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Remove chunk size from each chunk in <code>ChunkedBitSet</code>.

S-waiting-on-authorStatus: This is awaiting some action (such as code changes or more information) from the author.Status: This is awaiting some action (such as code changes or more information) from the author.

S-waiting-on-perfStatus: Waiting on a perf run to be completed.Status: Waiting on a perf run to be completed.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Draft (not ready).

rust-lang/rustnumber 145480

#145480 In rust-lang/rust;

· cjgillot opened on Aug 16, 2025

[EXPERIMENT] Introduce <code>TypingMode::Codegen</code> to avoid layout cycles

S-waiting-on-authorStatus: This is awaiting some action (such as code changes or more information) from the author.Status: This is awaiting some action (such as code changes or more information) from the author.

S-waiting-on-perfStatus: Waiting on a perf run to be completed.Status: Waiting on a perf run to be completed.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

WG-trait-system-refactorThe Rustc Trait System Refactor Initiative (-Znext-solver)The Rustc Trait System Refactor Initiative (-Znext-solver)

Status: Draft (not ready).

rust-lang/rustnumber 145477

#145477 In rust-lang/rust;

· cjgillot opened on Aug 16, 2025

[WIP] Reject invalid literal suffixes in tuple indexing, tuple struct indexing, and struct field name position

A-grammarArea: The grammar of RustArea: The grammar of Rust

A-parserArea: The lexing & parsing of Rust source code to an ASTArea: The lexing & parsing of Rust source code to an AST

A-proc-macrosArea: Procedural macrosArea: Procedural macros

A-tidyArea: The tidy toolArea: The tidy tool

needs-craterThis change needs a crater run to check for possible breakage in the ecosystem.This change needs a crater run to check for possible breakage in the ecosystem.

needs-fcpThis change is insta-stable, or significant enough to need a team FCP to proceed.This change is insta-stable, or significant enough to need a team FCP to proceed.

S-waiting-on-authorStatus: This is awaiting some action (such as code changes or more information) from the author.Status: This is awaiting some action (such as code changes or more information) from the author.

T-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

T-langRelevant to the language teamRelevant to the language team

Status: Draft (not ready).

rust-lang/rustnumber 145463

#145463 In rust-lang/rust;

· jieyouxu opened on Aug 15, 2025

Speedup <code>copy_src_dirs</code> in bootstrap

S-waiting-on-authorStatus: This is awaiting some action (such as code changes or more information) from the author.Status: This is awaiting some action (such as code changes or more information) from the author.

T-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)

Status: Open (in progress).

rust-lang/rustnumber 145460

#145460 In rust-lang/rust;

· Kobzol opened on Aug 15, 2025

compiletest: Require explicit <code>--filecheck-prefixes</code>

A-compiletestArea: The compiletest test runnerArea: The compiletest test runner

A-testsuiteArea: The testsuite used to check the correctness of rustcArea: The testsuite used to check the correctness of rustc

PG-exploit-mitigationsProject group: Exploit mitigationsProject group: Exploit mitigations

rla-silencedSilences rust-log-analyzer postings to the PR it's added on.Silences rust-log-analyzer postings to the PR it's added on.

S-waiting-on-authorStatus: This is awaiting some action (such as code changes or more information) from the author.Status: This is awaiting some action (such as code changes or more information) from the author.

T-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Draft (not ready).

rust-lang/rustnumber 145428

#145428 In rust-lang/rust;

· tgross35 opened on Aug 15, 2025

Unify wording of resolve error

S-waiting-on-authorStatus: This is awaiting some action (such as code changes or more information) from the author.Status: This is awaiting some action (such as code changes or more information) from the author.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

T-rustdocRelevant to the rustdoc team, which will review and decide on the PR/issue.Relevant to the rustdoc team, which will review and decide on the PR/issue.

Status: Open (in progress).

rust-lang/rustnumber 145399

#145399 In rust-lang/rust;

· estebank opened on Aug 14, 2025

Implement feature <code>int_lowest_highest_one</code> for integer and NonZero types

S-waiting-on-authorStatus: This is awaiting some action (such as code changes or more information) from the author.Status: This is awaiting some action (such as code changes or more information) from the author.

T-libsRelevant to the library team, which will review and decide on the PR/issue.Relevant to the library team, which will review and decide on the PR/issue.

Status: Open (in progress).

rust-lang/rustnumber 145381

#145381 In rust-lang/rust;

· Gnurou opened on Aug 14, 2025

Remove default config from bootstrap

S-waiting-on-authorStatus: This is awaiting some action (such as code changes or more information) from the author.Status: This is awaiting some action (such as code changes or more information) from the author.

T-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)

Status: Draft (not ready).

rust-lang/rustnumber 145352

#145352 In rust-lang/rust;

· Shourya742 opened on Aug 13, 2025

[WIP] Underefer refactoring

S-waiting-on-authorStatus: This is awaiting some action (such as code changes or more information) from the author.Status: This is awaiting some action (such as code changes or more information) from the author.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Draft (not ready).

rust-lang/rustnumber 145344

#145344 In rust-lang/rust;

· beepster4096 opened on Aug 13, 2025

Dogfood <code>-Zno-embed-metadata</code> in the compiler

A-testsuiteArea: The testsuite used to check the correctness of rustcArea: The testsuite used to check the correctness of rustc

perf-regressionPerformance regression.Performance regression.

S-waiting-on-authorStatus: This is awaiting some action (such as code changes or more information) from the author.Status: This is awaiting some action (such as code changes or more information) from the author.

T-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)

Status: Draft (not ready).

rust-lang/rustnumber 145343

#145343 In rust-lang/rust;

· Kobzol opened on Aug 13, 2025

[WIP]: Do not store tag in uninhabited enum variants, or in the single inhabited variant.

A-LLVMArea: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues.Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues.

S-waiting-on-authorStatus: This is awaiting some action (such as code changes or more information) from the author.Status: This is awaiting some action (such as code changes or more information) from the author.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Draft (not ready).

rust-lang/rustnumber 145337

#145337 In rust-lang/rust;

· zachs18 opened on Aug 13, 2025

[TOY] Run MIR opts before coroutine state transform

perf-regressionPerformance regression.Performance regression.

S-waiting-on-authorStatus: This is awaiting some action (such as code changes or more information) from the author.Status: This is awaiting some action (such as code changes or more information) from the author.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Draft (not ready).

rust-lang/rustnumber 145330

#145330 In rust-lang/rust;

· cjgillot opened on Aug 13, 2025