Test::Builder->BAILOUT("oh no");
# outputs:
# tests_sante_reporting/02-infocentre-sanity.......NOK 1FAILED--Further testing stopped: oh no
# # Looks like you planned 2 tests but only ran 1.

Test::Builder->BAILOUT("oh no\n");
# outputs (yes, like this):
# # tests_sante_reporting/02-infocentre-sanity.......NOK 1# Looks like you planned 2 tests but only ran 1.
# FAILED--Further testing stopped: oh no

Test::Builder->BAILOUT("\noh no\n");
# outputs (yes, also like this):
# tests_sante_reporting/02-infocentre-sanity.......NOK 1# Looks like you planned 2 tests but only ran 1.
# FAILED--Further testing stopped.