Crate features / memchr
Feature flags · memchr 2.8.3 · from crates.io 2026-10-24
memchr features: what each one does, and the line to copy
Short answermemchr 2.8.3 has 6 features. By default it turns on std; add default-features = false to start from nothing. It needs Rust 1.61 or newer.
Pick features
Every feature
| Feature | In default | Turns on |
|---|---|---|
alloc | nothing else (a switch the code checks) | |
libc | nothing else (a switch the code checks) | |
logging | dep:log | |
rustc-dep-of-std | core | |
std | yes | alloc |
use_std | std |
dep:x turns on the optional dependency x; x/y turns on feature y of dependency x (with ?, only if x is already on).
MSRV history
The minimum Rust version memchr declares (rust-version), and the release that changed it:
- 2.6.1 (2023-08-29): Rust 1.60
- 2.6.3 (2023-09-02): Rust 1.61
Stuck on an older compiler? Pin the last version that supports it, for example cargo update -p memchr --precise <version>, or use resolver 3, which picks compatible versions for you.
More on memchr
Real downloads, dependents and alternatives: memchr crate data (4.8M real downloads a day, 2,274 dependents).
docs.rs feature list · crates.io · license Unlicense OR MIT · edition 2021
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