https://github.com/jboss-logging/jboss-logging-tools/pull/81 

Author: Bernhard M. Wiedemann
Date: 2020-05-09

toolchain patch for resteasy

Index: jboss-logging-tools-2.2.1.Final/processor/src/main/java/org/jboss/logging/processor/generator/model/ClassModelHelper.java
===================================================================
--- jboss-logging-tools-2.2.1.Final.orig/processor/src/main/java/org/jboss/logging/processor/generator/model/ClassModelHelper.java
+++ jboss-logging-tools-2.2.1.Final/processor/src/main/java/org/jboss/logging/processor/generator/model/ClassModelHelper.java
@@ -52,7 +52,11 @@ public final class ClassModelHelper {
      */
     static String generatedDateValue() {
         final SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ");
-        return sdf.format(new Date());
+        
+        Date d = System.getenv("SOURCE_DATE_EPOCH") == null ?
+          new Date() :
+          new Date(1000 * Long.parseLong(System.getenv("SOURCE_DATE_EPOCH")));
+        return sdf.format(d);
     }
 
     /**