Eu tenho um projeto android simples que eu criei com o Android Studio 0.4.0. Eu uso Gradle 1.9 e Gradle Android Plugin 0.7. Ontem eu adicionei o Jake Wharton'sBiblioteca ButterKnife no meu script de criação gradle:

dependencies {
            compile 'com.android.support:support-v4:19.0.0'
            compile 'com.android.support:appcompat-v7:19.0.0'

            // Butterknife
            compile 'com.jakewharton:butterknife:4.0.1'
}

Quando executo o aplicativo no Android Studio, a compilação é executada corretamente e executada corretamente em meus dispositivos. Mas quando eu tento (a partir da linha de comando)gradle build a construção falha. Aqui está uma parte do meu relatório de fiapos:

InvalidPackage: Package not included in Android

/home/yami/.gradle/caches/modules-2/files-2.1/com.jakewharton/butterknife/4.0.1/f43b36925363701633d01adb8e54df7150397a78/butterknife-4.0.1.jar: Invalid package reference in library; not included in Android: javax.annotation.processing. Referenced from butterknife.internal.InjectViewProcessor.
/home/yami/.gradle/caches/modules-2/files-2.1/com.jakewharton/butterknife/4.0.1/f43b36925363701633d01adb8e54df7150397a78/butterknife-4.0.1.jar: Invalid package reference in library; not included in Android: javax.annotation.processing. Referenced from butterknife.internal.InjectViewProcessor.
/home/yami/.gradle/caches/modules-2/files-2.1/com.jakewharton/butterknife/4.0.1/f43b36925363701633d01adb8e54df7150397a78/butterknife-4.0.1.jar: Invalid package reference in library; not included in Android: javax.annotation.processing. Referenced from butterknife.internal.InjectViewProcessor.
/home/yami/.gradle/caches/modules-2/files-2.1/com.jakewharton/butterknife/4.0.1/f43b36925363701633d01adb8e54df7150397a78/butterknife-4.0.1.jar: Invalid package reference in library; not included in Android: javax.annotation.processing. Referenced from butterknife.internal.InjectViewProcessor.
/home/yami/.gradle/caches/modules-2/files-2.1/com.jakewharton/butterknife/4.0.1/f43b36925363701633d01adb8e54df7150397a78/butterknife-4.0.1.jar: Invalid package reference in library; not included in Android: javax.annotation.processing. Referenced from butterknife.internal.InjectViewProcessor.

Talvez eu esteja faltando alguma coisa, mas não ser capaz de construir o projeto nos blocos de terminais a possibilidade de CI para projetos Android.

Qualquer ajuda seria ótimo.