Tests do not show logs from workflow _main() functions

[tsalo]

OK, so the five echo test isn't showing the logs from re-running. The logs only show the first pass:

INFO     tedana.selection.tedica:tedica.py:117 Performing ICA component selection with Kundu decision tree v2.5
INFO     REPORT:tedica.py:118 Next, component selection was performed to identify BOLD (TE-dependent), non-BOLD (TE-independent), and uncertain (low-variance) components using the Kundu decision tree (v2.5; Kundu et al., 2013).
INFO     REFERENCES:tedica.py:122 Kundu, P., Brenowitz, N. D., Voon, V., Worbe, Y., Vértes, P. E., Inati, S. J., ... & Bullmore, E. T. (2013). Integrated strategy for improving functional connectivity mapping using multiecho fMRI. Proceedings of the National Academy of Sciences, 110(40), 16187-16192.
INFO     REPORT:tedana.py:587 Rejected components' time series were then orthogonalized with respect to accepted components' time series.
INFO     tedana.io:io.py:226 Writing optimally combined time series: /tmp/data/five-echo/TED.five-echo/ts_OC.nii.gz

I'm wondering if it's because the second call is using _main() instead of tedana_workflow() here

Originally posted by @emdupre in #598 (comment)