Release v0.11 of gradle-apt-plugin is made for gradle-4.0.2: https://github.com/tbroyer/gradle-apt-plugin/blob/v0.11/gradle/wrapper/gradle-wrapper.properties
Therefore, package version v0.10 of gradle-apt-plugin, which is made for gradle-3.4: https://github.com/tbroyer/gradle-apt-plugin/blob/v0.10/gradle/wrapper/gradle-wrapper.properties. And, current gradle in debian sid is 3.4.1-7: https://packages.debian.org/sid/gradle