Multiple errors in flaky test test_janky_actions

[github-actions]

Flaky tests were detected in this test run. This means that there was a failure that was cleared when the tests were simply restarted.
Failures:

test_janky_actions: [15:14:15] Runtime in code/datums/components/_component.dm,242: Cannot read null.comp_lookup
proc name: UnregisterSignal (/datum/proc/UnregisterSignal)
src: Shapeshift holder (/obj/shapeshift_holder)
src.loc: null
call stack:
Shapeshift holder (/obj/shapeshift_holder): UnregisterSignal(null, /list (/list))
Shapeshift holder (/obj/shapeshift_holder): restore(1)
Shapeshift holder (/obj/shapeshift_holder): caster death(John Doe (/mob/living/carbon/human/consistent), 0)
John Doe (/mob/living/carbon/human/consistent):  SendSignal("parent_qdeleting", /list (/list))
qdel(John Doe (/mob/living/carbon/human/consistent), 0)
/datum/unit_test/test_janky_ac... (/datum/unit_test/test_janky_actions): Run()
RunUnitTest(/datum/unit_test/test_janky_ac... (/datum/unit_test/test_janky_actions), /list (/list))
RunUnitTests()
/datum/callback (/datum/callback): InvokeAsync() at code/datums/components/_component.dm:242
test_janky_actions: [15:14:15] Runtime in code/datums/components/_component.dm,242: Cannot read null.comp_lookup
proc name: UnregisterSignal (/datum/proc/UnregisterSignal)
src: Shapeshift holder (/obj/shapeshift_holder)
src.loc: null
call stack:
Shapeshift holder (/obj/shapeshift_holder): UnregisterSignal(null, /list (/list))
Shapeshift holder (/obj/shapeshift_holder): restore(1)
Shapeshift holder (/obj/shapeshift_holder): caster death(John Doe (/mob/living/carbon/human/consistent), 0)
John Doe (/mob/living/carbon/human/consistent):  SendSignal("parent_qdeleting", /list (/list))
qdel(John Doe (/mob/living/carbon/human/consistent), 0)
/datum/unit_test/test_janky_ac... (/datum/unit_test/test_janky_actions): Run()
RunUnitTest(/datum/unit_test/test_janky_ac... (/datum/unit_test/test_janky_actions), /list (/list))
RunUnitTests()
/datum/callback (/datum/callback): InvokeAsync() at code/datums/components/_component.dm:242
test_janky_actions: [15:14:15] Runtime in code/modules/spells/spell_types/shapeshift/_shapeshift.dm,224: Cannot read null.loc
proc name: restore (/obj/shapeshift_holder/proc/restore)
src: Shapeshift holder (/obj/shapeshift_holder)
src.loc: null
call stack:
Shapeshift holder (/obj/shapeshift_holder): restore(1)
Shapeshift holder (/obj/shapeshift_holder): caster death(John Doe (/mob/living/carbon/human/consistent), 0)
John Doe (/mob/living/carbon/human/consistent):  SendSignal("parent_qdeleting", /list (/list))
qdel(John Doe (/mob/living/carbon/human/consistent), 0)
/datum/unit_test/test_janky_ac... (/datum/unit_test/test_janky_actions): Run()
RunUnitTest(/datum/unit_test/test_janky_ac... (/datum/unit_test/test_janky_actions), /list (/list))
RunUnitTests()
/datum/callback (/datum/callback): InvokeAsync() at code/modules/spells/spell_types/shapeshift/_shapeshift.dm:224

[Tsar-Salat]

shapeshift sucks