refactor: I/O safety for sys/stat.rs (#2439) #73

Job	Run time
linux_native_builds (x86_64-unknown-linux-gnu)	2m 29s
macos	3m 14s
macos-aarch64	1m 49s
minver	12s
linux_native_builds (x86_64-unknown-linux-musl)	2m 36s
rust_stable	1m 30s
rustfmt	7s
tier3 (x86_64-unknown-dragonfly)	58s
tier3 (x86_64-unknown-openbsd)	57s
tier3 (x86_64-unknown-haiku)	52s
cross (arm-unknown-linux-gnueabi)	1m 46s
cross_compiling (aarch64-linux-android)	30s
cross_compiling (arm-linux-androideabi)	35s
cross (armv7-unknown-linux-gnueabihf)	1m 39s
cross_compiling (armv7-linux-androideabi)	31s
cross (i686-unknown-linux-gnu)	1m 36s
cross_compiling (i686-linux-android)	35s
cross (i686-unknown-linux-musl)	1m 41s
cross_compiling (x86_64-linux-android)	31s
redox	33s
cross (mips-unknown-linux-gnu)	1m 39s
cross_compiling (arm-unknown-linux-musleabi)	33s
cross (mips64-unknown-linux-gnuabi64)	1m 43s
cross_compiling (x86_64-unknown-fuchsia)	23s
cross (mips64el-unknown-linux-gnuabi64)	1m 41s
cross_compiling (x86_64-unknown-illumos)	24s
cross (mipsel-unknown-linux-gnu)	1m 40s
cross_compiling (aarch64-apple-ios, true)	25s
cross (powerpc64le-unknown-linux-gnu)	1m 41s
cross_compiling (powerpc64-unknown-linux-gnu)	34s
cross_compiling (s390x-unknown-linux-gnu)	35s
cross_compiling (x86_64-unknown-linux-gnux32)	39s
cross_compiling (x86_64-unknown-netbsd)	29s
	37m 7s

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