Fix flogger compile time errors

Change-Id: Ia4e01434820647d926c04170543bb0a55fa74894

src/test/java/com/ericsson/gerrit/plugins/eventslog/sql/SQLStoreTest.java

diff --git a/src/test/java/com/ericsson/gerrit/plugins/eventslog/sql/SQLStoreTest.java b/src/test/java/com/ericsson/gerrit/plugins/eventslog/sql/SQLStoreTest.java
index 325954a..223f37c 100644
--- a/src/test/java/com/ericsson/gerrit/plugins/eventslog/sql/SQLStoreTest.java
+++ b/src/test/java/com/ericsson/gerrit/plugins/eventslog/sql/SQLStoreTest.java
@@ -486,7 +486,7 @@
     @Override
     public ScheduledFuture<?> scheduleWithFixedDelay(
         Runnable command, long initialDelay, long delay, TimeUnit unit) {
-      log.atInfo().log(command.toString());
+      log.atInfo().log("%s", command);
       command.run();
       return null;
     }