Symfony version(s) affected

7.1.1

Description

While upgrading from 7.0 to 7.1, my app started saying no routes exist.

I was doing

RUN bin/console cache:warmup --no-interaction -vvv

in my Dockerfile, cache folder doesn't exist before the command runs.

How to reproduce

rm -rf var/cache
bin/console cache:warmup --no-interaction -vvv
ls var/cache/prod/url_* # no files

Possible Solution

Have warmup behave exactly like clear would if it's running without a prior cache being present.

Alternatively, if this is impossible, have warmup throw it if notices there's no prior cache present because this is way too subtle of a change.

Additional Context

#53450 intended to fix this, but was closed.