Function deqp_runner::parallel_test

pub fn parallel_test(
    status_output: impl Write + Sync + Send,
    test_groups: Vec<(&dyn TestCommand, Vec<TestCase>)>
) -> Result<RunnerResults>

The heart of deqp-runner: this distributes the list of test groups (each a TestCommand and list of tests to run an invocation of that command) to the thread pool to parallelize running them across cores, collecting the results to the RunnerResults and logging incremental status to the console along the way.