Reference: all goals and roadmaps

This section contains the complete lists of application areas, roadmaps, and goals for 2026:

• A goal is a specific feature or project.
• Goals are collected into larger roadmaps that tell a more complete story. A single goal can be involved in many roadmaps.
• Roadmaps are themselves organized into distinct application areas.

Application areas

Roadmaps

Goals

Just because a goal is listed on this list does not mean the goal has been accepted. The owner of the goal process makes the final decisions on which goals to include and prepares an RFC to ask approval from the teams.

Goals by size

Large goals

Large goals require the engagement of entire team(s). The teams that need to engage with the goal are highlighted in bold.

Goal	PoC	Team	Champion
Arbitrary Self Types	Ding Xiang Fei	types	Jack Huey
		lang-docs	TC
		lang	Tyler Mandry
		libs-api	n/a
		libs	n/a
build-std	David Wood	cargo
		compiler	n/a
		crates-io	n/a
		libs	n/a
Const Generics	Boxy	lang	Niko Matsakis
		types	Boxy
		compiler	n/a
Stabilize Const Traits	Deadbeef	lang	TC
		types	Oliver Scherer
		compiler	n/a
Architectural groundwork for expansion-time evaluation	Tyler Mandry	compiler	Vadim Petrochenkov
		types	Oliver Scherer
Field Projections	Benno Lossin	lang	Tyler Mandry
		compiler	Ding Xiang Fei
		types	Rémy Rakic
		libs-api	n/a
		libs	n/a
		opsem	n/a
Evolving the standard library API across editions	Amanieu d’Antras	edition
		libs-api
		compiler
		rustdoc
		lang	n/a
		types	n/a
MIR move elimination	Amanieu d’Antras	opsem
		compiler
		wg-mir-opt
		lang	n/a
Immobile types and guaranteed destructors	Jack Huey	lang
		types	lcnr
Stabilize the next-generation trait solver	lcnr	types	lcnr
		lang	Niko Matsakis
Promoting Parallel Front End	Sparrow Li	wg-parallel-rustc
		compiler	n/a
Stabilize the polonius alpha analysis	Rémy Rakic	types	Jack Huey
Redesigning super let: Flexible Temporary Lifetime Extension	dianne	lang
		compiler
		libs	n/a
reflection and comptime	Oliver Scherer	lang	Scott McMurray
		compiler	Oliver Scherer
		libs-api	Josh Triplett
		types	n/a
Normative Documentation for Sound unsafe Rust	Pete LeVasseur	opsem	Ralf Jung
		lang-docs	n/a
		lang	n/a
		libs-api	n/a
Stabilize concrete type specialization	Tyler Mandry	types
		lang
		compiler	n/a
		libs	n/a
		opsem	n/a
Stabilize FLS Release Cadence	Pete LeVasseur	fls
		spec	n/a

Medium goals

Medium goals require support from an individual, the team champion.

