Error-prone 2.0 error repro case

repro.sh

#!/bin/sh

git clone https://github.com/tbroyer/gradle-errorprone-plugin.git
cd gradle-errorprone-plugin
./gradlew build
cd -

mkdir repro
cd repro

cp -R ../gradle-errorprone-plugin/gradle* ./

mkdir -p src/main/java/foo
echo '
buildscript {
  dependencies {
    classpath files("../gradle-errorprone-plugin/build/libs/gradle-errorprone-plugin-0.0.6-SNAPSHOT.jar")
  }
}

repositories {
  mavenCentral()
}

apply plugin: "java"
apply plugin: "net.ltgt.errorprone"
' > build.gradle

echo 'package foo;

public abstract class Token {
}
' > src/main/java/foo/Token.java

echo 'package foo;

public class FooToken extends Token {
}
' > src/main/java/foo/FooToken.java

./gradlew build

ls build/classes/main/foo/