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Rollup of 11 pull requests
Successful merges:
- rust-lang/rust#139593 (add sitemap to rust docs)
- rust-lang/rust#145819 (Port limit attributes to the new attribute parsing infrastructure)
- rust-lang/rust#146025 (compiler: Include span of too huge array with `-Cdebuginfo=2`)
- rust-lang/rust#146184 (In the rustc_llvm build script, don't consider arm64* to be 32-bit)
- rust-lang/rust#146195 (fix partial urlencoded link support)
- rust-lang/rust#146300 (Implement `Sum` and `Product` for `f16` and `f128`.)
- rust-lang/rust#146314 (mark `format_args_nl!` as `#[doc(hidden)]`)
- rust-lang/rust#146324 (const-eval: disable pointer fragment support)
- rust-lang/rust#146326 (simplify the declaration of the legacy integer modules (`std::u32` etc.))
- rust-lang/rust#146339 (Update books)
- rust-lang/rust#146343 (Weakly export `platform_version` symbols)
r? `@ghost`
`@rustbot` modify labels: rollup
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Weakly export `platform_version` symbols
The symbols `__isPlatformVersionAtLeast` and `__isOSVersionAtLeast`. This should allow linking both `compiler-rt` and `std`, which fixes https://github.com/rust-lang/rust/pull/138944#issuecomment-3266574582.
r? tgross35
CC ``@zmodem,`` could you please verify that this works for you?
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Update books
## rust-lang/nomicon
1 commits in 57ed4473660565d9357fcae176b358d7e8724ebf..f17a018b9989430967d1c58e9a12c51169abc744
2025-09-05 22:46:58 UTC to 2025-09-05 22:46:58 UTC
- Add missing "C" ABI to FFI example code (rust-lang/nomicon#501)
## rust-lang/reference
7 commits in 89f67b3c1b904cbcd9ed55e443d6fc67c8ca2769..b3ce60628c6f55ab8ff3dba9f3d20203df1c0dee
2025-09-05 20:14:36 UTC to 2025-08-26 20:17:24 UTC
- Ensure all lexical elements are SCREAMING_CASE (rust-lang/reference#1990)
- Link out to the notation from grammar summary (rust-lang/reference#1989)
- Or-patterns are extending (rust-lang/reference#1975)
- Specify lifetime extension of `match` arms and `if` consequent/`else` block tail expressions (rust-lang/reference#1981)
- clean up and properly test temporary lifetime extension in doctests (rust-lang/reference#1979)
- Update `cold` and `inline` to use the attribute template (rust-lang/reference#1907)
- Pluralize "syntax diagrams" (rust-lang/reference#1977)
## rust-lang/rust-by-example
1 commits in ad27f82c18464525c761a4a8db2e01785da59e1f..dd26bc8e726dc2e73534c8972d4dccd1bed7495f
2025-09-04 22:33:29 UTC to 2025-09-04 22:33:29 UTC
- Fix drop order explanation in trait > drop (rust-lang/rust-by-example#1953)
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simplify the declaration of the legacy integer modules (`std::u32` etc.)
This PR removes some duplicated code from the declaration of the legacy integer modules by expanding the macro which is already used to generate `MIN` and `MAX` to now generate the whole module.
This would also make the remaining steps listed in rust-lang/rust#68490 such as fully deprecating the modules or placing `#[doc(hidden)]` on them easier.
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const-eval: disable pointer fragment support
This fixes https://github.com/rust-lang/rust/issues/146291 by disabling pointer fragment support for const-eval. I want to properly fix this eventually, but won't get to it in the next few weeks, so this is an emergency patch to prevent the buggy implementation from landing on stable. The beta cutoff is on Sep 12th so if this PR lands after that, we'll need a backport.
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mark `format_args_nl!` as `#[doc(hidden)]`
The `#[unstable]` attribute of the macro already says:
> `format_args_nl` is only for internal language use and is subject to change
It does seem plausible to hide it from the `std` docs accordingly.
The PR also removes the single usage of the macro outside of `std` as it does not seem like the macro is actually needed there.
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Implement `Sum` and `Product` for `f16` and `f128`.
