Lambda Test based TestNG Suite fails under Ant

build.xml

<?xml version="1.0" encoding="UTF-8"?>

<!-- ====================================================================== -->
<!-- Ant build file (http://ant.apache.org/) for Ant 1.6.2 or above.        -->
<!-- ====================================================================== -->

<project name="example" default="package" basedir=".">

  <!-- ====================================================================== -->
  <!-- Import maven-build.xml into the current project                        -->
  <!-- ====================================================================== -->

  <import file="maven-build.xml"/>
  
  <!-- ====================================================================== -->
  <!-- Help target                                                            -->
  <!-- ====================================================================== -->

  <target name="help">
    <echo message="Please run: $ant -projecthelp"/>
  </target>

  <target name="test" depends="compile-tests">
    <mkdir dir="${maven.test.reports}"/>
    <taskdef resource="testngtasks" classpathref="build.test.classpath" />
    <testng outputDir="${maven.test.reports}">
      <classfileset dir="${maven.build.testOutputDir}" includes="**/*.class" />
      <classpath>
        <path refid="build.test.classpath" />
        <pathelement location="${maven.build.outputDir}" />
        <pathelement location="${maven.build.testOutputDir}" />
      </classpath>
    </testng>
  </target>

</project>

maven-build.properties

#Generated by Maven Ant Plugin - DO NOT EDIT THIS FILE!
#Sat Nov 15 10:44:20 CET 2014
maven.settings.offline=false
maven.build.finalName=example-1.0-SNAPSHOT
maven.build.resourceDir.0=src/main/resources
maven.build.testOutputDir=${maven.build.dir}/test-classes
maven.build.testResourceDir.0=src/test/resources
maven.reporting.outputDirectory=${maven.build.dir}/site
project.build.sourceEncoding=UTF-8
maven.compiler.source=1.8
maven.build.srcDir.0=src/main/java
project.build.directory=${maven.build.dir}
maven.test.reports=${maven.build.dir}/test-reports
maven.build.dir=target
project.build.outputDirectory=${maven.build.outputDir}
maven.compiler.target=1.8
maven.build.testDir.0=src/test/java
maven.settings.interactiveMode=true
maven.repo.local=${user.home}/.m2/repository
maven.build.outputDir=${maven.build.dir}/classes

maven-build.xml

<?xml version="1.0" encoding="UTF-8"?>

<!-- ====================================================================== -->
<!-- Ant build file (http://ant.apache.org/) for Ant 1.6.2 or above.        -->
<!-- ====================================================================== -->

<!-- ====================================================================== -->
<!-- ===================== - DO NOT EDIT THIS FILE! - ===================== -->
<!-- ====================================================================== -->
<!--                                                                        -->
<!-- Any modifications will be overwritten.                                 -->
<!--                                                                        -->
<!-- Generated by Maven Ant Plugin on 11/15/14 10:44 AM                     -->
<!-- See: http://maven.apache.org/plugins/maven-ant-plugin/                 -->
<!--                                                                        -->
<!-- ====================================================================== -->

<project name="example-from-maven" default="package" basedir=".">

  <!-- ====================================================================== -->
  <!-- Build environment properties                                           -->
  <!-- ====================================================================== -->

  <property file="${user.home}/.m2/maven.properties"/>
  <property file="maven-build.properties"/>

  <property name="maven.build.finalName" value="example-1.0-SNAPSHOT"/>
  <property name="maven.build.dir" value="target"/>
  <property name="maven.build.outputDir" value="${maven.build.dir}/classes"/>
  <property name="maven.build.srcDir.0" value="src/main/java"/>
  <property name="maven.build.resourceDir.0" value="src/main/resources"/>
  <property name="maven.build.testOutputDir" value="${maven.build.dir}/test-classes"/>
  <property name="maven.build.testDir.0" value="src/test/java"/>
  <property name="maven.build.testResourceDir.0" value="src/test/resources"/>
  <property name="maven.test.reports" value="${maven.build.dir}/test-reports"/>
  <property name="maven.reporting.outputDirectory" value="${maven.build.dir}/site"/>

