Search results

Tracking Issue for -Z hint-mostly-unused

-Zhint-mostly-unusedUnstable flag: -Z hint-mostly-unusedUnstable flag: -Z hint-mostly-unused

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

#144055 In rust-lang/rust;

· jieyouxu opened on Jul 17, 2025

Tracking Issue for super let

B-experimentalBlocker: In-tree experiment; RFC pending, not yet approved or unneeded (requires FCP to stabilize).Blocker: In-tree experiment; RFC pending, not yet approved or unneeded (requires FCP to stabilize).

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-super_letit's super, let's go!it's super, let's go!

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

Status: Open.

#139076 In rust-lang/rust;

· m-ou-se opened on Mar 28, 2025

9 comments

Tracking Issue for --print=supported-crate-types

A-CLIArea: Command-line interface (CLI) to the compilerArea: Command-line interface (CLI) to the compiler

A-print-requestsArea: print requests (`--print=...`)Area: print requests (`--print=...`)

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-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.

#138640 In rust-lang/rust;

· jieyouxu opened on Mar 18, 2025

3 comments

Tracking Issue for naked_functions_target_feature

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

A-nakedArea: `#[naked]`, prologue and epilogue-free, functions, https://git.io/vAzzSArea: `#[naked]`, prologue and epilogue-free, functions, https://git.io/vAzzS

A-target-featureArea: Enabling/disabling target features like AVX, Neon, etc.Area: Enabling/disabling target features like AVX, Neon, etc.

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

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

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.

#138568 In rust-lang/rust;

· folkertdev opened on Mar 16, 2025

1 comment

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.

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

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

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

4 comments

Tracking issue for RFC 3681: Default field values

1 / 1100% completed

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

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

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.

#132162 In rust-lang/rust;

· estebank opened on Oct 25, 2024

31 comments

Tracking Issue for mergeable rustdoc cross-crate info

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-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.

Tracking Issue

#130676 In rust-lang/rust;

· camelid opened on Sep 21, 2024

Tracking Issue for offset_of_slice

B-experimentalBlocker: In-tree experiment; RFC pending, not yet approved or unneeded (requires FCP to stabilize).Blocker: In-tree experiment; RFC pending, not yet approved or unneeded (requires FCP to stabilize).

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

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

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.

#126151 In rust-lang/rust;

· RalfJung opened on Jun 8, 2024

Tracking implementation for MC/DC

0 / 20% completed

A-code-coverageArea: Source-based code coverage (-Cinstrument-coverage)Area: Source-based code coverage (-Cinstrument-coverage)

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-coverage-mcdcMC/DC coverage via -Cinstrument-coverage with -Zcoverage-options=mcdcMC/DC coverage via -Cinstrument-coverage with -Zcoverage-options=mcdc

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

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.

#124144 In rust-lang/rust;

· ZhuUx opened on Apr 19, 2024

32 comments

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 for await loops

B-experimentalBlocker: In-tree experiment; RFC pending, not yet approved or unneeded (requires FCP to stabilize).Blocker: In-tree experiment; RFC pending, not yet approved or unneeded (requires FCP to stabilize).

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

T-langRelevant to the language teamRelevant to the language team

WG-asyncWorking group: Async & awaitWorking group: Async & await

Status: Open.

#118898 In rust-lang/rust;

· eholk opened on Dec 13, 2023

1 comment

Tracking Issue for Never Patterns (never_patterns)

A-exhaustiveness-checkingRelating to exhaustiveness / usefulness checking of patternsRelating to exhaustiveness / usefulness checking of patterns

B-experimentalBlocker: In-tree experiment; RFC pending, not yet approved or unneeded (requires FCP to stabilize).Blocker: In-tree experiment; RFC pending, not yet approved or unneeded (requires FCP to stabilize).

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-never_patterns`#![feature(never_patterns)]``#![feature(never_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.

#118155 In rust-lang/rust;

· Nadrieril opened on Nov 22, 2023

42 comments

Tracking issue for generic const items

B-experimentalBlocker: In-tree experiment; RFC pending, not yet approved or unneeded (requires FCP to stabilize).Blocker: In-tree experiment; RFC pending, not yet approved or unneeded (requires FCP to stabilize).

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

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.

#113521 In rust-lang/rust;

· fmease opened on Jul 10, 2023

1 comment



Tracking issue for lazy type aliases

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

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

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

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

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-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.

#112792 In rust-lang/rust;

· GuillaumeGomez opened on Jun 19, 2023

5 comments



Tracking Issue for non-lifetime binders

B-experimentalBlocker: In-tree experiment; RFC pending, not yet approved or unneeded (requires FCP to stabilize).Blocker: In-tree experiment; RFC pending, not yet approved or unneeded (requires FCP to stabilize).

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

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

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.

#108185 In rust-lang/rust;

· compiler-errors opened on Feb 17, 2023

10 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 asm_experimental_arch

A-inline-assemblyArea: Inline assembly (`asm!(…)`)Area: Inline assembly (`asm!(…)`)

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-asm`#![feature(asm)]` (not `llvm_asm`)`#![feature(asm)]` (not `llvm_asm`)

Status: Open.

#93335 In rust-lang/rust;

· Amanieu opened on Jan 26, 2022

7 comments

Tracking Issue for asm_unwind

A-inline-assemblyArea: Inline assembly (`asm!(…)`)Area: Inline assembly (`asm!(…)`)

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-asm`#![feature(asm)]` (not `llvm_asm`)`#![feature(asm)]` (not `llvm_asm`)

Status: Open.

#93334 In rust-lang/rust;

· Amanieu opened on Jan 26, 2022

2 comments

Tracking issue for function attribute #[coverage]

0 / 10% completed

A-code-coverageArea: Source-based code coverage (-Cinstrument-coverage)Area: Source-based code coverage (-Cinstrument-coverage)

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.

#84605 In rust-lang/rust;

· richkadel opened on Apr 27, 2021

1

128 comments

Tracking Issue for backtrace_frames

A-backtraceArea: BacktracesArea: Backtraces

A-error-handlingArea: Error handlingArea: Error handling

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

Libs-TrackedLibs issues that are tracked on the team's project board.Libs issues that are tracked on the team's project board.

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.

#79676 In rust-lang/rust;

· seanchen1991 opened on Dec 3, 2020

18 comments

Tracking Issue for remainder methods for str split iterators

A-iteratorsArea: IteratorsArea: Iterators

A-strArea: str and StringArea: str and String

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

Libs-TrackedLibs issues that are tracked on the team's project board.Libs issues that are tracked on the team's project board.

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.

#77998 In rust-lang/rust;

· WaffleLapkin opened on Oct 15, 2020

19 comments

Tracking Issue for -Z codegen-backend

A-CLIArea: Command-line interface (CLI) to the compilerArea: Command-line interface (CLI) to the compiler

A-codegenArea: Code generationArea: Code generation

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

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

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.

#77933 In rust-lang/rust;

· XAMPPRocky opened on Oct 14, 2020

3 comments

static containing UnsafeCell can circumvent const-checking with certain feature gates

A-const-evalArea: Constant evaluation, covers all const contexts (static, const fn, ...)Area: Constant evaluation, covers all const contexts (static, const fn, ...)

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

C-bugCategory: This is a bug.Category: This is a bug.

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.

#77353 In rust-lang/rust;

· ecstatic-morse opened on Sep 30, 2020



Tracking issue for RFC 2963: rustdoc JSON backend

2 / 540% completed

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

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-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.

Tracking Issue

#76578 In rust-lang/rust;

· Manishearth opened on Sep 10, 2020

21 comments