The syntax for dumpimage was changed since v2019.01, but test/image/test-imagetools.sh wasn't updated with the new syntax.
While the change may make sense, it breaks existing behavior, and that has it's drawbacks...
In any case, the tests shouldn't fail.
I believe this is the commit that changed it:
commit 12b831879a765722c1a94ca75c6adb6f80759cd9 Author: Martyn Welch martyn.welch@collabora.com Date: Sat Jan 26 02:31:51 2019 +0000
tools: dumpimage: Simplify arguments
The dump image utility has very confusing syntax. If called to list image contents ("-l") it takes the image name as a positional argument. If the utility is called to extract something from the image, the image must be provided via the optional argument "-i" as well as the positional argument but the value passed in the positional argument will be completely ignored.
Simplify dumpimage by always providing the image as the first positional argument. Assume we want to dump something from the image if we do not provide the "-l" option for now.
live well, vagrant