  <property name="maven.repo.local" value="${user.home}/.m2/repository"/>
  <property name="maven.settings.offline" value="false"/>
  <property name="maven.settings.interactiveMode" value="true"/>

  <!-- ====================================================================== -->
  <!-- Defining classpaths                                                    -->
  <!-- ====================================================================== -->

  <path id="build.classpath"/>
  <path id="build.test.classpath">
    <pathelement location="${maven.repo.local}/de/tobiasroeser/de.tobiasroeser.lambdatest/0.0.2/de.tobiasroeser.lambdatest-0.0.2.jar"/>
    <pathelement location="${maven.repo.local}/org/testng/testng/6.8.8/testng-6.8.8.jar"/>
    <pathelement location="${maven.repo.local}/org/beanshell/bsh/2.0b4/bsh-2.0b4.jar"/>
    <pathelement location="${maven.repo.local}/com/beust/jcommander/1.27/jcommander-1.27.jar"/>
  </path>

  <!-- ====================================================================== -->
  <!-- Cleaning up target                                                     -->
  <!-- ====================================================================== -->

  <target name="clean" description="Clean the output directory">
    <delete dir="${maven.build.dir}"/>
  </target>

  <!-- ====================================================================== -->
  <!-- Compilation target                                                     -->
  <!-- ====================================================================== -->

  <target name="compile" depends="get-deps" description="Compile the code">
    <mkdir dir="${maven.build.outputDir}"/>
    <javac destdir="${maven.build.outputDir}" 
           nowarn="false" 
           debug="true" 
           optimize="false" 
           deprecation="true" 
           target="${maven.compiler.target}" 
           verbose="false" 
           fork="false" 
           source="${maven.compiler.source}">
      <src>
        <pathelement location="${maven.build.srcDir.0}"/>
      </src>
      <classpath refid="build.classpath"/>
    </javac>
  </target>

  <!-- ====================================================================== -->
  <!-- Test-compilation target                                                -->
  <!-- ====================================================================== -->

  <target name="compile-tests" 
          depends="compile" 
          description="Compile the test code" 
          unless="maven.test.skip">
    <mkdir dir="${maven.build.testOutputDir}"/>
    <javac destdir="${maven.build.testOutputDir}" 
           nowarn="false" 
           debug="true" 
           optimize="false" 
           deprecation="true" 
           target="${maven.compiler.target}" 
           verbose="false" 
           fork="false" 
           source="${maven.compiler.source}">
      <src>
        <pathelement location="${maven.build.testDir.0}"/>
      </src>
      <classpath>
        <path refid="build.test.classpath"/>
        <pathelement location="${maven.build.outputDir}"/>
      </classpath>
    </javac>
  </target>

  <!-- ====================================================================== -->
  <!-- Run all tests                                                          -->
  <!-- ====================================================================== -->

  <target name="test" 
          depends="compile-tests, junit-missing" 
          unless="junit.skipped" 
          description="Run the test cases">
    <mkdir dir="${maven.test.reports}"/>
    <junit printSummary="yes" haltonerror="true" haltonfailure="true" fork="true" dir=".">
      <sysproperty key="basedir" value="."/>
      <formatter type="xml"/>
      <formatter type="plain" usefile="false"/>
      <classpath>
        <path refid="build.test.classpath"/>
        <pathelement location="${maven.build.outputDir}"/>
        <pathelement location="${maven.build.testOutputDir}"/>
      </classpath>
      <batchtest todir="${maven.test.reports}" unless="test">
        <fileset dir="${maven.build.testDir.0}">
          <include name="**/Test*.java"/>
          <include name="**/*Test.java"/>
          <include name="**/*TestCase.java"/>
          <exclude name="**/*Abstract*Test.java"/>
        </fileset>
      </batchtest>
      <batchtest todir="${maven.test.reports}" if="test">
        <fileset dir="${maven.build.testDir.0}">
          <include name="**/${test}.java"/>
          <exclude name="**/*Abstract*Test.java"/>
        </fileset>
      </batchtest>
    </junit>
  </target>

