Analyse following RPM build log snippet. Describe contents accurately, without speculation or suggestions for resolution.            
Your analysis must be as concise as possible, while keeping relevant information intact.
Snippet: 
pkginfo/tests/test_installed.py:145: AssertionError
=========================== short test summary info ============================
FAILED pkginfo/tests/test_installed.py::test_installed_ctor_w_dist_info - Ass...
======================== 1 failed, 198 passed in 0.51s =========================
One of the tests failed due to AssertionError in PyTest