Test

WaitGroup: Do not wait automatically. #1686

Job	Run time
multiple-arch-armv7	22m 20s
utest-regression-blackbox-test	9m 1s
multiple-arch-aarch64	22m 51s
cygwin64-cache	2m 5s
fast	1s
cygwin64	14m 56s
build-ubuntu20	3m 37s
build-cross-aarch64	5m 7s
build-cross-arm	5m 14s
build-centos7	4m 59s
build-ubuntu16	3m 7s
build-ubuntu18	3m 8s
coverage	3m 51s
multiple-arch-amd64	2m 24s
test-done	0s
	1h 42m 41s

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