I am uploading a NMU to fix this. As this involves a repack I am also updating the upstream version.
- Bug#1054692: tomlplusplus: FTBFS: ../tests/lib_... Lucas Nussbaum
- Bug#1054692: marked as done (tomlplusplus:... Debian Bug Tracking System
- Bug#1054692: tomlplusplus: FTBFS: ../tests... Bastian Germann