How not to display unnecessary information in the terminal during ptest?

Question

Ruby on Rails

Good afternoon.
When running tests with the rake ptest command, it prints a lot of unnecessary information about the progress of the work to the terminal.
For example:

40/1171: 40/1.1k, 3%, 0.9/s, elapsed: 00:00:31, ETA: 00:19:58
41/1171: 41/1.1k, 3%, 0.9/s, elapsed: 00:00:32, ETA: 00:19:57
42/1171: 42/1.1k, 3%, 0.9/s, elapsed: 00:00:32, ETA: 00:19:56
43/1171: 43/1.1k, 3%, 0.9/s, elapsed: 00:00:32, ETA: 00:19:55
44/1171: 44/1.1k, 3%, 0.9/s, elapsed: 00:00:32, ETA: 00:19:54
45/1171: 45/1.1k, 3%, 0.9/s, elapsed: 00:00:32, ETA: 00:19:53
46/1171: 46/1.1k, 3%, 0.9/s, elapsed: 00:00:32, ETA: 00:19:52

Is there any solution to ensure that only messages about failed tests go to the output, because additional information does not carry any semantic load?

Answer 1

command 1>/dev/null
1st stream is STDOUT
2nd (which will remain) - STDERR
If the application is written correctly, then by hiding the 1st stream in the above way, you will get rid of all messages that are not errors.