Crate features / futures-io
Feature flags · futures-io 0.3.34 · from crates.io 2026-10-24
futures-io features: what each one does, and the line to copy
Short answerfutures-io 0.3.34 has 2 features. By default it turns on std; add default-features = false to start from nothing. It needs Rust 1.36 or newer.
Pick features
Every feature
| Feature | In default | Turns on |
|---|---|---|
std | yes | nothing else (a switch the code checks) |
unstable | 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 futures-io declares (rust-version), and the release that changed it:
- 0.3.19 (2021-12-18): Rust 1.36
Stuck on an older compiler? Pin the last version that supports it, for example cargo update -p futures-io --precise <version>, or use resolver 3, which picks compatible versions for you.
More on futures-io
Real downloads, dependents and alternatives: futures-io crate data (2.8M real downloads a day, 344 dependents).
docs.rs feature list · crates.io · license MIT OR Apache-2.0 · edition 2018
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