nightly: fix conf file and out report in case of success
nightly: fix conf file and out report in case of success

ssaavedra/why3,douglas-larocca/why3,douglas-larocca/why3,douglas-larocca/why3,jpdeplaix/why3,ssaavedra/why3,jpdeplaix/why3,jpdeplaix/why3,ssaavedra/why3