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Mention futures create right before before it is needed #807

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8 changes: 7 additions & 1 deletion content/tokio/tutorial/async.md
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Expand Up @@ -207,6 +207,12 @@ outer future, driving the asynchronous computation to completion.
To better understand how this all fits together, let's implement our own minimal
version of Tokio! The full code can be found [here][mini-tokio].

Add the following dependency to your `Cargo.toml` to pull in `futures`.

```toml
futures = "0.3"
```

```rust
use std::collections::VecDeque;
use std::future::Future;
Expand Down Expand Up @@ -499,7 +505,7 @@ implementors, but requires a bunch of unsafe boilerplate code. Instead of using
provided by the [`futures`] crate. This allows us to implement a simple trait to
expose our `Task` struct as a waker.

Add the following dependency to your `Cargo.toml` to pull in `futures`.
If you haven't already, add the following dependency to your `Cargo.toml` to pull in `futures`.

```toml
futures = "0.3"
Expand Down