I installed update-manager version 0.156.14.12 and followed the test case and confirm that a DuplicateSignature was created in the .crash file and that it had the temporary directory name replaced with update-manager-tmpdir.
I installed update-manager version 0.156.14.12 and followed the test case and confirm that a DuplicateSignature was created in the .crash file and that it had the temporary directory name replaced with update- manager- tmpdir.