docs: Add tracing-loki to "Related Crates" section (#2012)

README.md

@@ -403,6 +403,7 @@ are not maintained by the `tokio` project. These include:
 - [`sentry-tracing`] provides a layer for reporting events and traces to [Sentry].
 - [`tracing-forest`] provides a subscriber that preserves contextual coherence by 
   grouping together logs from the same spans during writing.
+- [`tracing-loki`] provides a layer for shipping logs to [Grafana Loki].
 
 (if you're the maintainer of a `tracing` ecosystem crate not in this list,
 please let us know!)
@@ -438,6 +439,8 @@ please let us know!)
 [`sentry-tracing`]: https://crates.io/crates/sentry-tracing
 [Sentry]: https://sentry.io/welcome/
 [`tracing-forest`]: https://crates.io/crates/tracing-forest
+[`tracing-loki`]: https://crates.io/crates/tracing-loki
+[Grafana Loki]: https://grafana.com/oss/loki/
 
 **Note:** that some of the ecosystem crates are currently unreleased and
 undergoing active development. They may be less stable than `tracing` and

tracing/README.md

@@ -376,6 +376,7 @@ maintained by the `tokio` project. These include:
 - [`tracing-fluent-assertions`] provides a fluent assertions-style testing
   framework for validating the behavior of `tracing` spans.
 - [`sentry-tracing`] provides a layer for reporting events and traces to [Sentry].
+- [`tracing-loki`] provides a layer for shipping logs to [Grafana Loki].
 
 If you're the maintainer of a `tracing` ecosystem crate not listed above,
 please let us know! We'd love to add your project to the list!
@@ -403,6 +404,8 @@ please let us know! We'd love to add your project to the list!
 [`tracing-fluent-assertions`]: https://crates.io/crates/tracing-fluent-assertions
 [`sentry-tracing`]: https://crates.io/crates/sentry-tracing
 [Sentry]: https://sentry.io/welcome/
+[`tracing-loki`]: https://crates.io/crates/tracing-loki
+[Grafana Loki]: https://grafana.com/oss/loki/
 
 **Note:** that some of the ecosystem crates are currently unreleased and
 undergoing active development. They may be less stable than `tracing` and

tracing/src/lib.rs

@@ -805,6 +805,7 @@
 //!  - [`sentry-tracing`] provides a layer for reporting events and traces to [Sentry].
 //!  - [`tracing-forest`] provides a subscriber that preserves contextual coherence by
 //!    grouping together logs from the same spans during writing.
+//!  - [`tracing-loki`] provides a layer for shipping logs to [Grafana Loki].
 //!
 //! If you're the maintainer of a `tracing` ecosystem crate not listed above,
 //! please let us know! We'd love to add your project to the list!
@@ -839,6 +840,8 @@
 //! [`sentry-tracing`]: https://crates.io/crates/sentry-tracing
 //! [Sentry]: https://sentry.io/welcome/
 //! [`tracing-forest`]: https://crates.io/crates/tracing-forest
+//! [`tracing-loki`]: https://crates.io/crates/tracing-loki
+//! [Grafana Loki]: https://grafana.com/oss/loki/
 //!
 //! <div class="example-wrap" style="display:inline-block">
 //! <pre class="ignore" style="white-space:normal;font:inherit;">