installation fails due to an error downloading a (unattended-upgrade?) deb

[Arash Slp]

May 21 09:17:37 ubuntu subiquity_log.3625[15764]: E: Failed to fetch http://ir.archive.ubuntu.com/ubuntu/pool/universe/p/pocketsphinx/pocketsphinx-en-us_0.8.0%2breal5prealpha%2b1-15ubuntu5_all.deb 404 Not Found [IP: 185.135.47.5 80]
May 21 09:17:37 ubuntu subiquity_log.3625[15764]: E: Some files failed to download
May 21 09:17:37 ubuntu subiquity_log.3625[15508]: Running command ['udevadm', 'settle'] with allowed return codes [0] (capture=False)
May 21 09:17:37 ubuntu subiquity_log.3625[15508]: TIMED subp(['udevadm', 'settle']): 0.007
May 21 09:17:37 ubuntu subiquity_log.3625[15508]: Running command ['mount', '--make-private', '/target/usr/bin/ischroot'] with allowed return codes [0] (capture=False)
May 21 09:17:37 ubuntu subiquity_log.3625[15508]: Running command ['umount', '/target/usr/bin/ischroot'] with allowed return codes [0] (capture=False)
May 21 09:17:37 ubuntu subiquity_log.3625[15508]: Running command ['mount', '--make-private', '/target/sys/firmware/efi/efivars'] with allowed return codes [0] (capture=False)
May 21 09:17:37 ubuntu subiquity_log.3625[15508]: Running command ['umount', '/target/sys/firmware/efi/efivars'] with allowed return codes [0] (capture=False)
May 21 09:17:37 ubuntu subiquity_log.3625[15508]: Running command ['mount', '--make-private', '/target/sys'] with allowed return codes [0] (capture=False)
May 21 09:17:37 ubuntu subiquity_log.3625[15508]: Running command ['umount', '/target/sys'] with allowed return codes [0] (capture=False)
May 21 09:17:37 ubuntu subiquity_log.3625[15508]: Running command ['mount', '--make-private', '/target/run'] with allowed return codes [0] (capture=False)
May 21 09:17:37 ubuntu subiquity_log.3625[15508]: Running command ['umount', '/target/run'] with allowed return codes [0] (capture=False)
May 21 09:17:37 ubuntu subiquity_log.3625[15508]: Running command ['mount', '--make-private', '/target/proc'] with allowed return codes [0] (capture=False)
May 21 09:17:37 ubuntu subiquity_log.3625[15508]: Running command ['umount', '/target/proc'] with allowed return codes [0] (capture=False)
May 21 09:17:37 ubuntu subiquity_log.3625[15508]: Running command ['mount', '--make-private', '/target/dev'] with allowed return codes [0] (capture=False)
May 21 09:17:37 ubuntu subiquity_log.3625[15508]: Running command ['umount', '/target/dev'] with allowed return codes [0] (capture=False)
May 21 09:17:37 ubuntu subiquity_log.3625[15508]: system install failed for ['ubuntu-restricted-addons']: Unexpected error while running command.
May 21 09:17:37 ubuntu subiquity_log.3625[15508]: Command: ['unshare', '--fork', '--pid', '--mount-proc=/target/proc', '--', 'chroot', '/target', 'apt-get', '--quiet', '--assume-yes', '--option=Dpkg::options::=--force-unsafe-io', '--option=Dpkg::Options::=--force-confold', 'install', '--download-only', 'ubuntu-restricted-addons']
May 21 09:17:37 ubuntu subiquity_log.3625[15508]: Exit code: 100
May 21 09:17:37 ubuntu subiquity_log.3625[15508]: Reason: -
May 21 09:17:37 ubuntu subiquity_log.3625[15508]: Stdout: ''
May 21 09:17:37 ubuntu subiquity_log.3625[15508]: Stderr: ''
May 21 09:17:37 ubuntu subiquity_log.3625[15508]: finish: cmd-system-install: FAIL: curtin command system-install
May 21 09:17:37 ubuntu subiquity_event.3625[3625]: retrieving ubuntu-restricted-addons
May 21 09:17:37 ubuntu subiquity_event.3625[3625]: installing ubuntu-restricted-addons
May 21 09:17:37 ubuntu subiquity_event.3625[3625]: configuring cloud-init
May 21 09:17:37 ubuntu subiquity_event.3625[3625]: configuring cloud-init
May 21 09:17:37 ubuntu subiquity_event.3625[3625]: final system configuration
May 21 09:17:37 ubuntu subiquity_event.3625[3625]:
May 21 09:17:37 ubuntu subiquity_event.3625[3625]: curtin command system-install

[Sebastien Bacher (seb128)]

Thank you for your bug report. Could you add the logs from/var/log/installer after getting the problem?

[Sebastien Bacher (seb128)]

the extract from the log suggests it failed to download a deb from the mirror which made subiquity error out. While it's technically a mirror problem ideally the installer would be robust to those...