Opus delay 2.5ms, image=ubuntu20-cache --ffmpeg-opus=off --build-cach… #275

Job	Run time
cygwin64-cache	2m 44s
multiple-arch-aarch64	5m 37s
multiple-arch-armv7	5m 41s
utest-regression-blackbox-test	5m 56s
cygwin64	8m 20s
fast	1s
build-ubuntu18	1m 33s
build-ubuntu16	1m 34s
build-cross-arm	2m 31s
build-cross-aarch64	2m 20s
build-centos7	2m 13s
build-ubuntu20	1m 46s
coverage	2m 24s
multiple-arch-amd64	1m 9s
test-done	1s
	43m 50s

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