0s autopkgtest [12:42:17]: starting date and time: 2024-03-26 12:42:17+0000
  0s autopkgtest [12:42:17]: git checkout: 4a1cd702 l/adt_testbed: don't blame the testbed for unsolvable build deps
  0s autopkgtest [12:42:17]: host juju-7f2275-prod-proposed-migration-environment-4; command line: /home/ubuntu/autopkgtest/runner/autopkgtest --output-dir /tmp/autopkgtest-work.d6ekfift/out --timeout-copy=6000 --setup-commands 'dhclient || 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 --apt-upgrade r-cran-randomglm --timeout-short=300 --timeout-copy=20000 --timeout-build=20000 --env=ADT_TEST_TRIGGERS=r-base/4.3.3-2build1 -- lxd -r lxd-armhf-10.44.124.26 lxd-armhf-10.44.124.26:autopkgtest/ubuntu/noble/armhf
 38s Unexpected error:
 38s Traceback (most recent call last):
 38s   File "/home/ubuntu/autopkgtest/lib/VirtSubproc.py", line 830, in mainloop
 38s     command()
 38s   File "/home/ubuntu/autopkgtest/lib/VirtSubproc.py", line 759, in command
 38s     r = f(c, ce)
 38s   File "/home/ubuntu/autopkgtest/lib/VirtSubproc.py", line 348, in cmd_open
 38s     caller.hook_open()
 38s   File "/home/ubuntu/autopkgtest/virt/autopkgtest-virt-lxd", line 159, in hook_open
 38s     wait_booted()
 38s   File "/home/ubuntu/autopkgtest/virt/autopkgtest-virt-lxd", line 114, in wait_booted
 38s     VirtSubproc.wait_booted([args.command, 'exec', container_name, '--'],
 38s   File "/home/ubuntu/autopkgtest/lib/VirtSubproc.py", line 238, in wait_booted
 38s     (rc, out, _) = execute_timeout(
 38s   File "/home/ubuntu/autopkgtest/lib/VirtSubproc.py", line 155, in execute_timeout
 38s     (out, err) = sp.communicate(instr)
 38s   File "/usr/lib/python3.8/subprocess.py", line 1015, in communicate
 38s     stdout = self.stdout.read()
 38s   File "/home/ubuntu/autopkgtest/lib/VirtSubproc.py", line 75, in alarm_handler
 38s     raise Timeout(to)
 38s VirtSubproc.Timeout: 10
 38s autopkgtest [12:42:55]: ERROR: testbed failure: unexpected eof from the testbed