rust-lang/reference

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The Rust Reference

Stars: 1.6k
Forks: 607
Open beginner issues: 19
Indexed issues: 314
Avg merge: 1d 1h
Merged PRs (30d): 12

Dominant language: Rust
License: Apache-2.0
Last GitHub push: Sep 15, 2026
Latest indexed: Sep 21, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted

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314 open issues indexed

google system maneger update Open

Difficulty 5/5 Over a week Newbie friendliness 10/100

rust-lang/reference#2358 · Opened Sep 20, 2026
The reference does not allow in-bounds reads of "partially dangling" pointers, whereas Miri does. Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

rust-lang/reference#2356 · Opened Sep 15, 2026
Consider a normative references chapter Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/reference#2316 · Opened Jul 21, 2026
Document how tokens are compared in declarative macros Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

rust-lang/reference#2315 · 2 comments · Opened Jul 21, 2026
Can we avoid the need for the hard cut operator? Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/reference#2301 · 3 comments · 1 reaction · Opened Jun 29, 2026
Reference recommends union pattern matching pattern that is not actually guaranteed to work Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

rust-lang/reference#2298 · Opened Jun 25, 2026
Document the rules for const UB Open

A-const-eval A-undefined-behavior

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

rust-lang/reference#2294 · Opened Jun 23, 2026
Assignee expressions can be enums Open

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

rust-lang/reference#2280 · Opened Jun 7, 2026
Document association of generic arguments in path segments Open

A-generics

Difficulty 3/5 1-2 days Newbie friendliness 55/100

rust-lang/reference#2275 · 1 comment · Opened May 24, 2026
"Macros by example" page mixes language and macro_rules input syntax definitions Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

rust-lang/reference#2267 · 1 reaction · Opened May 9, 2026
Confusing use of the term "undefined behavior" in the note of `type.str.value` Open

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

rust-lang/reference#2266 · 1 comment · Opened May 7, 2026
The definition of fragment specifier is inconsistent Open

A-macros

Difficulty 4/5 3-5 days Newbie friendliness 45/100

rust-lang/reference#2265 · 12 comments · Opened May 6, 2026
document difference between T:: and <T>:: in paths Open

Difficulty 3/5 1-2 days Newbie friendliness 58/100

rust-lang/reference#2256 · 3 comments · Opened May 4, 2026
Assignee expressions can contain rest-patterns. Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/reference#2208 · 6 comments · Opened Mar 18, 2026
Document macro_use shadow restriction Open

A-macros

Difficulty 3/5 1-2 days Newbie friendliness 42/100

rust-lang/reference#2207 · 1 comment · Opened Mar 16, 2026
Consider documenting the split extern prelude Open

A-resolve

Difficulty 2/5 1-3 hours Newbie friendliness 62/100

rust-lang/reference#2188 · Opened Feb 22, 2026
Is it guaranteed that `align_of::<uX>() == align_of::<iX>()`? Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

rust-lang/reference#2155 · Opened Feb 3, 2026
What are the divergence rules around const eval? Open

A-const-eval A-divergence

Difficulty 4/5 3-5 days Newbie friendliness 32/100

rust-lang/reference#2153 · 1 comment · Opened Feb 1, 2026
Detail divergence for the rest of the expressions Open

A-divergence

rust-lang/reference#2152 · 1 assignee · Opened Feb 1, 2026
What is considered a "read"? Open

A-divergence

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/reference#2151 · Opened Feb 1, 2026
Update coercion and as-casting rules Open

A-coercions A-type-casting

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/reference#2150 · Opened Feb 1, 2026
Split up inline assembly page Open

A-asm

Difficulty 3/5 1-2 days Newbie friendliness 45/100

rust-lang/reference#2143 · 7 comments · Opened Jan 26, 2026
Oddity with closures that "mention" uninitialized places Open

A-closures

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/reference#2140 · Opened Jan 24, 2026
Imprecise language about function "access" Open

A-visibility

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

rust-lang/reference#2135 · 1 comment · Opened Jan 15, 2026
UB inconsistency when derefing a place in a closure Open

I-lang-nominated I-lang-radar P-lang-drag-3

Difficulty 5/5 Over a week Newbie friendliness 30/100

rust-lang/reference#2121 · 11 comments · Opened Dec 19, 2025
expr.array.index.const example code is outdated Open

