Control: tags -1 moreinfoWhy don't you package the version 2.4.11 from https://github.com/usnistgov/SCTK? It is from Nov 2018.
Usually, you keep the changelog entry for NMUs if you acknowlege (keep the patch) them. You did not for -3.1.
Build tests on i386 fail with: test17: Vietnamese case conversion Executions complete: Comparing output Removing DIFF tests Removing SLM tests !!!!! TESTS HAVE FAILED !!!!!