Tracking issue: rust-lang/rust#116909.
This PR implements `core::iter::{Sum, Product}` for `f16` and `f128`.
I'm curious as to why these two traits aren't already implemented. I've been unable to find any information about it at all, so if there is anything that currently blocks them, I would appreciate if someone could fill me in.
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fix partial urlencoded link support
Hello Rust community.
This is my first contribution, hope is useful.
While translating in Italian the rust book https://github.com/nixxo/rust-lang-book-it I noticed that the linkchecker tool was failing reporting broken links on some pages even if the link worked properly in the browser. Upon inspection I noticed that mdbook basically urlencoded the links, but not urlencoded the heading IDs resulting in a non-identical anchor/IDs pairing that linkchecker reports as non-valid.
looking at the source code for the linkchecker tool I noticed that urlencoding was done by the `small_url_encode` function in a partial way, as the name suggests. Replacing this function with a full urlencoding fixes the issue and the links are properly reported as valid.
- added full urlencoding to properly check urlencoded anchor links against non-urlencoded heading IDs
- added tests
urlecoding provided by https://crates.io/crates/urlencoding
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In the rustc_llvm build script, don't consider arm64* to be 32-bit
The build script for `rustc_llvm` needs to detect 32-bit targets so that it links against `libatomics`. To do this, it matches the target architecture against `arm`, unfortunately incorrectly matches Arm64EC, Arm64E, etc.
This change adds a check that the target arch doesn't match `arm64`.
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compiler: Include span of too huge array with `-Cdebuginfo=2`
We have a few ui tests to ensure we emit an error if we encounter too big arrays. Before this fix, compiling the tests with `-Cdebuginfo=2` would not include the spans of the instantiation sites, because the error is then emitted from a different code path that does not include the span.
Propagate the span to the error also in the debuginfo case, so the tests passes regardless of debuginfo level.
r? ``@wesleywiser`` since this is a natural continuation of https://github.com/rust-lang/rust/pull/145967 that you approved (thanks!).
cc https://github.com/rust-lang/rust/issues/61117 since this takes is one step closer to increasing `rust.debuginfo-level-tests` to `2` in the **x86_64-gnu-debug** CI job.
## Test failure output without the fix
<details>
<summary>
Here is what the test failures look like if you run the tests without the fix. (Click to expand.)
</summary>
```
$ ./x test --set rust.debuginfo-level-tests=2 tests/ui/limits/huge-array-simple-64.rs tests/ui/limits/huge-array.rs tests/ui/limits/issue-15919-64.rs
Building bootstrap
Finished `dev` profile [unoptimized] target(s) in 0.16s
/home/martin/src/rust/build/x86_64-unknown-linux-gnu/ci-llvm/bin/llvm-strip does not exist; skipping copy
Building stage1 compiler artifacts (stage0 -> stage1, x86_64-unknown-linux-gnu)
Finished `release` profile [optimized + debuginfo] target(s) in 0.40s
Creating a sysroot for stage1 compiler (use `rustup toolchain link 'name' build/host/stage1`)
Building stage1 lld-wrapper (stage0 -> stage1, x86_64-unknown-linux-gnu)
Finished `release` profile [optimized + debuginfo] target(s) in 0.08s
Building stage1 library artifacts (stage1 -> stage1, x86_64-unknown-linux-gnu)
Compiling addr2line v0.25.0
Compiling std v0.0.0 (/home/martin/src/rust/library/std)
Compiling rustc-std-workspace-std v1.99.0 (/home/martin/src/rust/library/rustc-std-workspace-std)
Compiling unicode-width v0.2.1
Compiling rustc-literal-escaper v0.0.5
Compiling proc_macro v0.0.0 (/home/martin/src/rust/library/proc_macro)
Compiling getopts v0.2.23
Compiling test v0.0.0 (/home/martin/src/rust/library/test)
Compiling sysroot v0.0.0 (/home/martin/src/rust/library/sysroot)
Finished `release` profile [optimized + debuginfo] target(s) in 14.43s
Building stage1 compiletest (stage0 -> stage1, x86_64-unknown-linux-gnu)
Finished `release` profile [optimized + debuginfo] target(s) in 0.14s
Testing stage2 compiletest suite=ui mode=ui (stage1 -> stage2, x86_64-unknown-linux-gnu)
running 6 tests
[ui] tests/ui/limits/huge-array.rs#full-debuginfo ... F
[ui] tests/ui/limits/issue-15919-64.rs#full-debuginfo ... F
[ui] tests/ui/limits/huge-array-simple-64.rs#full-debuginfo ... F
...
