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Tracking Issue for HashTable

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

S-tracking-unimplementedStatus: The feature has not been implemented.Status: The feature has not been implemented.

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

Status: Open.

#158111 In rust-lang/rust;

· RustyYato opened on Jun 19, 2026

Tracking Issue for -Ctarget-feature=+backchain

A-rust-for-linuxRelevant for the Rust-for-Linux projectRelevant for the Rust-for-Linux project

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

O-SystemZTarget: SystemZ processors (s390x)Target: SystemZ processors (s390x)

Status: Open.

#158014 In rust-lang/rust;

· fneddy opened on Jun 17, 2026

Tracking issue for core::marker::Tuple

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

T-langRelevant to the language teamRelevant to the language team

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

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

Status: Open.

#157987 In rust-lang/rust;

· peter-lyons-kehl opened on Jun 16, 2026

Tracking Issue for Vec::as_non_null()

A-collectionsArea: `std::collections`Area: `std::collections`

A-raw-pointersArea: raw pointers, MaybeUninit, NonNullArea: raw pointers, MaybeUninit, NonNull

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

S-tracking-unimplementedStatus: The feature has not been implemented.Status: The feature has not been implemented.

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

Status: Open.

#157843 In rust-lang/rust;

· theemathas opened on Jun 13, 2026

Tracking issue for MCP 993: Set requirements for windows-gnu

B-MCP-approvedBlocker: Approved by an accepted MCP but not yet fully implemented.Blocker: Approved by an accepted MCP but not yet fully implemented.

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

S-tracking-unimplementedStatus: The feature has not been implemented.Status: The feature has not been implemented.

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.

#157842 In rust-lang/rust;

· rustbot opened on Jun 13, 2026

Tracking issue for MCP 996: Test new solver and polonius alpha on CI

B-MCP-approvedBlocker: Approved by an accepted MCP but not yet fully implemented.Blocker: Approved by an accepted MCP but not yet fully implemented.

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

S-tracking-unimplementedStatus: The feature has not been implemented.Status: The feature has not been implemented.

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.

#157780 In rust-lang/rust;

· rustbot opened on Jun 11, 2026

Tracking issue for MCP 994: Add -Zllvm-target-feature target *modifier* to directly set LLVM-level target features, and deprecate doing that with -Ctarget-feature

B-MCP-approvedBlocker: Approved by an accepted MCP but not yet fully implemented.Blocker: Approved by an accepted MCP but not yet fully implemented.

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

S-tracking-unimplementedStatus: The feature has not been implemented.Status: The feature has not been implemented.

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.

#157753 In rust-lang/rust;

· rustbot opened on Jun 11, 2026

Tracking Issue for evaluating macos-26 runner images

A-CIArea: Our Github Actions CIArea: Our Github Actions CI

A-github-actionsArea: GitHub Actions (GHA)Area: GitHub Actions (GHA)

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

O-macosOperating system: macOSOperating system: macOS

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

Status: Open.

#157687 In rust-lang/rust;

· jieyouxu opened on Jun 10, 2026

Tracking issue for documenting individual built-in inert attributes in the standard library using #[doc(attribute = "…")]

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

A-docsArea: Documentation for any part of the project, including the compiler, standard library, and toolsArea: Documentation for any part of the project, including the compiler, standard library, and tools

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

E-help-wantedCall for participation: Help is requested to fix this issue.Call for participation: Help is requested to fix this issue.

T-lang-docsRelevant to the lang-docs team.Relevant to the lang-docs team.

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.

#157604 In rust-lang/rust;

· fmease opened on Jun 8, 2026

Tracking issue for MCP 950: Add flag to pass MSRV/package.rust-version for use by lints

B-MCP-approvedBlocker: Approved by an accepted MCP but not yet fully implemented.Blocker: Approved by an accepted MCP but not yet fully implemented.

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

S-tracking-needs-to-bakeStatus: The implementation is "complete" but it needs time to bake.Status: The implementation is "complete" but it needs time to bake.

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.

#157574 In rust-lang/rust;

· rustbot opened on Jun 7, 2026

Tracking Issue for xdg_basedir

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

S-tracking-unimplementedStatus: The feature has not been implemented.Status: The feature has not been implemented.

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

Status: Open.

#157515 In rust-lang/rust;

· CAD97 opened on Jun 6, 2026

Tracking Issue for extern "tail" calling convention

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

F-rust_tail_cc`#![feature(rust_tail_cc)]``#![feature(rust_tail_cc)]`

Status: Open.

#157427 In rust-lang/rust;

· WaffleLapkin opened on Jun 4, 2026