It is otherwise impossible to determine which test failed sanitizer/valgrind check. test/functional/helpers.lua module return was changed so that tests which do not provide after_each function to get new check will automatically fail.
vim-patch:7.4.1603 TODO(bfredl): if we allow events in HITRETURN and ASKMORE states, we need to add the necessary redraws as well.
For the moment, timers are triggered during sleep, but not in wait-for-input modes, like press-RETURN or f_getchar()
