Snapcraft cleanbuild fails on my Ubuntu 18.04 machine with german locale because it fails to read the german output of lxc info. Log: neothethird@NeoTheLaptop:~/Code/ubports-installer$ snapcraft cleanbuild --target-arch amd64 Setting target machine to 'amd64' snapcraft-daily-next-donkey wird erstellt snapcraft-daily-next-donkey wird gestartet Stopping local:snapcraft-daily-next-donkey Failed to detect container architecture: The output from 'lxc info' could not be read: Name: snapcraft-daily-next-donkey Remote: unix:// Architektur: x86_64 Erstellt: 2018/07/04 08:41 UTC Status : Running Type: ephemeral Profile: default Pid: 28003 Ips: eth0: inet6 fe80::216:3eff:fec2:724d veth8BYWGX lo: inet 127.0.0.1 lo: inet6 ::1 Quellen: Prozesse: 5 CPU usage: CPU usage (in seconds): 0 Memory usage: Arbeitsspeicher (aktuell): 19.95MB Memory (peak): 22.56MB Network usage: eth0: Bytes empfangen: 340B Bytes gesendet: 176B Pakete empfangen: 2 Pakete gesendet: 2 lo: Bytes empfangen: 0B Bytes gesendet: 0B Pakete empfangen: 0 Pakete gesendet: 0 As you can see, the arch is returned correctly, but the output can not be parsed. Maybe snapcraft could also look at the arch that is passed as a command line argument and use that if it can't parse the output?