No error message when committing a container fails due to no space left on device

[boehmseb]

I get no error message when committing a container fails due to a full hard drive.
This case is especially annoying because BB's output looks exactly like for a successful run.
I only detected this case because I had the --export flag enabled and it complained about not finding the required image.
Also the normal debug methods like containers/keep do not work (because there is no space to store the failed image`) so I had to manually trace back the steps to find the issue.

This is the output that buildah commit $image produces when run manually on the command line which clearly states the problem:
error committing container "debian-working-container" to "": error copying layers and metadata for container "e6f6731588d816f51ffd6c752a903074b75a2c9c35e27305013f6a756825e1d7": Error initializing source containers-storage:debian-wor king-container: error storing layer "b85af40f2294f58d92e5b319b2bafd3c7198954ba8da06342e7fd2d2f0ffc3c4" to file: write /var/tmp/buildah307038400/layer: no space left on device ERRO exit status 125

[boehmseb]

After a little digging, I think the culprit is that the following command is never checked for any error:

benchbuild/benchbuild/environments/service_layer/unit_of_work.py

Line 125 in 6323d77

common.run(

[simbuerg]

"After a little digging" - I'm sorry :-), sounds painful.
I will make sure that there is useful output in the future.

[boehmseb]

Same goes for some other commands btw., like export. It would probably be worth finding a common solution for all these non-layer-creating buildah commands.