See https://jenkins.debian.net/job/g-i-installation_debian_jessie_gnome_brltty/6/ and https://jenkins.debian.net/job/g-i-installation_debian_jessie_gnome_brltty/6//console and https://jenkins.debian.net/job/g-i-installation_debian_jessie_gnome_brltty/6//artifact/results/ if there are any.