Goal	PoC	Team	Champion
Box notation for dyn async trait		compiler
		lang	Niko Matsakis
		types	n/a
asm_const_ptr	Alice Ryhl	lang-docs
		lang
		libs-api	n/a
		libs	n/a
Assumptions on Binders	Boxy	types	Boxy
Async Future Memory Optimisation	Ding Xiang Fei	compiler	Tyler Mandry
Async statemachine optimisation	@diondokter	compiler
BorrowSanitizer	Ian McCormack	compiler	Ralf Jung
		opsem	Ralf Jung
		infra	n/a
		lang	n/a
Cargo cross workspace cache	Ross Sullivan	cargo	Ed Page
cfg(no_fp_fmt_parse)	@todo	lang-docs
		lang
		libs-api	n/a
		libs	n/a
Crate Slicing for Faster Fresh Builds	@yijunyu	compiler
		cargo	n/a
		types	n/a
Dictionary Passing Style Experiment	@Nadrieril	types	lcnr
Ergonomic ref-counting: Share trait and move expressions		lang	Niko Matsakis
		compiler	n/a
		lang-docs	n/a
		libs-api	n/a
Case study for experimental language specification, with integration into project teams and processes	Jack Huey	lang	Josh Triplett
		types	Jack Huey
		spec	n/a
Project goal - High-Level ML optimizations	Manuel Drehwald	compiler	Oliver Scherer
		lang	TC
		infra	n/a
Improve rustc_codegen_cranelift performance	bjorn3	compiler
		cargo	n/a
In-place initialization	Alice Ryhl	lang
Incremental Systems Rethought	Alejandra González	compiler	Jack Huey
C++/Rust Interop Problem Space Mapping	Joel Marcey	opsem
		compiler	n/a
		lang	n/a
		libs-api	n/a
Declarative (macro_rules!) macro improvements	Josh Triplett	lang	Josh Triplett
Control over Drop semantics		compiler
		lang
		opsem	n/a
		types	n/a
Implement and Maintain MC/DC Coverage Support	@RenjiSann	compiler
		project-stable-mir
		infra	n/a
Open Enums	@kupiakos	compiler
		lang
		libs	n/a
		opsem	n/a
		types	n/a
Nightly support for function overloading in FFI bindings	@ssbr	lang
		compiler	n/a
		libs-api	n/a
		types	n/a
Continue Experimentation with Pin Ergonomics	Frank King	compiler	Oliver Scherer
		lang	TC
		types	Oliver Scherer
Stabilize public/private dependencies		compiler
		cargo	n/a
Reborrow traits	Aapo Alasuutari	lang	Tyler Mandry
		compiler	n/a
		types	n/a
Prepare TAIT + RTN for stabilization		lang	TC
		types	lcnr
Stabilize Rust for Linux compiler features	Tomas Sedovic	compiler	Wesley Wiser
Sized Hierarchy and Scalable Vectors	David Wood	compiler	David Wood
		lang	Niko Matsakis
		libs-api	Amanieu d’Antras
		types	lcnr
Stabilize MemorySanitizer and ThreadSanitizer Support	Jakob Koschel	bootstrap
		compiler
		project-exploit-mitigations
		infra	n/a
Stabilize Cargo SBOM precursor		cargo
Stabilize the Try trait	Tyler Mandry	lang
		libs
		compiler	n/a
		types	n/a
Implement Supertrait auto impl	Ding Xiang Fei	lang	Taylor Cramer
		types
used_with_arg	@todo	lang-docs
		lang
		libs-api	n/a
		libs	n/a
Wasm Components	Yoshua Wuyts	compiler
		lang	n/a
		libs	n/a

Small goals

Small goals are covered by standard team processes and do not require dedicated support from anyone.

Goal	PoC	Team	Champion
Expanding a-mir-formality to work better as a Rust type system spec	Jack Huey	lang-docs	n/a
		spec	n/a
		types	n/a
Stabilize Cargo’s linting system	Ed Page	cargo	n/a
		clippy	n/a
		compiler	n/a
Prototype a new set of Cargo “plumbing” commands		cargo	n/a
Stabilize cargo-script	Ed Page	cargo	n/a
		compiler	n/a
		lang	n/a
		rustdoc	n/a
Continue resolving cargo-semver-checks blockers for merging into cargo	Predrag Gruevski	cargo	n/a
		rustdoc	n/a
Improving Unsafe Code Documentation in the Rust Standard Library	@hxuhack	libs	n/a
		opsem	n/a
Interactive cargo-tree: TUI for Cargo’s dependency graph visualization	@orhun	cargo	n/a
libc 1.0 release readiness	Yuki Okushi	crate-maintainers	n/a
Finish the libtest json output experiment	Ed Page	cargo	n/a
		libs-api	n/a
		testing-devex	n/a
Implement Open Rust Namespace Support		cargo	n/a
		compiler	n/a
Establish a Spot for Safety-Critical Lints in Clippy	Pete LeVasseur	clippy	n/a
Stabilizing f16	Folkert de Vries	compiler	n/a
		lang	n/a
		libs-api	n/a
Type System Documentation	Boxy	types	n/a
Stabilize Unsafe Fields	Jack Wrenn	book	n/a
		clippy	n/a
		lang	n/a
		libs	n/a
		rustdoc	n/a
		rustfmt	n/a
		spec	n/a
		style	n/a
Establish a User Research Team	Niko Matsakis	leadership-council	n/a

Goals by champion

Goals by team

The following table highlights the support level requested from each affected team. Each goal specifies the level of involvement needed:

• Small: The team only needs to do routine activities (e.g., reviewing a few small PRs).
• Medium: Dedicated support from one team member, but the rest of the team doesn’t need to be heavily involved.
• Large: Deeper review and involvement from the entire team (e.g., design meetings, complex RFCs).

