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Show whether <code>?Sized</code> parameters are actually <code>Sized</code>

A-rustdoc-jsonArea: Rustdoc JSON backendArea: Rustdoc JSON backend

perf-regressionPerformance regression.Performance regression.

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.

T-rustdoc-frontendRelevant to the rustdoc-frontend team, which will review and decide on the web UI/UX output.Relevant to the rustdoc-frontend team, which will review and decide on the web UI/UX output.

Status: Draft (not ready).

rust-lang/rustnumber 143559

#143559 In rust-lang/rust;

· obi1kenobi opened on Jul 7, 2025

[experiment] Consider WF of coroutine witness when proving outlives assumptions

perf-regressionPerformance regression.Performance regression.

S-waiting-on-craterStatus: Waiting on a crater run to be completed.Status: Waiting on a crater 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: Open (in progress).

rust-lang/rustnumber 143545

#143545 In rust-lang/rust;

· compiler-errors opened on Jul 6, 2025

resolve: Merge <code>NameBindingKind::Module</code> into <code>NameBindingKind::Res</code>

perf-regressionPerformance regression.Performance regression.

S-waiting-on-reviewStatus: Awaiting review from the assignee but also interested parties.Status: Awaiting review from the assignee but also interested parties.

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: Open (in progress).

rust-lang/rustnumber 143458

#143458 In rust-lang/rust;

· petrochenkov opened on Jul 4, 2025

Unquerify extern_mod_stmt_cnum.

A-attributesArea: Attributes (`#[…]`, `#![…]`)Area: Attributes (`#[…]`, `#![…]`)

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 143374

#143374 In rust-lang/rust;

· cjgillot opened on Jul 3, 2025

Unquerify maybe_unused_trait_imports.

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 143373

#143373 In rust-lang/rust;

· cjgillot opened on Jul 3, 2025

Prehash visibilities in resolver

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 143371

#143371 In rust-lang/rust;

· cjgillot opened on Jul 3, 2025

Retire hir::*ItemRef.

A-attributesArea: Attributes (`#[…]`, `#![…]`)Area: Attributes (`#[…]`, `#![…]`)

perf-regressionPerformance regression.Performance regression.

S-waiting-on-reviewStatus: Awaiting review from the assignee but also interested parties.Status: Awaiting review from the assignee but also interested parties.

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 143357

#143357 In rust-lang/rust;

· cjgillot opened on Jul 3, 2025

[TOY] Extend GVN to perform local value numbering.

A-mir-opt-GVNArea: MIR opt Global Value Numbering (GVN)Area: MIR opt Global Value Numbering (GVN)

perf-regressionPerformance regression.Performance regression.

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 143333

#143333 In rust-lang/rust;

· cjgillot opened on Jul 2, 2025

Avoid loading HIR for check_well_formed on type declarations

perf-regressionPerformance regression.Performance regression.

S-waiting-on-reviewStatus: Awaiting review from the assignee but also interested parties.Status: Awaiting review from the assignee but also interested parties.

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: Open (in progress).

rust-lang/rustnumber 143328

#143328 In rust-lang/rust;

· oli-obk opened on Jul 2, 2025

pub async fn impl is monomorphized when func itself is monomorphized

perf-regressionPerformance regression.Performance regression.

S-waiting-on-reviewStatus: Awaiting review from the assignee but also interested parties.Status: Awaiting review from the assignee but also interested parties.

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: Open (in progress).

rust-lang/rustnumber 143290

#143290 In rust-lang/rust;

· azhogin opened on Jul 1, 2025

Detect unwind-free functions in MIR

perf-regressionPerformance regression.Performance regression.

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 143167

#143167 In rust-lang/rust;

· Mark-Simulacrum opened on Jun 28, 2025

<code>proven_via</code> into query response

perf-regressionPerformance regression.Performance regression.

S-waiting-on-reviewStatus: Awaiting review from the assignee but also interested parties.Status: Awaiting review from the assignee but also interested parties.

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 142953

#142953 In rust-lang/rust;

· lcnr opened on Jun 24, 2025