WIP: Debug powerpc64le builds #617

Job	Run time
macos-x86_64	11m 24s
sdist	9m 43s
macos-aarch64	10m 10s
windows (x86_64-pc-windows-msvc, x64)	13m 41s
windows (i686-pc-windows-msvc, x86)	14m 27s
linux (x86_64-unknown-linux-gnu)	7m 43s
linux (i686-unknown-linux-gnu)	11m 1s
linux-arm (aarch64-unknown-linux-gnu, aarch64, -e JEMALLOC_SYS_WITH_LG_PAGE=16)	11m 18s
linux-powerpc (powerpc64le-unknown-linux-gnu, ppc64le, -e JEMALLOC_SYS_WITH_LG_PAGE=16)	11m 12s
linux-arm (armv7-unknown-linux-gnueabihf, armv7)	10m 37s
linux-s390x (s390x-unknown-linux-gnu, s390x)	14m 31s
linux-powerpc (powerpc64-unknown-linux-gnu, ppc64, -e JEMALLOC_SYS_WITH_LG_PAGE=16)	10m 34s
linux-arm (arm-unknown-linux-musleabihf, arm)	10m 21s
musllinux (x86_64-unknown-linux-musl)	10m 10s
musllinux-cross (aarch64-unknown-linux-musl, aarch64, -e JEMALLOC_SYS_WITH_LG_PAGE=16)	11m 50s
musllinux (i686-unknown-linux-musl)	9m 32s
musllinux-cross (armv7-unknown-linux-musleabihf, armv7)	11m 8s
musllinux-cross (powerpc64le-unknown-linux-musl, ppc64le, -e JEMALLOC_SYS_WITH_LG_PAGE=16, nightl...	7m 0s
	3h 16m 22s

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