Automatic toolchain upgrade to nightly-2023-10-18

[github-actions]

Update Rust toolchain from nightly-2023-10-17 to nightly-2023-10-18 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@49691b1 up to rust-lang/rust@09df610. The log for this commit range is:
rust-lang/rust@09df6108c8 Auto merge of #116767 - cjgillot:alloc-normalize, r=oli-obk
rust-lang/rust@94ba57cef4 Auto merge of #116855 - matthiaskrgr:rollup-i2izdwb, r=matthiaskrgr
rust-lang/rust@6e6cd68cd0 Rollup merge of #116827 - nnethercote:pub-handle_options, r=compiler-errors
rust-lang/rust@3ea438eb3a Rollup merge of #116787 - a-lafrance:span-internal-lint, r=oli-obk
rust-lang/rust@00f529d246 Rollup merge of #116719 - celinval:smir-mono, r=oli-obk
rust-lang/rust@a5aa52c23a Rollup merge of #116717 - estebank:issue-9082, r=oli-obk
rust-lang/rust@ce407429dd Rollup merge of #111072 - Urgau:check-cfg-new-syntax, r=petrochenkov
rust-lang/rust@bb74d1fa85 Auto merge of #116844 - weihanglo:update-cargo, r=weihanglo
rust-lang/rust@8f970c72a6 Update cargo
rust-lang/rust@93e62a260f Auto merge of #115577 - RalfJung:atomic-load, r=Amanieu
rust-lang/rust@616e37919c Auto merge of #116756 - fee1-dead-contrib:dupe-those-bounds, r=oli-obk
rust-lang/rust@2e57d647b0 Auto merge of #116518 - vita-rust:vita, r=workingjubilee
rust-lang/rust@347452e7e3 Auto merge of #116196 - onur-ozkan:reorganize-bootstrap-sources, r=Mark-Simulacrum
rust-lang/rust@ba13e37e30 Updated libc and doc for Vita target
rust-lang/rust@3ecff1b760 bootstrap: fix warnings
rust-lang/rust@f1e3e75f6c rename bootstrap module utils/dylib_util->utils/dylib
rust-lang/rust@9f381fe345 move bootstrap utils into bootstrap/src/utils module
rust-lang/rust@2bce0207d4 move bootstrap core implementation to bootstrap/src/core module
rust-lang/rust@c68ab9347e improve bootstrap tests structure
rust-lang/rust@acef1c2c57 reorganize bootstrap bins and helper module utilizations
rust-lang/rust@ddef56d5df Auto merge of #116824 - notriddle:master, r=fmease
rust-lang/rust@e494df436d remove 128bit atomics, they are anyway not exposed on those targets
rust-lang/rust@631a116cd3 Auto merge of #116822 - notriddle:notriddle/rust-logo, r=fmease
rust-lang/rust@e89d4d4871 fix lint failures in clippy
rust-lang/rust@52ad8199d5 tweak pass description and fix lint fail post-rebase
rust-lang/rust@5895102c4d debug Span::ctxt() call detection
rust-lang/rust@c07693c160 Auto merge of #116477 - nnethercote:tidy-alpha-deps, r=wesleywiser
rust-lang/rust@f77dea89e1 basic lint v2 implemented
rust-lang/rust@8769e02d0b implement the basics of the lint static analysis
rust-lang/rust@b0e1a52e37 Make handle_options public again.
rust-lang/rust@c0b6a5d340 rustdoc: add check-pass to ICE test with no expected output
rust-lang/rust@94b39e8c86 rustdoc: move ICE test to rustdoc-ui
rust-lang/rust@43b493ebc0 Add URL to test cases
rust-lang/rust@69dc19043b Rename issue-\d+.rs tests to have meaningful names
rust-lang/rust@39164b84e0 Auto merge of #116826 - nnethercote:fix-116780-116797, r=compiler-errors
rust-lang/rust@91f2fbc867 Fix a performance regression in obligation deduplication.
