EP 2.3.2 throws Illegal reflective access on JDK 11

[mdindoffer]

Please answer these questions before submitting your issue. Thanks!

What version of Error Prone are you using?

2.3.2

Does this issue reproduce with the latest release?

Yes

What did you do?

Tried to run errorprone as a maven plugin on my hobby project with Maven 3.5.4, Oracle JDK 11.0.1.
To reproduce simply clone the project, checkout 861b20 and use following configuration:

<configuration>
	<source>7</source>
	<target>7</target>
        <release>7</release>
	<compilerArgs>
		<arg>-XDcompilePolicy=simple</arg>
		<arg>-Xplugin:ErrorProne</arg>
	</compilerArgs>
	<annotationProcessorPaths>
		<path>
			<groupId>com.google.errorprone</groupId>
			<artifactId>error_prone_core</artifactId>
			<version>2.3.2</version>
		</path>
	</annotationProcessorPaths>
</configuration>

What did you expect to see?

No errors or warnings

What did you see instead?

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.google.errorprone.util.FindIdentifiers (file:/C:/Users/Xxx/.m2/repository/com/google/errorprone/error_prone_check_api/2.3.2/error_prone_check_api-2.3.2.jar) to method com.sun.tools.javac.comp.Resolve.findIdent(com.sun.tools.javac.comp.Env,com.sun.tools.javac.util.Name,com.sun.tools.javac.code.Kinds$KindSelector)
WARNING: Please consider reporting this to the maintainers of com.google.errorprone.util.FindIdentifiers
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

[chanseokoh]

Related #1157.

[cushon]

This is the same underlying problem as #1157.