when I run vendor/bin/phpunit --coverage-html coverage_report phpunit is running and happily is working thru the test-suite, while after waiting for minutes for its completion it reports:

There was 1 PHPUnit test runner warning:

1) XDEBUG_MODE=coverage (environment variable) or xdebug.mode=coverage (PHP configuration setting) has to be set

when the xdebug extension is already loaded, but in the wrong mode, couldn't phpunit restart itself with a proper XDEBUG_MODE=coverage set, so I don't need to wait for the whole testsuite to finish and re-run it manually?

this would be useful, as I usually have xdebug loaded in debugging mode