Test

ubuntu20-cache --ffmpeg-opus=off --build-cache=off #218

Job	Run time
cygwin64-cache	2m 57s
multiple-arch-aarch64	5m 51s
multiple-arch-armv7	7m 52s
utest-regression-blackbox-test	7m 26s
fast	1s
cygwin64	8m 35s
build-cross-aarch64	3m 31s
build-centos7	2m 14s
build-cross-arm	2m 37s
build-ubuntu16	1m 35s
build-ubuntu18	2m 19s
build-ubuntu20	2m 43s
coverage	2m 38s
multiple-arch-amd64	1m 11s
test-done	1s
	51m 31s

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