When simulations fail to complete in the enzo test suite, it isn't obvious until you start to get ERRORs in the outputs (and those aren't very helpful). So I've modified the test suite to spit out information to the end of the STDOUT when simulations don't complete, as well as adding in some lines in the test_results.txt file.
Adding in Nathan's suggestion
Making sure this works with --sim-only flag on.
Works for me. My only suggestion is to also print the list of simulations that didn't complete and the suggestion to rerun with time-multiplier to stdout as well as the test_results.txt file.