A reporter that prints the header, summary, and failure details at the end of the run.
This is added to the top-level
CompositeReporter at the start of the run. If you want to change the output of minitest via a plugin, pull this out of the composite and replace it with your own.
# File minitest-5.13.0/lib/minitest.rb, line 811 def binary_string; ''.b; end