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Welcome to the Rust Programming Language Internals Forum
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0
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44687
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June 25, 2014
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Named Arguments are Just Structs: Anonymous Struct Parameters
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35
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1482
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November 2, 2026
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Yet Another Performance Footgun in Rust - Multithreading Lock Edition
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38
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543
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November 2, 2026
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Would it make sense for never to implement Iterator?
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12
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416
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November 2, 2026
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Optimising `assert_eq` & `assert_ne`
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3
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190
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November 1, 2026
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Attempting to clean up the feature activation syntax?
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11
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421
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October 31, 2026
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Check-only Clippy & Fmt for CI/CD
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4
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348
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October 30, 2026
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Clippy wants a Safety section for functions marked with target_feature
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2
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340
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October 30, 2026
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SAFETY comments - nomicon
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3
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244
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October 30, 2026
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Rust is bad in the description, solutions must be explained to the description
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2
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514
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October 29, 2026
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Why `.insert_entry()` is private for `HashSet` and `BTreeSet` Entry APIs?
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3
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368
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October 29, 2026
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Less restrictive mutability rules, again
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47
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995
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October 28, 2026
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Impl mut and override for incremental, scoped reuse of existing impls
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16
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267
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October 27, 2026
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`read_le` and `read_be` exist but `write_le` and `write_be` don't
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3
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345
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October 26, 2026
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Adding any trait to any type is a breaking change
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5
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423
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October 26, 2026
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Could we get guarantee that all pointer-like types have the same representation?
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19
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1009
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October 25, 2026
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Is this closure_lifetime_binder unsoundness already covered by #25860?
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2
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163
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October 25, 2026
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RFC 3678: Why should final rule out downstream use cases that library authors never anticipated?
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6
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312
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October 24, 2026
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Feature Request: Use Arc in constants
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17
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580
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October 24, 2026
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💡 Proposal: Add `include_c_str!` Macro to Rust
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9
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874
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October 21, 2026
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Cargo / crate statistics on nixpkgs of 2300 rust projects
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2
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335
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October 19, 2026
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Code coverage ignore comments
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2
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222
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October 19, 2026
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Should CommandExt::exec be safe?
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3
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343
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October 18, 2026
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Inline specialization
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4
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503
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October 17, 2026
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Should std have an Arena type?
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21
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1152
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October 15, 2026
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Rust 1.99.1 pre-release testing
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1
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397
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October 13, 2026
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Adding retain_unsorted or similar
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11
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828
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October 13, 2026
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Quick Rust Improvement Ideas — Language & Std (Community Brainstorm)
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84
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2106
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October 7, 2026
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Add a formatting specifier to limit the max length displayed of collections
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5
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502
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October 11, 2026
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VecDeque should expose head via head_index() (or similarly named)
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15
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911
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October 9, 2026
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