A-expressions Language Cleanup

Difficulty 2/5 1-3 hours Newbie friendliness 50/100

rust-lang/reference#2119 · 2 comments · Opened Dec 18, 2025
Least-Upper-Bound coercions don't document special behaviour of coercing to fnptrs Open

A-coercions

Difficulty 2/5 1-3 hours Newbie friendliness 65/100

rust-lang/reference#2094 · 1 comment · Opened Nov 21, 2025
Define *target* Open

A-glossary

Difficulty 2/5 1-3 hours Newbie friendliness 62/100

rust-lang/reference#2089 · Opened Nov 15, 2025
Compound assignment desugaring doesn't take into account autoderef Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

rust-lang/reference#2085 · 1 comment · Opened Nov 11, 2025
Lack of precedence in OR clause causes lexical ambiguity for comments Open

A-lexer

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/reference#2079 · 4 comments · Opened Nov 9, 2025
Elaborate on relative precedence between method calls and field accesses Open

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

rust-lang/reference#2078 · 1 comment · Opened Nov 8, 2025
Document `#![feature(..)]` attribute? Open

A-attributes C-bug

Difficulty 2/5 1-3 hours Newbie friendliness 52/100

rust-lang/reference#2076 · Opened Nov 6, 2025
Documenting satisfying trait bounds and candidate preference Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/reference#2070 · 1 comment · Opened Oct 31, 2025
asm.rules.stack-below-sp is ambiguous Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

rust-lang/reference#2053 · Opened Oct 15, 2025
Add style entry for referring to editions Open

Authoring guide Meta

Difficulty 3/5 1-2 days Newbie friendliness 45/100

rust-lang/reference#2046 · Opened Oct 9, 2025
English style guide Open

Authoring guide Meta

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/reference#2045 · Opened Oct 9, 2025
More clearly document normative vs non-normative content Open

A-conventions Authoring guide

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/reference#2044 · 1 reaction · Opened Oct 8, 2025
Guidelines for referring to tools and compilers Open

Authoring guide Meta

Difficulty 5/5 Over a week Newbie friendliness 30/100

rust-lang/reference#2043 · Opened Oct 8, 2025
Guidelines for documenting the *why* of something Open

Authoring guide Meta

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/reference#2042 · Opened Oct 8, 2025
Guidelines for implementation-specific rules Open

Authoring guide Meta

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/reference#2040 · Opened Oct 7, 2025
Guidelines for linking to other documentation Open

Authoring guide Meta

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/reference#2039 · Opened Oct 7, 2025
Guidelines for deprecated language features and intended future changes Open

Authoring guide Meta

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/reference#2038 · Opened Oct 7, 2025
Guidelines for documenting intended vs actual behavior Open

Authoring guide Meta

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/reference#2037 · Opened Oct 7, 2025
Guidelines for referring to rustc lints Open

Authoring guide Meta

Difficulty 4/5 3-5 days Newbie friendliness 38/100

rust-lang/reference#2027 · Opened Sep 30, 2025
Guidelines for parts that are intentionally unspecified Open

Authoring guide Meta

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/reference#2026 · Opened Sep 30, 2025
Guidelines for parts that are incomplete or undecided Open

Authoring guide Meta

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/reference#2025 · Opened Sep 30, 2025
Policy: Past behavior Open

Authoring guide Meta

Difficulty 5/5 Over a week Newbie friendliness 30/100

rust-lang/reference#2024 · 3 comments · Opened Sep 30, 2025
Expand guidelines for examples Open

Authoring guide Meta

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/reference#2023 · Opened Sep 30, 2025
[undefined.validity.undef] paragraph contradicts miri and UCG? Open

A-undefined-behavior

Difficulty 4/5 3-5 days Newbie friendliness 38/100

rust-lang/reference#2009 · 1 comment · Opened Sep 24, 2025
[undefined.validity.union] dyn Trait raw pointer is subject to debate.. where's the debate? Open

A-undefined-behavior

Difficulty 2/5 1-3 hours Newbie friendliness 74/100

rust-lang/reference#2008 · 4 comments · Opened Sep 24, 2025

rust-lang/reference

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