Rebar3 eunit ignores module_level logger configuration?

Questions / Help
1

When I run rebar3 eunit with a configuration file, it appears to ignore module_level configuration in the logger section.

I have this in rebar.config:

{eunit_opts, [
    % Note that 'sys_config' silently skips files that don't exist.
    {sys_config, ["config/eunit.config"]}
]}.

And I have this in config/eunit.config:

[
    {kernel, [
        {logger_level, debug},

        {logger, [
            {module_level, none, [my_module]},

…and I’m still seeing debug-level logging from my_module.

What have I missed? How do I get it to shut up?