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Tracking Issue for frontmatter

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet 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

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

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

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

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

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.

#136889 In rust-lang/rust;

· epage opened on Feb 11, 2025

1 comment

Tracking Issue for RFC 3591: useing a function from a trait

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet 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-langRelevant to the language teamRelevant to the language team

Status: Open.

#134691 In rust-lang/rust;

· clubby789 opened on Dec 23, 2024

9 comments

Tracking issue for RFC 3617 precise capturing of types

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet 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

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

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

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

T-langRelevant to the language teamRelevant to the language team

Status: Open.

Tracking Issue

#130043 In rust-lang/rust;

· traviscross opened on Sep 6, 2024

2 comments



Tracking issue for RFC 3637: Guard patterns

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet 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

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

S-tracking-impl-incompleteStatus: The implementation is incomplete.Status: The implementation is incomplete.

T-langRelevant to the language teamRelevant to the language team

Status: Open.

Tracking Issue

#129967 In rust-lang/rust;

· traviscross opened on Sep 4, 2024

2 comments

Tracking Issue for float_semantics RFC 3514

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet 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

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

T-langRelevant to the language teamRelevant to the language team

Status: Open.

#128288 In rust-lang/rust;

· traviscross opened on Jul 27, 2024

13 comments

Tracking Issue for RFC 3467: UnsafePinned

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet 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

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

T-langRelevant to the language teamRelevant to the language team

T-opsemRelevant to the opsem teamRelevant to the opsem team

Status: Open.

#125735 In rust-lang/rust;

· traviscross opened on May 29, 2024

6 comments

Tracking Issue for RFC 3550: New range types

A-maybe-future-editionSomething we may consider for a future edition.Something we may consider for a future edition.

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet 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

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

S-tracking-impl-incompleteStatus: The implementation is incomplete.Status: The implementation is incomplete.

S-tracking-needs-documentationStatus: Needs documentation.Status: Needs documentation.

S-tracking-needs-migration-lintStatus: This item needs a migration lint.Status: This item needs a migration lint.

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

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.

Status: Open.

#123741 In rust-lang/rust;

· traviscross opened on Apr 10, 2024

13 comments



Tracking Issue for RFC 3543 patchable-function-entry

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet 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

F-patchable_function_entry#![feature(patchable_function_entry)]#![feature(patchable_function_entry)]

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: Open.

#123115 In rust-lang/rust;

· traviscross opened on Mar 27, 2024

1 comment



Tracking Issue for match ergonomics 2024 (RFC 3627)

A-patternsRelating to patterns and pattern matchingRelating to patterns and pattern matching

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet implemented.

B-unstableBlocker: Implemented in the nightly compiler and unstable.Blocker: Implemented in the nightly compiler and unstable.

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

Status: Open.

#123076 In rust-lang/rust;

· Jules-Bertholet opened on Mar 26, 2024

15 comments



Tracking Issue for rust_has_provenance

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet implemented.

B-RFC-implementedBlocker: Approved by a merged RFC and implemented but not stabilized.Blocker: Approved by a merged RFC and implemented but not stabilized.

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

Status: Open.

#121243 In rust-lang/rust;

· RalfJung opened on Feb 17, 2024

2 comments

Tracking Issue for MaybeDangling

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet 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-langRelevant to the language teamRelevant to the language team

Status: Open.

#118166 In rust-lang/rust;

· RalfJung opened on Nov 22, 2023

2 comments

Tracking Issue for gen blocks and functions

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet 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

F-gen_blocks`gen {}` expressions that produce `Iterator`s`gen {}` expressions that produce `Iterator`s

Status: Open.

#117078 In rust-lang/rust;

· oli-obk opened on Oct 23, 2023

7 comments



Tracking Issue for f16 and f128 float types

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet 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

F-f16_and_f128`#![feature(f16)]`, `#![feature(f128)]``#![feature(f16)]`, `#![feature(f128)]`

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: Open.

#116909 In rust-lang/rust;

· traviscross opened on Oct 18, 2023

36 comments



Tracking Issue for unicode and escape codes in literals

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet 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

F-mixed_utf8_literals#![feature(mixed_utf8_literals)]#![feature(mixed_utf8_literals)]

I-lang-radarItems that are on lang's radar and will need eventual work or consideration.Items that are on lang's radar and will need eventual work or consideration.

T-langRelevant to the language teamRelevant to the language team

Status: Open.

#116907 In rust-lang/rust;

· traviscross opened on Oct 18, 2023

16 comments



Tracking Issue for attributes on where-clause bounds

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet 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

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

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-langRelevant to the language teamRelevant to the language team

Status: Open.

