Rename logs_level_enabled flag to spec_unstable_logs_enabled (open-telemetry#2291)

Author: lalitb

CHANGELOG.md

@@ -3,6 +3,7 @@
 ## vNext
 
 - Bump MSRV to 1.70 [#2179](https://github.com/open-telemetry/opentelemetry-rust/pull/2179)
+- **Breaking** [2291](https://github.com/open-telemetry/opentelemetry-rust/pull/2291) Rename `logs_level_enabled flag` to `spec_unstable_logs_enabled`. Please enable this updated flag if the feature is needed. This flag will be removed once the feature is stabilized in the specifications.
 
 ## v0.26.0
 Released 2024-Sep-30

Cargo.toml

@@ -33,10 +33,10 @@ pprof = { version = "0.13", features = ["flamegraph", "criterion"] }
 
 [features]
 experimental_metadata_attributes = ["dep:tracing-log"]
-logs_level_enabled = ["opentelemetry/logs_level_enabled"]
+spec_unstable_logs_enabled = ["opentelemetry/spec_unstable_logs_enabled"]
 
 
 [[bench]]
 name = "logs"
 harness = false
-required-features = ["logs_level_enabled"]
+required-features = ["spec_unstable_logs_enabled"]

src/layer.rs

@@ -184,7 +184,7 @@ where
         self.logger.emit(log_record);
     }
 
-    #[cfg(feature = "logs_level_enabled")]
+    #[cfg(feature = "spec_unstable_logs_enabled")]
     fn event_enabled(
         &self,
         _event: &tracing_core::Event<'_>,