refactor: I/O safety for sys/stat.rs (#2439) #1193

Job	Run time
rust_stable	1m 16s
linux_native_builds (x86_64-unknown-linux-gnu)	2m 32s
macos	2m 57s
linux_native_builds (x86_64-unknown-linux-musl)	2m 29s
minver	15s
macos-aarch64	1m 44s
rustfmt	5s
tier3 (x86_64-unknown-dragonfly)	58s
tier3 (x86_64-unknown-openbsd)	55s
tier3 (x86_64-unknown-haiku)	52s
cross_compiling (aarch64-linux-android)	36s
redox	36s
cross_compiling (arm-linux-androideabi)	34s
cross (arm-unknown-linux-gnueabi)	1m 43s
cross_compiling (armv7-linux-androideabi)	33s
cross (armv7-unknown-linux-gnueabihf)	1m 36s
cross_compiling (i686-linux-android)	33s
cross (i686-unknown-linux-gnu)	1m 32s
cross_compiling (x86_64-linux-android)	36s
cross (i686-unknown-linux-musl)	1m 39s
cross_compiling (arm-unknown-linux-musleabi)	49s
cross (mips-unknown-linux-gnu)	1m 49s
cross_compiling (x86_64-unknown-fuchsia)	23s
cross (mips64-unknown-linux-gnuabi64)	1m 39s
cross_compiling (x86_64-unknown-illumos)	26s
cross (mips64el-unknown-linux-gnuabi64)	1m 36s
cross_compiling (aarch64-apple-ios, true)	28s
cross (mipsel-unknown-linux-gnu)	1m 34s
cross_compiling (powerpc64-unknown-linux-gnu)	35s
cross (powerpc64le-unknown-linux-gnu)	1m 45s
cross_compiling (s390x-unknown-linux-gnu)	35s
cross_compiling (x86_64-unknown-linux-gnux32)	38s
cross_compiling (x86_64-unknown-netbsd)	26s
	36m 44s

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