1. A method for determining severity of execution test failures, the method comprising: identifying, by one or more computer processors, a test report log from a regression test; identifying, by one or more computer processors, one or more errors in the identified test report log; determining, by one or more computer processors, a severity category for the one or more identified errors in the identified test report log; and determining, by one or more computer processors, a severity category for the identified test report log based on the determined severity category for the one or more identified errors in the identified test report log wherein determining a severity category for the identified test report log comprises: determining, by one or more computer processors, if the regression test executed successfully but the regression test has checkpoint failures; assigning, by one or more computer processors, a severity category to the identified test report log based upon the checkpoint failures; identifying, by one or more computer processors, a warning associated with the one or more errors in the identified test report log; identifying, by one or more computer processors, a previous test report log with a similar warning associated with the identified one or more errors in the identified test report log; assigning, by one or more computer processors, a severity category assigned to the previous test report log to the identified test report log; identifying, by one or more computer processors, at least one preset error message that matches an error message included in the identified test report log and corresponds to a plurality of severity categories; determining, by one or more computer processors, a severity category from a plurality of severity categories that includes a most identical preset error message in relation to error messages in the identified test report log; identifying, by one or more computer processors, one or more messages for trace and bug log files; assigning, by one or more computer processors, a severity category, from a plurality of severity categories, to the identified test report log based on the identified one or more messages for trace and bug log files; and determining, by one or more computer processors, a severity category for the identified test report log based on the determined severity category for the one or more identified errors in the identified test report log.