“Small” asks require someone on the team to “second” the goal. “Medium” and “Large” asks require a dedicated champion from the team.

book team

*1: Will need approval for book changes. (from here)

bootstrap team

cargo team

*1: Reviews of rust-lang/rfcs#3874 and rust-lang/rfcs#3875 and many implementation patches (from here)

*2: Design and code reviews (from here)

*3: Feedback on integration with the cargo polyfill toolchain (from here)

*4: Alignment on direction, possible integration help and review. (from here)

*5: Discussion and moral support (from here)

*6: PR reviews for Cargo changes; design discussions (from here)

*7: Code reviews and maybe a design discussion or two (from here)

*8: In case we end up pursuing JITing as a way to improve performance that will eventually need native integration with cargo run. For now we’re just prototyping, and so the occasional vibe check should be sufficient (from here)

clippy team

*1: Will need approval for clippy support. (from here)

*2: Review our initial batch of lints to ensure they provide an example of adapting the existing lint guidelines to Cargo (from here)

*3: Initial onboarding support for SCRC contributors; guidance on lint design (from here)

compiler team

*1: Significant refactoring of the resolver, reviews from Vadim Petrochenkov (from here)

*2: An implementer, design discussions, PR review (from here)

*3: Collaborate on stub rlib design and deferred compilation pass; consult on soundness and rustc internals (from here)

*4: Most will be review work, but pushing optimisations to the max will possibly touch on some controversial points that need discussion (from here)

*5: Champion: Ralf Jung. Design discussions, PR review, and upstream integration. (from here)

*6: Reviews of big changes needed; also looking for implementation help (from here)

*7: Depending on what ways we end up pursuing, we might need no rustc side changes at all or medium sized changes. (from here)

*8: Standard reviews for stabilization and SVE work (from here)

*9: Targets are small but async fn is not (from here)

*10: My changes should be contained to few places in the compiler. Potentially one frontend macro/intrinsic, and otherwise almost exclusively in the backend. (from here)

*11: Review of implementation PRs; guidance on architecture to avoid previous maintenance issues; input on Stable MIR extension feasibility (from here)

*12: Design discussions and implementation review. (from here)

*13: Review our initial batch of lints to ensure they provide an example of adapting the existing lint guidelines to Cargo (from here)

*14: Design discussions, PR review (from here)

*15: Reviewing any further compiler changes (from here)

*16: Reviews of rust-lang/rfcs#3874 and rust-lang/rfcs#3875 and any implementation patches (from here)

*17: Standard reviews for trait implementation PRs (from here)

*18: Most complexity is in the type system (from here)

crate-maintainers team

crates-io team

*1: Reviews of rust-lang/rfcs#3874 and rust-lang/rfcs#3875 and any implementation patches (from here)

edition team

*1: Review the feasibility of this proposal as well as the specific API changes. (from here)

fls team

*1: Core work of authoring and releasing FLS versions on schedule (from here)

infra team

*1: I will work with Jakub Beránek to add more bootstrap options to build and configure MLIR (an LLVM subproject) (from here)

*2: CI support for MC/DC testing (from here)

lang team

*1: Would need a design meeting and RFC review. (from here)

*2: Design session needed to work through design (from here)

*3: Stabilization decisions, directional alignment (from here)

*4: Design meeting, experiment (from here)

*5: Aiming for two design meetings; large language feature (from here)

*6: Semantics, syntax, and stabilization decisions (from here)

*7: Review and accept a design space RFC (from here)

*8: RFC review, design discussions (from here)

*9: Champion and (ideally) a lang meeting (from here)

*10: Stabilization decision for user facing changes (from here)

*11: Reviews, Lang/RfL meetings (from here)

*12: Reviews, Lang/RfL meetings (from here)

*13: Reviews, Lang/RfL meetings (from here)

*14: Vibe check and RFC review (from here)

*15: Continued experiment support, design feedback (from here)

*16: RFC decision for [rfcs#3838], stabilization sign-off (from here)

*17: Reviews, Lang/RfL meetings (from here)

*18: Design meeting Experiment (from here)

*19: Resolve design concerns like #[override] and review stabilization (from here)

*20: Discussions to understand which parts of gpu programming and std::offload are problematic wrt. stabilization, from a lang perspective. Non-blocking, since we are not rushing stabilization. (from here)

*21: This is a stabilization, but we have previously explored the design in detail, and it’s simple and straightforward. It should be able to take place asynchronously. Nonetheless, I can upgrade this to “Large” if people believe it rises to that level. (from here)

*22: Team aligned already on the shape of the feature (from here)

*23: Champion: Tyler Mandry. General support and guidance. (from here)

*24: Will need approval for stabilization. (from here)

