Crate features / fastrand
Feature flags · fastrand 2.5.0 · from crates.io 2026-10-24
fastrand features: what each one does, and the line to copy
Short answerfastrand 2.5.0 has 3 features. By default it turns on std; add default-features = false to start from nothing. It needs Rust 1.63 or newer.
Pick features
Every feature
| Feature | In default | Turns on |
|---|---|---|
alloc | nothing else (a switch the code checks) | |
js | std, getrandom | |
std | yes | alloc |
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 fastrand declares (rust-version), and the release that changed it:
- 1.7.0 (2022-01-22): Rust 1.34
- 2.0.0 (2023-06-09): Rust 1.36
- 2.4.1 (2026-04-07): Rust 1.63
Stuck on an older compiler? Pin the last version that supports it, for example cargo update -p fastrand --precise <version>, or use resolver 3, which picks compatible versions for you.
More on fastrand
Real downloads, dependents and alternatives: fastrand crate data (2.9M real downloads a day, 1,809 dependents).
docs.rs feature list · crates.io · license Apache-2.0 OR MIT · edition 2018
Up next
Before you depend on itfastrand crate dataReal downloads, dependents, alternatives.Read it next →Did this answer your question?