M01 Ownership
The m01-ownership skill diagnoses and resolves Rust ownership, borrowing, and lifetime errors by guiding developers to understand data ownership requirements rather than applying quick fixes. It serves Rust developers encountering errors like E0382, E0597, and E0506 by providing a systematic thinking process that traces problems to their design roots and determines appropriate patterns like move semantics, references, or shared ownership types. The skill prevents repeated ownership errors by distinguishing between symptom fixes and underlying design issues, escalating to higher-level design skills when patterns persist.
- skills.sh installs
- 809
- GitHub stars
- 1.3K
- last updated
- Jul 14, 2026
Install
$ npx -y skills add zhanghandong/rust-skills --skill m01-ownership --agent claude-codeInstalls into .claude/skills of the current project.
Files
Ownership & Lifetimes
Layer 1: Language Mechanics
Core Question
Who should own this data, and for how long?
Before fixing ownership errors, understand the data's role:
- Is it shared or exclusive?
- Is it short-lived or long-lived?
- Is it transformed or just read?
Error → Design Question
| Error | Don't Just Say | Ask Instead |
|---|---|---|
| E0382 | "Clone it" | Who should own this data? |
| E0597 | "Extend lifetime" | Is the scope boundary correct? |
| E0506 | "End borrow first" | Should mutation happen elsewhere? |
| E0507 | "Clone before move" | Why are we moving from a reference? |
| E0515 | "Return owned" | Should caller own the data? |
| E0716 | "Bind to variable" | Why is this temporary? |
| E0106 | "Add 'a" | What is the actual lifetime relationship? |
Thinking Prompt
Before fixing an ownership error, ask:
- What is this data's domain role?
- Entity (unique identity) → owned
- Value Object (interchangeable) → clone/copy OK
- Temporary (computation result) → maybe restructure
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- Repository
- github.com/zhanghandong/rust-skills
- Category
- Rust
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