#115590 In rust-lang/rust;

· pnkfelix opened on Sep 6, 2023

4 comments

Tracking Issue for the Rust specification

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet 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

T-langRelevant to the language teamRelevant to the language team

Status: Open.

#113527 In rust-lang/rust;

· m-ou-se opened on Jul 10, 2023

3 comments

Tracking Issue for trim-paths RFC 3127

A-backtraceArea: BacktracesArea: Backtraces

A-debuginfoArea: Debugging information in compiled programs (DWARF, PDB, etc.)Area: Debugging information in compiled programs (DWARF, PDB, etc.)

A-reproducibilityArea: Reproducible / deterministic buildsArea: Reproducible / deterministic builds

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet 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

F-trim-pathsFeature: trim-pathsFeature: trim-paths

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

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.

#111540 In rust-lang/rust;

· ehuss opened on May 13, 2023

38 comments

Tracking Issue for return type notation

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet 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

F-return_type_notation`#[feature(return_type_notation)]``#[feature(return_type_notation)]`

S-tracking-impl-incompleteStatus: The implementation is incomplete.Status: The implementation is incomplete.

T-langRelevant to the language teamRelevant to the language team

Status: Open.

#109417 In rust-lang/rust;

· compiler-errors opened on Mar 20, 2023

10 comments

Tracking Issue for Restrictions

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet 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

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

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

T-langRelevant to the language teamRelevant to the language team

Status: Open.

#105077 In rust-lang/rust;

· tmandry opened on Nov 29, 2022

28 comments

Tracking Issue for De-RFC 3307: Remove type ascription

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet 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

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

S-tracking-remove-implementationStatus: The feature needs to be removed from the Rust toolchain before this issue can be closedStatus: The feature needs to be removed from the Rust toolchain before this issue can be closed

T-langRelevant to the language teamRelevant to the language team

Status: Open.

#101728 In rust-lang/rust;

· Manishearth opened on Sep 12, 2022

7 comments



Tracking Issue for RFC 3216: "Allow using for<'a> syntax when declaring closures"

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet implemented.

B-unstableBlocker: Implemented in the nightly compiler and unstable.Blocker: Implemented in the nightly compiler and unstable.

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-closure_lifetime_binder`#![feature(closure_lifetime_binder)]``#![feature(closure_lifetime_binder)]`

S-tracking-needs-summaryStatus: It's hard to tell what's been done and what hasn't! Someone should do some investigation.Status: It's hard to tell what's been done and what hasn't! Someone should do some investigation.

T-langRelevant to the language teamRelevant to the language team

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.

#97362 In rust-lang/rust;

· pnkfelix opened on May 24, 2022

25 comments

Tracking Issue for Provider API

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet implemented.

B-RFC-implementedBlocker: Approved by a merged RFC and implemented but not stabilized.Blocker: Approved by a merged RFC and implemented but not stabilized.

B-unstableBlocker: Implemented in the nightly compiler and unstable.Blocker: Implemented in the nightly compiler and unstable.

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-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.

#96024 In rust-lang/rust;

· yaahc opened on Apr 13, 2022

53 comments



Tracking Issue for RFC 3123: Scrape code examples from examples/ directory for Rustdoc

A-rustdoc-scrape-examplesArea: The (unstable) rustdoc scrape-examples feature described in RFC 3123Area: The (unstable) rustdoc scrape-examples feature described in RFC 3123

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet 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

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.

#88791 In rust-lang/rust;

· camelid opened on Sep 9, 2021

44 comments

Tracking Issue for RFC 2528: type-changing struct update syntax

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet 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

F-type-changing-struct-update`#![feature(type_changing_struct_update)]``#![feature(type_changing_struct_update)]`

S-tracking-needs-summaryStatus: It's hard to tell what's been done and what hasn't! Someone should do some investigation.Status: It's hard to tell what's been done and what hasn't! Someone should do some investigation.

T-langRelevant to the language teamRelevant to the language team

Status: Open.

#86555 In rust-lang/rust;

· joshtriplett opened on Jun 22, 2021

6 comments

Tracking Issue for try_trait_v2, A new design for the ? desugaring (RFC#3058)

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet 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

F-try_trait_v2Tracking issue for RFC#3058Tracking issue for RFC#3058

S-tracking-design-concernsStatus: There are blocking design concerns.Status: There are blocking design concerns.

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.

Status: Open.

#84277 In rust-lang/rust;

· scottmcm opened on Apr 17, 2021

142 comments