`symbols-file-contains-debian-revision`

Debian revisions should be stripped from versions in symbols files. Not doing so leads to dependencies unsatisfiable by backports (1.0-1~bpo << 1.0-1 while 1.0-1~bpo >= 1.0). If the Debian revision can't be stripped because the symbol really appeared between two specific Debian revisions, you should postfix the version with a single "~" (example: 1.0-3~ if the symbol appeared in 1.0-3).