Test

Show error logs when utest fail. #293

Job	Run time
utest-regression-blackbox-test	5m 3s
cygwin64-cache	2m 47s
multiple-arch-aarch64	5m 37s
multiple-arch-armv7	5m 44s
fast	1s
cygwin64	7m 28s
build-centos7	3m 28s
build-ubuntu18	2m 39s
build-cross-arm	3m 27s
build-ubuntu16	1m 35s
build-cross-aarch64	2m 32s
build-ubuntu20	1m 43s
coverage	2m 25s
multiple-arch-amd64	1m 38s
test-done	1s
	46m 8s

Provide feedback