*25: Stabilization discussions (from here)

*26: Experimentation with native Wasm features will need approval. May become “medium” if we are somehow really successful. (from here)

*27: Feedback on language semantics questions as needed (from here)

*28: Review of the feature and lang implications. (from here)

*29: occasionally being fast-tracked would be nice (from here)

lang-docs team

*1: Reviews, Lang/RfL meetings (from here)

*2: Reviews, Lang/RfL meetings (from here)

*3: Reviews, Lang/RfL meetings (from here)

*4: Reviews, Lang/RfL meetings (from here)

*5: Standard PR reviews for Rust Reference (from here)

*6: General discussion of shape of integration of a-mir-formality into reference (from here)

leadership-council team

*1: Org decision to establish team, ongoing coordination (from here)

libs team

*1: Since super let affects the standard library, the library team should be on-board with any new directions it takes. Additionally, library team review may be required for changes to pin!’s implementation. (from here)

*2: Will need approval for documentation changes. (from here)

*3: Small reviews of library PRs (implementing FP for core & std types) (from here)

*4: Reviews of rust-lang/rfcs#3874 and rust-lang/rfcs#3875 and any implementation patches (from here)

*5: Threading support will need review (from here)

libs-api team

*1: Determine what API changes should be made across editions. (from here)

*2: Review RFC; review and approve stdarch SVE APIs (from here)

*3: Reviews of RFC and API surface area (from here)

*4: Would like to know if they have use cases for overloading in standard Rust, or if there are certain approaches they would like better. May be involved if experiment involves library surface area (e.g. Fn traits) (from here)

*5: PR reviews for core/std public documentation; feedback on approach. (from here)

opsem team

*1: Review unsafe patterns, establish safety contracts, guide documentation (from here)

*2: Problem statement review (from here)

*3: Doc changes if necessary (from here)

*4: Review pull requests; answer questions on Zulip when there are different opinions about specific rules (from here)

*5: Small reviews of RFC and/or compiler PRs (from here)

project-exploit-mitigations team

project-stable-mir team

*1: Consultation on extending Stable MIR with syntactic structure; review of any proposed API additions (if this approach is chosen) (from here)

rustdoc team

*1: Figure out how such API changes should be presented in the API docs. (from here)

*2: Will need approval for rustdoc support. (from here)

*3: Discussion and moral support (from here)

*4: Design decision and PR review (from here)

rustfmt team

*1: Will need approval for rustfmt support. (from here)

spec team

*1: Alignment on release cadence goal (from here)

*2: Will need approval for reference changes. (from here)

*3: General discussion on how this may align with other efforts to specify Rust. (from here)

*4: General discussion of integration of a-mir-formality with reference (from here)

style team

*1: Will need approval for style guide changes. (from here)

testing-devex team

*1: Design discussions and review (from here)

types team

*1: Involved in implementation + review (from here)

*2: a-mir-formality modeling, design alignment (from here)

*3: Stabilization decision, ongoing review work (from here)

*4: Review of type-system stabilization/implementation (from here)

*5: Implementation design and sign-off (from here)

*6: Review future extensions for plausibility, soundness, and stabilization (from here)

*7: Design review, stabilization decision, reviews from Jack Huey and Matthew Jasper (from here)

*8: implementation/reviews/deciding on a design (from here)

*9: Stabilization report review, TAIT interactions (from here)

*10: Collaborating on a-mir-formality on the borrow checker integration; small reviews of RFC and/or compiler PRs (from here)

*11: Type System implementation and stabilization sign-off (from here)

*12: Evaluate potential changes to (experimental) reference in routine team decisions (from here)

*13: Support for the restricted solver mode in the new solver (from here)

*14: Want to ensure that the feature “fits within the lines” of a simple desugaring, still some possible type-system impl work (from here)

*15: Discussion and moral support (from here)

*16: Consultation on trait coherence requirements for deferred type-checking (from here)

*17: General discussion on any additional type-system changes (from here)

*18: Review work on the type system is expected to be trivial and feature-gated (from here)

*19: No dedicated reviewer needed/given, but tracking issue should note the needed for dedicated types review prior to stabilization (from here)

*20: Members may have comments/thoughts on direction and priorities; Review work for a-mir-formality (from here)

*21: Review of any changes to HIR ty lowering or method resolution (from here)

*22: May have changes to dyn-compatibility rules (from here)

wg-mir-opt team

wg-parallel-rustc team

*1: Discussion and Implementation (from here)