fix debug arg #1546

Job	Run time
collect-experiments	5s
unittest	44s
run-test (tests/ci/rand_soc.yaml)	10m 30s
run-test (tests/ci/randsoc_dumped.yaml)	9m 49s
run-test (tests/ci/vivado_bit_analysis.yaml)	3m 58s
run-test (tests/ci/vivado_bit_to_netlist.yaml)	2m 57s
run-test (tests/ci/vivado_conformal.yaml)	2m 30s
run-test (tests/ci/vivado_ooc.yaml)	2m 33s
run-test (tests/ci/vivado_phys_netlist.yaml)	17m 40s
run-test (tests/ci/vivado_phys_netlist_cmp.yaml)	3m 37s
run-test (tests/ci/vivado_phys_netlist_error_inject.yaml)	24m 1s
run-test (tests/ci/vivado_wafove.yaml)	20m 23s
run-test (tests/ci/vivado_yosys_impl.yaml)	4m 39s
	1h 43m 26s

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