tracing-subscriber 0.2.18

Utilities for implementing and composing `tracing` subscribers.
Documentation 
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//! [`Layer`]s that control which spans and events are enabled by the wrapped
//! subscriber.
//!
//! [`Layer`]: ../layer/trait.Layer.html
#[cfg(feature = "env-filter")]
mod env;
mod level;

pub use self::level::{LevelFilter, ParseError as LevelParseError};

#[cfg(feature = "env-filter")]
#[cfg_attr(docsrs, doc(cfg(feature = "env-filter")))]
pub use self::env::*;