  <target name="test-junit-present">
    <available classname="junit.framework.Test" property="junit.present"/>
  </target>

  <target name="test-junit-status" 
          depends="test-junit-present">
    <condition property="junit.missing">
      <and>
        <isfalse value="${junit.present}"/>
        <isfalse value="${maven.test.skip}"/>
      </and>
    </condition>
    <condition property="junit.skipped">
      <or>
        <isfalse value="${junit.present}"/>
        <istrue value="${maven.test.skip}"/>
      </or>
    </condition>
  </target>

  <target name="junit-missing" 
          depends="test-junit-status" 
          if="junit.missing">
    <echo>=================================== WARNING ===================================</echo>
    <echo> JUnit is not present in your $ANT_HOME/lib directory. Tests not executed.</echo>
    <echo>===============================================================================</echo>
  </target>

  <!-- ====================================================================== -->
  <!-- Javadoc target                                                         -->
  <!-- ====================================================================== -->

  <target name="javadoc" description="Generates the Javadoc of the application">
    <javadoc sourcepath="${maven.build.srcDir.0}" 
             packagenames="*" 
             destdir="${maven.reporting.outputDirectory}/apidocs" 
             access="protected" 
             old="false" 
             verbose="false" 
             version="true" 
             use="true" 
             author="true" 
             splitindex="false" 
             nodeprecated="false" 
             nodeprecatedlist="false" 
             notree="false" 
             noindex="false" 
             nohelp="false" 
             nonavbar="false" 
             serialwarn="false" 
             charset="ISO-8859-1" 
             linksource="false" 
             breakiterator="false"/>
  </target>

  <!-- ====================================================================== -->
  <!-- Package target                                                         -->
  <!-- ====================================================================== -->

  <target name="package" depends="compile,test" description="Package the application">
    <jar jarfile="${maven.build.dir}/${maven.build.finalName}.jar" 
         compress="true" 
         index="false" 
         basedir="${maven.build.outputDir}" 
         excludes="**/package.html"/>
  </target>

  <!-- ====================================================================== -->
  <!-- A dummy target for the package named after the type it creates         -->
  <!-- ====================================================================== -->

  <target name="jar" depends="package" description="Builds the jar for the application"/>

  <!-- ====================================================================== -->
  <!-- Download dependencies target                                           -->
  <!-- ====================================================================== -->

  <target name="test-offline">
    <condition property="maven.mode.offline">
      <equals arg1="${maven.settings.offline}" arg2="true"/>
    </condition>
  </target>

