Fail fast for attempts to use test --debug
with a docker environment
#18560
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As described in #18212,
test --debug
currently silently uses the local environment to attempt to debug a target, which can cause a lot of confusion. Other goals likerun
at least render a warning.Until #17182 is fixed, we should ensure that we fail fast for the case of
test --debug
instead.Fixes #18212.