failures:
---- [ui] tests/ui/limits/huge-array.rs#full-debuginfo stdout ----
Saved the actual stderr to `/home/martin/src/rust/build/x86_64-unknown-linux-gnu/test/ui/limits/huge-array.full-debuginfo/huge-array.full-debuginfo.stderr`
diff of stderr:
1 error: values of the type `[[u8; 1518599999]; 1518600000]` are too big for the target architecture
- --> $DIR/huge-array.rs:9:9
- |
- LL | let s: [T; 1518600000] = [t; 1518600000];
- | ^
6
7 error: aborting due to 1 previous error
8
The actual stderr differed from the expected stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args limits/huge-array.rs`
error in revision `full-debuginfo`: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/home/martin/src/rust/build/x86_64-unknown-linux-gnu/stage1/bin/rustc" "/home/martin/src/rust/tests/ui/limits/huge-array.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/home/martin/.cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/home/martin/src/rust/vendor" "--sysroot" "/home/martin/src/rust/build/x86_64-unknown-linux-gnu/stage1" "--target=x86_64-unknown-linux-gnu" "--cfg" "full_debuginfo" "--check-cfg" "cfg(test,FALSE,no_debuginfo,full_debuginfo)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "-C" "prefer-dynamic" "--out-dir" "/home/martin/src/rust/build/x86_64-unknown-linux-gnu/test/ui/limits/huge-array.full-debuginfo" "-A" "unused" "-A" "internal_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Lnative=/home/martin/src/rust/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-Cdebuginfo=2"
stdout: none
--- stderr -------------------------------
error: values of the type `[[u8; 1518599999]; 1518600000]` are too big for the target architecture
error: aborting due to 1 previous error
------------------------------------------
---- [ui] tests/ui/limits/huge-array.rs#full-debuginfo stdout end ----
---- [ui] tests/ui/limits/issue-15919-64.rs#full-debuginfo stdout ----
Saved the actual stderr to `/home/martin/src/rust/build/x86_64-unknown-linux-gnu/test/ui/limits/issue-15919-64.full-debuginfo/issue-15919-64.full-debuginfo.stderr`
diff of stderr:
1 error: values of the type `[usize; usize::MAX]` are too big for the target architecture
- --> $DIR/issue-15919-64.rs:10:9
- |
- LL | let x = [0usize; 0xffff_ffff_ffff_ffff];
- | ^
6
7 error: aborting due to 1 previous error
8
The actual stderr differed from the expected stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args limits/issue-15919-64.rs`
error in revision `full-debuginfo`: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/home/martin/src/rust/build/x86_64-unknown-linux-gnu/stage1/bin/rustc" "/home/martin/src/rust/tests/ui/limits/issue-15919-64.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/home/martin/.cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/home/martin/src/rust/vendor" "--sysroot" "/home/martin/src/rust/build/x86_64-unknown-linux-gnu/stage1" "--target=x86_64-unknown-linux-gnu" "--cfg" "full_debuginfo" "--check-cfg" "cfg(test,FALSE,no_debuginfo,full_debuginfo)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "-C" "prefer-dynamic" "--out-dir" "/home/martin/src/rust/build/x86_64-unknown-linux-gnu/test/ui/limits/issue-15919-64.full-debuginfo" "-A" "unused" "-A" "internal_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Lnative=/home/martin/src/rust/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-Cdebuginfo=2"
stdout: none
--- stderr -------------------------------
error: values of the type `[usize; usize::MAX]` are too big for the target architecture
error: aborting due to 1 previous error
------------------------------------------
---- [ui] tests/ui/limits/issue-15919-64.rs#full-debuginfo stdout end ----
---- [ui] tests/ui/limits/huge-array-simple-64.rs#full-debuginfo stdout ----
Saved the actual stderr to `/home/martin/src/rust/build/x86_64-unknown-linux-gnu/test/ui/limits/huge-array-simple-64.full-debuginfo/huge-array-simple-64.full-debuginfo.stderr`
diff of stderr:
