Sample code to demonstrate cannot serialize abstract class issue with Auto Value and Moshi

build.gradle

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support:appcompat-v7:25.1.1'
    compile 'com.android.support:support-v4:25.1.1'
    compile 'com.android.support:recyclerview-v7:25.1.1'
    compile 'com.android.support:design:25.1.1'
    compile 'com.squareup.picasso:picasso:2.5.2'
    compile 'com.squareup.retrofit2:retrofit:2.1.0'
    compile 'com.google.dagger:dagger:2.9'
    compile 'com.annimon:stream:1.1.5'
    compile 'com.squareup.retrofit2:converter-moshi:2.1.0'

    provided 'com.google.auto.value:auto-value:1.3' // needed for Android Studio
    apt 'com.google.auto.value:auto-value:1.3'

    apt 'com.ryanharter.auto.value:auto-value-moshi:0.4.2'
    provided 'com.ryanharter.auto.value:auto-value-moshi-annotations:0.4.2'

    testCompile 'junit:junit:4.12'
    testCompile 'org.mockito:mockito-core:2.7.1'
}

ModelTests.java

@RunWith(JUnit4.class)
public class ModelTests {
    @Test
    public void verifyJsonConvertsToModel() throws Exception {
        String sampleMovieJson = "{\"adult\":false,\"backdrop_path\":\"/lubzBMQLLmG88CLQ4F3TxZr2Q7N.jpg\",\"belongs_to_collection\":{\"id\":427084,\"name\":\"The Secret Life of Pets Collection\",\"poster_path\":\"/aDNbXvuRiuYxk8qCwXNQQ7UEHau.jpg\",\"backdrop_path\":null},\"budget\":75000000,\"genres\":[{\"id\":12,\"name\":\"Adventure\"},{\"id\":16,\"name\":\"Animation\"},{\"id\":35,\"name\":\"Comedy\"},{\"id\":10751,\"name\":\"Family\"}],\"homepage\":\"http://www.thesecretlifeofpets.com/\",\"id\":328111,\"imdb_id\":\"tt2709768\",\"original_language\":\"en\",\"original_title\":\"The Secret Life of Pets\",\"overview\":\"The quiet life of a terrier named Max is upended when his owner takes in Duke, a stray whom Max instantly dislikes.\",\"popularity\":129.924005,\"poster_path\":\"/WLQN5aiQG8wc9SeKwixW7pAR8K.jpg\",\"production_companies\":[{\"name\":\"Universal Pictures\",\"id\":33},{\"name\":\"Dentsu\",\"id\":6452},{\"name\":\"Illumination Entertainment\",\"id\":6704}],\"production_countries\":[{\"iso_3166_1\":\"US\",\"name\":\"United States of America\"}],\"release_date\":\"2016-06-18\",\"revenue\":874333497,\"runtime\":87,\"spoken_languages\":[{\"iso_639_1\":\"en\",\"name\":\"English\"}],\"status\":\"Released\",\"tagline\":\"Think this is what they do all day?\",\"title\":\"The Secret Life of Pets\",\"video\":false,\"vote_average\":5.8,\"vote_count\":2078}";

        Movie sampleMovie = Movie.create(328111, "The Secret Life of Pets", "/aDNbXvuRiuYxk8qCwXNQQ7UEHau.jpg", "The quiet life of a terrier named Max is upended when his owner takes in Duke, a stray whom Max instantly dislikes.", 5.8, "2016-06-18");

        Moshi moshi = new Moshi.Builder().build();

        JsonAdapter<Movie> adapter = moshi.adapter(Movie.class).lenient();

