Description

Steps to reproduce:

1. specify as a tester a function that runs too long (e.g. an infinite loop)
2. run the associated test

Observed behavior:

• apparently empty tester result

Expected behavior (Acceptance criteria):

• an informative error{F42727243}

Completion checklist

• Before closing this task, review one by one the checklist available here: https://www.mediawiki.org/wiki/Abstract_Wikipedia_team/Definition_of_Done#Front-end_Task/Bug_Completion_Checklist