  <target name="get-deps" 
          depends="test-offline" 
          description="Download all dependencies" 
          unless="maven.mode.offline">
    <mkdir dir="${maven.repo.local}"/>
    <mkdir dir="${maven.repo.local}/de/tobiasroeser/de.tobiasroeser.lambdatest/0.0.2"/>
    <get src="http://dl.bintray.com/lefou/poor-mans-lambda-test/de/tobiasroeser/de.tobiasroeser.lambdatest/0.0.2/de.tobiasroeser.lambdatest-0.0.2.jar" 
         dest="${maven.repo.local}/de/tobiasroeser/de.tobiasroeser.lambdatest/0.0.2/de.tobiasroeser.lambdatest-0.0.2.jar" 
         usetimestamp="false" 
         ignoreerrors="true"/>
    <get src="http://repo.maven.apache.org/maven2/de/tobiasroeser/de.tobiasroeser.lambdatest/0.0.2/de.tobiasroeser.lambdatest-0.0.2.jar" 
         dest="${maven.repo.local}/de/tobiasroeser/de.tobiasroeser.lambdatest/0.0.2/de.tobiasroeser.lambdatest-0.0.2.jar" 
         usetimestamp="false" 
         ignoreerrors="true"/>
    <mkdir dir="${maven.repo.local}/org/testng/testng/6.8.8"/>
    <get src="http://dl.bintray.com/lefou/poor-mans-lambda-test/org/testng/testng/6.8.8/testng-6.8.8.jar" 
         dest="${maven.repo.local}/org/testng/testng/6.8.8/testng-6.8.8.jar" 
         usetimestamp="false" 
         ignoreerrors="true"/>
    <get src="http://repo.maven.apache.org/maven2/org/testng/testng/6.8.8/testng-6.8.8.jar" 
         dest="${maven.repo.local}/org/testng/testng/6.8.8/testng-6.8.8.jar" 
         usetimestamp="false" 
         ignoreerrors="true"/>
    <mkdir dir="${maven.repo.local}/org/beanshell/bsh/2.0b4"/>
    <get src="http://dl.bintray.com/lefou/poor-mans-lambda-test/org/beanshell/bsh/2.0b4/bsh-2.0b4.jar" 
         dest="${maven.repo.local}/org/beanshell/bsh/2.0b4/bsh-2.0b4.jar" 
         usetimestamp="false" 
         ignoreerrors="true"/>
    <get src="http://repo.maven.apache.org/maven2/org/beanshell/bsh/2.0b4/bsh-2.0b4.jar" 
         dest="${maven.repo.local}/org/beanshell/bsh/2.0b4/bsh-2.0b4.jar" 
         usetimestamp="false" 
         ignoreerrors="true"/>
    <mkdir dir="${maven.repo.local}/com/beust/jcommander/1.27"/>
    <get src="http://dl.bintray.com/lefou/poor-mans-lambda-test/com/beust/jcommander/1.27/jcommander-1.27.jar" 
         dest="${maven.repo.local}/com/beust/jcommander/1.27/jcommander-1.27.jar" 
         usetimestamp="false" 
         ignoreerrors="true"/>
    <get src="http://repo.maven.apache.org/maven2/com/beust/jcommander/1.27/jcommander-1.27.jar" 
         dest="${maven.repo.local}/com/beust/jcommander/1.27/jcommander-1.27.jar" 
         usetimestamp="false" 
         ignoreerrors="true"/>
  </target>

</project>

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>org.example</groupId>
  <artifactId>example</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>jar</packaging>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <maven.compiler.source>1.8</maven.compiler.source>
     <maven.compiler.target>1.8</maven.compiler.target>
  </properties>

<repositories>
  <repository>
    <snapshots>
      <enabled>false</enabled>
    </snapshots>
    <id>bintray-lefou-poor-mans-lambda-test</id>
    <name>bintray-lefou-poor-mans-lambda-test</name>
    <url>http://dl.bintray.com/lefou/poor-mans-lambda-test</url>
  </repository>
</repositories>

<dependencies>
  <dependency>
    <groupId>de.tobiasroeser</groupId>
    <artifactId>de.tobiasroeser.lambdatest</artifactId>
    <version>0.0.2</version>
    <scope>test</scope>
  </dependency>
  <dependency>
    <groupId>org.testng</groupId>
    <artifactId>testng</artifactId>
    <version>6.8.8</version>
    <scope>test</scope>
  </dependency>
</dependencies>

</project>

SimpleTest.java

// copy this to: src/test/java/org/example/SimpleTest.java
package org.example;

import de.tobiasroeser.lambdatest.testng.FreeSpec;

class SimpleTest extends FreeSpec {{

  test("1 + 1 = 2", () -> {
    assertEquals(1 + 1, 2);
  });

  test("a pending test", () -> pending());

  test("divide by zero", () -> {
    int a = 2;
    int b = 0;
    intercept(ArithmeticException.class, () -> {
      int c = a / b;
    });
  });

}}

The test suite runs successfully when started from Maven, but fails abnormally without even reporting a failure (without any exception) with Ant.

