Latest version of xdebug (3) no longer outputs coverage

Describe the bug

Latest version of xdebug (3) no longer outputs coverage in standard output.

Expected behavior

Previous version (2) used to output coverage in stdout as follows:

$ dophpunit ${TRACE+--debug} --coverage-text --coverage-clover=reports/clover.xml --log-junit=reports/junit.xml --colors=never $PHP_UNIT_ARGS
PHPUnit 9.4.2 by Sebastian Bergmann and contributors.
....                                                                4 / 4 (100%)
Time: 00:00.079, Memory: 12.00 MB
OK (4 tests, 4 assertions)
Generating code coverage report in Clover XML format ... <!DOCTYPE html>

[...]

done [00:00.054]
Code Coverage Report:     
  2020-11-18 14:09:35   

 Summary:                 
  Classes:        (0/0)   
  Methods:        (0/0)   
  Lines:    7.08% (23/325)

The last line allowed to grab the coverage in GitLab.

Actual behavior

This is no longer the case with version 3, with a warning message (is it related?)

$ dophpunit ${TRACE+--debug} --coverage-text --coverage-clover=reports/clover.xml --log-junit=reports/junit.xml --colors=never $PHP_UNIT_ARGS
PHPUnit 9.4.2 by Sebastian Bergmann and contributors.
Warning:       xdebug.mode=coverage has to be set in php.ini
....                                                                4 / 4 (100%)
Time: 00:00.004, Memory: 6.00 MB
OK (4 tests, 4 assertions)

Context & Configuration

I've tried many things without success:

add -d xdebug.mode=coverage command line options
set XDEBUG_MODE=coverage