Logging

estk/log4rs — highly configurable logging framework modeled after Java’s Logback and log4j libraries CircleCI
jesusprubio/leg — Elegant print for lazy devs. Make your CLIs nicer with minimal effort. Build Status
rbatis/fast_log — Rust async log High-performance asynchronous logging
log — Logging implementation for Rust
seanmonstar/pretty-env-logger — A pretty, easy-to-use logger for Rust.
slog-rs/slog — Structured, composable logging for Rust
tokio-rs/tracing — An application level tracing framework for async-aware structured logging, error handling, metrics, and more Build Status

Reference List