%Warning-UNDRIVEN: t/t_lint_unused_iface_bad.v:7: Signal is not driven: sig_udrv
%Warning-UNDRIVEN: Use "/* verilator lint_off UNDRIVEN */" and lint_on around source to disable this message.
%Warning-UNUSED: t/t_lint_unused_iface_bad.v:8: Signal is not used: sig_uusd
%Error: Exiting due to