Maven Ant tasks has been EOLed (https://maven.apache.org/ant-tasks/). Switch to Maven Artficat

Resolver Ant tasks instead (https://maven.apache.org/resolver-ant-tasks/)

fetch.xml

@@ -98,7 +98,7 @@ Set -Ddest=LOCATION on the command line
 
 
   <target name="macros" depends="pick-dest,get-m2"
-          xmlns:artifact="antlib:org.apache.maven.artifact.ant">
+          xmlns:resolver="antlib:org.apache.maven.resolver.ant">
     <fail>
       Cannot execute multiple targets due to the bug in Maven Ant tasks
       <condition>
@@ -119,16 +119,21 @@ Set -Ddest=LOCATION on the command line
             </not>
           </condition>
         </fail>
-        <artifact:dependencies pathID="@{archive}.path" useScope="runtime">
-          <dependency groupId="@{project}"
-                      artifactId="@{archive}"
-                      version="${@{archive}.version}">
-            <!-- exclude dependencies of ant-antunit (they should be in optional scope) -->
-            <exclusion groupId="org.apache.ant" artifactId="ant"/>
-            <exclusion groupId="org.apache.ant" artifactId="ant-launcher"/>
-          </dependency>
-          <artifact:remoteRepository url="@{repository}" id="@{id}"/>
-        </artifact:dependencies>
+        <resolver:remoterepo url="@{repository}" id="@{id}"/>
+        <resolver:resolve>
+          <dependencies id="@{archive}.path">
+            <dependency groupId="@{project}"
+                        artifactId="@{archive}"
+                        version="${@{archive}.version}"
+                        scope="runtime">
+              <!-- exclude dependencies of ant-antunit (they should be in optional scope) -->
+              <exclusion groupId="org.apache.ant" artifactId="ant"/>
+              <exclusion groupId="org.apache.ant" artifactId="ant-launcher"/>
+            </dependency>
+          </dependencies>
+          <!-- create a path containing all these resolved dependencies -->
+          <path refid="@{archive}.path"/>
+        </resolver:resolve>
         <!-- now we are left with the problem of getting the files into our directory -->
         <copy todir="${dest.dir}">
           <path refid="@{archive}.path"/>

get-m2.xml

@@ -48,10 +48,10 @@
   <property file="get-m2.properties" />
 
   <property name="m2.antlib.resource"
-            value="org/apache/maven/artifact/ant/antlib.xml" />
+            value="org/apache/maven/resolver/ant/antlib.xml" />
 
   <property name="m2.antlib.uri"
-            value="antlib:org.apache.maven.artifact.ant" />
+            value="antlib:org.apache.maven.resolver.ant" />
 
   <macrodef name="require">
     <attribute name="property" />
@@ -100,7 +100,7 @@
   </target>
 
   <target name="checksum-mismatch" depends="validate-m2-checksum"
-          if="m2.sha1.checksum" unless="checksum.equal">
+          if="m2.sha1.checksum" unless="${checksum.equal}">
     <delete file="${m2.artifact}" />
     <fail>
       Failed to verify the downloaded file ${m2.antlib.url}" against the checksum
@@ -116,6 +116,6 @@
   </target>
 
   <target name="get-m2" depends="checksum-match"
-      description="Download the Maven2 Ant tasks" />
+      description="Download the Maven Artifact Resolver Ant tasks" />
 
 </project>

lib/libraries.properties

@@ -16,14 +16,14 @@
 # This file declares the libraries for use in a given release of the components
 
 # If you change this, change the checksum to match
-m2.version=2.1.3
-m2.url=https://archive.apache.org/dist/maven/ant-tasks
-m2.artifact-name=maven-ant-tasks
-m2.jar.name=${m2.artifact-name}-${m2.version}.jar
+m2.version=1.4.0
+m2.url=https://repo1.maven.org/maven2/org/apache/maven/resolver
+m2.artifact-name=maven-resolver-ant-tasks
+m2.jar.name=${m2.artifact-name}-${m2.version}-uber.jar
 #this is the URL of the antlib library, that is pulled down for everything else.
-m2.antlib.url=${m2.url}/${m2.version}/binaries/${m2.jar.name}
+m2.antlib.url=${m2.url}/${m2.artifact-name}/${m2.version}/${m2.jar.name}
 #this is the sha1 checksum of the artifact
-m2.sha1.checksum=b09be554228d66d208e5fef5266844aacf443abc
+m2.sha1.checksum=c4642858aa22465650ad2a469b24e22696177441
 
 # Repository to use by default for fetching dependencies.
 m2.repo=https://repo1.maven.org/maven2/