1 error: values of the type `[u8; 2305843011361177600]` are too big for the target architecture
- --> $DIR/huge-array-simple-64.rs:12:9
- |
- LL | let _fat: [u8; (1<<61)+(1<<31)] =
- | ^^^^
6
7 error: aborting due to 1 previous error
8
The actual stderr differed from the expected stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args limits/huge-array-simple-64.rs`
error in revision `full-debuginfo`: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/home/martin/src/rust/build/x86_64-unknown-linux-gnu/stage1/bin/rustc" "/home/martin/src/rust/tests/ui/limits/huge-array-simple-64.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/home/martin/.cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/home/martin/src/rust/vendor" "--sysroot" "/home/martin/src/rust/build/x86_64-unknown-linux-gnu/stage1" "--target=x86_64-unknown-linux-gnu" "--cfg" "full_debuginfo" "--check-cfg" "cfg(test,FALSE,no_debuginfo,full_debuginfo)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "-C" "prefer-dynamic" "--out-dir" "/home/martin/src/rust/build/x86_64-unknown-linux-gnu/test/ui/limits/huge-array-simple-64.full-debuginfo" "-A" "unused" "-A" "internal_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Lnative=/home/martin/src/rust/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-Cdebuginfo=2"
stdout: none
--- stderr -------------------------------
error: values of the type `[u8; 2305843011361177600]` are too big for the target architecture
error: aborting due to 1 previous error
------------------------------------------
---- [ui] tests/ui/limits/huge-array-simple-64.rs#full-debuginfo stdout end ----
failures:
[ui] tests/ui/limits/huge-array.rs#full-debuginfo
[ui] tests/ui/limits/issue-15919-64.rs#full-debuginfo
[ui] tests/ui/limits/huge-array-simple-64.rs#full-debuginfo
test result: FAILED. 3 passed; 3 failed; 0 ignored; 0 measured; 19720 filtered out; finished in 117.18ms
Some tests failed in compiletest suite=ui mode=ui host=x86_64-unknown-linux-gnu target=x86_64-unknown-linux-gnu
Build completed unsuccessfully in 0:00:17
```
</details>
As can be seen, the span info is missing with debuginfo=2 without the fix.
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Port limit attributes to the new attribute parsing infrastructure
Doesn't pass tests, to be rebased on https://github.com/rust-lang/rust/pull/145792 which will solve that
r? `@fmease`
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add sitemap to rust docs
attempt to mitigate https://github.com/rust-lang/rust/issues/104670
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compiler: Add Windows resources to rustc-main and rustc_driver
Adds Windows resources with the rust version information to rustc-main.exe and rustc_driver.dll
Invokes `rc.exe` directly, rather than using one of the crates from the ecosystem to avoid adding dependencies.
A new internal `rustc_windows_rc` crate has the common build script machinery for locating `rc.exe` and constructing the resource script
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Update tracing and fix binary regression
Previous attempts (rust-lang/rust#127316, rust-lang/rust#134770) saw binary size regressions, this was root caused to <https://github.com/tokio-rs/tracing/pull/2553> which changed the behavior of the `max_level_info` feature flag to match the docs (i.e., that flag only applies for debug builds and `release_max_level_info` applies for release builds).
This change bumps the `tracing` version and sets both `max_level_info` and `release_max_level_info` when to match rustc's own `max_level_info`.
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eagerly compute `sub_unification_table` again
Previously called `sub_relations`. We still only using them for diagnostics right now. This mostly reverts rust-lang/rust#119989. Necessary for type inference guidance due to not-yet defined opaque types, cc https://github.com/rust-lang/trait-system-refactor-initiative/issues/182.