rust-lang/rust@64338796ab Auto merge of #116820 - GuillaumeGomez:rollup-l54ri5q, r=GuillaumeGomez
rust-lang/rust@df5ea58287 Add crate_name to test so that it can be renamed
rust-lang/rust@2ff2624722 docs: add Rust logo to more compiler crates
rust-lang/rust@05e2056746 Rollup merge of #116811 - narpfel:unpretty-unicode-escape-in-format-string-literal, r=Nilstrieb
rust-lang/rust@23000c3980 Rollup merge of #116808 - ouz-a:add_myself_to_triage, r=Nilstrieb
rust-lang/rust@347f7f3bf4 Rollup merge of #116805 - Nilstrieb:onunimplemented-std-core-alloc-whatever-who-cares, r=compiler-errors
rust-lang/rust@d0ade3f1ba Rollup merge of #116800 - compiler-errors:rpitit-gat-outlives, r=jackh726
rust-lang/rust@4c1c8abbf3 Rollup merge of #116798 - GuillaumeGomez:rustdoc-gui-tester-cleanup, r=notriddle
rust-lang/rust@581f88deda Rollup merge of #116754 - Zalathar:spans, r=oli-obk
rust-lang/rust@26954f60ff address review comment
rust-lang/rust@587899e9ca Preserve unicode escapes in format string literals when pretty-printing AST
rust-lang/rust@1f90d857d7 Stop trying to preserve pretty-printing.
rust-lang/rust@364f1a3f16 Add MonoItems and Instance to stable_mir
rust-lang/rust@0eb958a89b Rebless.
rust-lang/rust@669b99d35e Elaborate comment.
rust-lang/rust@c423305d41 Motivate renumbering and avoid underflow.
rust-lang/rust@ad26a0b3dd Improve display of parallel jobs in rustdoc-gui tester script
rust-lang/rust@5e6da1e306 add myself to smir triage
rust-lang/rust@414135d522 Make rustc_onunimplemented export path agnostic
rust-lang/rust@6605116463 use target-arch based table
rust-lang/rust@02424e4bc5 Normalize alloc-id in tests.
rust-lang/rust@17ec3cd5bf Fix outlives suggestion for GAT in RPITIT
rust-lang/rust@7aa1b8390b coverage: Explain why we temporarily steal pending_dups
rust-lang/rust@5e5a8e7769 coverage: Inline span_bcb_dominates
rust-lang/rust@4ab4273d64 coverage: Inline prev_starts_after_next
rust-lang/rust@25e6303202 coverage: Move take_curr and note what its callers are doing
rust-lang/rust@41038dbe4a coverage: Call prev/curr less in other places
rust-lang/rust@b1c44f4a25 coverage: Call prev/curr less in to_refined_spans
rust-lang/rust@9bb27f3adf coverage: Remove redundant field prev_expn_span
rust-lang/rust@7bbe4be568 coverage: Flatten guard logic in maybe_flush_pending_dups
rust-lang/rust@97d1a9120e coverage: Flatten guard logic in maybe_push_macro_name_span
rust-lang/rust@5f1e8f9950 coverage: Simplify push_refined_span
rust-lang/rust@fa2e26285c coverage: Use DUMMY_SP instead of creating a dummy span manually
rust-lang/rust@d928d3e5d8 coverage: Rename hold_pending_dups_unless_dominated to update_pending_dups
rust-lang/rust@9b6ce4fb3c coverage: Rename check_pending_dups to maybe_flush_pending_dups
rust-lang/rust@46c545c1ba coverage: Rename check_invoked_macro_name_span to maybe_push_macro_name_span
rust-lang/rust@9d8506d27f acquire loads can be done as relaxed load; acquire fence
rust-lang/rust@9b8686d832 only guarantee for Relaxed; add ptr-size fallback
rust-lang/rust@275d5c8251 wording
rust-lang/rust@69b62ecc69 define 'read-only memory'
rust-lang/rust@07b8c10ed8 add general powerpc64le bound
rust-lang/rust@7453235feb add ARM and RISC-V values
rust-lang/rust@b5e67a00d9 document when atomic loads are guaranteed read-only
rust-lang/rust@f0f89d6d43 Duplicate ~const bounds with a non-const one in effects desugaring
rust-lang/rust@6d23ee8430 Special case iterator chain checks for suggestion
rust-lang/rust@fc78d78988 MCP636: Adapt check-cfg tests to the new syntax
rust-lang/rust@e5e95eba45 MCP636: Add simpler and more explicit syntax to check-cfg
rust-lang/rust@10ab51d69d Sort rustc_driver_impl dependencies.
rust-lang/rust@a504c0c605 Make tidy-alphabetical-{start,end} work more widely.