W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list.d/signal-xenial.list:1 and /etc/apt/sources.list.d/signal-xenial.list:2
W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list.d/signal-xenial.list:1 and /etc/apt/sources.list.d/signal-xenial.list:2
W: Target Translations (main/i18n/Translation-en_US) is configured multiple times in /etc/apt/sources.list.d/signal-xenial.list:1 and /etc/apt/sources.list.d/signal-xenial.list:2
W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list.d/signal-xenial.list:1 and /etc/apt/sources.list.d/signal-xenial.list:2