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tokio-stream
Utilities to work with `Stream` and `tokio`.
crate v0.1.19 tokio.rs 2026-07-22
tokio-util
Additional utilities for working with Tokio.
crate v0.7.19 tokio.rs 2026-07-21
tokio
An event-driven, non-blocking I/O platform for writing asynchronous I/O backed applications.
crate v1.53.1 tokio.rs 2026-07-20
tokio-macros
Tokio's proc macros.
crate v2.7.1 tokio.rs 2026-07-17
tokio-metrics
Runtime and task level metrics for Tokio applications.
crate v0.5.1 tokio.rs 2026-07-08
tracing-appender
Provides utilities for file appenders and making non-blocking writers.
crate v0.2.5 tokio.rs 2026-04-17
tracing-subscriber
Utilities for implementing and composing `tracing` subscribers.
crate v0.3.23 tokio.rs 2026-03-13
tokio-test
Testing utilities for Tokio- and futures-based code
crate v0.4.5 tokio.rs 2026-01-04
tracing
Application-level tracing for Rust.
crate v0.1.44 tokio.rs 2025-12-18
tracing-core
Core primitives for application-level tracing.
crate v0.1.36 tokio.rs 2025-12-18
tracing-journald
rich journald subscriber for `tracing`
crate v0.3.2 tokio.rs 2025-11-26
tracing-attributes
Procedural macro attributes for automatically instrumenting functions.
crate v0.1.31 tokio.rs 2025-11-26
tracing-error
Utilities for enriching errors with `tracing`.
crate v0.2.1 tokio.rs 2024-11-29
tracing-serde
A compatibility layer for serializing trace data with `serde`
crate v0.2.0 tokio.rs 2024-11-27
tracing-log
Provides compatibility between `tracing` and the `log` crate.
crate v0.2.0 tokio.rs 2023-10-25
tracing-flame
Tracing layer for creating flamegraphs from span timings
crate v0.2.0 tokio.rs 2021-12-17
tracing-futures
Utilities for instrumenting `futures` with `tracing`.
crate v0.2.5 tokio.rs 2021-02-16
"Fearless concurrency includes fearless refactoring."
— cuviper at rust-users.

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