fix otlp external example lint

open-telemetry · Feb 27, 2022 · f9c3728 · f9c3728
1 parent 8f53c57
commit f9c3728
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/examples/external-otlp-tonic-tokio/src/main.rs b/examples/external-otlp-tonic-tokio/src/main.rs
@@ -47,7 +47,7 @@ fn init_tracer() -> Result<sdktrace::Tracer, TraceError> {
         .map(|(name, value)| {
             let header_name = name
                 .strip_prefix(HEADER_PREFIX)
-                .map(|h| h.replace("_", "-"))
+                .map(|h| h.replace('_', "-"))
                 .map(|h| h.to_ascii_lowercase())
                 .unwrap();
             (header_name, value)