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A simple logger built on top ofenv_logger.It is configured via an environment variable and writes to standarderror with nice colored output for log levels.

Add the dependency to yourCargo.toml:

[dependencies]log ="0.4"pretty_env_logger ="0.4"

Add some usage to your application:

externcrate pretty_env_logger;#[macro_use]externcrate log;fnmain(){    pretty_env_logger::init();info!("such information");warn!("o_O");error!("much error");}

Then run your app with the environmental variable set:

RUST_LOG=trace cargo run

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE orhttp://apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT orhttp://opensource.org/licenses/MIT)