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Leverage derive macro AllVariants & generated assoc const ALL_VARIANTS for CLI error+help messages

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

A-diagnosticsArea: Messages for errors, warnings, and lintsArea: Messages for errors, warnings, and lints

C-cleanupCategory: PRs that clean code up or issues documenting cleanup.Category: PRs that clean code up or issues documenting cleanup.

C-enhancementCategory: An issue proposing an enhancement or a PR with one.Category: An issue proposing an enhancement or a PR with one.

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

E-tediousCall for participation: An issue involves lots of work and is better handled as many small tasks.Call for participation: An issue involves lots of work and is better handled as many small tasks.

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.

#155677 In rust-lang/rust;

· fmease opened on Apr 23, 2026

rustdoc rejects (instead of ignoring) some unneeded rustc command-line flags like -l...

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

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

needs-triageThis issue may need triage. Remove it if it has been sufficiently triaged.This issue may need triage. Remove it if it has been sufficiently triaged.

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.

#153318 In rust-lang/rust;

· anforowicz opened on Mar 3, 2026

rustdoc: add --print option

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=...`)

A-run-makeArea: port run-make Makefiles to rmake.rsArea: port run-make Makefiles to rmake.rs

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 151618

#151618 In rust-lang/rust;

· ShE3py opened on Jan 24, 2026

Tracking Issue for -Zcache-proc-macros

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

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.

#151364 In rust-lang/rust;

· Kobzol opened on Jan 19, 2026

Add -Zjit-mode flag

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

A-codegenArea: Code generationArea: Code generation

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: Open (in progress).

rust-lang/rustnumber 151009

#151009 In rust-lang/rust;

· bjorn3 opened on Jan 12, 2026

--verbose does nothing

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

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.

#148323 In rust-lang/rust;

· Jamesbarford opened on Oct 31, 2025

rustdoc: Tracking issue for command-line flag --no-capture

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

A-doctestsArea: Documentation tests, run by rustdocArea: Documentation tests, run by rustdoc

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-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-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.

#148116 In rust-lang/rust;

· fmease opened on Oct 25, 2025

Some Linux targets build failed prompt '--- stderr error: unknown unstable option: linker-features'

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

A-diagnosticsArea: Messages for errors, warnings, and lintsArea: Messages for errors, warnings, and lints

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.

#143765 In rust-lang/rust;

· Wyvern opened on Jul 11, 2025

Please document how many times a compiler flag is recognized, or stop for more occurences than needed

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

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

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.

#143312 In rust-lang/rust;

· zjp-CN opened on Jul 2, 2025

No way to suppress all third-party crate warnings **except** a few selected warnings

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

A-lint-levelsArea: lint levelsArea: lint levels

A-lintsArea: Lints (warnings about flaws in source code) such as unused_mut.Area: Lints (warnings about flaws in source code) such as unused_mut.

C-feature-requestCategory: A feature request, i.e: not implemented / a PR.Category: A feature request, i.e: not implemented / a PR.

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.

#143108 In rust-lang/rust;

· anforowicz opened on Jun 27, 2025

rustdoc +nightly -Zhelp shows rustc unstable-options

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

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

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.

#142646 In rust-lang/rust;

· aDotInTheVoid opened on Jun 17, 2025

-Z time-passes produces confusing output

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

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

requires-nightlyThis issue requires a nightly compiler in some way. When possible, use a F-* label instead.This issue requires a nightly compiler in some way. When possible, use a F-* label instead.

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.

#142523 In rust-lang/rust;

· JohnScience opened on Jun 15, 2025