Individual skill

rust-no-std

Use when writing #![no_std] Rust crates, using core and alloc without std, selecting panic handlers, or testing no_std code on the host.

.devin/skills/rust-no-std/SKILL.md

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Last checked: Nov 4, 2026

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Repository stars (not skill ratings): 55
Repository last updated: Sep 28, 2026
License: Apache-2.0

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# Rust no_std

## Contract

| Field | Bound contract |
|---|---|
| Trigger | The user writes or debugs `#![no_std]` Rust, splits code between `core`, `alloc`, and `std`, implements a global allocator, selects a panic handler, or tests a `no_std` crate on the host. |
| Authority | Reversible local: writes only local `no_std` crate source, `Cargo.toml` feature gates, and report files; rollback is `git checkout --` or `rm` for new files. No remote mutation. |
| Side effect | Local `lib.rs`, `Cargo.toml`, and test files may change; chat emits guidance. |
| Done | The crate builds for the target, the allocator or panic handler is wired, or the host test runs pass. |

## Inputs

1. The target platform (required): a bare-metal triple, an embedded MCU, or `x86_64-unknown-linux-gnu` for host tests.