*** Create and kill a single invalid mutation ***
0000000000	1	1	Code: 6,
waiting	test	kill_mutation_r1	0000000000
*** Create and kill invalid mutation that blocks another mutation ***
0000000001	1	1	Code: 6,
0000000002	1	1	Code: 6,
waiting	test	kill_mutation_r1	0000000001
2001-01-01	2	b