Output from Maven:

lefou@x3 /tmp/example $ mvn clean test
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=256m; support was removed in 8.0
[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building example 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ example ---
[INFO] Deleting /tmp/example/target
[INFO] 
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ example ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory /tmp/example/src/main/resources
[INFO] 
[INFO] --- maven-compiler-plugin:2.5.1:compile (default-compile) @ example ---
[INFO] Compiling 1 source file to /tmp/example/target/classes
[INFO] 
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ example ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory /tmp/example/src/test/resources
[INFO] 
[INFO] --- maven-compiler-plugin:2.5.1:testCompile (default-testCompile) @ example ---
[INFO] Compiling 1 source file to /tmp/example/target/test-classes
[INFO] 
[INFO] --- maven-surefire-plugin:2.12.4:test (default-test) @ example ---
[INFO] Surefire report directory: /tmp/example/target/surefire-reports

-------------------------------------------------------
 T E S T S
-------------------------------------------------------
Running org.example.SimpleTest
Configuring TestNG with: org.apache.maven.surefire.testng.conf.TestNG652Configurator@759ebb3d
Running 3 tests in org.example.SimpleTest:
-- SUCCESS SimpleTest: 1 + 1 = 2
-- SKIPPED SimpleTest: a pending test (pending)
-- SUCCESS SimpleTest: divide by zero
Tests run: 3, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.303 sec

Results :

Tests run: 3, Failures: 0, Errors: 0, Skipped: 0

[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.441s
[INFO] Finished at: Sat Nov 15 11:06:41 CET 2014
[INFO] Final Memory: 13M/161M
[INFO] ------------------------------------------------------------------------

Output from Ant:

lefou@x3 /tmp/example $ ant clean test
Buildfile: /tmp/example/build.xml

clean:
   [delete] Deleting directory /tmp/example/target

test-offline:

