handle autopkgtest failing because of out of disk

[jelmer]

See https://janitor.debian.net/cupboard/pkg/ros-catkin-lint/37b5bcd3-8505-4a49-b088-e89c2ff1c903/build.log:

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autopkgtest [18:36:02]: @@@@@@@@@@@@@@@@@@@@ summary
run-binary           PASS (superficial)
run-unit-tests       FAIL badpkg
blame: arg:/tmp/janitor7egf__wq/build-area/catkin-lint_1.6.19-2~jan+lint1_all.deb deb:catkin-lint /tmp/janitor7egf__wq/build-area/ros-catkin-lint_1.6.19-2~jan+lint1.dsc
badpkg: Test dependencies are unsatisfiable. A common reason is that your testbed is out of date with respect to the archive, and you need to use a current testbed or run apt-get update or use -U.
autopkgtest [18:36:02]: ERROR: unexpected error:
OSError: [Errno 28] No space left on device

During handling of the above exception, another exception occurred:
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