error-prone-pom.xml

<build>
  <plugins>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-compiler-plugin</artifactId>
      <version>3.3</version>
      <configuration>
        <compilerId>javac-with-errorprone</compilerId>
        <forceJavacCompilerUse>true</forceJavacCompilerUse>
        <!-- maven-compiler-plugin defaults to targeting Java 5, but our javac
             only supports >=6 -->
        <source>7</source>
        <target>7</target>
      </configuration>
      <dependencies>
        <dependency>
          <groupId>org.codehaus.plexus</groupId>
          <artifactId>plexus-compiler-javac-errorprone</artifactId>
          <version>2.8</version>
        </dependency>
        <!-- override plexus-compiler-javac-errorprone's dependency on
             Error Prone with the latest version -->
        <dependency>
          <groupId>com.google.errorprone</groupId>
          <artifactId>error_prone_core</artifactId>
          <version>2.2.0</version>
        </dependency>
      </dependencies>
    </plugin>
  </plugins>
</build>