Maven & AutoValue: Crash on openjdk8, Compile error on openjdk11

Description of the problem

After adding ErrorProne to my project as specified on https://errorprone.info/docs/installation by adding this to my pom.xml:

  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.8.0</version>
        <configuration>
          <source>8</source>
          <target>8</target>
+          <compilerArgs>
+            <arg>-XDcompilePolicy=simple</arg>
+            <arg>-Xplugin:ErrorProne</arg>
+          </compilerArgs>
+          <annotationProcessorPaths>
+            <path>
+              <groupId>com.google.errorprone</groupId>
+              <artifactId>error_prone_core</artifactId>
+              <version>2.5.1</version>
+            </path>
+          </annotationProcessorPaths>
        </configuration>
      </plugin>

mvn install -DskipTests=true -Dmaven.javadoc.skip=true -B -V gets me a compiler crash on openjdk8, and a compilation error where @AutoValue generated code isn’t found on openjdk11.

See commit here, was part of this PR.

See full errors from Travis CI here

Bugs: what’s the simplest, easiest way to reproduce this bug? Please provide a minimal example if possible.

$ git clone git://github.com/google/acai
(make above edit)
$ mvn clean package

What version of Error Prone are you using?

2.5.1

Have you found anything relevant by searching the web?

No. Not sure if the problem is Maven, the maven-compiler-plugin version, AutoValue or the error_prone version either.

[cushon]

Would it make sense to add explicit mention of the <annotationProcessorPaths> to the Maven section in the doc? I ignored that at the end because I thought it didn’t apply, and I didn’t need it before.

Good idea, how does https://github.com/google/error-prone/commit/0b8bd1c7b78515d28088b6c3f0570b4bf8a47502 look?

[icmdaf]

Looks good, thanks!