Andrew, 1:9.11.16+dfsg-3~build1 is wrong. The correct version is 1:9.11.16+dfsg-3~ubuntu1 (~ubuntu1 instead of ~build1).
Andrew, 1:9.11. 16+dfsg- 3~build1 is wrong. The correct version is 1:9.11. 16+dfsg- 3~ubuntu1 (~ubuntu1 instead of ~build1).