Add syslog supports #1582

Job	Run time
minver	14s
macos-aarch64	2m 40s
macos	4m 15s
linux_native_builds (x86_64-unknown-linux-gnu)	3m 59s
linux_native_builds (x86_64-unknown-linux-musl)	3m 13s
rust_stable	1m 25s
rustfmt	11s
tier3 (x86_64-unknown-dragonfly)	1m 5s
tier3 (x86_64-unknown-openbsd)	58s
tier3 (x86_64-unknown-haiku)	1m 0s
tier3 (armv7-unknown-linux-uclibceabihf)	1m 11s
tier3 (i686-unknown-hurd-gnu)	1m 0s
redox	40s
cross (arm-unknown-linux-gnueabi)	2m 1s
cross_compiling (aarch64-linux-android)	40s
cross (armv7-unknown-linux-gnueabihf)	2m 4s
cross_compiling (arm-linux-androideabi)	36s
cross (i686-unknown-linux-gnu)	1m 53s
cross_compiling (armv7-linux-androideabi)	41s
cross (i686-unknown-linux-musl)	1m 56s
cross_compiling (i686-linux-android)	40s
cross (mips-unknown-linux-gnu)	1m 59s
cross_compiling (x86_64-linux-android)	37s
cross (mips64-unknown-linux-gnuabi64)	1m 51s
cross_compiling (arm-unknown-linux-musleabi)	38s
cross (mips64el-unknown-linux-gnuabi64)	1m 53s
cross_compiling (x86_64-unknown-fuchsia)	30s
cross (mipsel-unknown-linux-gnu)	1m 44s
cross_compiling (x86_64-unknown-illumos)	29s
cross (powerpc64le-unknown-linux-gnu)	1m 53s
cross_compiling (aarch64-apple-ios, true)	37s
cross (loongarch64-unknown-linux-gnu)	1m 59s
cross_compiling (powerpc64-unknown-linux-gnu)	43s
cross_compiling (s390x-unknown-linux-gnu)	46s
cross_compiling (x86_64-unknown-linux-gnux32)	41s
cross_compiling (x86_64-unknown-netbsd)	35s
	49m 17s

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