FindBugs在将Android Gradle插件从3.1.3升级到3.2.0后停止工作

质量.gradle

plugins.apply('findbugs')

task findbugs(type: FindBugs) {
    ignoreFailures = false
    effort = 'max'
    reportLevel = 'high' // Report only high priority problems.

    classes = files("${project.projectDir}/build/intermediates/classes")
    source = fileTree('src/main/java')

    classpath = files()

    reports {
        xml.enabled = true
        html.enabled = false
    }

    excludeFilter = rootProject.file('quality/findbugs.xml')
} 

:

subprojects {
    afterEvaluate {
        project.apply from: '../quality/quality.gradle'
        tasks.findByName('findbugs').dependsOn('assemble')
        tasks.findByName('check').dependsOn('findbugs')
    }
}

但在我将Gradle Android插件从3.1.3升级到3.2.0之后,构建开始失败:

./gradlew clean build

> Task :app:findbugs FAILED
No files to be analyzed

...

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:findbugs'.
> Failed to run Gradle FindBugs Worker
   > Process 'Gradle FindBugs Worker 6' finished with non-zero exit value 1

changelog gradleandroid插件。有人能告诉我插件或我的设置有什么问题吗?