NPE on missing Service?

service/processor/src/test/java/com/google/auto/service/processor/AutoServiceProcessorTest.java

@@ -23,6 +23,7 @@
 import com.google.testing.compile.Compiler;
 import com.google.testing.compile.JavaFileObjects;
 import javax.tools.StandardLocation;
+import org.junit.Ignore;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
@@ -144,4 +145,21 @@ public void nestedGenericWithVerifyOptionAndSuppressWarnings() {
         .contentsAsUtf8String()
         .isEqualTo("test.EnclosingGeneric$GenericServiceProvider\n");
   }
+
+  @Test @Ignore
+  public void missing() {
+    Compilation compilation =
+            Compiler.javac()
+                    .withProcessors(new AutoServiceProcessor())
+                    .withOptions("-Averify=true")
+                    .compile(
+                            JavaFileObjects.forResource("test/GenericServiceProviderWithMissingServiceClass.java")
+                    );
+    assertThat(compilation).succeededWithoutWarnings();
+    assertThat(compilation)
+            .generatedFile(StandardLocation.CLASS_OUTPUT, "META-INF/services/test.GenericService")
+            .contentsAsUtf8String()
+            .isEqualTo("test.EnclosingGeneric$GenericServiceProvider\n");
+  }
+
 }

service/processor/src/test/resources/test/GenericServiceProviderWithMissingServiceClass.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package test;
+
+import com.google.auto.service.AutoService;
+
+/**
+ * An implementation of a service with a type parameter, which by default will produce a warning
+ * if you compile with {@code -Averify=true}.
+ */
+@AutoService(MissingServiceClass.class)
+public class GenericServiceProviderWithMissingServiceClass<T> implements MissingServiceClass<T> {}