Improve crash message when downTime is missing

When the crash occurs, let's also dump the state to help debug the
issue. Other fixes here include printing more information on host test
runs, and removing unused functions.

Bug: 211379801
Test: none
Merged-In: Iba41e1bfaa00caace9113ca96349bdc8d23ef919
Change-Id: Iba41e1bfaa00caace9113ca96349bdc8d23ef919
(cherry picked from commit ab67ebfd)