request 8-byte buffer alignment on macos #148

Job	Run time
cross_test (stable, aarch64-unknown-linux-gnu, constconf cgemm threading)	3m 23s
tests (1.41.1, false, ubuntu-latest, x86_64-unknown-linux-gnu, cgemm)	3m 40s
cross_test (1.61.0, aarch64-unknown-linux-gnu, cgemm)	3m 5s
miri	3m 27s
tests (stable, false, ubuntu-latest, x86_64-unknown-linux-gnu, threading cgemm, yes_examples, yes...	1m 57s
nostd-build (1.41.1, false, thumbv6m-none-eabi)	3m 10s
tests (nightly, false, ubuntu-latest, x86_64-unknown-linux-gnu, avx)	35s
nostd-build (stable, false, thumbv6m-none-eabi)	21s
tests (nightly, ubuntu-latest, x86_64-unknown-linux-gnu, threading cgemm, fma, false)	57s
tests (nightly, ubuntu-latest, i686-unknown-linux-gnu, cgemm, sudo apt-get update sudo apt-get in...	1m 21s
tests (stable, false, macos-latest, x86_64-apple-darwin, threading cgemm, yes_examples)	1m 32s
	23m 28s

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