Merge pull request #16 from ivoire/limits #23

Job	Run time
linux (x86_64)	2m 30s
linux-musl (x86_64-unknown-linux-musl, x86_64-musl)	2m 10s
linux (x86)	3m 57s
linux-musl (i686-unknown-linux-musl, i686-musl)	2m 24s
linux (aarch64)	3m 2s
macos (x86_64)	50s
linux-musl (aarch64-unknown-linux-musl, aarch64-musl)	2m 5s
sdist	10s
linux (armv7)	2m 56s
macos (aarch64)	1m 4s
linux-musl (armv7-unknown-linux-musleabihf, armv7-musleabihf)	2m 12s
linux (s390x)	3m 10s
linux-musl (powerpc64le-unknown-linux-musl, powerpc64le-musl)	2m 7s
linux (ppc64le)	2m 47s
windows (x64)	4m 3s
windows (x86)	4m 43s
Release	0s
	40m 10s

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