`timeout`'s `-v` arg is not supported on stretch and makes job fail

I'm creating this issue for reference and so that it doesn't get forgotten

Since !481 (merged), jobs on stretch are failing now with this error:

timeout: invalid option -- 'v'
Try 'timeout --help' for more information.

That option -v doesn't exist https://manpages.debian.org/stretch/coreutils/timeout.1.en.html in the version shipped in stretch.