chore: fix various issues

Author: KowalskiThomas

examples/ffi/array_queue.cpp

@@ -96,6 +96,8 @@ int main(void) {
   }
 
   for (const auto &c : counts) {
-    assert(c.load(std::memory_order_seq_cst) == num_threads);
+    auto value = c.load(std::memory_order_seq_cst);
+    assert(value == num_threads);
+    std::ignore = value;
   }
 }

libdd-data-pipeline-ffi/src/trace_exporter.rs

@@ -13,7 +13,7 @@ use libdd_data_pipeline::trace_exporter::{
     TelemetryConfig, TraceExporter, TraceExporterInputFormat, TraceExporterOutputFormat,
 };
 use std::{ptr::NonNull, time::Duration};
-use tracing::{debug, error};
+use tracing::debug;
 
 #[inline]
 fn sanitize_string(str: CharSlice) -> Result<String, Box<ExporterError>> {