0s autopkgtest [19:24:06]: starting date: 2024-03-17
  0s autopkgtest [19:24:06]: git checkout: d9c0295b adt_testbed.py: supress warnings from apt using a shell pipeline
  0s autopkgtest [19:24:06]: host juju-7f2275-prod-proposed-migration-environment-4; command line: /home/ubuntu/autopkgtest/runner/autopkgtest --output-dir /tmp/autopkgtest-work.a25pm8zy/out --timeout-copy=6000 --setup-commands 'ls /etc/apt/sources.list.d/*.list 2>/dev/null || true; ln -s /dev/null /etc/systemd/system/bluetooth.service; printf "http_proxy=http://squid.internal:3128\nhttps_proxy=http://squid.internal:3128\nno_proxy=127.0.0.1,127.0.1.1,login.ubuntu.com,localhost,localdomain,novalocal,internal,archive.ubuntu.com,ports.ubuntu.com,security.ubuntu.com,ddebs.ubuntu.com,changelogs.ubuntu.com,launchpadlibrarian.net,launchpadcontent.net,launchpad.net,10.24.0.0/24,keystone.ps5.canonical.com,objectstorage.prodstack5.canonical.com\n" >> /etc/environment' --apt-pocket=proposed=src:brotli --apt-upgrade libsoup2.4 --timeout-short=300 --timeout-copy=20000 --timeout-build=20000 --env=ADT_TEST_TRIGGERS=brotli/1.1.0-2build1 -- lxd -r lxd-armhf-10.44.124.220 lxd-armhf-10.44.124.220:autopkgtest/ubuntu/noble/armhf
 32s autopkgtest [19:24:38]: @@@@@@@@@@@@@@@@@@@@ test bed setup
 38s autopkgtest [19:24:44]: ERROR: "sh -ec 
 38s             sed -rn 's/^(deb|deb-src) +(\[.*\] *)?((http|https|file):[^ ]*) +([^ -]+) +(.*)$/\1 \2\3 \5-proposed \6/p' \
 38s                 /etc/apt/sources.list `ls /etc/apt/sources.list.d/*.list 2>/dev/null|| true` > \
 38s                 /etc/apt/sources.list.d/proposed.list
 38s             for retry in 1 2 3; do
 38s                 apt-get --no-list-cleanup \
 38s                         -o Dir::Etc::sourcelist=/etc/apt/sources.list.d/proposed.list \
 38s                         -o Dir::Etc::sourceparts=/dev/null \
 38s                         update 2>&1 && break || \
 38s                         if [ $retry = 3 ] ; then
 38s                             return 1
 38s                         else
 38s                             sleep 15
 38s                         fi
 38s             done
 38s             " failed with stderr "sed: can't read /etc/apt/sources.list: No such file or directory
 38s "