Warn if created logging events aren't added to the logger

Reviewed By: kassens

Differential Revision: D30690227

fbshipit-source-id: 37e222d02ae29aa69e7f094e540fc45bc929c78a

compiler/crates/relay-compiler/src/compiler_state.rs

@@ -248,6 +248,7 @@ impl CompilerState {
                         })
                         .collect::<Result<_>>()?;
                     log_event.stop(extract_timer);
+                    perf_logger.complete_event(log_event);
                     match source_set {
                         SourceSet::SourceSetName(source_set_name) => {
                             result.set_pending_source_set(source_set_name, sources);