        assertEquals(adapter.fromJson(sampleMovieJson), sampleMovie);
    }

    @Test
    public void verifyJsonConvertsToModel2() throws Exception {
        String sampleMovieJson = "{\"adult\":false,\"backdrop_path\":\"/lubzBMQLLmG88CLQ4F3TxZr2Q7N.jpg\",\"belongs_to_collection\":{\"id\":427084,\"name\":\"The Secret Life of Pets Collection\",\"poster_path\":\"/aDNbXvuRiuYxk8qCwXNQQ7UEHau.jpg\",\"backdrop_path\":null},\"budget\":75000000,\"genres\":[{\"id\":12,\"name\":\"Adventure\"},{\"id\":16,\"name\":\"Animation\"},{\"id\":35,\"name\":\"Comedy\"},{\"id\":10751,\"name\":\"Family\"}],\"homepage\":\"http://www.thesecretlifeofpets.com/\",\"id\":328111,\"imdb_id\":\"tt2709768\",\"original_language\":\"en\",\"original_title\":\"The Secret Life of Pets\",\"overview\":\"The quiet life of a terrier named Max is upended when his owner takes in Duke, a stray whom Max instantly dislikes.\",\"popularity\":129.924005,\"poster_path\":\"/WLQN5aiQG8wc9SeKwixW7pAR8K.jpg\",\"production_companies\":[{\"name\":\"Universal Pictures\",\"id\":33},{\"name\":\"Dentsu\",\"id\":6452},{\"name\":\"Illumination Entertainment\",\"id\":6704}],\"production_countries\":[{\"iso_3166_1\":\"US\",\"name\":\"United States of America\"}],\"release_date\":\"2016-06-18\",\"revenue\":874333497,\"runtime\":87,\"spoken_languages\":[{\"iso_639_1\":\"en\",\"name\":\"English\"}],\"status\":\"Released\",\"tagline\":\"Think this is what they do all day?\",\"title\":\"The Secret Life of Pets\",\"video\":false,\"vote_average\":5.8,\"vote_count\":2078}";

        Movie2 sampleMovie = new Movie2();

        sampleMovie.setId(328111);
        sampleMovie.setName("The Secret Life of Pets");
        sampleMovie.setPosterUrl("/WLQN5aiQG8wc9SeKwixW7pAR8K.jpg");
        sampleMovie.setPlotSynopsis("The quiet life of a terrier named Max is upended when his owner takes in Duke, a stray whom Max instantly dislikes.");
        sampleMovie.setAverageRating(5.8);
        sampleMovie.setReleaseDate("2016-06-18");

        Moshi moshi = new Moshi.Builder().build();

        JsonAdapter<Movie2> adapter = moshi.adapter(Movie2.class).lenient();

        Movie2 convertedMovie = adapter.fromJson(sampleMovieJson);

        assertEquals(sampleMovie.getId(), convertedMovie.getId());
        assertEquals(sampleMovie.getName(), convertedMovie.getName());
        assertEquals(sampleMovie.getPosterUrl(), convertedMovie.getPosterUrl());
        assertEquals(sampleMovie.getPlotSynopsis(), convertedMovie.getPlotSynopsis());
        assertEquals(sampleMovie.getAverageRating(), convertedMovie.getAverageRating(), 0);
        assertEquals(sampleMovie.getReleaseDate(), convertedMovie.getReleaseDate());
    }
}

Movie.java

@AutoValue
public abstract class Movie {
    public abstract int id();
    @Json(name = "original_title")
    public abstract String name();
    @Json(name = "poster_path")
    public abstract String posterUrl();
    @Json(name = "overview")
    public abstract String plotSynopsis();
    @Json(name = "vote_average")
    public abstract double averageRating();
    @Json(name = "release_date")
    public abstract String releaseDate();

    public static Movie create(int id, @NonNull String name, @NonNull String posterUrl, @NonNull String plotSynopsis, double averageRating, @NonNull String releaseDate) {
        return new AutoValue_Movie(id, name, posterUrl, plotSynopsis, averageRating, releaseDate);
    }

    public static JsonAdapter<Movie> jsonAdapter(Moshi moshi) {
        return new AutoValue_Movie.MoshiJsonAdapter(moshi);
    }
}

Movie2.java

public class Movie2 {
    private int id;
    @Json(name = "original_title")
    private String name;
    @Json(name = "poster_path")
    private String posterUrl;
    @Json(name = "overview")
    private String plotSynopsis;
    @Json(name = "vote_average")
    private double averageRating;
    @Json(name = "release_date")
    private String releaseDate;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPosterUrl() {
        return posterUrl;
    }

    public void setPosterUrl(String posterUrl) {
        this.posterUrl = posterUrl;
    }

    public String getPlotSynopsis() {
        return plotSynopsis;
    }

    public void setPlotSynopsis(String plotSynopsis) {
        this.plotSynopsis = plotSynopsis;
    }

    public double getAverageRating() {
        return averageRating;
    }

    public void setAverageRating(double averageRating) {
        this.averageRating = averageRating;
    }

    public String getReleaseDate() {
        return releaseDate;
    }

    public void setReleaseDate(String releaseDate) {
        this.releaseDate = releaseDate;
    }
}