doc: added tracing to the feature flags section (#3254)

This commit is contained in:
Aldas
2020-12-13 15:26:56 +01:00
committed by GitHub
parent be2cb7a5ce
commit f26f444f42
+1
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@@ -316,6 +316,7 @@
//! - `signal`: Enables all `tokio::signal` types.
//! - `fs`: Enables `tokio::fs` types.
//! - `test-util`: Enables testing based infrastructure for the Tokio runtime.
//! - `tracing`: Enables tracing events
//!
//! _Note: `AsyncRead` and `AsyncWrite` traits do not require any features and are
//! always available._