igt@kms_content_protection@subtests - incomplete - Received signal SIGABRT

https://gfx-ci.igk.intel.com/cibuglog-ng/testresult/1900404900?query_key=de5314e73e6a1b4a7c07de3b30374f36e6a0ad76

Starting subtest: lic-type-0
(kms_content_protection:1635) igt_kms-CRITICAL: Test assertion failure function intel_pipe_output_combo_valid, file ../../../usr/src/igt-gpu-tools/lib/igt_kms.c:6594:
(kms_content_protection:1635) igt_kms-CRITICAL: Failed assertion: combo
(kms_content_protection:1635) igt_kms-CRITICAL: At least one pipe/output combo needed.
Received signal SIGABRT.
Stack trace: 
 #0 [fatal_sig_handler+0x10f]
 #1 [killpg+0x40]
 #2 [gsignal+0xcb]
 #3 [abort+0x12b]
 #4 [<unknown>+0x12b]
 #5 [__assert_fail+0x46]
 #6 [igt_fail+0x125]
 #7 [__igt_fail_assert+0x128]
 #8 [intel_pipe_output_combo_valid+0x119]
 #9 [test_content_protection+0x1bf]
 #10 [__igt_unique____real_main927+0x545]
 #11 [main+0x2d]
 #12 [__libc_start_main+0xf3]
 #13 [_start+0x2e]