Enable fail on compiler warnings

Author: mhalbritter

pom.xml

@@ -165,6 +165,17 @@
 					<artifactId>maven-surefire-plugin</artifactId>
 					<version>3.5.3</version>
 				</plugin>
+				<plugin>
+					<groupId>org.apache.maven.plugins</groupId>
+					<artifactId>maven-compiler-plugin</artifactId>
+					<configuration>
+						<failOnWarning>true</failOnWarning>
+						<compilerArgs>
+							<arg>-Xlint:all</arg>
+							<arg>-Xlint:-processing</arg>
+						</compilerArgs>
+					</configuration>
+				</plugin>
 			</plugins>
 		</pluginManagement>
 		<plugins>

start-site-verification/src/test/java/io/spring/start/site/DependencyResolver.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2024 the original author or authors.
+ * Copyright 2012-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -73,6 +73,7 @@ final class DependencyResolver {
 
 	private final RepositorySystem repositorySystem;
 
+	@SuppressWarnings("deprecation")
 	DependencyResolver(Path localRepositoryLocation) {
 		try {
 			ServiceLocator serviceLocator = createServiceLocator();
@@ -168,6 +169,7 @@ private String getVersion(String groupId, String artifactId, String version, Lis
 		return null;
 	}
 
+	@SuppressWarnings("deprecation")
 	private static ServiceLocator createServiceLocator() {
 		DefaultServiceLocator locator = MavenRepositorySystemUtils.newServiceLocator();
 		locator.addService(RepositorySystem.class, DefaultRepositorySystem.class);