Crate features / headers
Feature flags · headers 0.4.2 · from crates.io 2026-10-24
headers features: what each one does, and the line to copy
Short answerheaders 0.4.2 has 1 feature. Nothing is on by default: turn on what you use. It needs Rust 1.57 or newer.
Pick features
Every feature
| Feature | In default | Turns on |
|---|---|---|
nightly | nothing else (a switch the code checks) |
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 headers declares (rust-version), and the release that changed it:
- 0.3.9 (2023-08-31): Rust 1.56
- 0.4.2 (2026-09-24): Rust 1.57
Stuck on an older compiler? Pin the last version that supports it, for example cargo update -p headers --precise <version>, or use resolver 3, which picks compatible versions for you.
More on headers
Real downloads, dependents and alternatives: headers crate data (343.1K real downloads a day, 273 dependents).
docs.rs feature list · crates.io · license MIT · edition 2018
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