get-deps:
      [get] Getting: http://dl.bintray.com/lefou/poor-mans-lambda-test/de/tobiasroeser/de.tobiasroeser.lambdatest/0.0.2/de.tobiasroeser.lambdatest-0.0.2.jar
      [get] To: /home/lefou/.m2/repository/de/tobiasroeser/de.tobiasroeser.lambdatest/0.0.2/de.tobiasroeser.lambdatest-0.0.2.jar
      [get] Getting: http://repo.maven.apache.org/maven2/de/tobiasroeser/de.tobiasroeser.lambdatest/0.0.2/de.tobiasroeser.lambdatest-0.0.2.jar
      [get] To: /home/lefou/.m2/repository/de/tobiasroeser/de.tobiasroeser.lambdatest/0.0.2/de.tobiasroeser.lambdatest-0.0.2.jar
      [get] Error opening connection java.io.FileNotFoundException: http://repo.maven.apache.org/maven2/de/tobiasroeser/de.tobiasroeser.lambdatest/0.0.2/de.tobiasroeser.lambdatest-0.0.2.jar
      [get] Error opening connection java.io.FileNotFoundException: http://repo.maven.apache.org/maven2/de/tobiasroeser/de.tobiasroeser.lambdatest/0.0.2/de.tobiasroeser.lambdatest-0.0.2.jar
      [get] Error opening connection java.io.FileNotFoundException: http://repo.maven.apache.org/maven2/de/tobiasroeser/de.tobiasroeser.lambdatest/0.0.2/de.tobiasroeser.lambdatest-0.0.2.jar
      [get] Can't get http://repo.maven.apache.org/maven2/de/tobiasroeser/de.tobiasroeser.lambdatest/0.0.2/de.tobiasroeser.lambdatest-0.0.2.jar to /home/lefou/.m2/repository/de/tobiasroeser/de.tobiasroeser.lambdatest/0.0.2/de.tobiasroeser.lambdatest-0.0.2.jar
      [get] Getting: http://dl.bintray.com/lefou/poor-mans-lambda-test/org/testng/testng/6.8.8/testng-6.8.8.jar
      [get] To: /home/lefou/.m2/repository/org/testng/testng/6.8.8/testng-6.8.8.jar
      [get] Error opening connection java.io.FileNotFoundException: http://dl.bintray.com/lefou/poor-mans-lambda-test/org/testng/testng/6.8.8/testng-6.8.8.jar
      [get] Error opening connection java.io.FileNotFoundException: http://dl.bintray.com/lefou/poor-mans-lambda-test/org/testng/testng/6.8.8/testng-6.8.8.jar
      [get] Error opening connection java.io.FileNotFoundException: http://dl.bintray.com/lefou/poor-mans-lambda-test/org/testng/testng/6.8.8/testng-6.8.8.jar
      [get] Can't get http://dl.bintray.com/lefou/poor-mans-lambda-test/org/testng/testng/6.8.8/testng-6.8.8.jar to /home/lefou/.m2/repository/org/testng/testng/6.8.8/testng-6.8.8.jar
      [get] Getting: http://repo.maven.apache.org/maven2/org/testng/testng/6.8.8/testng-6.8.8.jar
      [get] To: /home/lefou/.m2/repository/org/testng/testng/6.8.8/testng-6.8.8.jar
      [get] Getting: http://dl.bintray.com/lefou/poor-mans-lambda-test/org/beanshell/bsh/2.0b4/bsh-2.0b4.jar
      [get] To: /home/lefou/.m2/repository/org/beanshell/bsh/2.0b4/bsh-2.0b4.jar
      [get] Error opening connection java.io.FileNotFoundException: http://dl.bintray.com/lefou/poor-mans-lambda-test/org/beanshell/bsh/2.0b4/bsh-2.0b4.jar
      [get] Error opening connection java.io.FileNotFoundException: http://dl.bintray.com/lefou/poor-mans-lambda-test/org/beanshell/bsh/2.0b4/bsh-2.0b4.jar
      [get] Error opening connection java.io.FileNotFoundException: http://dl.bintray.com/lefou/poor-mans-lambda-test/org/beanshell/bsh/2.0b4/bsh-2.0b4.jar
      [get] Can't get http://dl.bintray.com/lefou/poor-mans-lambda-test/org/beanshell/bsh/2.0b4/bsh-2.0b4.jar to /home/lefou/.m2/repository/org/beanshell/bsh/2.0b4/bsh-2.0b4.jar
      [get] Getting: http://repo.maven.apache.org/maven2/org/beanshell/bsh/2.0b4/bsh-2.0b4.jar
      [get] To: /home/lefou/.m2/repository/org/beanshell/bsh/2.0b4/bsh-2.0b4.jar
      [get] Getting: http://dl.bintray.com/lefou/poor-mans-lambda-test/com/beust/jcommander/1.27/jcommander-1.27.jar
      [get] To: /home/lefou/.m2/repository/com/beust/jcommander/1.27/jcommander-1.27.jar
      [get] Error opening connection java.io.FileNotFoundException: http://dl.bintray.com/lefou/poor-mans-lambda-test/com/beust/jcommander/1.27/jcommander-1.27.jar
      [get] Error opening connection java.io.FileNotFoundException: http://dl.bintray.com/lefou/poor-mans-lambda-test/com/beust/jcommander/1.27/jcommander-1.27.jar
      [get] Error opening connection java.io.FileNotFoundException: http://dl.bintray.com/lefou/poor-mans-lambda-test/com/beust/jcommander/1.27/jcommander-1.27.jar
      [get] Can't get http://dl.bintray.com/lefou/poor-mans-lambda-test/com/beust/jcommander/1.27/jcommander-1.27.jar to /home/lefou/.m2/repository/com/beust/jcommander/1.27/jcommander-1.27.jar
      [get] Getting: http://repo.maven.apache.org/maven2/com/beust/jcommander/1.27/jcommander-1.27.jar
      [get] To: /home/lefou/.m2/repository/com/beust/jcommander/1.27/jcommander-1.27.jar

compile:
    [mkdir] Created dir: /tmp/example/target/classes
    [javac] /tmp/example/maven-build.xml:76: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds
    [javac] Compiling 1 source file to /tmp/example/target/classes

compile-tests:
    [mkdir] Created dir: /tmp/example/target/test-classes
    [javac] /tmp/example/maven-build.xml:101: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds
    [javac] Compiling 1 source file to /tmp/example/target/test-classes

test:
    [mkdir] Created dir: /tmp/example/target/test-reports
   [testng] [TestNG] Running:
   [testng]   Ant suite
   [testng] 
   [testng] Running 3 tests in org.example.SimpleTest:
   [testng] -- SUCCESS SimpleTest: 1 + 1 = 2

BUILD SUCCESSFUL
Total time: 4 seconds

This issue was fixed in lefou/LambdaTest#4