Empowering everyone to build reliable and efficient software.
⑂ 15k◎ 13k
Crate
tracing-subscriber
Composable subscribers for the tracing instrumentation framework.
What it is
tracing-subscriber provides pre-built implementations for consuming tracing events: a formatting layer for human-readable or JSON output, filter layers controlled via RUST_LOG, and a Registry for composing multiple layers into a single subscriber.
Why it is commonly used
The standard companion to the tracing crate. Used at application startup to configure how tracing events are formatted, filtered, and exported. Most Rust services call tracing_subscriber::init() once in main() and rely on it for all log output.
1.9k
Repositories
92%
Actively maintained
1.8k
Updated ≤ 30 days
4.8M
Total stars
1.7k
Owners
Counted from the Cargo.toml manifests of the 1.9k indexed repositories that declare tracing-subscriber as a dependency — not download counts. Dependency data last verified 2026-08-13.
Often used with
Crates that show up unusually often in tracing-subscriber projects. The most distinctive pairings rank first — crates these projects use far more than the average indexed Rust project does, not just crates that are popular everywhere. Each percentage is the share of tracing-subscriber projects that also use it.
tracing-appender20.3%tracing-opentelemetry14.5%opentelemetry-otlp16.8%opentelemetry_sdk17.3%opentelemetry18.6%tower-http34.9%tower31.3%tracing98.8%jsonwebtoken14.8%sqlx16.7%aws-config10.1%prometheus10.8%argon210%tonic15.6%axum45.3%async-stream15.4%rmcp10.7%tikv-jemallocator10.4%tokio-stream30.9%dashmap24.8%dotenvy11.1%proptest11.4%tokio-tungstenite17.2%tokio-util39.6%
Used by these organizations
CloudflareMozillaAWSMicrosoftGoogleOxide ComputerParity TechnologiesDenoZed IndustriesFly.ioTursoSurrealDBEmbark StudiosBuoyantVercelThe Rust ProjectFuel LabsAstralOpenAIUnionWarpMeilisearchRerunFUTOTokioBevy EngineBytecode AllianceLinebenderNushellQdrantPolarsQuickwitDatadogHyperiumActixprobe-rsPyO3YewIcedRatatuiWasmerTracel AIlibp2pDieselrustlsServoParadigmMatrix.org
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