Crate features / mio
Feature flags · mio 1.2.4 · from crates.io 2026-10-24
mio features: what each one does, and the line to copy
Short answermio 1.2.4 has 3 features. By default it turns on log; add default-features = false to start from nothing. It needs Rust 1.71 or newer.
Pick features
Every feature
| Feature | In default | Turns on |
|---|---|---|
net | nothing else (a switch the code checks) | |
os-ext | os-poll, windows-sys/Win32_System_Pipes, windows-sys/Win32_Security | |
os-poll | 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 mio declares (rust-version), and the release that changed it:
- 1.0.0 (2024-06-14): Rust 1.70
- 1.1.0 (2025-10-17): Rust 1.71
Stuck on an older compiler? Pin the last version that supports it, for example cargo update -p mio --precise <version>, or use resolver 3, which picks compatible versions for you.
More on mio
Real downloads, dependents and alternatives: mio crate data (3.3M real downloads a day, 624 dependents).
Security record: mio advisories.
docs.rs feature list · crates.io · license MIT · edition 2021
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