Hi,

I was investigating what was causing the huge amount of memory usage on
the s390x host of ci.debian.net yesterday and src:hugo showed up as a
suspect. Now hugo doesn't use a lot of memory per se, but the testbed
filesystem is mounted on tmpfs so use of it does show up as memory
usage. I witnessed hugos disk usage growing steadily until 14 GB (on
both s390x and amd64). I *seems* to me that it just leaves the build
artifact of tests around while moving on to the next test. Is it maybe
possible to delete test files that are no longer needed? That would be a
bit nicer for the test infrastructure. (hugo was running 4 times in
parallel, so it was consuming a total of 56 GB of RAM).

Paul