Phoronix comments really are a battlefield for rust vs C. The seaheads just can't accept rust is safer and will moan about the borrow checker telling them they are doing something unsafe. Probably the same people would argue static typing is better then dynamic typing, but can't seem to see the parallels between safety guarantees at compilation time vs checking at runtime. Impressive.
More to zlib-rs: good job! RiR without bothering people is great. Just do it.