See https://jenkins.debian.net/job/g-i-installation_debian_jessie_gnome_brltty/77/ and https://jenkins.debian.net/job/g-i-installation_debian_jessie_gnome_brltty/77//console and https://jenkins.debian.net/job/g-i-installation_debian_jessie_gnome_brltty/77//artifact/results/ if there are any.