Source: prody Followup-For: Bug #1028722 There seems to be ambiguity about the reproducibility of this bug. That's possibly consistent with problems with rounding, though the bug here seems to be more than an issue with floating point precision.
Upstream has made a new release. I suggest packaging and uploading the new version. That will give more fresh information on the state of the build, whether the FTBFS is reliably reproducible.