Rust

修改tun占用内存的大小 #76

Job	Run time
build (i686-unknown-linux-musl, ubuntu-latest, default)	3m 14s
build (x86_64-unknown-linux-musl, ubuntu-latest, ring-cipher,openssl-vendored)	3m 4s
build (aarch64-unknown-linux-musl, ubuntu-latest, ring-cipher,openssl-vendored)	2m 52s
build (armv7-unknown-linux-musleabihf, ubuntu-latest, openssl-vendored)	3m 10s
build (armv7-unknown-linux-musleabi, ubuntu-latest, openssl-vendored)	3m 12s
build (arm-unknown-linux-musleabihf, ubuntu-latest, ring-cipher,openssl-vendored)	3m 17s
build (arm-unknown-linux-musleabi, ubuntu-latest, ring-cipher,openssl-vendored)	3m 12s
build (x86_64-apple-darwin, macos-latest, ring-cipher,openssl-vendored)	2m 31s
build (aarch64-apple-darwin, macos-latest, ring-cipher,openssl-vendored)	2m 10s
build (i686-pc-windows-msvc, windows-2019, ring-cipher,openssl-vendored)	5m 39s
build (x86_64-pc-windows-msvc, windows-latest, ring-cipher,openssl-vendored)	5m 30s
build (mipsel-unknown-linux-musl, ubuntu-latest, openssl-vendored,ring-cipher)	2m 44s
build (mips-unknown-linux-musl, ubuntu-latest, openssl-vendored)	2m 56s
deploy	22s
	43m 53s

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