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//! Asynchronous synchronization primitives.
//!
//! > **Note:** This crate is **deprecated in tokio 0.2.x** and has been moved into
//! > [`tokio::sync`] behind the `sync` [feature flag].
//!
//! [`tokio::sync`]: https://docs.rs/tokio/latest/tokio/sync/index.html
//! [feature flag]: https://docs.rs/tokio/latest/tokio/index.html#feature-flags
//!
//! This crate provides primitives for synchronizing asynchronous tasks.
extern crate fnv;
extern crate futures;