further test fixes

4 jobs for MR_issue67 in 21 minutes and 44 seconds (queued for 24 seconds)
Status Name Job ID Coverage
  Test
passed test_min #146818

00:01:30

passed test_mpi #146819

00:06:13

passed test_mpi_fftw #146820

00:06:29

passed test_mpi_fftw_hdf5 #146821

00:07:31

32.0%