca bootstrap: remove unused comment
rust-lang/rust@ee9a70dec0 bootstrap: sort items of cargo docs
rust-lang/rust@39b495c3ff bootstrap: build rustfix doc from src/tools/cargo
rust-lang/rust@4138702621 discard invalid spans in external blocks