We could use them for cycle detection in generalization and it seems desirable to do so in the future. However, this is unsound with the old trait solver as its cache does not track these `sub_unification_table` in any way.
We now properly track the `sub_unification_table` when canonicalizing so using them in the new solver is totally sound and the performance impact is far more manageable than I thought back in rust-lang/rust#119989.
r? `@compiler-errors`
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The symbols __isPlatformVersionAtLeast and __isOSVersionAtLeast.
This allows the user to link both compiler_rt and std.
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- added full urlencoding to properly check urlencoded anchor links against non-urlencoded heading IDs
- added tests
urlecoding provided by https://crates.io/crates/urlencoding
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Rollup of 7 pull requests
Successful merges:
- rust-lang/rust#146111 (Migrate more things in the new solver to specific `DefId`s)
- rust-lang/rust#146298 (GVN: Ensure indirect is first projection in try_as_place.)
- rust-lang/rust#146299 (docs(std): add error docs for path canonicalize)
- rust-lang/rust#146310 (Allow static regions in `type_name`.)
- rust-lang/rust#146313 (Some `rustc_middle` cleanups)
- rust-lang/rust#146319 (Fix typo in default.rs)
- rust-lang/rust#146320 (rustc-dev-guide subtree update)
r? `@ghost`
`@rustbot` modify labels: rollup
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rustc-dev-guide subtree update
Subtree update of `rustc-dev-guide` to https://github.com/rust-lang/rustc-dev-guide/commit/d03ffd422704a69078a26b57fecff058eb4161dd.
Created using https://github.com/rust-lang/josh-sync.
r? `@ghost`
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Fix typo in default.rs
This sentence currently reads:
> Rust implements `Default` for various primitives types.
I think it should just be "primitive types".
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Some `rustc_middle` cleanups
Minor improvements I found while looking through this code.
r? `@BoxyUwU`
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Allow static regions in `type_name`.
Fixes rust-lang/rust#146249.
r? `@lcnr`
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docs(std): add error docs for path canonicalize
This PR adds the missing error documentation for both [Path.canonicalize](https://doc.rust-lang.org/std/path/struct.Path.html#method.canonicalize) and [PathBuf.canonicalize](https://doc.rust-lang.org/std/path/struct.PathBuf.html#method.canonicalize) methods. Since both methods are wappers around [fs::canonicalize](https://doc.rust-lang.org/std/fs/fn.canonicalize.html), the error doc is copied directly from that function.
This makes it faster to find what errors might arise when calling `path.canonicalize` or `path_buf.canonicalize` in the editor itself without needing to drill down to the `fs::canonicalzie` docs.
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GVN: Ensure indirect is first projection in try_as_place.
I haven't found any report for this bug on existing code, but managed to trigger it with rust-lang/rust#143333
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Migrate more things in the new solver to specific `DefId`s
Continuation of https://github.com/rust-lang/rust/pull/145377. I migrated the rest of the types, except aliases.
Aliases are problematic because opaques and associated types share the same type in the new solver. `@jackh726,` `@lcnr,` `@ShoyuVanilla` I'd like to hear ideas here. Anyway, even if we do nothing with them we already got a substantial improvement.
r? types
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improve c-variadic error reporting
tracking issue: https://github.com/rust-lang/rust/issues/44930
The parts of https://github.com/rust-lang/rust/pull/143546 that don't require any particular knowledge about c-variadic functions.
This prepares the way for rejecting c-variadic functions that are also coroutines, safe functions, or associated functions.
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Fixes #146249.
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Don't include ASCII characters in Unicode tables
Split off from https://github.com/rust-lang/rust/pull/145219
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clarify typo pr guidance
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Rustc pull update
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Pull recent changes from https://github.com/rust-lang/rust via Josh.
Upstream ref: 2f3f27bf79ec147fec9d2e7980605307a74067f4
Filtered ref: 82a5eafbafdb98eae68193600732388ae4135756
Upstream diff: https://github.com/rust-lang/rust/compare/a1dbb443527bd126452875eb5d5860c1d001d761...2f3f27bf79ec147fec9d2e7980605307a74067f4
This merge was created using https://github.com/rust-lang/josh-sync.
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