Maven Jacoco合并目标未采用提供的输入文件路径

我在jacoco合并目标中给出了以下配置

<configuration> 
    <fileSets> <!-- Implementation attribute not needed in Maven 3 --> 
        <fileSet> 
            <directory>${project.build.directory}/coverage-reports/</directory> 
        <includes> 
             <include>*.exec</include>
        </includes>
    </fileSet> 
</fileSets> 
<!-- File containing the merged data --> 
<destFile>${project.build.directory}/jacoco-merged/merged.exec</destFile>

${project.build.directory}/coverage reports/
*行政长官
${project.build.directory}/jacoco merged/merged.exec

但在合并过程中，它会一直在../target/jacoco.exec中查找exec文件，并跳过合并目标，但没有找到要合并的exec文件

我正在使用maven 3.3.9和JacocoMaven插件0.7.8