make tests less verbose

4 jobs for better_minimizers in 56 minutes and 3 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed #258033
test_min

00:05:57

passed #258034
test_mpi

00:09:41

passed #258035
test_mpi_fftw

00:08:28

passed #258036
test_mpi_fftw_hdf5

00:55:23

66.0%