try 20? #2721

Job	Run time
linux-byo-crypto	2m 51s
linux-compat (manylinux1-x64)	2m 4s
linux-compiler-compat (clang-3)	6m 18s
linux-compat (manylinux1-x86)	2m 3s
linux-compiler-compat (clang-6)	6m 51s
linux-compat (manylinux2014-x64)	6m 24s
linux-compiler-compat (clang-8)	7m 7s
linux-compat (manylinux2014-x86)	5m 54s
linux-compiler-compat (clang-9)	7m 4s
linux-compat (fedora-34-x64)	5m 54s
linux-compiler-compat (clang-10)	7m 7s
linux-compat (opensuse-leap)	6m 49s
linux-compiler-compat (clang-11)	6m 46s
linux-compat (rhel8-x64)	6m 38s
linux-compiler-compat (gcc-4.8)	5m 24s
linux-compat (al2-x64)	5m 36s
linux-compiler-compat (gcc-5)	6m 58s
linux-compiler-compat (gcc-6)	6m 42s
clang-sanitizers (,thread)	7m 3s
linux-compiler-compat (gcc-7)	6m 19s
clang-sanitizers (,address,undefined)	7m 0s
linux-compiler-compat (gcc-8)	7m 8s
downstream	42m 44s
freebsd	2m 44s
linux-debug	5m 39s
linux-shared-libs	6m 11s
macos	2m 19s
macos-debug	2m 12s
macos-x64	2m 40s
openbsd	10m 59s
windows	4m 35s
windows-app-verifier	4m 28s
windows-debug	4m 15s
windows-shared-libs	3m 50s
windows-vc14 (x86)	2m 37s
windows-vc14 (x64)	3m 33s
	3h 50m 46s

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